Method for manufacturing bag container packaging and device for manufacturing bag container packaging

Abstract

The method for manufacturing a bag container packaging of the present invention uses a first main sheet (110), a second main sheet (120) and a top sheet (130), and includes: a first folding step (P9); a first cutting step (P11), wherein the top sheet, the second sub-region (1220), the first main region (1110) and the first sub-region overlap along a first cutting line (CL1) that exceeds a first boundary line (1130) at the bottom side in the z direction from the overlapping portion of the top sheet and the second sub-region (1220), and the first main region (1110) and the first sub-region overlap along a first cutting line (CL1) that exceeds a first boundary line (1130) at the bottom side in the z direction. The top sheet (1120) is cut; a second folding step (P12); a second cutting step (P14) is performed to cut the top sheet, the first sub-region (1120), the first main region (1110) and the second main region (1210) along a second cutting line (CL2) which crosses the first outline line (OL1) formed in the first cutting step and exceeds the second boundary line (1230) at the bottom side of the overlapped portion of the top sheet and the first sub-region (1120) in the z direction, thereby forming a top sheet (13) from the top sheet. This structure increases the degree of freedom of the shape of the top sheet.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a bag container package and an apparatus for manufacturing a bag container package. Background Art

[0002] Bag containers are widely used as containers for storing contents such as various detergents, beverages, and foods. In general, bag containers are formed using a sheet made of a synthetic resin that is flexible and has good softness. Patent document 1 discloses an example of a method for manufacturing a bag container package used in an existing bag container. In the manufacturing method disclosed in the document, a top side sheet is joined to a pair of main body sheets. The pair of main body sheets and the top side sheet are respectively long strips of sheets, and are intended to continuously manufacture a plurality of bag container packages. In a state where a pair of main body sheets are oriented along a vertical direction and the top side sheet is oriented along a horizontal direction, a first cutting process is performed to partially cut the top side sheet. In this first cutting process, the approximate shape of the top side sheet in the bag container package is formed, but adjacent top side sheets are still connected to each other. Next, in a state where a pair of main body sheets and the top side sheet are oriented along a vertical direction, a second cutting process is performed. By the second cutting step, the pair of main body sheets and the top sheet are cut in the sheet conveying direction, and a plurality of bag container packages are sequentially manufactured.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2014-193566 Summary of the invention

[0006] Problems to be solved by the invention

[0007] The two ends of the top sheet of the conventional bag container packaging are the parts that are cut in the second cutting step. In order to cut off a pair of main body sheets and top sheet materials connected in the conveying direction, the cutting line in the second cutting step is a straight line extending in the vertical direction. Therefore, there is a problem that the shapes of the two ends of the top sheet are limited.

[0008] The present invention has been made based on the above circumstances, and an object of the present invention is to provide a method and an apparatus for manufacturing a bag container package that can further improve the degree of freedom of the shape of the top side sheet.

[0009] Technical solutions to solve problems

[0010] A method for manufacturing a bag container packaging provided by the first aspect of the present invention uses a first main sheet and a second main sheet that are opposite to each other in a first direction and a top side sheet that is arranged on the top sides of the first main sheet and the second main sheet in a second direction orthogonal to the first direction, and performs the following steps: a sheet joining step of joining a first main area of ​​the first main sheet and a second main area of ​​the second main sheet at a pair of side sealing portions spaced apart from each other in a third direction orthogonal to both the first and second directions, and joining a first sub-area located at the top side in the second direction relative to the first main area of ​​the first main sheet, a second sub-area located at the top side in the second direction relative to the second main area of ​​the second main sheet, and the top side sheet at the top side sealing portion; a first folding step of joining a first boundary line between the first main area and the first sub-area folding concavely to make the first main area and the first sub-area overlap; a first cutting process, cutting the top side sheet, the second sub-area, the first main area and the second main area along the first cutting line that exceeds the first boundary line at the bottom side of the second direction from the overlapping part of the top side sheet and the second sub-area; a second folding process, making the second main area and the second sub-area overlap by concave folding the second boundary line between the second main area and the second sub-area; and a second cutting process, cutting the top side sheet, the first sub-area, the first main area and the second main area along the second cutting line that exceeds the second boundary line at the bottom side of the second direction from the overlapping part of the top side sheet and the first sub-area and intersects with the first outline line formed in the first cutting process, thereby forming a top side sheet from the top side sheet.

[0011] In a preferred embodiment of the present invention, a third cutting process is also included. After the second cutting process, the first main area and the second main area are cut along a pair of third cutting lines, so that the first main body sheet is formed by the first main body sheet, and the second main body sheet is formed by the second main body sheet, and the pair of third cutting lines reaches the second outline formed in the second cutting process and the bottom side ends of the first main area and the second main area in the second direction.

