Packaging bag and its manufacturing method and manufacturing device

Abstract

To provide a packaging bag, a manufacturing method and an apparatus therefor, which does not obstruct the display location of visual elements that appeal to product information and product value, does not impair the aesthetic appearance of the product, solves the problem of limiting the degree of freedom in design related to packaging mode, and facilitates accurate positioning control of a support member folded in half. [Solution] The packaging bag 10 has an openable portion 15 and includes a bag body 14 for storing contents C, and a support member 16 arranged in a double-folded state inside the bag body 14. The support member 16 has a folding portion 18, which has a notch 22 spanning a fold line 20, and when the bag body 14 is opened, the notch 22 expands to form an insertion hole 22A. The other vertical edge of the support member 16 is aligned with one vertical edge of the bag body 14, and one end of the support member is fixed to form fixed ends 24 (24F, 24B).

Description

[Technical Field]

[0001] The present invention relates to a packaging bag and a manufacturing method and device thereof, and to a packaging bag and a manufacturing method and device thereof that can be used to package and display, for example, mascara, eyeliner, lipstick, and other various cosmetics, writing implements, scissors, and other various stationery items, face shavers, eyelash shaping tools, and other various hairdressing tools, or various relatively lightweight small electrical appliances, etc. [Background technology]

[0002] In the prior art that forms the background of the present invention, a clear case is used as an example of a packaging container that allows the contents to be seen and is made from a transparent plastic sheet such as polypropylene (PP), polyvinyl chloride (PVC), or polyethylene terephthalate (PET). This clear case is an assembly-type packaging container that is formed by folding a blank (plate material) punched out of the plastic sheet to form a rectangular, cubic, or cylindrical box-shaped body consisting of a front panel, a back panel, left and right side panels, a bottom panel, and a lid. These clear cases are widely used in convenience stores, electronics retailers, and other places selling miscellaneous goods and cosmetics, as they allow for easy product display and management, and also make it easy to check the contents.

[0003] However, conventional clear cases have the problem that, in addition to the six blanks that make up the box body, such as the front and back panels, they also have multiple insert pieces (flaps) and folding pieces, which requires a lot of folding work and makes assembly complicated.Furthermore, when molding such clear cases, transparent plastic sheets are often printed, punched, and have folding lines formed on them, and then assembled before shipping, so if this plastic sheet is left for a long time, there is also the problem that cracks will occur along the folding lines during assembly due to changes over time.

[0004] Furthermore, in the prior art that forms the background of the present invention, for example, blister containers are known as packaging containers. These blister containers are widely used as packaging containers for various contents (packaged items), such as toothbrushes, dry batteries, writing implements, various stationery items such as staplers, various cosmetics, and small electrical appliances such as face shavers and eyelash shaping tools. These blister containers have excellent display effects because the packaged container can be visually observed from the outside, and when displayed in stores, they can be expected to have the effect of increasing customers' desire to purchase the packaged items.

[0005] Typically, a blister container is composed of a blister section and a backing board. The blister section is made of transparent plastic and has a bulging storage section (also called a blister dome) for storing the contents (packaged items) and a flange for securing the blister to the backing board. The backing board is made of paper and has the product name and other information printed on its surface, and a plastic film formed on its surface. The contents are then placed in the storage section, and the flange of the blister section is heat-sealed to the plastic film formed on the backing board using an appropriate heating device such as a heat sealer, thereby packaging the contents in the blister container.

[0006] However, with this blister container, in order to fix the blister part to the backing, a plastic film must be formed on the surface of the backing, and further, a heat fusion process must be performed to fix the blister part to the backing, which poses the problem of a complex manufacturing process for the blister container and high manufacturing costs.

[0007] Also known among blister containers are those for hanging display, in which the container is hung from a display hook while the contents are stored inside. In order to prevent the backing from opening and sliding during display or handling, these conventional blister containers for hanging display are structured to prevent relative movement between the blister and the backing, for example, by attaching adhesive tape to the adjacent portions of the blister and the backing, or by staples at the overlapping portions of the blister and the backing.

[0008] However, with this conventional blister container for hanging display, when removing the contents stored in the blister container, it is necessary to peel off the adhesive tape or remove the staples to remove the contents, which is a cumbersome process and makes it difficult to remove the contents.

[0009] Also proposed is a blister container in which a backing is slidably attached to the blister portion, thereby improving the ease of removing the contents.

[0010] However, in blister containers in which the backing is slidable relative to the blister portion, there is a risk of misalignment between the blister portion and the backing, so a separate mechanism must be provided to position and fix the blister portion and the backing, which increases the number of parts and therefore the manufacturing process, and also poses the problem of higher manufacturing costs.

[0011] On the other hand, when products (contents) packaged in blister containers are displayed in stores or stored in packaging boxes, there is a demand for blister containers with a structure that allows them to stand on their own to improve the ease of handling of the blister containers. However, none of the blister containers described above have the function of allowing them to stand on their own with the contents stored inside.

[0012] Furthermore, in each of the blister containers described above, the blister portion and the backing sheet are made of different materials, so when disposing of the blister container, the blister portion and the backing sheet must be separated and disposed of, which poses the problem of cumbersome disposal procedures.

[0013] On the other hand, a conventional technology has been proposed that has the function of allowing the contents to stand upright when stored inside. That is, a package has been proposed that includes a self-standing auxiliary bag having a storage section capable of storing a packaged item that has a shape that easily falls over, and the packaged item stored in the storage section, and the self-standing auxiliary bag supports the packaged item in a predetermined self-standing state and stores it in the storage section, and is configured to be able to stand upright while supporting the packaged item (see, for example, Patent Document 1).

[0014] 1 and 2 of Patent Document 1, the self-standing auxiliary bag for this packaged product comprises a pair of side wall films 3, 4 and a bottom wall film 5 joined to lower edge portions 33, 43 of the pair of side wall films 3, 4, with upper edge portions 31, 41 and both side edge portions 32, 42 of the pair of side wall films 3, 4 joined to each other and with the lower edge portions 33, 43 of the pair of side wall films 3, 4 joined to edge portions 51, 51 of the bottom wall film 5, thereby forming a storage section 2. The pair of side wall films 3, 4 and the bottom wall film 5 are made of a film material such as an olefin resin such as polyethylene terephthalate (PET), nylon (Ny), polypropylene (PP), or polyethylene (PE), a biodegradable resin such as polylactic acid (PLA), or a combination thereof.

[0015] This conventional package can store products (contents) that are easily toppled, such as lipstick or portable fragrance spray containers, in the storage compartment of the self-standing auxiliary bag. Therefore, this package can be displayed on a display shelf in a self-standing state, and can be made to stand out on the display shelf, ensuring a large area for product display (trademarks, etc.). Furthermore, because the self-standing auxiliary bag is made of a film material, this package does not require the blister portion and backing paper to be disposed of separately, as is the case with the blister container described above, making disposal easier.

[0016] However, in the above-mentioned conventional package, particularly as shown in Figures 1 and 2 of Patent Document 1, the narrow width portion 7 of the storage section 2, which is generally oval in cross section along the line XX, is configured to support the packaged item C (contents) in an upright state in the self-standing auxiliary bag 1, and this narrow width portion 7 is formed by joining the inner surfaces of the pair of side wall films 3, 4 to each other at a pair of trapezoidal narrow joints 71 that continue from the center in the height direction at joint 62 of the side wall films 3, 4. The packaged item C (contents) stored in the storage section 2 is in a state of tight adhesion to the inner surfaces of the pair of side wall films 3, 4, which are restricted by the pair of trapezoidal narrow joints 71.

[0017] Furthermore, in this self-standing auxiliary bag 1, when the joints 61, 62, 63 and the narrow joint 71 are formed by heat sealing, they are more firmly adhered to the inner surfaces of the pair of side wall films 3, 4 in face-to-face contact due to the heat shrinkage action than when they are formed, for example, with an adhesive.

[0018] Therefore, when removing the packaged item C (contents) from the storage section 2 of this self-standing auxiliary bag 1, it takes time and effort to peel off the pair of side wall films 3, 4 that are tightly adhered to the packaged item C (contents), making it difficult to open. The same can be said for many other blister containers, where it is difficult to remove the contents.

[0019] Although this self-standing auxiliary bag 1 simplifies disposal by eliminating the need to separate the blister portion and backing paper as with conventional blister containers, it is still expensive to manufacture because narrow joint portion 71 must be formed when packaging item C (contents) is stored in it, and the joining area is large when applying joining means such as heat sealing or adhesive. In particular, when heat sealing is used as the joining means, a trapezoidal heat sealing plate must be prepared to heat seal narrow joint portion 71, further increasing manufacturing costs.

[0020] Furthermore, in this self-standing auxiliary bag 1, the joint areas of joints 61, 62, 63 and trapezoidal narrow joint 71 are formed to be large, so if these joints are joined by heat sealing, the heat shrinkage caused by the heat sealing is likely to cause deformation such as wrinkles or bulging in self-standing auxiliary bag 1, resulting in problems such as a loss of aesthetic appeal of self-standing auxiliary bag 1. Moreover, the heat shrinkage caused by the heat sealing affects the bottom wall film 5 side of self-standing auxiliary bag 1 due to the heat-sealed shape of joints 61, 62, 63 and narrow side joint 71, resulting in problems such as a decrease in the self-standing ability of self-standing auxiliary bag 1.

[0021] In other words, all of the various conventional technologies mentioned above still have problems such as high manufacturing costs due to the large number of parts and complex structure, cumbersome manufacturing processes, the need for separate disposal after use and troublesome disposal process, the time-consuming process of removing the contents (packaged items), reduced self-standing ability when the contents are stored inside, and impaired aesthetic appearance, and no technology has been found that solves these problems.

[0022] Therefore, in view of the background technology described above, the inventor of the present application has come to propose a packaging bag that has a simple structure, does not require much effort to remove the contents, simplifies the manufacturing process and disposal process, and is capable of maintaining its own self-standing ability and maintaining a beautiful appearance (see, for example, Patent Document 2). This packaging bag has a storage section capable of storing rod-shaped contents that are difficult to stand on their own, and includes a bag body formed, for example, with an openable upper end. The bag body is formed, for example, in a vertically elongated rectangular shape when viewed from the front, and a support member is disposed in approximately the vertical center of the bag body. The support member has a single through-hole in its center through which the rod-shaped contents can be inserted, and is formed, for example, in a horizontally elongated rectangular shape when viewed in the direction of the main surface of the bag body when folded in half so that its cross-sectional shape is an inverted V. When folded in half, the support member is disposed from one end to the other end in the left-right direction of the bag body. In this packaging bag, the upper edge of one outer surface of the support member is fixed to the inner surface of the front member, and the upper edge of the other outer surface of the support member is fixed to the inner surface of the back member, for example, by heat sealing, as shown in Figure 1 of Patent Document 2. Also, in this packaging bag, the lower edge of one outer surface of the support member is fixed to the inner surface of the front member, and the lower edge of the other outer surface of the support member is fixed to the inner surface of the back member, for example, by heat sealing, as shown in Figure 8 of Patent Document 2.

[0023] On the other hand, there are conventional technologies for manufacturing devices and methods of packaging bags that claim to be capable of manufacturing packaging bags in which half-folded inner film such as an inner lid sheet can be positioned with high positional accuracy (see, for example, Patent Document 3). The method for manufacturing this packaging bag includes a half-folding step in which a long strip of core raw sheet that will become the core film is folded in half using a half-folding mechanism including an introduction section for introducing the core raw sheet and a half-folding section for folding the core raw sheet introduced from the introduction section so that a fold is formed along the longitudinal direction of the long strip, and a step in which the core raw sheet folded in half in the half-folding step is placed between a long strip of first raw sheet that will become the first surface film and a long strip of second raw sheet that is arranged opposite the first raw sheet and will become the second surface film, with the longitudinal direction of the core raw sheet being aligned with the longitudinal direction of the first raw sheet and the second raw sheet, The method includes a supplying step of supplying the first and second raw sheets to a midpoint in the width direction, and a heat welding step of heat welding the first, second, and intermediate raw sheets together with the intermediate raw sheet supplied between the first and second raw sheets in the supplying step. The half-folding step is a step of using an introduction section to feed the intermediate raw sheet from one introduction area on one side where the fold is located in the width direction from the half-folded section to another introduction area on the other side opposite the one side in the width direction from the half-folded section, and introducing the intermediate raw sheet from the other introduction area into the half-folded section.

[0024] The packaging bag manufacturing device also includes an introduction section that introduces a long strip of core raw sheet that will become the core film, and a half-folding section that folds the core raw sheet introduced from the introduction section, and includes a half-folding mechanism that folds the core raw sheet in half so that a crease is formed along the longitudinal direction of the long strip, and a long strip of first raw sheet that will become the first surface film and a long strip of second raw sheet that is arranged opposite the first raw sheet and will become the second surface film, with the long length of the core raw sheet folded in half by the half-folding mechanism being aligned with the longitudinal direction of the first raw sheet and the second raw sheet, and The device is equipped with a supply mechanism that supplies the first and second raw sheet sheets to a mid-way position in the width direction, and a heat welding mechanism that heat-welds the first, second, and intermediate raw sheet sheets together when the intermediate raw sheet is supplied between the first and second raw sheet sheets by the supply mechanism, and the introduction section is configured to feed the intermediate raw sheet from one introduction area on one side where the fold is located in the width direction from the half-fold section to another introduction area on the other side opposite the one side in the width direction from the half-fold section, and introduce the intermediate raw sheet from the other introduction area to the half-fold section.

[0025] The packaging bag manufactured by this packaging bag manufacturing apparatus and manufacturing method includes a first film, a second film disposed on the back side of the first film in the thickness direction and overlapping the first film, a bottom portion disposed between the first and second films in the thickness direction and forming the bottom of the packaging bag, and a core film disposed between the first and second films in the thickness direction. The first and second films are sheet-like and have substantially the same shape, with one end in the width direction forming the upper end of the packaging bag and the other end in the width direction forming the lower end (bottom) of the packaging bag. The core film is formed by folding a single sheet in half, with one side of the fold positioned on the front side and the other side positioned on the back side. The core film has a core outer surface positioned on the outside in the thickness direction when folded in half, and a core inner surface positioned on the inside in the thickness direction when folded in half. A fold is formed in the core film in the center portion in the width direction, and a through-hole is formed in the center portion in the longitudinal direction so as to overlap with the fold. The through-hole is a hole through which the contents are inserted, and the periphery of the through-hole supports the contents.

[0026] In this case, the filling film is folded along a crease between the first and second film thickness directions and midway along the width direction of the bag body. Specifically, the filling film is positioned so that its outer surface faces the inner surfaces of the first and second film thickness directions, and so that its inner surfaces face each other. The filling film is also positioned so that its crease extends along the longitudinal direction of the bag body and faces upward in the vertical direction of the bag body. In this packaging bag, as shown in Figures 7 and 8 of Patent Document 3, the first film and the outer surface of the filling film, and the second film and the outer surface of the filling film, are heat-sealed midway along the longitudinal direction of the filling film. The inner surfaces of the filling film are not heat-sealed midway along the longitudinal direction of the filling film. In this packaging bag, as shown in Figure 9 of Patent Document 3, a second horizontal seal extending longitudinally is formed midway along the width direction of the bag body by welding the first film and the outer surface of the filling film, and the second film and the outer surface of the filling film. [Prior art documents] [Patent documents]

[0027] [Patent Document 1] Patent No. 4086643 [Patent Document 2] Japanese Patent Application Publication No. 2020-104918 [Patent Document 3] Patent No. 7534568 (e.g., Figures 7 and 8) Summary of the Invention [Problem to be solved by the invention]

[0028] However, in the packaging bag according to the invention described in Patent Document 2, as shown in Figure 1 of Patent Document 2, the upper edge of one outer surface of the support member is fixed to the inner surface of the front member, and the upper edge of the other outer surface of the support member is fixed to the inner surface of the back member, each by a method such as heat sealing, and as shown in Figure 8 of Patent Document 2, the lower edge of one outer surface of the support member is fixed to the inner surface of the front member, and the lower edge of the other outer surface of the support member is fixed to the inner surface of the back member, each by a method such as heat sealing. Furthermore, in the packaging bag manufactured by the packaging bag manufacturing method and manufacturing apparatus according to the invention described in Patent Document 3, as shown in Figure 9 of Patent Document 3, a second horizontal seal portion extending in the longitudinal direction is formed in the middle of the width of the bag body by welding the first surface film to the outer surface of the inner material and the second surface film to the outer surface of the inner material.