[0012] In a preferred embodiment of the present invention, in the third cutting step, the third cutting line is smoothly connected to a second outer shape line formed by cutting along the second cutting line in the second cutting step.

[0013] In a preferred embodiment of the present invention, the first main body sheet, the second main body sheet, and the top sheet are one blank sheet.

[0014] In a preferred embodiment of the present invention, it also includes a process of preparing a stacked sheet of a first structural sheet and a second structural sheet having a filling material filling portion before the sheet joining process, wherein the filling material filling portion is a joined area for enclosing the filling material, and in the sheet joining process, the first structural sheet and the second structural sheet are joined to the outer sides of the first main body sheet, the second main body sheet and the top side sheet, and in the first folding process, the first cutting process, the second folding process and the second cutting process, the first structural sheet and the second structural sheet are folded and cut together with the first main body sheet, the second main body sheet and the top side sheet.

[0015] The bag container packaging manufacturing device provided by the second aspect of the present invention uses a first main sheet and a second main sheet that are opposite to each other in a first direction and a top side sheet that is arranged on the top sides of the first main sheet and the second main sheet in a second direction orthogonal to the first direction, and the bag container packaging manufacturing device includes: a sheet joining portion that joins a first main area of ​​the first main sheet and a second main area of ​​the second main sheet at a pair of side sealing portions spaced apart from each other in a third direction orthogonal to both the first and second directions, and joins a first sub-area located at the top side in the second direction relative to the first main area of ​​the first main sheet, a second sub-area located at the top side in the second direction relative to the second main area of ​​the second main sheet, and the top side sheet at the top side sealing portion; a first folding portion that joins the first main area with the first sub-area The first boundary line is folded concavely so that the first main area and the first sub-area are in an overlapping state; the first cutting portion cuts the top side sheet, the second sub-area, the first main area and the second main area along the first cutting line that exceeds the first boundary line at the bottom side of the second direction from the overlapping part of the top side sheet and the second sub-area; the second folding portion makes the second main area and the second sub-area overlap by folding the second boundary line between the second main area and the second sub-area concavely; and the second cutting portion cuts the top side sheet, the first sub-area, the first main area and the second main area along the second cutting line that exceeds the second boundary line at the bottom side of the second direction from the overlapping part of the top side sheet and the first sub-area and intersects with the first outline formed at the first cutting portion, thereby forming a top side sheet from the top side sheet.

[0016] In a preferred embodiment of the present invention, the first main area and the second main area are cut along a pair of third cutting lines, thereby forming a first main body sheet from the first main body sheet and forming a second main body sheet from the second main body sheet, and the pair of third cutting lines reach the second outline formed in the second cutting portion and the bottom side ends of the first main area and the second main area in the second direction.

[0017] Effects of the Invention

[0018] According to the present invention, the degree of freedom of the shape of the top sheet can be further increased.

[0019] Other features and advantages of the present invention will become more apparent from the following detailed description made with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a perspective view of the main parts showing a method for manufacturing a bag container package and an apparatus for manufacturing a bag container package according to a first embodiment of the present invention.

[0021] Figure 2 This is a front view of the main parts showing the structural sealed portion forming step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0022] Figure 3 It is a main part front view which shows the manufacturing method and the bag container package manufacturing apparatus of the 1st Embodiment of this invention.

[0023] Figure 4 It is a main part front view showing the auxiliary sealing portion forming step and the bag mouth hole forming step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0024] Figure 5 It is along Figure 3 Cross-sectional view of line VV.

[0025] Figure 6 It is a main part front view which shows the manufacturing method and the bag container package manufacturing apparatus of the 1st Embodiment of this invention.

[0026] Figure 7 It is a main part plan view showing the sheet joining step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0027] Figure 8 This is a front view of the main parts showing the sheet joining step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0028] Fig. 9 It is along Figure 8 Cross-sectional view along line IX-IX.

[0029] Fig.10 It is a main part front view showing the first point sealed portion forming step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0030] Fig.11 It is along Fig.10 Cross-sectional view along line XI-XI.

[0031] Fig.12 It is a main part front view which shows the manufacturing method and the bag container package manufacturing apparatus of the 1st Embodiment of this invention.

[0032] Fig.13 This is a front view of the main part showing the first cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0033] Fig.14 It is along Fig.13 Cross-sectional view along line XIV-XIV.

[0034] Fig.15 This is a front view of the main parts showing the state after the first cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0035] Fig.16 This is an enlarged front view of a main part showing a state after the first cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0036] Fig.17 It is a main part front view which shows the manufacturing method and the bag container package manufacturing apparatus of the 1st Embodiment of this invention.