[0029] Therefore, in the packaging bags according to the inventions described in Patent Document 2 and Patent Document 3, for example, as shown in Figures 43(A) and 43(B), when the contents 3 of the packaging bag 1 are cosmetics or other products, the packaging bag 1 is heat-sealed to have a predetermined width, and the linear fixed portion HS (the heat-sealed portion trace) extending in the left-right direction of the packaging bag 1 overlaps with the display area 5 of the visual elements that appeal to the product information and product value, such as the brand logo (letters, figures, etc.), color, shape, pattern, and material of the contents 3, which is likely to have a negative impact on the purchase motivation of buyers of the product and also reduces the aesthetic appeal, resulting in problems.

[0030] In the case of Figure 43(A), the support member of Patent Document 2 and the inner material film of Patent Document 3 are folded in a valley-like manner with respect to the filling direction (insertion direction) of the contents into the packaging bag 1, while in the case of Figure 43(B), the support member of Patent Document 2 and the inner material film of Patent Document 3 are folded in a mountain-like manner with respect to the filling direction (insertion direction) of the contents 3 into the packaging bag 1. In this case, the former results in a good filling efficiency of the contents 3 into the packaging bag 1, but the display areas 5 of the visual elements that highlight the product information and product value described above overlap. In the latter case, the display areas 5 of the visual elements that highlight the product information and product value described above, such as the brand logo and the color and texture of the material of the contents 3, do not overlap, but the filling efficiency of the contents 3 into the packaging bag 1 decreases.

[0031] On the other hand, in order to address the problems of the conventional packaging bag 1, many packaging styles have been seen in which a design element DS such as letters, figures, colors, patterns, etc. is deliberately added to the surface side of the fixed portion (heat-sealed portion mark) HS, as shown in Figures 44(A) and 44(B), in order to make the fixed portion (heat-sealed portion mark) HS less noticeable and camouflage it. In other words, such conventional packaging bags 1 have the problem of limiting the degree of freedom in the design that is originally intended to appeal to the value of the product.

[0032] Furthermore, when manufacturing the packaging bag 1 according to the inventions described in Patent Documents 2 and 3, in Patent Document 2, it is difficult to accurately position the support member (e.g., corresponding to reference symbol 7 in FIG. 43) whose cross section is folded in half into an inverted V shape in approximately the vertical center of the bag body and from one end to the other in the left-right direction of the bag body. Similarly, in Patent Document 3, it is difficult to accurately position the half-folded core material sheet (e.g., corresponding to reference symbol 7 in FIG. 43) so that its longitudinal direction is aligned with the longitudinal direction of the first and second raw sheets and at a position midway in the width direction of the first and second raw sheets. In other words, such conventional packaging bags have the problem that it is difficult to accurately manage the positioning of the support member folded in half and the core material sheet folded in half (e.g., corresponding to reference symbol 7 in FIG. 43).

[0033] Therefore, the object of the present invention is to provide a packaging bag, a manufacturing method and an apparatus for manufacturing the same, which does not interfere with the display of visual elements that highlight product information and product value, does not impair the aesthetic appearance of the product, solves the problem of limited design freedom regarding packaging form, and makes it easy to accurately position and manage the support member folded in half. [Means for solving the problem]

[0034] The present invention according to claim 1 is a packaging bag comprising: a bag body having a storage section whose upper or lower end is openable and capable of storing longitudinal contents; and a support member arranged inside the bag body in a double-folded state and cooperating with the bag body to support the contents in the storage section, wherein the support member has a folded section folded in half at one vertical edge of the support member, and the folded section has a single cut-out section spanning the crease line of the folded section, and when the bag body is opened, the cut-out section expands together with the folded section to form an insertion hole into which one longitudinal end of the contents can be inserted, and the other vertical edge of the support member on the side opposite the folded section when viewed in the main surface direction of the bag body (viewed from the front) is aligned with one vertical edge of the bag body, and at least a part of the other vertical edge of the support member and one vertical edge of the bag body are fixedly attached to form a fixed end of the bag body and the support member. The present invention according to claim 2 is an invention dependent on the invention according to claim 1, and is a packaging bag characterized in that the bag body includes a front member and a back member that is formed to be approximately the same shape and size as the front member and that is arranged opposite the front member, and in that, in the bag body and the support member, one end edge portion and the other end edge portion in the left-right direction of one outer surface of the support member and a middle portion in the up-down direction are partially fixed to the inner surface of the front member, and one end edge portion and the other end edge portion in the left-right direction of the other outer surface of the support member and a middle portion in the up-down direction are partially fixed to the inner surface of the back member. The present invention according to claim 3 is an invention dependent on the invention according to claim 2, and is a packaging bag characterized in that, in the bag body and the support member, at least a part of the other vertical edge of the support member opposite the folded portion is fixed to one of the vertical edges of the inner surface of the front member on one outer surface of the support member, at least a part of the other vertical edge of the support member opposite the folded portion is fixed to one of the vertical edges of the inner surface of the back member on the other outer surface of the support member, one and the other left and right edges of one outer surface of the support member are fixed to at least a part of one and the other left and right edges of the inner surface of the front member, respectively, and one and the other left and right edges of the other outer surface of the support member are fixed to at least a part of one and the other left and right edges of the inner surface of the back member, respectively. The present invention according to claim 4 is an invention dependent on the invention according to claim 2 or claim 3, wherein the bag body includes a gusset portion, the gusset portion is folded in half and disposed at the bottom of the bag body, and the bag body includes a bottom member having one outer surface of the folded portion facing the inner surface of the front member and the other outer surface of the folded portion facing the inner surface of the back member, and the bottom member has one end edge and the other end edge in the left-right direction of one outer surface of the bottom member and the other outer surface of the front member facing the inner surface of the front member. This packaging bag is characterized in that one and the other left-right edge portions are each fixed, one and the other left-right edge portions of the other outer surface of the bottom member and one and the other left-right edge portions of the inner surface of the back member are each fixed, the lower edge portion in the vertical direction of one outer surface of the bottom member and the lower side of the inner surface of the front member are fixed, and the lower edge portion in the vertical direction of the other outer surface of the bottom member and the lower side of the inner surface of the back member are fixed. The present invention according to claim 5 is a method for manufacturing a packaging bag including a belt-shaped front member raw film that becomes a front member, a back member raw film that is arranged opposite to the front member raw film and becomes a back member, and a support member raw film that is arranged in a state folded in half between the front member raw film and the back member raw film and becomes a support member, the method comprising the steps of: folding the support member raw film in half so as to have a folding portion at one end edge in the width direction of the support member raw film and extending in the longitudinal direction thereof; and forming notches at a predetermined interval in the longitudinal direction of the folding portion so as to straddle the crease line of the folding portion. a notching step of arranging a notch portion, an introduction step of introducing the support member raw film between the front member raw film and the back member raw film so that the other widthwise edge portion of the support member raw film opposite the bent portion is aligned with one widthwise edge portion of the front member raw film and the back member raw film, and a welding step of welding the support member raw film introduced between the front member raw film and the back member raw film in the introduction step, the front member raw film, and the back member raw film so that the bent portion of the support member raw film can be expanded. The present invention of claim 6 is an invention dependent on the invention of claim 5, and is a method for manufacturing a packaging bag, characterized in that the welding process includes a web longitudinal welding process of welding one end and the other end in the width direction of the front member web film, the back member web film, and the support member web film along the longitudinal direction of the front member web film, the back member web film, and the support member web film, and a web width direction welding process of welding from one end to the other end in the width direction of the front member web film, the back member web film, and the support member web film at an interval in the longitudinal direction of the front member web film, the back member web film, and the support member web film. The present invention according to claim 7 is an invention dependent on the invention according to claim 6, wherein the raw web longitudinal welding step includes a welding prevention member introduction step of introducing the support member raw web film between the front member raw web film and the back member raw web film in a state in which an anti-welding member is sandwiched between one inner side and the other inner side of the support member raw web film folded in half in the folding step to prevent the inner sides of the support member raw web film from welding to each other; and a welding prevention member introduction step of welding one outer side of the support member raw web film to the inner side of the front member raw web film in a state in which an anti-welding member is sandwiched between one inner side and the other inner side of the support member raw web film folded in half. and a first welding step of welding the other outer side of the support member raw film to the inside of the back member raw film, and a raw film width direction welding step of welding the front member raw film, back member raw film and support member raw film from one end to the other end in the width direction of the front member raw film, back member raw film and support member raw film, with a gap in the longitudinal direction of the front member raw film, back member raw film and support member raw film, after carrying out the first welding step, between one inside and the other inside of the folded support member raw film, with no welding prevention member sandwiched between them. The present invention according to claim 8 is an invention dependent on the invention according to claim 7, and the first welding step is a step of partially welding one outer surface of the folded support member raw film and the inner surface of the front member raw film to an end of the width direction of the support member raw film facing the notch portion of the support member raw film at an interval in the longitudinal direction of the front member raw film, the back member raw film and the support member raw film, and welding the folded support member raw film to the inner surface of the front member raw film. and a middle temporary fastening welding process in which one outer surface of the support member raw film and the inner surface of the front member raw film are partially welded together at a widthwise middle portion of the support member raw film and at a predetermined interval in the longitudinal direction thereof, with a welding prevention member sandwiched between one inner surface and the other inner surface of the support member raw film folded in half, and the other outer surface of the support member raw film and the inner surface of the back member raw film are partially welded together at a predetermined interval in the longitudinal direction thereof. The present invention of claim 9 is an invention dependent on the invention of claim 8, and is a method for manufacturing a packaging bag, characterized in that the first welding step includes another intermediate portion temporary welding step in which a widthwise intermediate portion of one outer surface of the folded support member raw film and the inner surface of the front member raw film are partially welded together at an interval in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, in a manner in which a welding prevention member is sandwiched between the inner surface of one side of the folded support member raw film and the inner surface of the back member raw film, but no welding prevention member is interposed in the widthwise intermediate portion of the support member raw film, and the intermediate portion of the widthwise intermediate portion of the other outer surface of the folded support member raw film and the inner surface of the back member raw film are partially welded together to temporarily secure the intermediate portion. The present invention according to claim 10 is a manufacturing device for a packaging bag including a belt-shaped front member raw film that becomes a front member, a back member raw film that is arranged opposite to the front member raw film and becomes a back member, and a support member raw film that is arranged in a state folded in half between the front member raw film and the back member raw film and becomes a support member, the device including a folding mechanism that folds the support member raw film in half so as to have a folding portion that is provided at one end edge in the width direction of the support member raw film and extending in the longitudinal direction thereof, and a folding mechanism that folds the support member raw film in half so as to have a folding portion that is provided at one end edge in the width direction of the support member raw film and extends in the longitudinal direction of the folding portion, and a folding mechanism that folds the support member raw film in half so as to have a folding portion that is provided at a predetermined interval in the longitudinal direction of the folding portion so as to straddle the crease line of the folding portion. a notch mechanism that arranges a notch between the front and back member raw films, an introduction mechanism that introduces the support member raw film between the front member raw film and the back member raw film so that the other widthwise edge of the support member raw film on the opposite side from the bent portion is aligned with one widthwise edge of the front member raw film and the back member raw film, and a welding mechanism that welds the support member raw film introduced between the front member raw film and the back member raw film by the introduction mechanism, the front member raw film, and the back member raw film so that the bent portion of the support member raw film can be expanded. The present invention according to claim 11 is an invention dependent on the invention according to claim 10, wherein the welding mechanism is a raw film welding mechanism for welding one end and the other end in the width direction of the front member raw film, the back member raw film and the support member raw film along the longitudinal direction of the front member raw film, the back member raw film and the support member raw film. Long and a raw web width direction welding mechanism that welds the front member raw web film, the back member raw web film, and the support member raw web film from one end to the other end in the width direction of the front member raw web film, the back member raw web film, and the support member raw web film at intervals in the longitudinal direction of the front member raw web film, the back member raw web film, and the support member raw web film. The present invention according to claim 12 is an invention dependent on the invention according to claim 11, wherein the original web longitudinal welding mechanism includes a welding prevention member introduction mechanism that introduces the support member original film between the front member original film and the back member original film in a state in which a welding prevention member is sandwiched between one inside and the other inside of the support member original film folded in half by the folding mechanism, the welding prevention member preventing the inner sides of the support member original film from welding to each other, and a welding prevention member introduction mechanism that fuses one outside of the support member original film to the inner side of the front member original film in a state in which a welding prevention member is sandwiched between one inside and the other inside of the support member original film folded in half. and a first welding mechanism that welds the other outer side of the support member raw film to the inside of the back member raw film, and the raw film width direction welding mechanism includes a second welding mechanism that, after performing the first welding mechanism, welds the front member raw film, back member raw film, and support member raw film from one end to the other end in the width direction of the front member raw film, back member raw film, and support member raw film, with a gap in the longitudinal direction of the front member raw film, back member raw film, and support member raw film, between one inside and the other inside of the folded support member raw film, with no welding prevention member sandwiched. The present invention according to claim 13 is an invention dependent on the invention according to claim 12, wherein the first welding mechanism is configured to sandwich a welding prevention member between one inner side and the other inner side of the support member raw film folded in half, and to weld one outer surface of the folded support member raw film and the inner surface of the front member raw film at an end in the width direction of the support member raw film facing the cutout portion of the support member raw film at an interval in the longitudinal direction of the front member raw film, the back member raw film and the support member raw film, This packaging bag manufacturing device is characterized by including an end temporary fastening welding mechanism that partially welds and temporarily fastens the other outer surface of the support member raw film that has been partially welded and folded in half to the inner surface of the back member raw film, and a middle temporary fastening welding mechanism that partially welds one outer surface of the support member raw film to the inner surface of the front member raw film at a middle portion in the width direction of the support member raw film and at a predetermined interval in the longitudinal direction, and partially welds and temporarily fastens the other outer surface of the support member raw film to the inner surface of the back member raw film. The present invention of claim 14 is an invention dependent on the invention of claim 13, and is a method for manufacturing a packaging bag, characterized in that the first welding mechanism sandwiches a welding prevention member between one inner side and the other inner side of the folded support member raw film, but no welding prevention member is interposed in the widthwise middle part of the support member raw film, and includes another middle part temporary fastening welding mechanism that partially welds the widthwise middle part of one outer surface of the folded support member raw film to the inner surface of the front member raw film, spaced apart in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, and partially welds the widthwise middle part of the other outer surface of the folded support member raw film to the inner surface of the back member raw film to temporarily fasten them. [Effects of the Invention]

[0035] According to the present invention, it is possible to provide a packaging bag and a manufacturing method and device therefor that do not interfere with the display of visual elements that highlight product information and product value, do not impair the aesthetic appearance of the product, solve the problem of limited design freedom regarding packaging form, and make it easy to accurately position and manage the support member that is folded in half. Moreover, the structure is simple, removing the contents is not time-consuming, and the manufacturing process and disposal process can be simplified.

[0036] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0037] [Figure 1] 1 is a front view illustrating an example (Example 1) of a packaging bag according to the present invention. [Figure 2] 2 is a partially omitted cross-sectional diagram taken along line AA in FIG. 1; FIG. [Figure 3] FIG. 3 is an exploded perspective view of the packaging bag shown in FIGS. 1 and 2. [Figure 4] FIG. 4 is a diagrammatic plan view showing the state of insertion holes of the packaging body shown in FIGS. 1 to 3. [Figure 5] FIG. 5 is a perspective view illustrating an example of a method for storing contents in the packaging bag shown in FIGS. 1 to 4. [Figure 6] FIG. 5 is a perspective view illustrating an example of a display state of contents (products and the like) packaged in the packaging bag shown in FIGS. 1 to 4. [Figure 7] FIG. 4 is a front view illustrating another example (Example 2) of the packaging bag according to the present invention. [Figure 8] 8 is a partially omitted cross-sectional diagram taken along line BB in FIG. 7; FIG. [Figure 9] FIG. 9 is an exploded perspective view of the packaging bag shown in FIGS. 7 and 8. [Figure 10] FIG. 10 is an exploded perspective view illustrating an example of a method for storing contents in the packaging bag shown in FIGS. 7 to 9. [Figure 11]FIG. 10 is a partially cutaway perspective view illustrating an example of a state in which contents (products and the like) are packaged in the packaging bag shown in FIGS. [Figure 12] 10 is a side view illustrating the basis for specifying the length in the depth direction of the support member of the packaging bag according to the present invention. FIG. [Figure 13] 1 is a side view illustrating the basis for specifying the folding directions (valley folds and mountain folds) of the support member of the packaging bag according to the present invention. FIG. [Figure 14] 10 is a front view illustrating the basis for defining the positions of the support member and the insertion hole of the packaging bag according to the present invention. FIG. [Figure 15] 1 is a plan view illustrating an example of a manufacturing apparatus for a packaging bag according to the present invention. [Figure 16] FIG. 16 is a front diagrammatic view of the manufacturing apparatus shown in FIG. [Figure 17] FIG. 16 is an enlarged diagrammatic view of a portion a surrounded by a dashed dotted line in FIG. 15. [Figure 18] 18 is a partially omitted perspective view taken along the line cc in FIG. 17 . FIG. [Figure 19] 17 is an enlarged diagrammatic view of a portion b surrounded by a dashed dotted line in FIG. 16. FIG. [Figure 20] FIG. 20 is a partially omitted perspective view illustrating the main part of FIG. 19. [Figure 21] FIG. 21 is a schematic plan view of a main portion showing an example of a raw sheet longitudinal direction welding step in a welding process when a stand-up pouch type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 22] 22(A) is a cross-sectional diagram taken along line DD in FIG. 21, FIG. 22(B) is a cross-sectional diagram taken along line EE in FIG. 21, FIG. 22(C) is a cross-sectional diagram showing a modified example (another example) of FIG. 22(A), and FIG. 22(D) is a cross-sectional diagram showing a modified example (another example) of FIG. 22(B). [Figure 23] FIG. 21 is a schematic plan view of a main part showing an example of a raw sheet width direction welding step in a welding process when a stand-up pouch type packaging bag is manufactured using the manufacturing device according to the present invention shown in FIGS. [Figure 24]FIG. 21 is a perspective view illustrating an example of a process of welding an original sheet in the length direction in a welding process when a stand-up pouch type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 25] 25A and 25B are diagrams for explaining an example of the storage direction of contents (products, etc.) stored in another packaging bag (stand-up pouch type packaging bag) according to the present invention, where FIG. 25A is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag) before the contents are stored, and FIG. 25B is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag) after the contents have been stored. [Figure 26] 26A and 26B are diagrams for explaining an example of the storage direction of contents (products, etc.) stored in yet another packaging bag (stand-up pouch type packaging bag having a hanging hole) according to the present invention, where FIG. 26A is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag having a hanging hole) before the contents are stored, and FIG. 26B is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag having a hanging hole) after the contents have been stored. [Figure 27] FIG. 21 is a diagrammatic plan view of a main part showing an example of a raw sheet longitudinal direction welding step in a welding process when a flat bag type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 28] Figure 28(A) is a cross-sectional diagram taken along line FF in Figure 27, Figure 28(B) is a cross-sectional diagram taken along line GG in Figure 27, Figure 28(C) is a cross-sectional diagram showing a modified example (another example) of Figure 28(A), and Figure 28(D) is a cross-sectional diagram showing a modified example (another example) of Figure 28(B). [Figure 29] FIG. 21 is a schematic plan view of a main part showing an example of a raw sheet width direction welding step in a welding process when a flat bag type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 30] FIG. 21 is a perspective view illustrating an example of a process of welding an original web in the length direction in a welding process when a flat-bag type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 31]21 is a schematic plan view of a main portion showing another example of the process of welding raw webs in the length direction in the welding process when flat-bag type packaging bags are manufactured using the manufacturing apparatus according to the present invention shown in FIGS. 15 to 20. FIG. [Figure 32] 21 is a perspective view illustrating a main part of still another example of the process of welding raw webs in the length direction in the welding process when manufacturing flat-bag type packaging bags using the manufacturing apparatus according to the present invention shown in FIGS. [Figure 33] 33A is a diagram illustrating an example of the direction in which contents (products, etc.) are stored in the packaging bag (flat bag type packaging bag) of the present invention depending on the state and shape of the contents. FIG. 33A is a diagrammatic plan view showing an example of the state of the packaging bag (flat bag type packaging bag) before the contents are stored, and FIG. 33B is a diagrammatic plan view showing an example of the state of the packaging bag (flat bag type packaging bag) after the contents have been stored. [Figure 34] 32A and 32B are diagrams for explaining an example of the direction in which contents (products, etc.) are stored in the packaging bag (flat-type packaging bag) according to the present invention, depending on the state and shape of the contents. FIG. 32A is a plan view diagram showing an example of the state of the packaging bag (flat-type packaging bag) before the contents are stored, and FIG. 32B is a plan view diagram showing an example of the state of the packaging bag (flat-type packaging bag) after the contents have been stored. [Figure 35] Figure 35(A) is a plan view of an example of an end temporary seal portion formed by an end temporary seal welding process using the packaging bag manufacturing apparatus of the present invention, and an intermediate temporary seal portion formed by an intermediate temporary seal welding process, and Figure 35(B) is a plan view of an example of another example of these. [Figure 36] 36(A), 36(C), and 36(E) are explanatory diagrams showing examples of when the insertion holes arranged by the packaging bag manufacturing apparatus of the present invention are, for example, circular, and Figures 36(A), 36(C), and 36(E) are oblique diagrams showing the shape of the insertion holes when the support member is folded in half, and Figures 36(B), 36(D), and 36(F) are plan diagrams showing the shape of the insertion holes when the support member is expanded. [Figure 37]37(A), 37(C), and 37(E) are explanatory diagrams showing examples of when the insertion holes arranged by the packaging bag manufacturing apparatus of the present invention are, for example, square-shaped, and Figures 37(A), 37(C), and 37(E) are oblique diagrams showing the shape of the insertion holes when the support member is folded in half, and Figures 37(B), 37(D), and 37(F) are plan diagrams showing the shape of the insertion holes when the support member is expanded. [Figure 38] 38(A) is an explanatory diagram showing the relationship between the shape of the cutout portion of the support member applied to the packaging bag of the present invention and the tip shape of the guide spatula, where FIG. 38(A) is an illustrative plan view of the essential parts when the cutout portion of the support member is semicircular in plan view and the tip shape of the guide spatula is semicircular, and FIG. 38(B) is an illustrative plan view of the essential parts when the cutout portion of the support member is semicircular and the tip shape of the guide spatula is a horizontally elongated rectangle. [Figure 39] 39(A) is a plan view of the essential parts when the cutout portion of the support member is a horizontally elongated rectangle in plan view and the tip shape of the guide spatula is semicircular; and FIG. 39(B) is a plan view of the essential parts when the cutout portion of the support member is a horizontally elongated rectangle and the tip shape of the guide spatula is a horizontally elongated rectangle. [Figure 40] This is a front view illustrating an example of how contents (products, etc.) are stored in a packaging bag according to the present invention, and is also a front view illustrating how the storage efficiency is improved when storing the contents (products, etc.). [Figure 41] 41A and 41B are explanatory diagrams showing an example of the manner in which contents (products, etc.) are stored in a conventional technology (conventional product) that is compared with an example of a packaging bag according to the present invention, assuming that a temporary edge seal portion is provided, where FIG. 41A is an oblique diagram showing the manner in which the support member is in a valley fold, and FIG. 41B is an oblique diagram showing the manner in which the support member is in a mountain fold. [Figure 42] 1 is a perspective view illustrating an example of an embodiment in which contents (products, etc.) are packaged in a packaging bag manufactured by a manufacturing method using the packaging bag manufacturing apparatus according to the present invention. [Figure 43] 43A is a perspective view illustrating an example of a state in which contents (products, etc.) are packaged in the conventional packaging bag, and FIG. 43B is a perspective view illustrating another example of a state in which contents (products, etc.) are packaged in the conventional packaging bag. [Figure 44] 44(A) is a perspective diagram showing an example of a state in which contents (products, etc.) are packaged in the other conventional packaging bag, and FIG. 44(B) is an enlarged view of a main part of FIG. 44(A). DETAILED DESCRIPTION OF THE INVENTION [Example]

[0038] Fig. 1 is a front view illustrating an example of a packaging bag according to the present invention, Fig. 2 is a partially omitted cross-sectional view taken along line AA in Fig. 1, Fig. 3 is an exploded perspective view of the packaging bag shown in Fig. 1 and Fig. 2, and Fig. 4 is a plan view illustrating the state of insertion holes in the package shown in Fig. 1 to Fig. 3. Fig. 5 is a perspective view illustrating an example of a method for filling (storing) contents into the packaging bag shown in Fig. 1 to Fig. 4, and Fig. 6 is a perspective view illustrating an example of a display state of contents (products, etc.) packaged in the packaging bag shown in Fig. 1 to Fig. 4. 5 and 6, the packaging bag 10 includes a storage section 12 capable of storing a longitudinal content C. An example of the content C is a cosmetic product that includes a stick-shaped portion (such as a curler or nail polish). The packaging bag 10 includes a bag body 14 having an openable portion 15 at one end or the other end in the vertical direction. In this Example 1, the lower end side in the vertical direction of the packaging bag 10 is formed to be openable when viewed from the front in FIG.

[0039] 1, 2, and 3, support member 16 is disposed inside bag body 14 in a folded state. Support member 16 folded in half has a folded portion 18 folded in half at one edge in the vertical direction, and a single cutout portion 22 is formed in the left-right center of folded portion 18 so as to straddle crease line 20 on the valley fold side of folded portion 18. Cutout portion 22 is formed in the shape of a horizontally elongated rectangle when viewed from the front, for example, as shown in FIG.

[0040] In this first embodiment, the folded support member 16 has a folded portion 18 at the upper edge in the vertical direction. When the bag body 14 is expanded in a direction perpendicular to the main surface of the bag body 14 to expand the folded portion 18 in the same direction (see, for example, FIGS. 3 to 6 ), the cutout portion 22 expands and opens together with the openable portion 15 in the same direction, and in particular, as shown in FIG. 4 , the cutout portion 22 becomes an insertion hole 22A that is horizontally elongated in a plan view and penetrates from one main surface to the other main surface of the support member 16. One end of the contents C in the length direction can be inserted into this insertion hole 22A, as shown in, for example, FIG. 5 . When the contents C are inserted through the insertion hole 22A of the support member 16 and stored in the storage section 12, the contents C are supported in an upright state in the storage section 12 by the cooperation of the support member 16 and the bag body 14. The bag body 14 and the support member 16 are formed of, for example, a sheet or film made of a heat-sealable plastic material, and in this case, each is composed of a laminate such as a laminate film including at least a base layer (not shown) and a sealant layer (not shown). The sealant layer is, for example, a heat-seal layer that imparts sealability (sealability) to the laminate by heat sealing.

[0041] As shown in Figures 1, 2, 4 and 5, when viewed in the main surface direction of the bag body 14 (for example, the front view direction in Figure 1), the bag body 14 includes a front member 26 having a vertically elongated rectangular shape, and a back member 28 formed to be approximately the same shape and size as the front member 26 and arranged opposite the front member 26. One left-right edge (left edge) and the other right-left edge (right edge) of the front member 26 and one left-right edge (left edge) and the other right-left edge (right edge) of the back member 28 are fixed by side seal portions 52L and 52R, respectively, and further, one up-down edge of the front member 26 and one up-down edge of the back member 28 are partially fixed by fixed end 24, and the other up-down end of the front member 26 and the other up-down end of the back member 28 are fixed by upper seal portion 50, thereby forming the bag body 14. In addition, as shown in Figure 6, at the upper end side of the bag body 14 in the vertical direction, a hanging hole 34 is arranged in the approximate center of the upper seal portion 50, for hanging and displaying the bag body 14.

[0042] 5 illustrates the side into which the product, i.e., the contents C, is inserted into the bag body 14, that is, the state in which the openable portion 15 is positioned on the upper side and one longitudinal end of the contents C is inserted through the insertion hole 22A. Also, FIG. 6 illustrates the state in which the openable portion 15 is sealed after the contents C are stored in the storage section 12 of the bag body 14. In this case, as seen in FIG. 6, the lower edge side in the vertical direction of the bag body 14 having the openable portion 15 is sealed by the sealing portion 56 after the contents C are stored in the storage section 12 of the bag body 14.

[0043] In this packaging bag 10, in particular, the other vertical edge of the support member 16 opposite the folded portion 18 of the support member 16 is aligned with one vertical edge of the bag body 14 when viewed in the main surface direction of the bag body 14 (for example, from the front in FIG. 1 ), thereby forming a fixed end 24 between the bag body 14 and the support member 16. In this Example 1, for example, when viewed from the front in FIG. 1 , the lower vertical edge of the support member 16 is aligned with the lower vertical edge of the bag body 14, thereby forming the fixed end 24 that fixes the inner surface of the bag body 14 to a portion of the outer surface of the support member 16. This fixed end 24 partially fixes the lower vertical edge of the inner surface of the support member 16, which is approximately at the center in the left-right direction, and the lower vertical edge of the outer surface of the support member 16, which is approximately at the center in the left-right direction.

[0044] 2 and 3, the support member 16 folded in half includes one folding piece 30 and the other folding piece 32. One folding piece 30 has an outer surface 30a and an inner surface 30b, and the other folding piece 32 has an outer surface 32a and an inner surface 32b. The outer surface 30a of one folding piece 30 faces the inner surface 26b of the front member 26, and the outer surface 32a of the other folding piece 32 faces the inner surface 28b of the back member 28. A valley fold line 20 is formed on the support member 16 between the inner surface 30b of one folding piece 30 and the inner surface 32b of the other folding piece 32.

[0045] As shown in Figures 2, 4 and 5, the above-mentioned fixed end 24 is composed of a fixed end 24F that partially fixes the outer surface 30a of one of the bent pieces 30 of the support member 16 to the inner surface 26b of the front member 26, and a fixed end 24B that partially fixes the outer surface 32a of the other bent piece 32 of the support member 16 to the inner surface 28b of the back member 28.

[0046] In this case, as seen in Figure 6, the fixed end 24 has the function of a fixed end temporary sealing portion for temporarily sealing the space between the inner surface 26b of the front member 26 and the outer surface 30a of one of the folded pieces 30 of the support member 16 with the fixed end 24A in order to make it easier to store the contents C into the storage section 12 of the bag body 14 through the openable portion 15, and also has the function of a fixed end temporary sealing portion for temporarily sealing the space between the inner surface 28a of the back member 28 and the outer surface 32a of the other folded piece 32 of the support member 16 with the fixed end 24B. After the contents C are stored in the storage section 12 of the bag body 14 through the openable section 15, the openable section 15 is sealed by the sealing section 56. [Example]

[0047] Fig. 7 is a front view illustrating another example of the packaging bag according to the present invention, and Fig. 8 is a partially omitted cross-sectional view taken along line BB in Fig. 7. Fig. 9 is an exploded perspective view of the packaging bag shown in Figs. 7 and 8. Fig. 10 is an exploded perspective view illustrating an example of a method for filling contents into the packaging bag shown in Figs. 7 to 9, and Fig. 11 is a partially cutaway perspective view illustrating an example of a state in which contents (products, etc.) are packaged inside the packaging bag shown in Figs. 7 to 9. The packaging bag 10 according to the second embodiment shown in FIGS. 7 to 11 differs from the packaging bag 10 according to the first embodiment shown in FIGS. 1 to 6, particularly in that it has a gusset portion.