[0037] Fig.18 It is a main part front view showing the second point sealing step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0038] Fig.19 It is an enlarged front view of the main part showing the second point sealing step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0039] Fig. 20 This is a front view of the main part showing the second cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0040] Fig.21This is a rear view of the main parts showing the second cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0041] Fig. 22 This is an enlarged rear view of the main part showing the second cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0042] Fig.23 It is along Fig. 20 Cross-sectional view along line XXIII-XXIII.

[0043] Fig.24 This is a front view of the main part showing the third cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0044] Fig.25 This is a rear view of the main parts showing the third cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0045] Fig.26 It is along Fig.24 Cross-sectional view along line XXVI-XXVI.

[0046] Fig. 27 It is a main part front view showing the state after the third cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0047] Fig.28 It is a rear view of the main part showing the state after the third cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0048] Fig.29 It is an enlarged rear view of the main part showing the state after the third cutting step in the method for manufacturing the bag container package according to the first embodiment of the present invention.

[0049] Fig.30 This is a perspective view showing an example of a bag container package manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus according to the first embodiment of the present invention, as seen from the front side.

[0050] Fig.31 This is a perspective view showing an example of a bag container package manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus according to the first embodiment of the present invention, as seen from the back side.

[0051] Fig.32 It is along Fig.30 Cross-sectional view along line XXXII-XXXII.

[0052] Fig.33 It is along Fig.30 Cross-sectional view along line XXXIII-XXXIII.

[0053] Fig.34 This is a perspective view, viewed from the back side, showing a process of filling a filling material into a bag container package manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus according to the first embodiment of the present invention.

[0054] Fig.35 It is along Fig.34 Cross-sectional view of line XXXV-XXXV.

[0055] Fig.36 The perspective view is a view showing a process of sealing a filling material sealing portion of a bag container package manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus according to the first embodiment of the present invention, as viewed from the back side.

[0056] Fig.37 This is a perspective view showing a bag container and a bag container package manufactured using the bag container package manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus according to the first embodiment of the present invention, as seen from the front side.

[0057] Fig.38 It is along Fig.37 Cross-sectional view along line XXXVIII-XXXVIII. DETAILED DESCRIPTION

[0058] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0059] The terms "first", "second", "third" and the like in this specification are used merely as labels and do not necessarily have the intention of giving an order to these objects.

[0060] Figure 1 , Figure 3 , Figure 6 , Fig.12 and Fig.17The present invention shows a method for manufacturing a bag container package and a bag container package manufacturing device according to a first embodiment of the present invention. The method for manufacturing a bag container package according to this embodiment includes a structural sealing portion forming step P1, an auxiliary sealing portion forming step P2, a spout hole forming step P3, a bending line forming step P4, a first preliminary folding step P5, a spout mounting step P6, a second preliminary folding step P7, a sheet joining step P8, a first folding step P9, a first point sealing portion forming step P10, a first cutting step P11, a second folding step P12, a second point sealing step P13, a second cutting step P14, and a third cutting step P15. In addition, the bag container package manufacturing device S1 of the present embodiment includes a structural seal forming part U1, an auxiliary seal forming part U2, a spout hole forming part U3, a bending line forming part U4, a first preliminary folding part U5, a spout mounting part U6, a second preliminary folding part U7, a sheet joining part U8, a first folding part U9, a first point seal forming part U10, a first cutting part U11, a second folding part U12, a second point seal U13, a second cutting part U14, and a third cutting part U15. The bag container package manufacturing method and the bag container package manufacturing device S1 of the present embodiment are structures for continuously manufacturing a plurality of bag container packages A1. In the present embodiment, the case where each process is performed in the structural seal forming part U1 to the third cutting part U15 while the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 described later are maintained in a state of being connected in a strip shape is described. Unlike the present embodiment, a structure may be adopted in which each process is performed in a state where the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are appropriately divided. As a mechanism for conveying the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 connected in a strip shape in the x direction, various conventionally known conveying mechanisms not shown in the figure can be appropriately adopted. For example, in the present embodiment, a mechanism is envisioned for clamping the portions of the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 that become the packaging material A1 for the bag container between each other and pulling them in the x direction. In addition, in the present embodiment, a conveying section U21 for conveying the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 in the second cutting section U14 and the third cutting section U15 is included.

[0061] In addition, there is no limitation on the structure of the manufacturing method of the bag container packaging and the bag container packaging manufacturing device of the present invention. For example, a structure in which the structural sealing portion forming step P1 and the auxiliary sealing portion forming step P2 are completed in advance through other steps can be adopted. In this case, a device structure without the structural sealing portion forming part U1 and the auxiliary sealing portion forming part U2 can also be adopted. A structure in which the bag spout hole forming step P3, the bending line forming step P4, the first preliminary folding step P5, the bag spout installation step P6, the second preliminary folding step P7 and the sheet joining step P8 are completed in advance through other steps can also be adopted. In this case, a device structure without the bag spout hole forming part U3, the bending line forming part U4, the first preliminary folding part U5, the bag spout installation part U6, the second preliminary folding part U7 and the sheet joining part U8 can be adopted.