[0048] That is, the packaging bag 10 according to Example 2 is a standing-pouch type packaging bag 10 including a gusset portion 36, and the gusset portion 36 is folded in half, for example, mountain-folded, to form a bottom member 36A. The bottom member 36A is disposed at the bottom of the bag body 14, with its folded portion 38 opposing the folded portion 18 of the support member 18 in the up-down direction of the bag body 14. The bottom member 36A has one bent piece 42 and the other bent piece 44, with a fold line 40 between the one bent piece 42 and the other bent piece 44. When the bottom member 36A is folded in half, the outer surface 42a of one bent piece 42 faces the inner surface 26b of the front member 26, and the outer surface 44a of the other bent piece 44 faces the inner surface 28b of the back member 28. Furthermore, the bottom member 36A folded in half has a notch 46L and a notch 46R at one end and the other end in the left-right direction, respectively.

[0049] In this Example 2, the bag body 14, the support member 16, and the bottom member 36A are formed of, for example, a sheet or film made of a plastic material having heat fusion properties, and in this case, each is composed of a laminate such as a laminate film including at least a base layer (not shown) and a sealant layer (not shown). The sealant layer is, for example, a heat seal layer that imparts sealability (sealability) to the laminate by heat sealing.

[0050] In this second embodiment, a laminate film having a layer structure of, for example, PET (polyethylene terephthalate) / adhesive / LLDPE (linear low-density polyethylene) is used as the front member 26, back member 28, and bottom member. A laminate film having a layer structure of ONY-OPP (biaxially oriented nylon-biaxially oriented polypropylene) / adhesive / CPP (plain polypropylene) can also be used. Furthermore, if there is a demand for aluminum vapor deposition on the back surface of the bag body 14 (back member 28), a three-layer structure (PET / adhesive / aluminum vapor-deposited PET / adhesive / LLDPE, etc.) can also be used. On the other hand, a laminate film having a layer structure of LLDPE / adhesive / PET / adhesive / LLDPE (or CPP) is used for the support member 16. Alternatively, a laminate film having a layer structure of CPP / adhesive / ONY·OPP / adhesive / CPP can be used for the support member 16.

[0051] The bottom member 36A is secured at one and the other left-right edge portions of the outer surface 42a of one of the bent pieces 42 of the bottom member 36A to one and the other left-right edge portions of the inner surface 26b of the front member 26, and at one and the other left-right edge portions of the outer surface 44a of the other bent piece 44 of the bottom member 36A to one and the other left-right edge portions of the inner surface 28b of the back member 28. In addition, the lower vertical edge portion of the outer surface 42a of one of the bent pieces 42 of the bottom member 36A is secured to the lower side of the inner surface 26b of the front member 26, and the lower vertical edge portion of the outer surface 44a of the other bent piece 44 of the bottom member 36A is secured to the lower side of the inner surface 28b of the back member 28.

[0052] In this packaging bag 10, one edge and the other edge in the left-right direction of the bottom member 36A have fused portions 48L and 48R as local seal portions, respectively, and the fused portions 48L and 48R join the front member 26 and the back member 28. The fused portions 48L and 48R are areas where the sealant layers (heat seal layers) of the front member 26 and the back member 28 are locally bonded to each other through the cutout portions 46L and 46R.

[0053] In the above-described first and second embodiments, when the openable portion 15 of the bag body 14 is expanded in a direction perpendicular to the main surface of the bag body 14 and the notch portion 22 is expanded and opened, the diameter of the insertion hole 22A (see, for example, FIGS. 4, 5, 6, 10, and 11) which is a horizontally elongated rectangle in a plan view may be formed to be at least larger than the maximum outer diameter portion of the rod-shaped contents C. Furthermore, the insertion hole 22A may not only be circular in a plan view, but also may be formed to be larger than the maximum outer diameter portion of the body C of the rod-shaped contents C. b Depending on the form, particularly the cross-sectional shape, for example, a rectangular shape in plan view, a square shape in plan view, a triangular shape in plan view, an elliptical shape in plan view, or other shapes in plan view may also be appropriately adopted.

[0054] In the above-mentioned second embodiment, the length of the support member 16 in the depth direction (the direction perpendicular to the main surfaces of the front member 26 and the back member 28 as viewed in Figures 9, 10, and 11) does not normally need to be made larger than the depth direction length D0 of the gusset portion 36, as shown in Figure 12, for example, and in this case, the depth length D1 of the support member 16 is formed so as not to open beyond the depth length D0 of the bottom member 36A.

[0055] This is because, when the bag body 14 is expanded in a direction perpendicular to its main surface, the distance (depth length D1) between the front member 26 and the back member 28 narrows toward the top of the bag body 14, as shown in Fig. 12(A), for example. Therefore, if the depth length D2 of the support member 16 is large, the excess portion gets in the way, causing the support member 16 to bulge in the depth direction of the bag body 14, as shown in Fig. 12(B), for example. In this case, distortion occurs at the bonded portions of the support member 16, the front member 26, and the back member 28 and in the surrounding areas, resulting in bulging portions above the bonded portions. This deteriorates the appearance of the bag body 14 itself, ultimately leading to problems such as a loss of aesthetic appeal for the packaging bag 10. When the vertical lengths of bottom member 36A and support member 16 exceed a certain level, depth D2 of support member 16 will only open within the range allowed by the distance (depth D1) between front member 26 and back member 28. On the other hand, since the vertical length of support member 16 varies depending on the desired position for supporting the contents stored in bag body 14, it is also possible to make depth D1 of support member 16 greater than depth D0 of gusset portion 36.

[0056] In the packaging bag 10 according to Examples 1 and 2 described above, when a rod-shaped content C is stored in the storage section 12, first, the front member 26 and the back member 28 of the bag body 14 are opened and separated in a direction perpendicular to their main surfaces, as shown in Fig. 6. Then, the outer surface 30a of one folded piece 30 of the support member 16 and the outer surface 32a of the other folded piece 32 are opened in the same direction together with the front member 26 and the back member 28, respectively. At this time, the single cutout portion 22 of the support member 16 is also opened and spread in the same direction, and becomes an insertion hole 22A having a horizontally elongated rectangular shape in a plan view, as shown in Fig. 6.

[0057] In this way, in the packaging bag 10 according to Examples 1 and 2, a rod-shaped content C inserted into a single insertion hole 22A of the support member 16 is supported in an upright state at least in two or more locations by the cooperative action of at least a portion of the peripheral edge of the insertion hole 22A and a portion of the bag body 14. Therefore, the rod-shaped content C can be stably stored in an upright state in approximately the center of the bag body 14. In this case, the packaging bag 10 according to Example 2 has a gusset portion 36 formed at the bottom, thereby ensuring the self-standing ability of the bag body 14. That is, in this packaging bag 10, the rod-shaped contents C are stored in the storage portion 12 in an upright state, and while maintaining this state, the packaging bag 10 can be placed on, for example, a display stand in an appropriately self-standing state.

[0058] Furthermore, when removing a rod-shaped content C from the packaging bag 10 according to Examples 1 and 2, the upper end of the bag body 14 is opened by appropriate opening means, and the rod-shaped content C is removed through the insertion hole 22A of the support member 16. As the opening means, for example, a V-shaped, U-shaped, semicircular, or other notch may be provided on one and / or the other of the left and right sides of the upper part of the bag body 14 to facilitate manual opening. As the opening means, for example, an opening assist line such as a perforation or a half cut made by a laser beam may be provided. Furthermore, in addition to the unsealing means described above, an openable and closable plastic fastener (not shown) may be provided. Furthermore, an opening assist line may be printed or otherwise provided on the upper side of the bag body 14 as a guide when opening it with scissors or the like.

[0059] In the packaging bag 10 of Example 1, the bag body 14 is composed of the bag body 14 and the support member 16, and in the packaging bag 10 of Example 2, the bag body 14 is composed of the bag body 14, the support member 16, and the bottom member 36A.Therefore, the packaging bags 10 of Examples 1 and 2 both have a simple structure, which makes it easy to simplify the manufacturing process. Furthermore, in this packaging bag 10, the bag body 14 and the support member 16 are formed from a sheet or film made of a plastic material, so there is no need for separate disposal, making disposal easy.

[0060] 11, in the packaging bag 10 according to Example 2, the body portion Cb of the rod-shaped contents C is in line contact with a portion of the peripheral edge of the single insertion hole 22A of the support member 16, and the tip portion Ct of the contents C is simply placed in contact with the upper surface portion 37A of the bottom surface member 36A. Therefore, after the upper end portion of the bag body 14 is opened by an appropriate opening means, the rod-shaped contents C can be easily removed by simply pulling them out through the insertion hole 22A of the support member 16. That is, in this packaging bag 10, the contact area between the support member 16 and the contents C is small, and therefore there is little resistance when removing the contents, compared to conventional packaging products such as those in the prior art disclosed in Patent Document 1, in which the narrow joint and the contents are in surface contact with each other, resulting in a large contact area and high resistance when removing the contents. That is, the rod-shaped contents C can be easily removed from the support member 14 by simply pulling them out through the insertion hole 22A of the support member 16.

[0061] Furthermore, in the packaging bags 10 according to Examples 1 and 2, as described above, the single cutout portion 22 of the support member 16 is formed so as to straddle the fold line 20, as shown in particular in Figures 3 and 9. That is, when the support member 16 folded in half is unfolded (spread open), the cutout portion 22 becomes an insertion hole 22A that is rectangular in shape when viewed from above, and the insertion hole 22A is arranged symmetrically in the left-right and front-rear directions (depth direction) of the support member 16, with the fold line 20 as the reference line. In this case, as shown in Figures 13(A) and 13(B), for example, a stick-shaped content C is guided to the insertion hole 22A along the inner surface 30b of one folded piece 30 and the inner surface 32b of the other folded piece 32 of the support member 16, which sandwich the fold line 20 therebetween, making it easy to insert the stick-shaped content C into the insertion hole 22A.

[0062] However, as shown in (C) of Figure 13, if the support member 16 is folded in a mountain shape when viewed in the insertion direction of the contents C, even if an attempt is made to insert a rod-shaped content C into the insertion hole 22A, the content C may get caught on the fold line (ridge line) of the mountain fold and shift out of the insertion hole 22A, which may prevent the content C from being inserted accurately into the insertion hole 22A. In this case, as shown in Figure 13(D), a force acts in the direction opposite to the folding direction on the attachment portion (fixed end 24F) between the outer surface 30a of one of the bent pieces 30 of the support member 16 and the inner surface 26b of the front member 26, and on the attachment portion (fixed end 24B) between the outer surface 32a of the other bent piece 32 and the inner surface 28b of the back member 28, and a bending load is applied to the attachment portion (fixed end 24F) and the attachment portion (fixed end 24B).

[0063] As a result, there is a possibility that the attachment portion (fixed end 24F) between the outer surface 30a of one of the bent pieces 30 of the support member 16 and the inner surface 26b of the front member 26 and the surrounding area thereof, and the attachment portion (fixed end 24B) between the outer surface 32a of the other bent piece 32 and the inner surface 28b of the back member 28 and the surrounding area thereof may break, which may ultimately result in the support member 16 coming off the front member 26 and the back member 28.

[0064] In the packaging bags 10 according to Examples 1 and 2, unless the formation position of the insertion hole 22A is approximately the center in the longitudinal direction of the valley fold line 20 of the support member 16, the stick-shaped contents C will lean in the left-right and / or depth direction of the bag body 14 when viewed from the front in Fig. 14, for example, making it difficult to stably support the contents C in an upright state in an approximately vertical manner by the support member 16. In other words, the stick-shaped contents C will lean toward the front member 26 and the back member 28 with respect to the insertion hole 22A of the support member 16, or will lean toward one edge or the other edge in the left-right direction of the bag body 14, which may result in the contents C falling out of the insertion hole 22A of the support member 16.

[0065] Furthermore, this packaging bag 10 does not have any fastening portions corresponding to the trapezoidal narrow joint portion 71 as shown in the conventional packaged product disclosed in, for example, Patent Document 1, and the areas of the fastening portions between the front member 22 and the back member 24 and the support member 16 are also small. Therefore, in the packaging bag 10 according to Examples 1 and 2, even if the fastening portions are fastened by, for example, heat sealing, there is no risk of deformation such as wrinkles or tension occurring in the bag body 14 due to the heat shrinkage caused by the heat sealing, and the aesthetic appearance of the bag body 14 is not impaired. Furthermore, the heat shrinkage caused by the heat sealing does not affect portions of the bag body 14 other than the fastening portions, such as the bottom member 36A side, and therefore the self-supporting ability of the packaging bag 10 is not reduced.

[0066] Furthermore, the packaging bag 10 according to Examples 1 and 2 has a hanging hole 34 for hanging the bag body 14, for example, on one side of the bag body 14 in the vertical direction. Therefore, by inserting a hanging device 35 such as a hook portion provided on a store shelf or wall, for example, into the hanging hole 34, the packaging bag 10 can be displayed in a hanging state, as shown in Figure 6, for example.

[0067] In addition, the outer shape of the bag body 14 of this packaging bag 10, when viewed from the front, may be, in addition to the vertically elongated rectangular shape described above, for example, a horizontally elongated rectangular shape, a square shape, or other polygonal shape, or may be a circle, an oval, or an irregular shape, and can be changed appropriately depending on the shape of the rod-shaped contents C, the design of the bag body 14, etc.

[0068] Next, an example of an apparatus for manufacturing packaging bag 10 according to the present invention will be described with reference to Figures 15, 16, 17, 18, 19, 20, 21, 22, 23, and 24. An example of an apparatus for and a method for manufacturing packaging bag 10 (standing pouch-type packaging bag) according to the above-mentioned Example 2 will be described below. Note that Figures 21 to 24 also serve as drawings showing an example of a method for manufacturing packaging bag 10 according to Example 2 already described with reference to Figures 7 to 11. This manufacturing apparatus 10ME is an apparatus for manufacturing packaging bags, including a strip-shaped front member raw film 76 that becomes the front member 26, a back member raw film 78 that is arranged opposite the front member raw film 76 and becomes the back member 28, and a support member raw film 90 that is arranged in a doubled state between the front member raw film 76 and the back member raw film 78 and becomes the support member 16. As shown in FIGS. 15 and 16 , the apparatus includes a body material raw film holding roller 62 that holds a body material raw film 60 in a roll that becomes the base material for the front member raw film 76 and the back member raw film 78. The body material raw film holding roller 62 rotatably holds the body material raw film 60. The body material raw film 60 is unwound by a feed roller and transported to the body material film cutting mechanism 70 via guide rollers 64a, 64b, 64c, and 64d.

[0069] In the body material film cutting mechanism 70, the body material raw film 60 is transported via guide rollers 72a, 72b, and 72c to a separation section (not shown) equipped with a separation blade. In the separation section, the body material raw film 60 is cut at the center in the width direction and separated into a front member raw film 76 and a back member raw film 78. In the body material film cutting mechanism 70, the front member raw film 76 and the back member raw film 78 are redirected by an M-shaped plate or a turn bar (not shown) or the like, and are delivered downstream so that their inner surfaces face each other with a gap between them in the vertical direction.

[0070] 16, for example, an upper dancer roller unit 80 and a lower dancer roller unit 82 are disposed on the downstream side of this manufacturing apparatus 10ME, spaced apart in the vertical direction of the manufacturing apparatus 10ME. In this case, the front member raw film 76 is transported via guide rollers 74a and 74b to the downstream upper dancer roller unit 80, and similarly, the back member raw film 78 is transported via guide rollers 74c and 74d to the downstream lower dancer roller unit 82.

[0071] In the upper dancer roller unit 80 and the lower dancer roller unit 82, tension is applied to the front member raw film 76 and the back member raw film 78, respectively, and the dancer roll units 80, 82 are constantly moving left and right (in the conveying direction) as viewed in Fig. 15, so that the conveying mode of the front member raw film 76 and the back member raw film 78 after the upper dancer roller unit 80 and the lower dancer roller unit 82 (downstream side) is switched from continuous conveying to intermittent conveying. The front member raw film 76 and the back member raw film 78 conveyed downstream via the upper dancer roller unit 80 and the lower dancer roller unit 82 are conveyed between guide rollers 84a and 84b so that the inner surfaces of the front member raw film 76 and the back member raw film 78 face each other at a predetermined interval in the up-down direction, as shown in Fig. 16.

[0072] On the other hand, a roll of bottom member raw film 86 is rotatably held by a bottom member raw film holding roller 88, and a roll of support member raw film 90 is rotatably held by a support member raw film holding roller 91. The bottom member raw film 86 is As shown in Figures 15, 16 and 17, The bottom member raw film 86 is transported from the bottom member raw film holding roller 88 to a bottom member folding mechanism 94 via guide rollers 92a, 92b, 92c, 92d, and 92e. The bottom member folding mechanism 94 includes a triangular plate member 96. When the bottom member folding mechanism 94 sends the bottom member raw film 86 downstream, the center of the width direction of the bottom member raw film 86 is brought into contact with a corner of the triangular plate member 96, thereby forming a folded portion 38 along the length direction of the bottom member raw film 86. That is, the triangular plate member 96 is a plate-shaped member having an approximately equilateral triangle shape, and one corner thereof is configured to abut against the bottom member raw film 86 supplied from the roll-shaped bottom member raw film holding roller 88, forming a folded portion 38 near the center of the width of the bottom member raw film 86 [bottom member raw film 86 folding process]. The triangular plate member 96 is also formed to be able to move appropriately in the width direction of the bottom member original film 86. The movement of the triangular plate member 96 corrects any misalignment of the bottom member original film 86 in the width direction as the folded bottom member original film 86 is transported downstream. Furthermore, the bottom member original film 86 is prevented from wobbling in the width direction by the cooperation of guide spatulas 104a and 104b, which are disposed downstream of the triangular plate member 96 and will be described later. Therefore, the bottom member original film 86 is transported downstream in the correct transport position without being displaced in the width direction.

[0073] On the other hand, the support member raw film 90 is guided from the support member raw film holding roller 91 through guide rollers 99a, 99b, 99c, 99d, and 99e to the folding mechanism for the support member. The folding mechanism 100 for the support member has a structure similar to that of the folding mechanism 94 for the bottom member, and includes a triangular plate member 101. In the folding mechanism 100 for the support member, when the support member raw film 90 is sent downstream, the central portion of the support member raw film 90 in the width direction is brought into contact with a corner of the triangular plate member 101, thereby forming a folded portion 18 along the length direction of the support member raw film 90. do. That is, the triangular plate member 101 is a plate-shaped member of a substantially equilateral triangle, and one corner thereof abuts against the support member raw film 90 supplied from the roll-shaped support member raw film holding roller 91, and the support The folded portion 18 is formed near the center of the width direction of the raw film 90 (see FIG. 18). [Process for folding the support member raw film 90 in half] . The triangular plate member 101 is also formed to be able to move appropriately in the width direction of the support member raw film 90. The movement of the triangular plate member 101 corrects the misalignment of the support member raw film 90 in the width direction as the folded support member raw film 90 is transported downstream. Furthermore, the cooperation of the guide spatulas 108a to 108d, which are disposed downstream of the triangular plate member 101 and will be described later, suppresses the wobble of the support member raw film 90 in the width direction. Therefore, the support member raw film 90 is transported downstream in the correct transport position without being displaced in the width direction.

[0074] The folded bottom member raw film 86 transported downstream from the folding mechanism 94 for the bottom member and the folded support member raw film 90 transported downstream from the folding mechanism 100 for the support member are transported to the notch mechanism 98 for the bottom member and the notch mechanism 102 for the support member, respectively. A punch device (not shown), for example, is used for each of the bottom member notch mechanism 98 and the support member notch mechanism 102. The punch device punches out the bottom member raw film 86 folded in half and the support member raw film 90 folded in half, forming notch portion 22 and notch portions 46L, 46R in the folded portion 38 of the bottom member raw film 86 and the folded portion 18 of the support member raw film 90, respectively.

[0075] The punch device (not shown) has a male blade and a female blade, and the male blade is positioned above the female blade, and the folded portion 38 of the bottom member raw film 86 is guided between the male blade and the female blade. Furthermore, each time the bottom member raw film 86 is intermittently fed, when the bottom member raw film 86 is temporarily stopped, the male blade is pressed down by a cylinder, and the bottom member raw film 86 is sandwiched between the male blade and the female blade. Therefore, the male blade and the female blade cut the center of the folded portion 38 of the bottom member raw film 86 into a horizontally elongated rectangular shape in a plan view, and notches 46L and 46R are formed in the bottom member raw film 86. [Bottom member notch mechanism 98] A similar punching device (not shown) cuts the center of the folded portion 18 of the support member raw film 90 into a horizontally long rectangle in plan view, forming a notch 22 [support member notch mechanism 102].

[0076] As shown in Figures 15 and 16, the bottom member raw film 86 in which the notches 46L and 46R have been formed by the bottom member notching mechanism 98, and the support member raw film 90 in which the notches 22 have been formed by the support member notching mechanism 102, are transported downstream and transported between guide rollers 84a and 84b. The bottom member raw film 86 and the support member raw film 90 are transported so as to face each other at a predetermined interval in the vertical direction, as shown in Figure 16.

[0077] In manufacturing apparatus 10ME, bottom member raw film 86 and support member raw film 90 are folded in half by bottom member folding mechanism 94 and support member folding mechanism 100, respectively, and transported downstream. As shown in Fig. 16, guide spatulas 104a, 104b and 108a, 108b, 108c, 108d, which serve as guide jigs, ensure that bottom member raw film 86 and support member raw film 90 are transported downstream in the correct posture without lateral wobble in the width direction. Guide spatulas 104a, 104b and 108a, 108b, 108c, 108d are disposed from the downstream side of bottom member folding mechanism 94 and support member notch mechanism 102 to the upstream side of welding mechanism 130.

[0078] In this case, guide spatulas 104a and 104b are inserted inside bottom member original film 86 that has been folded in half and come into contact with the inner folded portion 38 thereof, thereby accurately guiding and positioning the posture of bottom member original film 86 that has been folded in half. Also, guide spatulas 108a, 108b, 108c, and 108d are inserted inside support member original film 90 that has been folded in half and come into contact with the inner folded portion 18 thereof, thereby accurately guiding and positioning the posture of support member original film 90 that has been folded in half. The bottom member original film 86 and the support member original film 90 folded in half are transported between the guide rollers 84a and 84b while being accurately guided and positioned by the guide spatulas 104a, 104b and 108a, 108b, 108c, and 108d.

[0079] An introduction mechanism 106 is disposed downstream of the support member notch mechanism 102. The introduction mechanism 106 includes guide rollers 84a and 84b. The front member raw film 76 and the back member raw film 78 are introduced between the guide rollers 84a and 84b, and the bottom member raw film 86 and the support member raw film 90 are introduced so as to be sandwiched between the front member raw film 76 and the back member raw film 78, as shown in FIG. 18 [Introduction Process].

[0080] In this manufacturing apparatus 10ME, as shown in Figures 15, 17 and 18, in particular, the other widthwise edge of the support member raw film 90 opposite its folding portion 18 is aligned with one widthwise edge of the front member raw film 76 and the back member raw film 78, and further, the other widthwise edge of the bottom member raw film 86 opposite its folding portion 38 is aligned with the other widthwise edge of the front member raw film 76 and the back member raw film 78, so that the bottom member raw film 86 and support member raw film 90 are introduced between the front member raw film 76 and the back member raw film 78.

[0081] In the introducing device 106, the bottom member raw film 86 and the support member raw film 90 are arranged between the front member raw film 76 and the back member raw film 78 as shown in Fig. 18, and the raw film webs 76, 78, 86, and 90 are then transported to a transport conveyor 110 located further downstream. The transport conveyor 110 is provided with, for example, three feed roller units 112, 114, and 116 spaced apart in the longitudinal direction. The feed roller units 112, 114, and 116 feed the raw film webs 76, 78, 86, and 90, which are transported via guide rollers 84a and 84b, along the longitudinal direction of the transport conveyor 110 from the upstream side to the downstream side of the transport conveyor 110.

[0082] With the folded bottom member raw film 86 and support member raw film 90 sandwiched between the front member raw film 76 and the back member raw film 78, each raw film is transported from the guide rollers 84a and 84b of the introduction device 106 to the downstream welding mechanism 120 [welding process]. As shown in FIGS. 15 and 16, the welding mechanism 120 Long The directional welding mechanism 130 is included. LongThe directional welding mechanism 130 is a mechanism (raw material lengthwise welding process) that welds one end and the other end of the front member raw material film 76, the back member raw material film 78, and the support member raw material film 90 in the width direction along the longitudinal direction of the front member raw material film 76, the back member raw material film 78, and the support member raw material film 90 (see Figures 15 and 17, etc.).

[0083] In addition, the original Long The directional welding mechanism 130 includes a welding prevention member introducing mechanism 170. As shown in Figures 15, 17, 18, 19, and 20, the welding prevention member introducing mechanism 170 is a mechanism (welding prevention member introducing step) that introduces the support member raw film 90 between the front member raw film 76 and the back member raw film 78 in such a manner that a welding prevention member 172 that prevents welding between the inner sides of the support member raw film 90 is sandwiched between one inner side and the other inner side of the support member raw film 90 that has been folded in half by the support member folding mechanism 100. As the welding prevention member 172, for example, a Teflon sheet is used.

[0084] 19 and 20, the adhesion prevention member introduction mechanism 170 includes, for example, two adhesion prevention member supports 174a and 174b, which include pillar-shaped support columns 176a and 176b, respectively. As shown in, for example, FIGS. 16 and 17, the support columns 176a and 176b are arranged to cover the area of ​​the first welding mechanism 132 when viewed in the longitudinal direction of the transfer conveyor 110. In this case, the support columns 176a and 176b are arranged in an area extending from the guide spatula 108d to the first feed roller unit 112, as shown in FIGS. 15 and 16. In particular, as shown in Figure 17, one support pillar 176a is arranged downstream of the guide spatula 108d with a small gap therebetween, and the other support pillar 176b is arranged upstream of the first feed roller portion 112 with a small gap therebetween.

[0085] The two support columns 176a and 176b are provided with holding shafts 178a and 178b, respectively, that hold the welding prevention member 172. The holding shafts 178a and 178b extend from their upper portions at approximately a right angle toward the first welding mechanism 132 on the transfer conveyor 110. The welding prevention member 172 is hung so as to be wrapped around the holding shafts 178a and 178b, as shown in FIG.

[0086] In addition, the original Long 15, 16, 17, 19, and 20, the directional welding mechanism 130 includes a first welding mechanism 132 disposed downstream of the welding prevention member support 174a. The first welding mechanism 132 is a mechanism [first welding step] that welds the outer surface 30a of one folded piece 30 of the support member original film 90 to the inner surface 26b of the front member original film 76 and welds the outer surface 32a of the other folded piece 32 of the support member original film 90 to the inner surface 28b of the back member original film 78, with the welding prevention member 172 sandwiched between the inner surface 30b of one folded piece 30 of the support member original film 90 and the inner surface 32b of the other folded piece 32. In this case, the widthwise length of the anti-welding member 172 is formed so that it extends from one end side of the widthwise direction of the support member raw film 90 to the vicinity of the cutout portion 22, as shown, for example, in the area surrounded by the dotted line α in Figure 18.

[0087] The first welding mechanism 132 includes an end temporary fixing welding mechanism 134. The end temporary fixing welding mechanism 134 sandwiches a welding prevention member 172 between the inner surface 30b of one folded piece 30 of the support member original film 90 and the inner surface 32b of the other folded piece 32, as shown in Figures 21 and 24, and welds the support member original film 90 on the side facing the notch 22 of the support member original film 90 at intervals in the longitudinal direction of the front member original film 76, the back member original film 78, and the support member original film 90. The mechanism is a temporary fastening mechanism [end temporary fastening welding process] in which the widthwise central end of the outer surface 30a of one of the folded pieces 30 of the film 90 is partially welded to the inner surface 26b of the front member raw film 76 to form one fixed end 24F, and the widthwise central end of the outer surface 32a of the other folded piece 32 of the support member raw film 90 facing the cutout portion 22 of the support member raw film 90 is partially welded to the inner surface 28b of the back member raw film 78 to form the other fixed end 24B.

[0088] 21 and 22(A), in manufacturing apparatus 10ME for packaging bags 10 (standing-pouch type packaging bags) according to Example 2, one fixed end 24F is formed by bonding inner surface 26b of front member 26 to outer surface 30a of one folded piece 30 of support member 16 at the top edge in the vertical direction and in the center in the left-right direction of the packaging bag 10 to be manufactured by edge temporary fastening welding mechanism 134, and the other fixed end 24B is formed by bonding inner surface 28b of back member 28 to outer surface 32a of the other folded piece 32 of support member 16. One fixed end 24F and the other fixed end 24B are formed as edge temporary fastening point seal portions. In this end temporary fixing and welding mechanism 134, a welding prevention member 172 is sandwiched between the front member raw film 76 and the back member raw film 78, for example, in the area surrounded by the dotted line α in Figure 18, so that the inner surfaces of the support member raw film 90 are not welded together, and fixed ends 24 (24F, 24B) are formed, as shown in Figures 22 (A) and (B).

[0089] The first welding mechanism 132 also includes a middle portion temporary fixing welding mechanism 136. The middle portion temporary fixing welding mechanism 136 is a mechanism that temporarily fixes the outer surface 30a of one of the folded pieces 30 of the support member raw film 90 to the inner surface 26b of the front member raw film 76 at the center in the width direction of the support member raw film 90 and at a predetermined distance in the longitudinal direction, with a welding prevention member 172 sandwiched between the inner surface 30b of one of the folded pieces 30 of the support member raw film 90 and the inner surface 32b of the other folded piece 32, as shown in Figures 21 and 24 , and also partially welds and temporarily fixes the outer surface 32a of the other folded piece 32 of the support member raw film 90 to the inner surface 28b of the back member raw film 78 [middle portion temporary fixing welding process]. In manufacturing apparatus 10ME for packaging bags 10 (standing-pouch type packaging bags) according to Example 2, as shown in Figures 21 and 22(B), for example, front member 26, support member 16, and back member 28 are fixed together by intermediate temporary fastening mechanism 136 at one and the other left-right edge portions of packaging bag 10 to be manufactured and at the vertical middle portion thereof, more specifically, at one and the other left-right edge portions of support member 16 and at the vertical middle portion thereof, to form intermediate temporary fastening portions 53LP and 53RP. Intermediate temporary fastening portions 53LP and 53RP are formed as intermediate temporary fastening point seal portions. In this intermediate temporary fixing welding mechanism 136, a welding prevention member 172 is sandwiched between the front member raw film 76 and the back member raw film 78, for example, in the area surrounded by the dotted line α in Figure 18, so that the inner surfaces of the support member raw film 90 are not welded together, and intermediate temporary fixing portions 53LP and 53RP are formed, as shown in (A) and (B) of Figure 22. 21 and 24, the fixed ends 24 (24F, 24B) formed by the end temporary fixing welding mechanism 134 of the first welding mechanism 132 are formed at positions opposite the notched portions 22 in the width direction of the support member raw film 90. Also, the middle temporary fixing portions 53LP and 53RP formed by the middle temporary fixing welding mechanism 136 are formed at approximately equal intervals in the longitudinal direction of the support member raw film 90. The end temporary fastening welding mechanism 134 and the middle temporary fastening welding mechanism 136 of the first welding mechanism 132 described above weld the folded portion 18 of the support member raw film 90 so that it can be expanded. That is, in the bag body 14 of the packaging bag 10 to be manufactured, the front member raw film 76, the back member raw film 78, and the support member raw film 90 are welded together so that the support member 16 can be expanded in the depth direction of the bag body 14 (between the front member 26 and the back member 28) when the openable portion 15 is opened. Additionally, the first welding mechanism 132 includes a welding mechanism for forming the lower seal portion 54 of the bottom member 36A.