[0062] In addition, as referenced Figure 30 to Figure 33 As described later, the bag container package A1 manufactured by the bag container package manufacturing method and bag container package manufacturing apparatus of the present embodiment has a structure including the first structural piece 15 and the second structural piece 16 in addition to the first main body sheet 11, the second main body sheet 12, the top side sheet 13 and the bottom gusset sheet 14, but may also have a structure without the first structural piece 15 and the second structural piece 16. In addition, for example, a structure without the bottom gusset sheet 14 may also be employed.

[0063] In the following figures, the y direction corresponds to the first direction in the present invention, the z direction corresponds to the second direction in the present invention, and the x direction corresponds to the third direction in the present invention. The z direction may coincide with the vertical direction. The x direction is the conveying direction of the sheet in the manufacturing method for bag container packaging and the bag container packaging manufacturing device S1. In addition, Figure 1 to Figure 3 The z direction in the diagram does not necessarily correspond to the second direction of the present invention at least in a section until a first preliminary folding step P5 in a first preliminary folding portion U5 described later is completed.

[0064] <Structural Sealing Section Forming Step P1, Structural Sealing Section Forming Section U1>

[0065] like Figure 1 As shown, a first structural sheet 150 and a second structural sheet 160 are prepared. The first structural sheet 150 and the second structural sheet 160 are strip-shaped synthetic resin sheets that can form the first structural sheets 15 and the second structural sheets 16 in a plurality of bag container packages A1, respectively, and extend long in the x direction. The package outline 19 shown in the figure is an imaginary line indicating the outline of the bag container package A1, and is described for ease of understanding.

[0066] Under the premise of the subsequent manufacturing method, both sides of the first structural sheet 150 are composed of sealing film layers, the inner surface of the second structural sheet 160 (the surface facing the first structural sheet 150) is composed of a sealing film layer, and the outer surface (the surface on the opposite side of the first structural sheet 150) is composed of a base film layer. The first structural sheet 150 can also be a structure in which a base film layer is sandwiched between two sealing film layers, or a co-extruded film with two surfaces as heat-sealing layers and a polyamide layer in the middle. In addition, when the first structural sheet 150 and the second structural sheet 160 need to have higher gas barrier properties and light shielding properties, it is preferred to adopt a structure that also has a barrier layer, a barrier resin, a vapor-deposited layer, and a coloring layer.

[0067] Here, the constituent materials of the substrate film layer, the sealing film layer and the barrier layer are exemplified. In addition, the lamination of these layers can be carried out by conventional lamination methods, such as coextrusion lamination, dry lamination using an adhesive, thermal lamination with a thermal adhesive layer sandwiched therebetween and bonded by heat, etc.

[0068] Examples of films constituting the substrate film layer include stretched or unstretched films having one or more layers composed of polyester (polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polybutylene terephthalate (PBT), polycarbonate (PC), etc.), polyolefin (polyethylene (PE), polypropylene (PP), etc.), polyamide (nylon-6, nylon-66, etc.), and preferably a biaxially stretched film.

[0069] As the film constituting the sealing film layer, examples include one or more layers of films composed of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), ethylene-propylene copolymer (EP), unstretched polypropylene (CPP), ethylene-olefin copolymer, ethylene-acrylic acid copolymer (EAA), ethylene-methacrylic acid copolymer (EMAA) and ethylene-vinyl acetate copolymer (EVA).

[0070] As a barrier layer, examples include a film of inorganic oxides such as aluminum, aluminum oxide, and silicon dioxide vapor-deposited (or sputtered) on a metal foil such as aluminum, or a film such as polyvinylidene chloride (PVDC), ethylene-vinyl alcohol copolymer (EVOH), a resin, or any synthetic resin film (for example, it can also be a base film layer).

[0071] A plurality of sealing through holes 169 and a plurality of filling ports 58 are pre-formed in the second structural sheet 160. The plurality of sealing through holes 169 are provided for joining the first structural sheets 150 to each other in the sheet joining step P8 described later. The filling ports 58 are portions for filling the filling material sealing portion 5 described later with the filling material 59 described later. After the first structural sheet 150 and the second structural sheet 160 are overlapped, a structural sealing portion forming step P1 is performed in the structural sealing portion forming portion U1. The structural sealing portion forming step P1 is a step of joining a portion of each of the first structural sheet 150 and the second structural sheet 160, and the joining is performed using heat sealing.

[0072] Figure 2 1 is a plan view showing a portion of the first structural sheet 150 and the second structural sheet 160 in the x direction. The first structural sheet 150 and the second structural sheet 160 shown in the figure are of a size that can form a bag container package A1. Figure 2 As shown, the first structural sheet 150 will be bent in a process described later, and considering the bending, it has a first main region 1510, a first sub-region 1520, a second main region 1540, a second sub-region 1550, a top region 1570, and a bottom region 1580. In addition, the second structural sheet 160 has a first main region 1610, a first sub-region 1620, a second main region 1640, a second sub-region 1650, a top region 1670, and a bottom region 1680. In the structural sealed portion forming step P1, the structural sealed portion 4 and the filling material sealing portion 5 are formed by heat-sealing each part of the first structural sheet 150 and the second structural sheet 160.

[0073] In the example shown in the figure, the structural sealing part 4 includes a first structural sealing part 41, a second structural sealing part 42, a top structural sealing part 43, a bottom structural sealing part 44, and an extended structural sealing part 45. The first structural sealing part 41 is a part formed by heat-sealing the first main area 1510 and the first sub-area 1520 of the first structural sheet 150 and a part of each of the first main area 1610 and the first sub-area 1620 of the second structural sheet 160. In the example shown in the figure, the first structural sealing part 41 is in a roughly double-layered ring shape. The second structural sealing part 42 is a part formed by heat-sealing the second main area 1540 and the second sub-area 1550 of the first structural sheet 150 and a part of each of the second main area 1640 and the second sub-area 1650 of the second structural sheet 160. In the example shown in the figure, the second structural sealing part 42 is in a roughly double-layered ring shape.

[0074] The top-side structural sealing portion 43 is a portion formed by heat-sealing a portion of each of the top-side region 1570 of the first structural sheet 150 and the top-side region 1670 of the second structural sheet 160. In the illustrated example, the top-side structural sealing portion 43 is in a roughly single-layer ring shape. The bottom-side structural sealing portion 44 is a portion formed by heat-sealing a portion of each of the bottom-side region 1580 of the first structural sheet 150 and the bottom-side region 1680 of the second structural sheet 160. In the illustrated example, the bottom-side structural sealing portion 44 is in a roughly double-layer ring shape. The extended structural sealing portion 45 is a portion formed by heat-sealing a portion of each of the first sub-region 1520 of the first structural sheet 150 and the first sub-region 1620 of the second structural sheet 160. In the illustrated example, the extended structural sealing portion 45 is a pair of strip-shaped portions extending in the z direction.

[0075] The filling material enclosing portion 5 is a member for maintaining the outer shape and promoting self-reliance of a bag container formed using the bag container packaging material A1 by filling a filling material 59 described later. In the example shown in the figure, the filling material enclosing portion 5 has a first filler enclosing portion 51, a second filler enclosing portion 52, a top filler enclosing portion 53, a bottom filler enclosing portion 54, and an extended filler enclosing portion 55.

[0076] The first filler encapsulation portion 51 is the space between the first main region 1510 and the first sub-region 1520 of the first structural sheet 150 and the first main region 1610 and the first sub-region 1620 of the second structural sheet 160, and is a portion defined by the first structural sealing portion 41. The second filler encapsulation portion 52 is the space between the second main region 1540 and the second sub-region 1550 of the first structural sheet 150 and the second main region 1640 and the second sub-region 1650 of the second structural sheet 160, and is a portion defined by the second structural sealing portion 42.

[0077] The top side filler encapsulation part 53 is a space between the top side region 1570 of the first structural sheet 150 and the top side region 1670 of the second structural sheet 160, and is a portion defined by the top side structural sealing part 43. The bottom side filler encapsulation part 54 is a space between the bottom side region 1580 of the first structural sheet 150 and the bottom side region 1680 of the second structural sheet 160, and is a portion defined by the bottom side structural sealing part 44. The extended filler encapsulation part 55 is a space between the first sub-region 1520 of the first structural sheet 150 and the first sub-region 1620 of the second structural sheet 160, and is a portion defined by the extended structural sealing part 45. The filling port 58 is connected to the extended filler encapsulation part 55. In the present embodiment, the filling port 58 is an opening portion between the ends of the first sub-region 152 and the first sub-region 162 in the z direction.

[0078] The structural sealing portion forming part U1 is a part that realizes the function of forming the structural sealing portion 4 between the first structural sheet 150 and the second structural sheet 160. The specific structure of the structural sealing portion forming part U1 is not limited in any way, and for example, it can appropriately include a sealing mold with a built-in heater as known in the prior art, a cooling part for cooling the sealing portion formed by the sealing mold, etc.