[0090] 15 and 17, the first welding mechanism 132 includes a heat seal bar 137, which forms the fixed ends 24F, 24B as end temporary fastening point seal portions and the intermediate temporary fastening portions 53LP, 53RP as intermediate temporary fastening point seal portions. Furthermore, the first welding mechanism 132 includes a heat seal bar 139, which forms the lower seal portion 54. The first welding mechanism 132 also includes a first cooling mechanism 150, which is provided downstream of the first welding mechanism 132 and between the first feed roller unit 112 and the second feed roller unit 114 in the longitudinal direction of the transport conveyor 110. The first cooling mechanism 150 is composed of a cooler 152 including a cooling plate (not shown) that cools the portion welded by the heat seal bar 137, and a cooler 154 including a cooling plate (not shown) that cools the portion welded by the heat seal bar 139 [first cooling step].

[0091] On the other hand, the welding mechanism 120 further includes a web width direction welding mechanism 140. As shown in FIG. 15, the web width direction welding mechanism 140 includes a second welding mechanism 142 disposed downstream of the cooler 154 of the first cooling mechanism 150. The second welding mechanism 142 Figure 23 1, the second welding mechanism 142 is a mechanism for welding the front member raw film 76, the back member raw film 78, and the support member raw film 90 from one end to the other end in the width direction of the front member raw film 76, the back member raw film 78, and the support member raw film 90 at intervals in the longitudinal direction of the front member raw film 76, the back member raw film 78, and the support member raw film 90 [second welding step]. More specifically, the second welding mechanism 142 performs the first welding mechanism 132 described above, and then welds the folded support member raw film 90. This welding mechanism welds the front member raw film 76, the back member raw film 78 and the support member raw film 90 from one end to the other in the width direction at intervals in the longitudinal direction of the front member raw film 76, the back member raw film 78 and the support member raw film 90, in a state in which no welding prevention member 172 is sandwiched between the inner surface 30b of one folding piece 30 and the inner surface 32b of the other folding piece 32 of FIG. 0 [raw material width direction welding process].

[0092] In manufacturing apparatus 10ME for packaging bag 10 (standing-pouch type packaging bag) according to Example 2, side seal portions 52L, 52R (side seal portions) are formed by second welding mechanism 142 as shown in Fig. 24. At this time, fused portions 48L and 48R are formed at one edge portion and the other edge portion in the left-right direction of bottom member 36A through cutout portions 46L and 46R, respectively, as portions where the sealant layers (heat seal layers) of front member raw film 76 and back member raw film 78 are locally bonded to each other, and these fused portions 48L and 48R locally join front member raw film 76 and back member raw film 78.

[0093] In this case, the second welding mechanism 142 shown in Figures 15 and 16 includes a plurality of heat seal bars (not shown), which are heat seal bars for forming side seal portions 52L, 52R (side seal portions). The second welding mechanism 142 is also provided with a second cooling mechanism 160 located downstream of the second welding mechanism 142. The second cooling mechanism 160 is configured with a cooler (not shown) including a cooling plate (not shown) that cools the portions welded by the multiple heat seal bars of the second welding mechanism 142 [second cooling mechanism].

[0094] The above The fixed ends 24F, 24B, the intermediate temporary fastening portions 53LP, 53RP, and the bottom seal portion 54 are formed by the first welding mechanism 132, and the side seal portions 52L, 52R (side seal portions) are formed by the second welding mechanism 142. The long front member raw film 76, the back member raw film 78, the support member raw film 90, and the bottom member raw film 86 are (The underlined parts will be referred to as "base material raw film 10A of packaging bag 10" below for convenience.) is then transported further downstream to hanging hole forming machine 180, notch forming machine 190, and slitting mechanism 200. Hanging hole forming machine 180, notch forming machine 190, and slitting mechanism 200 are disposed between second cooling mechanism 160 and third feed roller unit 116. Hanging hole forming mechanism 80 and notch forming mechanism 190 are disposed in the same location.

[0095] 23 and 26 is appropriately formed in the base material raw film 10A by the hanging hole forming mechanism 180. In addition, when forming a notch (not shown) as an appropriate opening means in the base material raw film 10A at the upper end of the bag body 14, the notch (not shown) is appropriately formed by the notch forming mechanism 190. Furthermore, the base material raw film 10A, on which the hanging holes 34 and notches (not shown) have been formed as appropriate, is transported further downstream to the slitting mechanism 200. The second welding unit 142, the second cooling mechanism 160, the hanging hole forming mechanism 180, the notch forming mechanism 190, and the slitting mechanism 200 are sequentially arranged between the second feed roller unit 114 and the third feed roller unit 116 in the longitudinal direction of the transport conveyor 110.

[0096] In the slitting mechanism 200, for example, one end side and the other end side of the base material raw film 10A in the width direction are trimmed along the dotted line shown in Figure 24, in this case, the dotted line X extending in the width direction of the base material raw film 10A [trimming process]. Thereafter, the trimmed base material raw film 10A is conveyed to a cutting mechanism 210 disposed downstream of the third feed roller unit 116. In the cutting mechanism 210, the base material raw film 10A is cut along the width direction, for example, along a dashed line shown in FIG. 24, in this case, along a dashed line Y extending in the width direction of the base material raw film 10A [cutting process]. The base material raw film 10A is provided with alignment marks (not shown) for positioning when cutting by the cutting mechanism 200, and a mark sensor (not shown) provided upstream of the cutting blade (not shown) in the conveyance direction of the base material raw film 10A reads these alignment marks to cut the base material raw film 10A at a fixed pitch. In this manner, the packaging bag 10 is manufactured as a product.

[0097] 21 and 22(C) and (D), as another example of the intermediate part temporary fixing welding mechanism 136, the first welding mechanism 132 includes another intermediate part temporary fixing welding mechanism 138. In this intermediate part temporary fixing welding mechanism 138, in particular, the welding prevention member 172 is formed to have a size within the range surrounded by the two-dot chain line β in FIG. The front member raw film 76, the back member raw film 78, and the support member 16 are sandwiched between the inner surface 30b of one of the folded pieces 30 of the support member raw film 90 (the surface that becomes the outer surface 30a of one of the folded pieces 30 of the support member 16) and the inner surface 32b of the other folded piece 32 of the support member raw film 90 (the surface that becomes the outer surface 32a of the other folded piece 32 of the support member 16), but the welding prevention member 172 is not interposed in the middle of the width direction of the support member raw film 90. The welding mechanism involves partially welding the widthwise middle portion of the outer surface 30a of one of the folded pieces 30 of the support member raw film 90, which has been folded in half, to the inner surface of the front member raw film 76 (the surface that will become the inner surface 26a of the front member 26), with a gap in the longitudinal direction of the raw film 90, and partially welding the widthwise middle portion of the outer surface 32a of the other folded piece 32 of the support member raw film 90, which has been folded in half, to the inner surface of the back member raw film 78 (the surface that will become the inner surface 28b of the back member 28), thereby temporarily fastening them together [other middle portion temporary fastening welding process]. In this end temporary fixing and welding mechanism 138, a welding prevention member 172 is sandwiched between the front member raw film 76 and the back member raw film 78, particularly in the area surrounded by the dashed line β in Fig. 18. As shown in the area surrounded by the dashed line β in Fig. 18, the welding prevention member 172 has a widthwise length that is spaced a certain distance from one end of the support member raw film 90 in the width direction on the side facing the cutout portion 22 of the support member raw film 90 toward the cutout portion 22. In this case,

[0098] Therefore, similar to the above-mentioned intermediate temporary fixing welding mechanism 136, the front member 26, the support member 16, and the back member 28 are fixed to one end edge of the support member 16 in the vertical direction and at the center in the left-right direction, thereby forming fixed ends 24F, 24B, and further, the front member 26, the support member 16, and the back member 28 are fixed to one end edge and the other end edge of the support member 16 in the vertical direction and at the center in the up-down direction, thereby forming intermediate temporary fixing portions 53LP and 53RP. In this end temporary fixing and welding mechanism 138, a welding prevention member 172 is sandwiched between the front member raw film 76 and the back member raw film 78, for example, in the area surrounded by the dotted line β in Figure 18, so that, as shown in Figure 22 (D), one end side in the width direction opposite the cutout portion 22 of the support member raw film 90 has a certain width, and in the area where the welding prevention member 172 is not interposed, the inner surfaces of the support member raw film 90 are not welded together, and a fixed end 24 (24F, 24B) is formed. On the other hand, in the range where the anti-welding member 172 is interposed, particularly at one end edge and the other end edge of the support member 16 in the left-right direction and at the center in the up-down direction, as shown in (E) of Figure 22, the inner surface 26b of the front member 26, the outer surface 30a of one bent piece 30 of the support member 16, the outer surface 32a of the other bent piece 32 of the support member 16, and the inner surface 28b of the back member 28 are fixed together to form intermediate temporary fastening portions 53LP and 53RP.

[0099] Figure 25 is a diagram for explaining an example of the storage direction of contents (products, etc.) stored in another packaging bag (stand-up pouch type packaging bag) according to the present invention, where Figure 25(A) is a plan view illustrating an example of the state of the packaging bag (stand-up pouch type packaging bag) before the contents are stored, and Figure 25(B) is a plan view illustrating an example of the state of the packaging bag (stand-up pouch type packaging bag) after the contents have been stored. In this packaging bag 10, the folding direction of the folding portion 18 of the support member 16 is a valley fold facing upward, so that a rod-shaped item (such as a product) C is stored from the upper end side of the bag body 14 toward the fold line 20 on the valley fold side, and after being inserted into the insertion hole 22A formed by widening the cutout portion 22, the item C is stored and supported in an upright state within the storage portion 12. Thereafter, the upper edge of the bag body 14 on the openable portion 15 side is fixed by the insertion-side sealing portion 58, as shown in Figures 10 and 11, for example.

[0100] Figure 26 is a diagram for explaining an example of the storage direction of contents (products, etc.) stored in yet another packaging bag (stand-up pouch type packaging bag with hanging holes) according to the present invention, where Figure 26(A) is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag with hanging holes) before the contents are stored, and Figure 26(B) is a plan view diagram showing an example of the state of the packaging bag (stand-up pouch type packaging bag with hanging holes) after the contents have been stored. This packaging bag 10 differs from the packaging bag 10 shown in Figure 25 in that a hanging hole 34 is formed at the fixed end 24 (24F, 24B), but the method of inserting the rod-shaped contents C into the bag body 14 is the same.

[0101] Figure 27 is a plan view illustrating an example of a process for welding raw material in the longitudinal direction in the welding process when manufacturing a flat-bag type packaging bag using the manufacturing apparatus of the present invention shown in Figures 15 to 20, and Figure 28 is a cross-sectional diagram showing a modified example (another example) of Figure 28(A) along line FF in Figure 27, Figure 28(B) along line GG in Figure 27, Figure 28(C) is a cross-sectional diagram showing a modified example (another example) of Figure 28(A), and Figure 28(D) is a cross-sectional diagram showing a modified example (another example) of Figure 28(B). Moreover, Fig. 29 is a schematic plan view of a main portion showing an example of a raw web width direction welding step in the welding process when a flat-bag type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in Figs. 15 to 20. Fig. 30 is a schematic perspective view of a main portion showing an example of a raw web length direction welding step in the welding process when a flat-bag type packaging bag is manufactured using the manufacturing apparatus according to the present invention shown in Figs. 15 to 20. Note that Figs. 27 to 30 also serve as views showing an example of a manufacturing process for packaging bag 10 according to Example 1 already described with reference to Figs. 1 to 6. When the packaging bag 10 (flat bag) according to [Example 1] is manufactured by the manufacturing apparatus 10ME, in particular, only the folding mechanism 94 for the bottom member raw film 86 (bottom member 37A) and the notching mechanism 98 for forming punch holes such as the hanging holes 34 in the bottom member raw film 86 (bottom member 37A) are not operated, and the other body material film cutting mechanism 70 and introduction mechanisms 106, 107 are not operated. The mechanisms such as the welding mechanism 120, the first welding mechanism 132, the end temporary fixing welding mechanism 134, the middle temporary fixing welding mechanism 136, the other middle temporary fixing welding mechanism 138, the original web width direction welding mechanism 140, the second welding mechanism 142, the first cooling mechanism 150, the second cooling mechanism 160, the welding prevention member introduction mechanism 170, the hanging hole forming machine 180, the notch forming machine 190, the slitting mechanism 200 and the cutting mechanism 200 have the same configurations, functions and effects as those of the manufacturing apparatus 10ME described above.

[0102] Figure 31 is a schematic plan view of a main portion showing another example of the process of welding raw webs in the length direction in the welding process when manufacturing a flat-bag type packaging bag using the manufacturing apparatus according to the present invention shown in Figures 15 to 20. Also, Figure 32 is a schematic perspective view of a main portion showing yet another example of the process of welding raw webs in the length direction in the welding process when manufacturing a flat-bag type packaging bag using the manufacturing apparatus according to the present invention shown in Figures 15 to 20. 21 to 24 and 27 to 30 in the welding mechanism 120 when manufacturing the packaging bag 10 according to the present invention. LongThe fixed end 24 (24F, 24B) formed by the directional welding mechanism 130 is such that, when the bag body 14 is viewed in the main surface direction (viewed from the front), the other vertical edge of the support member 16 opposite the folded portion 18 of the support member 16 is aligned with one vertical edge of the bag body 14, and one central point of the other vertical edge of the support member 16 and one vertical edge of the bag body 14 is fixed, forming the fixed end 24 (24F, 24B) between the bag body 14 and the support member 16. 31 is formed as a plurality of fixed ends 25P that are rectangular in front view and spaced apart in the longitudinal direction at one edge in the vertical direction of bag body 14, while the fixed end shown in Fig. 32 is formed as a linear fixed end 25L that is formed as a linear fixed end 25L that is provided in the longitudinal direction at one edge in the vertical direction of bag body 14. In this case, fixed end 24 can be temporarily fixed to a smaller area than fixed end 25P and fixed end 25L, and the fixed area is reduced, minimizing the impact on each raw film 76, 78, 90 and on production.

[0103] Figure 33 is a diagram for explaining an example of the direction in which contents (products, etc.) are stored depending on the state and shape of the contents stored in the packaging bag (flat bag type packaging bag) of the present invention, where Figure 33(A) is a plan view diagram showing an example of the state of the packaging bag (flat bag type packaging bag) before the contents are stored, and Figure 33(B) is a plan view diagram showing an example of the state of the packaging bag (flat bag type packaging bag) after the contents have been stored. In this packaging bag 10, the folding direction of the folding portion 18 of the support member 16 is a valley fold facing downward, so that the product W1 (e.g., nail polish) is stored from the lower end side of the bag body 14 toward the fold line 20 on the valley fold side, and after being inserted into the insertion hole 22A which is formed by widening the cutout portion 22, the stored item C is stored and supported in an upright state within the storage section 12. The shape of this product W1 (e.g., nail polish) has a rod-shaped portion wa that is smaller than the diameter of the insertion hole 22A, and a main body portion wb that is larger than the diameter of the insertion hole 22A and wider than the rod-shaped portion. Furthermore, the product W1 (e.g., nail polish) is usually stored in the bag main body 14 with the main body portion wb facing downward. Therefore, when storing the product W1 in the bag body 14, the rod-shaped portion wa of the product W1, which is smaller than the diameter of the insertion hole 22A, is stored from the lower end side of the bag body 14 toward the fold line 20 on the valley fold side. Thereafter, the lower edge of the bag body 14 on the side of the openable portion 15 is fixed by the insertion side sealing portion 56, as shown in FIG. 33(B).