[0079] <Auxiliary Sealing Section Forming Step P2, Auxiliary Sealing Section Forming Step U2>

[0080] like Figure 1 As shown, after the structural sealing portion forming step P1, the blank sheet 10 is stacked in a manner facing the first structural sheet 150. The blank sheet 10 is a sheet constituting the first main body sheet 110, the second main body sheet 120, the top sheet 130 and the bottom sheet 140 described later. That is, in the present embodiment, the first main body sheet 110, the second main body sheet 120, the top sheet 130 and the bottom sheet 140 are constituted by one blank sheet 10. In addition, unlike the present embodiment, all or one of the first main body sheet 110, the second main body sheet 120, the top sheet 130 and the bottom sheet 140 may be constituted by sheets separated from each other.

[0081] Next, the auxiliary sealing portion forming step P2 is performed in the auxiliary sealing portion forming section U2. In the auxiliary sealing portion forming step P2, the auxiliary sealing portion 39 is formed on the blank sheet 10, the first structural sheet 150 and the second structural sheet 160. The auxiliary sealing portion 39 temporarily fixes the blank sheet 10, the first structural sheet 150 and the second structural sheet 160. In addition, in the present manufacturing method, both surfaces of the blank sheet 10 are composed of sealing film layers, and a base film layer and a barrier layer are appropriately provided between these sealing film layers.

[0082] The auxiliary sealing portion forming part U2 is a part for realizing the function of forming a plurality of auxiliary sealing portions 39 on the blank sheet 10, the first structural sheet 150, and the second structural sheet 160. The specific structure of the auxiliary sealing portion forming part U2 is not limited in any way, and for example, it can appropriately include a sealing mold with a built-in heater as known in the prior art, a cooling part for cooling the sealed portion formed by the sealing mold, and the like.

[0083] <Bag Spout Hole Forming Step P3, Bag Spout Hole Forming Unit U3>

[0084] After the auxiliary sealing portion forming step P2 at the auxiliary sealing portion forming portion U2 is performed, Figure 3 As shown in FIG. 1 , the bag spout hole forming step P3 is performed in the bag spout hole forming section U3. In the bag spout hole forming step P3, as shown in FIG. Figure 4 As shown, the spout hole 137 , the spout hole 1571 , and the spout hole 1671 are formed in the blank sheet 10 , the first structure sheet 150 , and the second structure sheet 160 . Figure 4 1 is a plan view of the main parts showing a part of the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 in the x direction. The blank sheet 10, the first structural sheet 150 and the second structural sheet 160 shown in the figure are of a size that can form a bag container package A1. The spout hole 137, the spout hole 1571 and the spout hole 1671 penetrate the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 respectively, and are formed in the top side sheet 130, the top side area 1570 and the top side area 1670 at a position surrounded by the top side structural sealing part 43. In the example shown in the figure, the spout hole 137, the spout hole 1571 and the spout hole 1671 are consistent with each other (aligned).

[0085] The spout hole forming portion U3 is a portion that realizes the function of forming the spout hole 137, the spout hole 1571, and the spout hole 1671 in the blank sheet 10, the first structural sheet 150, and the second structural sheet 160. The specific structure of the spout hole forming portion U3 is not limited in any way. For example, a cutting blade, a cutting die, or a laser known in the prior art can be used appropriately. From the viewpoint of durability, a cutting die using a punch and a die is preferably used.

[0086] <Bending Line Forming Step P4, Bending Line Forming Unit U4>

[0087] like Figure 3 As shown in FIG. 1 , a bending line forming step P4 is performed in the bending line forming portion U4. In the bending line forming step P4, as shown in FIG. Figure 4 As shown in FIG. 1 , bend lines 171, 172, 173, 174, 175, and 176 are formed on the blank sheet 10, the first structural sheet 150, and the second structural sheet 160. The bend lines 171, 172, 173, 174, 175, and 176 are provided to facilitate and reliably perform the process of folding the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 in the subsequent process. In addition, a part or all of the bend line forming process P4 may be omitted and the subsequent process may be performed.

[0088] The bending line 171 is provided at a position dividing the top sheet 130, the top region 1570, and the top region 1670 from the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650. The bending line 172 is provided at a position dividing the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650 from the second main region 1210, the second main region 1540, and the second main region 1640. The bending line 173 is provided at a position dividing the second main region 1210, the second main region 1540, and the second main region 1640 from the bottom sheet 140, the bottom region 1580, and the bottom region 1680. The bending line 175 is provided at a position dividing the bottom sheet 140, the bottom area 1580, and the bottom area 1680 from the first main area 1110, the first main area 1510, and the first main area 1610. The bending line 174 is provided between the bending line 173 and the bending line 175. The bending line 176 is provided at a position dividing the first main area 1110, the first main area 1510, and the first main area 1610 from the first sub-area 1120, the first sub-area 1520, and the first sub-area 1620.

[0089] The bending line forming portion U4 is a portion for realizing the function of forming bending lines 171, 172, 173, 174, 175, and 176 in the blank sheet 10, the first structural sheet 150, and the second structural sheet 160. The specific structure of the bending line forming portion U4 is not limited in any way, and for example, various structures known in the prior art that can provide local folds to the sheets can be appropriately used.

[0090] <First Preliminary Folding Step P5, First Preliminary Folding Section U5>

[0091] Next, the first preliminary folding step P5 is performed in the first preliminary folding section U5. In the first preliminary folding step P5, the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are folded concavely at the bending line 171 so that the blank sheet 10 is on the inside. In addition, the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are folded convexly at the bending line 172 so that the blank sheet 10 is on the outside. The blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are folded concavely at the bending lines 173 and 175 so that the blank sheet 10 is on the inside, and the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are folded convexly at the bending line 174 so that the blank sheet 10 is on the outside. Furthermore, the blank sheet 10 , the first structure sheet 150 , and the second structure sheet 160 are convexly folded at the folding line 176 so that the blank sheet 10 is on the outside.

[0092] The first preliminary folding section U5 is a part that realizes the function of the first preliminary folding step P5. The specific structure of the first preliminary folding section U5 is not limited at all, and for example, a sheet folding mechanism known in the related art can be appropriately used.

[0093] like Figure 5 As shown, the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 are respectively divided into the top sheet 130, the top area 1570 and the top area 1670 by bending at the bending line 171. In addition, the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 are respectively divided into the second main body sheet 120, the second main area 1540, the second sub-area 1550, the second main area 1640 and the second sub-area 1650 by bending at the bending line 172. In addition, the bottom sheet 140, the bottom area 1580 and the bottom area 1680 and the first main body sheet 110 are divided by bending at the bending lines 173 and 175. Furthermore, the first main region 1110, the first sub-region 1120, the first main region 1510, the first sub-region 1520, the first main region 1610, and the first sub-region 1620 are divided by bending at the bending line 176. Figure 5 In the figure, for ease of understanding, the thickness of each sheet is recorded as a thickness that can be visually recognized in the figure, which is obviously thicker than the actual thickness. Therefore, the bending state and overlapping state of each sheet are recorded in a manner different from the actual state. The same applies to the subsequent cross-sectional views.

[0094] Furthermore, the second boundary line 1230, the second boundary line 1560, and the second boundary line 1660 are formed in the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 by bending at the bending line 172. The second boundary line 1230, the second boundary line 1560, and the second boundary line 1660 are the boundaries between the second main region 1210, the second main region 1540, and the second main region 1640 and the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650. Furthermore, the first boundary line 1130, the first boundary line 1530, and the first boundary line 1630 are formed in the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 by bending at the bending line 176. The first boundary lines 1130 , 1530 , and 1630 are boundaries between the first main regions 1110 , 1510 , and 1610 and the first sub-regions 1120 , 1520 , and 1620 .

[0095] <Bag spout installation process P6, bag spout installation part U6>

[0096] Next, the spout installation step P6 is performed in the spout installation unit U6. In the spout installation step P6, Figure 5As shown, the spout 71 of the spout 7 is inserted into the spout hole 137, the spout hole 1571, and the spout hole 1671. The top sheet 130, the top region 1570, and the top region 1670 are heat-sealed with the flange 72 to form the spout sealing portion 33. The flange 72 of the spout 7 is a molded product formed of a heat-sealable resin such as polyethylene or polypropylene.

[0097] The spout mounting part U6 is a part that realizes the function of mounting the spout 7 in the spout mounting step P6. The specific structure of the spout mounting part U6 is not limited in any way, and for example, it can appropriately include a conveying mechanism for inserting the spout 7, a sealing mold with a built-in heater for heat sealing, a cooling part for cooling the sealed part formed by the sealing mold, and the like, which are well known in the prior art.

[0098] <Second Preliminary Folding Step P7, Second Preliminary Folding Section U7>

[0099] Next, if Figure 6 As shown, the second preliminary folding step P7 is performed in the second preliminary folding section U7. In the second preliminary folding step P7, the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 are folded at the bending line 171 in such a manner that the top sheet 130, the top region 1570, and the top region 1670 are in a posture along the x-direction and the y-direction. As a result, the top sheet 130, the top region 1570, and the top region 1670, the first sub-region 1120, the first sub-region 1520, and the first sub-region 1620, and the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650 are in a state along the x-direction and the y-direction.

[0100] The second preliminary folding portion U7 is a portion that realizes the folding function in the spout mounting step P6. The specific structure of the second preliminary folding portion U7 is not limited at all, and for example, a sheet folding mechanism known in the art can be appropriately used.