[0104] Figure 34 is a diagram for explaining an example of the direction in which contents (products, etc.) are stored depending on the state and shape of the contents stored in the packaging bag (flat bag type packaging bag) of the present invention, where Figure 32(A) is a plan view diagram showing an example of the state of the packaging bag (flat bag type packaging bag) before the contents are stored, and Figure 32(B) is a plan view diagram showing an example of the state of the packaging bag (flat bag type packaging bag) after the contents have been stored. This packaging bag 10 differs from the packaging bag 10 shown in Fig. 33 in particular in the state and shape of the contents (product, etc.) stored in the packaging bag 10. That is, the packaging bag 10 shown in Fig. 34 stores another product W2 (e.g., a makeup brush). The shape of this product W2 (e.g., a makeup brush), like the above-mentioned product W1 (e.g., nail polish), has a rod-shaped portion wa that is smaller than the diameter of the insertion hole 22A and a main body portion wb that is larger than the diameter of the insertion hole 22A and wider than the rod-shaped portion. However, this product W2 (e.g., a makeup brush) is usually stored in the bag main body 14 with its main body portion wb facing upward. Therefore, when storing the product W2 in the bag body 14, the rod-shaped portion wa of the product W1, which is smaller than the diameter of the insertion hole 22A, is stored from the upper end side of the bag body 14 toward the fold line 20 on the valley fold side. Thereafter, the lower edge of the bag body 14 on the side of the openable portion 15 is fixed by the insertion side sealing portion 56, as shown in FIG. 33(B).

[0105] Figure 35(A) is a plan view of an example of an end temporary seal portion formed by an end temporary seal welding process using the packaging bag manufacturing apparatus of the present invention, and an intermediate temporary seal portion formed by an intermediate temporary seal welding process, and Figure 35(B) is a plan view of an example of another example of these. Figure 35(A) has a structure similar to that of the packaging bag 10 shown in Figures 7 to 11, and the packaging bag 10 shown in Figure 35(B) differs from the packaging bag 10 shown in Figure 35(A) particularly in the shape of the fixed end 24 (24F, 24B) and the intermediate temporary fastening portions 53LP, 53RP. That is, in the packaging bag 10 shown in Figure 35(B), the fixed end 24 (24F, 24B) shown in Figure 35(A) extends downward from the upper seal portion 50 and protrudes, and the intermediate temporary fastening portions 53LP, 53RP shown in Figure 35(A) extend inward from the side seal portions 52L, 52R and protrude.

[0106] Figure 36 is an explanatory diagram showing an example of an insertion hole arranged by the packaging bag manufacturing apparatus of the present invention, where Figures 36(A), 36(C), and 36(E) are oblique diagrams showing the state of the insertion hole when the support member is folded in half, and Figures 36(B), 36(D), and 36(F) are plan diagrams showing the state of the insertion hole when the support member is expanded. As described above, one example of the cutout portion 23 provided by the manufacturing apparatus for packaging bags according to the present invention is formed in a horizontally elongated rectangular shape in a plan view. In this case, when the cutout portion 23 is accurately formed in a horizontally elongated rectangular shape in a plan view across the folded portion 18 of the support member 16 as shown in Fig. 36(A), the support member 16 expands (spreads open) in the depth direction of the bag body 14 (a direction perpendicular to the main surfaces of the front member 26 and the back member 28) as shown in Fig. 36(B), and the cutout portion 22 of the support member 16 expands in the same direction to form the predetermined horizontally elongated rectangular insertion hole 22A in a plan view, and the contents C can be inserted into the insertion hole 22A without any problems.

[0107] Furthermore, for example, as shown in Fig. 36(C), the notch 22 is misaligned toward the crease line 20 of the bent portion 18 of the support member 16, and the notch 22 is not accurately formed into a horizontally elongated rectangular shape in a plan view, resulting in a flat horizontally elongated rectangular insertion hole 22A when the support member 16 is expanded, as shown in Fig. 36(D). In this case, although the horizontal width L of the insertion hole 22A is formed to be the same as the width L of the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B) in a plan view, the vertical width of the insertion hole 22A is shorter than that of the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B). Therefore, the content C that could be inserted into the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B) cannot be inserted into the insertion hole 22.

[0108] Furthermore, for example, as shown in Fig. 36(C), the notch 22 may be misaligned toward the end face of the bent portion 18 of the support member 16, and the notch 22 may not be accurately formed into a horizontally elongated rectangular shape in a plan view, resulting in a vertically elongated rectangular insertion hole 22A when the support member 16 is expanded, as shown in Fig. 36(E). In this case, the vertical width of the insertion hole 22A is greater than that of the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B) in a plan view, but the horizontal width L of the insertion hole 22A is formed to be the same as the width L of the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B). Therefore, the content C that could be inserted into the horizontally elongated rectangular insertion hole 22 shown in Fig. 36(B) in a plan view can be inserted into the insertion hole 22 without any problems.

[0109] Figure 37 is an explanatory diagram showing another example of an insertion hole arranged by the packaging bag manufacturing apparatus of the present invention, where Figures 37(A), 37(C) and 37(E) are oblique diagrams showing the state of the insertion hole when the support member is folded in half, and Figures 37(B), 37(D) and 37(F) are plan diagrams showing the state of the insertion hole when the support member is expanded. The other cutout portion 23 formed by the cutout mechanism 102 of the support member of the packaging bag manufacturing apparatus of the present invention is formed in a semicircular shape in a planar view. In this case, when it is formed exactly in a semicircular shape in a planar view across the folding portion 18 of the support member 16 as shown in (A) of Figure 37, the support member 16 expands (spreads out) in the depth direction of the bag body 14 (a direction perpendicular to the main surfaces of the front member 26 and the back member 28) as shown in (B) of Figure 37, and the other cutout portion 23 of the support member 16 expands in the same direction to take the form of, for example, a circular insertion hole 23A in a planar view.

[0110] However, as shown in Fig. 37(C), if the notch portion 23 is misaligned toward the crease line 20 of the bent portion 18 of the support member 16, the notch portion 23 will not be accurately formed in a semicircular shape in a plan view, and will instead form an insertion hole 23A that is flattened and elliptical when the support member 16 is expanded, as shown in Fig. 37(D), and the diameter (horizontal width and vertical width) L of the insertion hole 23A will be shorter than that of the circular insertion hole 23 shown in Fig. 37(B) in a plan view. This poses a problem in that the contents C that could have been inserted into the circular insertion hole 23 shown in Fig. 37(B) in a plan view cannot be inserted into the insertion hole 23. Furthermore, as shown in FIG. 37(E), if the notch 23 is misaligned toward the end face opposite the crease line 20 of the bent portion 18 of the support member 16, the notch 23 will not be accurately formed in a semicircular shape in plan view, and when the support member 16 is unfolded, the notch 23 will have an insertion hole 23A that is shaped like an eight in plan view, resulting in the formation of protrusions 23P, protrusions 23P that protrude inward of the insertion hole 23, as shown in FIG. 37(F). These two protrusions 23P, protrusions 23P are formed facing each other with a gap between them on the crease line 20 of the bent portion 18. In this case, the width between the protrusions 23P, protrusions 23P is shorter than when the insertion hole 23 is circular in plan view. This can cause problems, such as the contents C getting caught in the insertion hole 23 or the contents C being unable to be inserted.

[0111] [Figure 38] The shape of the notch of the support member and the guide spatula applied to the packaging bag according to the present invention. 38(A) is a plan view of the essential parts when the cutout portion of the support member is semicircular in plan view and the tip shape of the guide spatula is semicircular, and FIG. 38(B) is a plan view of the essential parts when the cutout portion of the support member is semicircular and the tip shape of the guide spatula is a horizontally elongated rectangular shape. 38(A), when the shape of the notch 22 of the support member 16 used in the packaging bag 10 according to the present invention is, for example, semicircular in plan view and the tip shapes of the guide spatulas 104a, 104b, 108a, 108b, 108c, and 108d are also semicircular in plan view, as shown in Fig. 38(A), when the support member raw film 90 is conveyed from upstream to downstream and passes the tip portions of the guide spatulas 108a and 108b, the tip portions of the guide spatulas 108a and 108b are disposed between the inner surfaces of the support member raw film 90 and are in contact with the folded portion 18 of the support member raw film 90, the tip portions of the guide spatulas 108a and 108b enter the notch 22. In this case, the tip portions protrude outward from the folding line 20 of the folded portion 18 of the support member raw film 90. From this state, when the tip ends of the guide spatulas 108a, 108b pass through the notch portion 22 and are transported downstream, a load is applied to the support member raw film 90 at the notch end edge of the notch portion 22, which may damage the notch end edge of the notch portion 22.

[0112] 38(B), when the tip shapes of the guide spatulas 104a, 104b, 108a, 108b, 108c, and 108d are formed into horizontally elongated rectangular shapes in a plan view, when the support member original film 90 is conveyed from the upstream side to the downstream side and passes the tip portions of the guide spatulas 108a and 108b, the tip portions of the guide spatulas 108a and 108b are prevented from entering the notches 22. Therefore, there is no risk of a load being applied to the support member original film 90 at the notch end edges of the notches 22, which could damage the notch end edges of the notches 22.

[0113] [Figure 39] The shape of the notch of the support member and the guide spatula applied to the packaging bag according to the present invention. 39(A) is a plan view of the essential parts when the cutout portion of the support member is in a horizontally elongated rectangular shape when viewed from above and the tip shape of the guide spatula is in a semicircular shape, and FIG. 39(B) is a plan view of the essential parts when the cutout portion of the support member is in a horizontally elongated rectangular shape and the tip shape of the guide spatula is, for example, in a horizontally elongated rectangular shape when viewed from above and the semicircular shape is, for example, in a horizontally elongated rectangular shape. If the shape of the other notch 23 of the support member 16 used in the packaging bag 10 according to the present invention is, for example, a horizontally elongated rectangle in plan view and the tip of the other guide spatula 109 is semicircular in plan view, as shown in Figure 39 (A), the guide spatula 109 that is disposed between the inner surfaces of the support member raw film 90 and abuts against the folded portion 18 of the support member raw film 90 will have the tip of the guide spatula 109 enter the notch 23 when the support member raw film 90 is transported from upstream to downstream and passes the tip of the guide spatula 109. In this case, the tip will protrude outward from the folding line 20 of the folded portion 18 of the support member raw film 90. From this state, when the tip of the guide spatula 109 passes through the notch portion 23 and is transported downstream, a load is applied to the support member raw film 90 at the notch end edge of the notch portion 23, which may damage the notch end edge of the notch portion 23.

[0114] 39B, when the tip of the guide spatula 109 is formed into a horizontally elongated rectangular shape in a plan view, the tip of the guide spatula 109 is prevented from entering the notch 23 when the support member original film 90 is transported from the upstream side to the downstream side and passes the tip of the guide spatula 109. Therefore, there is no risk of a load being applied to the support member original film 90 at the notch end edge of the notch 23, which could damage the notch end edge of the notch 23.

[0115] The packaging bag 10 shown in [Example 1] and [Example 2] according to the present invention is formed by a manufacturing method using the manufacturing apparatus 10ME described above, and therefore has the following various functions and effects. In other words, this packaging bag 10 has a configuration in which the support member 16, through which the end faces are aligned, is not positioned at approximately the center in the vertical direction of the front member 26 and the back member 28, but is positioned at one end in the vertical direction at the upper or lower end side of the front member 26 and the back member 28, so that the fixed end 24 (24F, 24B) of the support member 16 becomes the end of the bag body 14.Therefore, the marks HS of the fixed part (marks of the heat-sealed part) described in [Problem to be solved by the invention] and the line on the other end side in the vertical direction of the support member 16 do not overlap the contents C and detract from the appearance.

[0116] Therefore, in conventional packaging bags 1, in order to make the fixed portion (the mark of the heat seal portion) HS less noticeable and camouflage it, a design element DS such as letters, figures, colors, patterns, etc. was deliberately added to the surface side of the fixed portion (the mark of the heat seal portion) HS, as shown in Figures 44(A) and 44(B).However, this packaging bag 10 can solve the problem of such conventional packaging bags 1, namely, the problem that the freedom of design intended to appeal to the value of the product is limited.

[0117] Furthermore, misalignment can be prevented when introducing the support member 16 folded in half between the front member 26 and the back member 28, enabling stable production of packaging bags 10. In this case, as shown in Figures 15, 21 to 24, 27 to 30, etc., one end side in the width direction of the support member raw film 90 is fixed not to approximately the center in the width direction of the front member raw film 76 and the back member raw film 78 but to the fixed ends 24 (24F, 24B) aligned with one end side in the width direction of the front member raw film 76 and the back member raw film 78, making it easier to adjust the conveying position of the support member raw film 90. In this case, by transporting the support member raw film 90 along the edge faces of the front member raw film 76 and the back member raw film 78, the lines of the edge faces of the support member raw film 90 and the front member raw film 76, and the support member raw film 90 and the back member raw film 78 can be aligned during manufacturing, making it easy to adjust the positional accuracy of the support member raw film 90 in the raw film width direction.

[0118] On the other hand, since the support member raw film 90 is folded long in the width direction by aligning it with the end surface, there is a risk that the support member raw film 90 may easily shift in the width direction in the conveying direction when the support member raw film 90 sandwiched between the front member raw film 76 and the back member raw film 78 is conveyed. However, in the manufacturing method of this packaging bag 10, as shown in Figures 1, 7, 25, 26, 33, 34, and 42, for example, before forming the side seal portions 52L and 52R, intermediate temporary fastening portions 53LP and 53RP are formed, and the support member raw film 90 is temporarily fixed, thereby stabilizing the flow of the support member raw film 90 in the conveying direction.

[0119] Furthermore, by forming fixed ends 24 (24F, 24B), in this case, as shown in Figures 22 and 28, for example, a welding prevention member 172 is sandwiched between the inner surfaces 30b, 32b of the folded pieces 30, 32 of the support member raw film 90 to prevent the inner surfaces of the support member films from welding to each other, and one end side of the widthwise direction of the outer surfaces 30a, 32a of the folded pieces 30, 32 of the support member raw film 90 is welded to one end side of the widthwise direction of the inner surfaces 26b, 28b of the front member raw film 76 and the back member raw film 78, respectively, so that the number of films on the openable portion 15 side is reduced from 4 to 2 / 2, making it easier to insert the contents C from the openable portion 15 into the insertion hole 22A of the support member 16.

[0120] Furthermore, in the case of standing pouch type packaging bags 10, particularly in a manufacturing method in which the end faces are aligned and conveyed, if there is a hanging hole, for example, aligning the end faces results in four sheets of film on the openable portion 15 side, which results in four sheets of punch waste, which may cause poor suction, but by positioning fixed ends 24 (24F, 24B) in a position where at least a portion of them overlaps with hanging hole 34, punch waste can be fixed two sheets at a time, preventing poor suction of punch waste. In other words, the number of punch waste sheets that would otherwise be four is reduced to two sheets, preventing poor suction of punch waste. Furthermore, in this packaging bag 10, the anti-weld member 172 prevents the inner surfaces of the support member raw film 90 from welding to each other and the support member raw film 90 to the front member raw film 76 and the back member raw film 78, but because the films are welded to the anti-weld member 172 once and then peeled off, the stability of the bag production decreases and there is a possibility that roughness will occur in the raw films 76, 78, and 90. Therefore, in the manufacturing method of this packaging bag 10, the seal area can be reduced and damage can be mitigated by using fixed end 24 (24F, 24B) as a single point seal rather than fixed end 25P as multiple point seals or fixed end 25L as a linear seal as shown in Figure 32, for example.

[0121] [Fig. 40] An example of the manner in which contents (products, etc.) are stored in the packaging bag according to the present invention. 1 is a front view illustrating an improvement in storage efficiency when storing the contents (products, etc.). FIG. In this packaging bag 10, fixed ends 24 (24F, 24B) are formed, Because the end face of the support member 16 is reachable from the openable portion 15 when inserting the contents C into the storage section 12, the fixed ends 24 (24F, 24B) can be designed with a minimum bonding range, preventing a decrease in bag-making efficiency due to temporary bonding (tentative bonding) to the anti-weld member 172 and preventing deterioration of the films of the support member 16, front member 26, and back member 28. In this case, the main function of the fixed ends 24 (24F, 24B) is to bond the front member 26 to the support member 16, and the back member 28 to the support member 16, respectively, when inserting the contents C into the storage section 12, making it easier to open the openable portion 15. In contrast, if a conventional technology (conventional product) were to have a point seal portion P as a temporary edge seal portion, for example, as shown in Figure 41, there was a risk that the contents C would be inserted incorrectly between the front member and the support member 7, or between the back member and the support member 7. Furthermore, with this conventional packaging bag, the ends of the support member 7 are difficult to reach when inserting the contents C into the storage compartment, and the entire support member 7 had to be fastened so that the fastened portion would stop the contents C even if the target was off when inserting them. In this case, it was necessary to fasten the outer surfaces of one and the other folded pieces of the support member 7 to the inner surfaces of the front member and the back member over a wide area, and the area that was temporarily fastened to the anti-weld member 172 and then peeled off was also large, which could reduce the efficiency and precision of manufacturing the packaging bag and could lead to deterioration of each film.

[0122] [Figure 42] A packaging bag manufactured by a manufacturing method using the packaging bag manufacturing device according to the present invention. 1 is a perspective view illustrating an example of a state in which contents (products, etc.) are packaged in a container. FIG. According to the packaging bag 10 manufactured by the manufacturing method using the packaging bag manufacturing apparatus of the present invention, as shown in FIG. 42, it is possible to provide a packaging bag 10 that does not interfere with the display location of visual elements that appeal to product information and product value, does not impair the aesthetic appearance of the product, solves the problem of limited design freedom regarding the packaging form, and makes it easy to accurately position and manage the support member folded in half. [Explanation of symbols]

[0123] 10 packaging bags 12 Storage area 14 Bag body 15 Openable part (opening) 16 Support member 18 Bending portion of support member 20 Crease line of the bending part of the support member 22 Notch 22A Insertion hole 23A Other insertion holes 23 Other notches 23P convex part 24 Fixed end (temporary seal part at end) 24F Fixed end on the front component side [Fixed end temporary seal part (FRONT side)] 24B Fixed end on the back side [Fixed end temporary seal part (BACK side)] 25P Other fixed end 25L Further fixed end 26 Front member 26a Outer surface of front member (OUTSIDE) 26b Inside of front member 28 Back member 28a Outer surface of rear member (OUTSIDE) 28b Inside of rear member 30 One bent piece of the support member 30a Outer surface (OUTSIDE) of one bent piece of the support member 30b Inner surface of one bent piece of the support member (INSIDE) 32 The other bent piece of the support member 32a Outer surface (OUTSIDE) of the other bent piece of the support member 32b Inner surface of the other bent piece of the support member (INSIDE) 34 Hanging hole 34F Front side hole (FRONT side) 34B Wave side hole (BACK side) 36 gusset 36A Bottom member (bottom gusset member) 37A Top surface of bottom member 38 Bent portion of bottom member 40 Crease line of the bent part of the bottom member 42 One bent piece of the bottom member 42a Outer surface of one bent piece of the bottom member 42b Inner surface of one bent piece of the bottom member 44 Other bent piece of bottom member 44a Outer surface of one bent piece of the bottom member 44b Inner surface of one bent piece of the bottom member 46L(right), 46R(left) Notch 48L(right),48R(left) Fusion part 50 Upper seal part 52L(right), 52R(left) Side seal part 53LP (right point), 53RP (left point) Intermediate temporary fastening part [Intermediate temporary fastening seal part] 53OE Other intermediate temporary fastening parts [intermediate temporary fastening seal parts] 54 Lower seal part 56,58 Insertion side sealing part 10ME (Manufacturing Equipment) 60 Body material raw film 62 Body material raw film holding roller 64a, 64b, 64c, 64d Guide rollers 66a, 66b Feed roller 70 Body film cutting mechanism 72a, 72b, 72c, 74a, 74b, 74c, 74d Guide rollers 76 Front component raw film 78 Back material raw film 80,82 Dance Roller Club 84a, 84b Guide rollers 86 Bottom material film 88 Bottom member raw film holding roller 90 Supporting member raw film 91 Support member raw film holding roller 92a, 92b, 92c, 92d, 92e Guide rollers 94 Bottom part folding mechanism 96 Triangular plate member for folding the bottom member in half 98 Bottom member notch mechanism 99a, 99b, 99c, 99d, 99e Guide rollers 100 Support member folding mechanism 101 Triangular plate member for folding the support member in half 102 Notch mechanism of support member 104a, 104b Guide spatula 106 Introduction mechanism 107 Introduction mechanism 108a, 108b, 108c, 108d Guide Spatula 109 Other Guide Spatulas 110 Transport Conveyor 112 first feed roller section 114 Second feed roller section 116 Third feed roller section 120 Welding mechanism 130 Raw material longitudinal welding mechanism 132 First welding mechanism 134 End temporary fixing welding mechanism 136 Intermediate part temporary welding mechanism 137 Heat seal bar 138 Other intermediate temporary welding mechanisms 139 Heat Seal Bar 140 Fabric width direction welding mechanism 142 Second welding mechanism 150 First cooling mechanism 152,154 Cooler 160 Second Cooling Mechanism 170 Welding prevention material introduction mechanism 172 Welding prevention material 173 Other welding prevention materials 174a, 174b Welding prevention member support 176a,176b Support column 178a, 178b Retaining shaft 180 Hanging hole forming mechanism 190 Notch formation mechanism 200 Slit mechanism 210 Cutting mechanism C. Bar-shaped contents Ct Tip of rod-shaped contents Cb Body of rod-shaped contents D O Depth of the bottom part D1, D2: Depth of the support member W1 product W2 Other Products wa Rod-shaped part wb Body parts L Diameter of insertion hole (width and height) 1. Packaging bags according to the prior art 3 Contents (products, etc.) 5. Visual element placement 7 Supporting members and members equivalent to the core sheet 9 Notch P point seal part HS Linear adhesive part (heat seal mark) DS design section

Claims

1. A bag body having a storage section whose upper end side or lower end side is formed to be openable and capable of storing a longitudinal content; a support member that is folded in half and disposed inside the bag body, and that cooperates with the bag body to support the contents in the storage section; The support member is a folded portion that is folded in two at one edge portion in the vertical direction of the support member, and a single notch portion that straddles a crease line of the folded portion at the folded portion; When the bag body is opened, the cutout portion expands together with the folded portion to form an insertion hole, and one end side of the content in the length direction can be inserted into the insertion hole. The support member is When the bag body is viewed in the main surface direction (viewed from the front), the other end edge portion in the vertical direction of the support member on the opposite side to the folded portion is aligned with one end edge portion in the vertical direction of the bag body, A packaging bag characterized in that at least a portion of the other vertical edge of the support member and one vertical edge of the bag body are fixed to form fixed ends of the bag body and the support member.

2. The bag body is a front member, and a rear member formed to have substantially the same shape and size as the front member and disposed opposite the front member; In the bag body and the support member, one end edge and the other end edge in the left-right direction of one outer surface of the support member and a middle portion in the up-down direction thereof are partially fixed to the inner surface of the front member, 2. The packaging bag according to claim 1, wherein one edge and the other edge in the left-right direction of the other outer surface of the support member and a middle portion in the up-down direction thereof are partially fixed to the inner surface of the back member.

3. In the bag body and the support member, At least a part of the other edge portion in the vertical direction of the support member on one outer surface of the support member and opposite to the bent portion is fixed to one edge portion in the vertical direction of the inner surface of the front member, At least a part of the other vertical edge portion of the support member on the other outer surface of the support member, opposite the bent portion, and one vertical edge portion of the inner surface of the back member are fixed to each other; one end edge and the other end edge in the left-right direction of one outer surface of the support member are fixed to at least a part of one end edge and the other end edge in the left-right direction of the inner surface of the front member, The packaging bag according to claim 2, characterized in that one end edge and the other end edge in the left-right direction of the other outer surface of the support member are fixed to at least a portion of one end edge and the other end edge in the left-right direction of the inner surface of the back member.

4. The bag body includes a gusset portion, The gusset portion is a bottom surface member that is folded in half and disposed at the bottom of the bag body, one outer surface of the folded portion facing the inner surface of the front surface member, and the other outer surface of the folded portion facing the inner surface of the back surface member, The bottom member is one edge portion and the other edge portion in the left-right direction of one outer surface of the bottom member and one edge portion and the other edge portion in the left-right direction of the inner surface of the front member are fixed to each other, one edge portion and the other edge portion in the left-right direction of the other outer surface of the bottom member and one edge portion and the other edge portion in the left-right direction of the inner surface of the back member are fixed to each other, a lower edge portion in the vertical direction of one outer surface of the bottom surface member and a lower side of an inner surface of the front surface member are fixed to each other; 4. The packaging bag according to claim 2, wherein a lower edge portion in the vertical direction of the other outer surface of the bottom member is fixed to a lower side of the inner surface of the back member.

5. A strip-shaped front component raw film that will become the front component; a back member raw film disposed opposite the front member raw film and serving as a back member; and A method for manufacturing a packaging bag including a support member raw film that is folded in half and disposed between the front member raw film and the back member raw film, and serves as a support member, comprising: a folding step of folding the support member raw film in half so as to have a folding portion at one end edge in the width direction of the support member raw film and extending in the longitudinal direction thereof; a notch process of arranging notches at predetermined intervals in the longitudinal direction of the bent portion so as to straddle the crease line of the bent portion; an introduction step of aligning the other end edge portion in the width direction of the support member raw film on the opposite side to the folded portion with one end edge portion in the width direction of the front member raw film and the back member raw film, and introducing the support member raw film between the front member raw film and the back member raw film; A method for manufacturing a packaging bag, characterized by including a welding process in which the support member raw film introduced between the front member raw film and the back member raw film by the introduction process, the front member raw film, and the back member raw film are welded together so that the folded portion of the support member raw film can be freely expanded.

6. The welding step includes: a longitudinal welding step of welding one end and the other end of the front member raw film, the back member raw film, and the support member raw film in the width direction along the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film; 6. The method for manufacturing a packaging bag according to claim 5, further comprising a width direction welding step of welding the front member raw film, the back member raw film and the support member raw film from one end to the other end in the width direction of the front member raw film, the back member raw film and the support member raw film at intervals in the longitudinal direction of the front member raw film, the back member raw film and the support member raw film.

7. The raw web longitudinal welding step includes: A welding prevention member introduction step of introducing the support member raw film between the front member raw film and the back member raw film in a state in which a welding prevention member that prevents welding between the inner sides of the support member raw film folded in half in the folding step is sandwiched between one inner side and the other inner side of the support member raw film; a first welding step of welding one outer side of the support member raw film to the inner side of the front member raw film and welding the other outer side of the support member raw film to the inner side of the back member raw film, with the welding prevention member sandwiched between one inner side and the other inner side of the support member raw film folded in half; The raw web width direction welding step includes: After the first welding step is performed, In a state where the welding prevention member is not sandwiched between one inner side and the other inner side of the support member raw film folded in half, 7. The method for manufacturing a packaging bag according to claim 6, further comprising a second welding step of welding the front member raw film, the back member raw film and the support member raw film from one end to the other end in the width direction of the front member raw film, the back member raw film and the support member raw film at intervals in the longitudinal direction of the front member raw film, the back member raw film and the support member raw film.

8. The first welding step includes: The welding prevention member is sandwiched between one inner side and the other inner side of the folded support member raw film, At intervals in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, When viewed in the width direction of the support member raw film, an end portion in the width direction of the support member raw film on the side facing the notch portion of the support member raw film is provided. An end temporary fixing welding process in which one outer surface of the folded support member raw film and the inner surface of the front member raw film are partially welded together, and the other outer surface of the folded support member raw film and the inner surface of the back member raw film are partially welded together to temporarily fix them together; The welding prevention member is sandwiched between one inner side and the other inner side of the folded support member raw film, 8. The method for manufacturing a packaging bag according to claim 7, further comprising a middle temporary welding step of partially welding one outer surface of the support member raw film to the inner surface of the front member raw film at a middle portion in the width direction of the support member raw film and at a predetermined interval in the longitudinal direction thereof, and partially welding the other outer surface of the support member raw film to the inner surface of the back member raw film.

9. The first welding step includes: The welding prevention member is sandwiched between one inner side and the other inner side of the folded support member raw film, but the welding prevention member is not interposed in the middle part of the width direction of the support member raw film, At intervals in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, 9. The method for manufacturing a packaging bag according to claim 8, further comprising a second intermediate portion temporary welding step of partially welding a widthwise intermediate portion of one outer surface of the folded support member raw film to the inner surface of the front member raw film, and partially welding a widthwise intermediate portion of the other outer surface of the folded support member raw film to the inner surface of the back member raw film.

10. A strip-shaped front component raw film that will become the front component; a back member raw film disposed opposite the front member raw film and serving as a back member; and A packaging bag manufacturing device including a support member raw film that is arranged in a folded state between the front member raw film and the back member raw film and serves as a support member, the device comprising: a folding mechanism that folds the support member raw film in half so that the support member raw film has a folding portion that is provided at one end edge in the width direction of the support member raw film and that extends in the longitudinal direction thereof; a notch mechanism that arranges notches at predetermined intervals in a longitudinal direction of the bent portion so as to straddle a crease line of the bent portion; an introduction mechanism that introduces the other end edge portion of the support member raw film in the width direction opposite to the bent portion between the front member raw film and the back member raw film so as to align with one end edge portion of the front member raw film and the back member raw film in the width direction; A packaging bag manufacturing device characterized by including: the support member raw film introduced between the front member raw film and the back member raw film by the introduction mechanism; and a welding mechanism that welds the front member raw film and the back member raw film together so that the folded portion of the support member raw film can be freely expanded.

11. The welding mechanism includes: a longitudinal welding mechanism for welding one end and the other end of the front member raw film, the back member raw film, and the support member raw film in the width direction along the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film; 11. The packaging bag manufacturing device according to claim 10, further comprising a raw material width direction welding mechanism that welds the front member raw material film, the back member raw material film, and the support member raw material film from one end to the other end in the width direction of the front member raw material film, the back member raw material film, and the support member raw material film at intervals in the longitudinal direction of the front member raw material film, the back member raw material film, and the support member raw material film.

12. The raw web longitudinal welding mechanism includes: a welding prevention member introduction mechanism that introduces the support member raw film between the front member raw film and the back member raw film in a state in which a welding prevention member that prevents welding between the inner sides of the support member raw film folded in half by the folding mechanism is sandwiched between one inner side and the other inner side of the support member raw film; and a first welding mechanism that welds one outer side of the support member raw film to the inner side of the front member raw film and welds the other outer side of the support member raw film to the inner side of the back member raw film in a state in which the weld prevention member is sandwiched between one inner side and the other inner side of the support member raw film folded in half, After performing the first welding, the raw web width direction welding mechanism In a state where the welding prevention member is not sandwiched between one inner side and the other inner side of the support member raw film folded in half, 12. The packaging bag manufacturing device according to claim 11, further comprising a second welding mechanism that welds the front member raw film, the back member raw film, and the support member raw film from one end to the other end in the width direction of the front member raw film, the back member raw film, and the support member raw film at intervals in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film.

13. The first welding mechanism is configured to sandwich the welding prevention member between one inner side and the other inner side of the support member raw film folded in half, At intervals in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, When viewed in the width direction of the support member raw film, an end portion in the width direction of the support member raw film on the side facing the notch portion of the support member raw film is provided. an end temporary fixing welding mechanism that partially welds one outer surface of the folded support member raw film to the inner surface of the front member raw film, and partially welds the other outer surface of the folded support member raw film to the inner surface of the back member raw film; and 13. The packaging bag manufacturing device according to claim 12, further comprising a middle temporary welding mechanism that partially welds one outer surface of the support member raw film to the inner surface of the front member raw film at a middle portion in the width direction of the support member raw film and at a predetermined interval in the longitudinal direction thereof, and partially welds the other outer surface of the support member raw film to the inner surface of the back member raw film to temporarily secure them.

14. The first welding mechanism includes: The welding prevention member is sandwiched between one inner side and the other inner side of the folded support member raw film, but the welding prevention member is not interposed in the middle part of the width direction of the support member raw film, At intervals in the longitudinal direction of the front member raw film, the back member raw film, and the support member raw film, 14. The method for manufacturing a packaging bag according to claim 13, further comprising a second intermediate portion temporary fastening welding mechanism that partially welds a widthwise intermediate portion of one outer surface of the folded support member raw film to the inner surface of the front member raw film, and partially welds a widthwise intermediate portion of the other outer surface of the folded support member raw film to the inner surface of the back member raw film.

Images