[0101] <Sheet Joining Step P8, Sheet Joining Section U8>

[0102] Next, the sheet joining process P8 is performed in the sheet joining section U8. In the sheet joining process P8, as shown in FIG. Figure 7 , Figure 8 and Fig. 9 As shown, the sealed portion 30 is formed by joining a portion of the blank sheet 10 , the first structure sheet 150 , and the second structure sheet 160 . Figure 7 and Figure 8 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0103] The sealing portion 30 is a portion formed by appropriately joining parts of the first main body sheet 110, the second main body sheet 120, the top side sheet 130, the bottom side sheet 140, the first structural sheet 150, and the second structural sheet 160. In this embodiment, the sealing portion 30 is joined by heat sealing. The sealing portion 30 has a pair of side sealing portions 310 and a top side sealing portion 320.

[0104] A pair of side seals 310 are portions where the ends of the first main body sheet 110, the second main body sheet 120, the bottom side sheet 140, the first structural sheet 150, and the second structural sheet 160 in the x direction are joined to each other. In the illustrated example, the pair of side seals 310 are formed in a manner that they overlap the outer side or a portion of the first structural sealing portion 41 in the x direction. The pair of side seals 310 overlap with a pair of sealing through holes 169, respectively. The sealing through holes 169 constitute an area where the bottom side area 1680 does not exist, and the bottom side areas 1580 are joined to each other by heat sealing via the sealing through holes 169. The portions of the bottom side area 1680 other than the sealing through holes 169 are not heat-sealed to each other, so a gusset structure is formed.

[0105] The top side sealing portion 320 is a portion where the top side sheet 130, the top side regions 1570 and 1670, the first sub-regions 1120, 1520 and 1620, and the second sub-regions 1220, 1550 and 1650 are joined. In the example shown in the figure, the top side sealing portion 320 is formed so as to overlap the outer side or a part of the top side structural sealing portion 43.

[0106] The sheet joint part U8 is a part that realizes the heat sealing function in the sheet joint process P8. The specific structure of the sheet joint part U8 is not limited in any way, and for example, it can appropriately include a sealing mold with a built-in heater for heat sealing, a cooling part for cooling the sealed part formed by the sealing mold, etc., which are well known in the prior art.

[0107] <First Folding Step P9, First Folding Section U9>

[0108] Next, if Figure 6 As shown, the first folding step P9 is performed in the first folding section U9. In the first folding step P9, Fig. 9 The first boundary line 1130, the first boundary line 1530 and the first boundary line 1630 shown in FIG. 1 bend the first main body sheet 110, the first structure sheet 150 and the second structure sheet 160. Fig.11As shown, the second main sheet 120 is placed in a state along the z direction. Moreover, the first main region 1110, the first main region 1510, and the first main region 1610 are placed in an overlapping state with the first sub-region 1120, the first sub-region 1520, and the first sub-region 1620 in a posture along the z direction. In addition, the top sheet 130, the top side region 1570, and the top side region 1670 sandwich the first sub-region 1120, the first sub-region 1520, and the first sub-region 1620 in the y direction, and the first main region 1110, the first main region 1510, and the first main region 1610 are placed in a state along the z direction.

[0109] The first folding unit U9 is a part that realizes the folding function in the first folding step P9. The specific structure of the first folding unit U9 is not limited at all, and for example, a sheet folding mechanism known in the related art can be appropriately used.

[0110] <First Point Sealed Section Forming Step P10, First Point Sealed Section Forming Unit U10>

[0111] Next, if Figure 6 As shown, the first point sealing portion forming step P10 is performed at the first point sealing portion forming part U10. In the first point sealing portion forming step P10, a plurality of first reinforcing sealing portions 391 are formed at appropriate positions of the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 in a state where the first folding step P9 is completed. The plurality of first reinforcing sealing portions 391 are formed for the purpose of locally improving the bonding function achieved by the sealing portion 30. Fig.10 As shown, in the example shown in the figure, the plurality of first reinforcing sealed portions 391 include first reinforcing sealed portions 391a, 391b, and 391c. Fig.10 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0112] The first reinforced seal portion 391a is formed at a position where the first boundary line 1130, the second boundary line 1230, the first boundary line 1530, the second boundary line 1560, the first boundary line 1630, and the second boundary line 1660 overlap with both ends in the x direction of the package outer line 19. The first reinforced seal portion 391b is formed at a position where the convex folded portion of the bottom sheet 140, the bottom area 1580, and the bottom area 1680 overlap with both ends in the x direction of the package outer line 19. The first reinforced seal portion 391c is formed at a position overlapping the sealing through hole 169.

[0113] The first point sealing portion forming part U10 is a part that realizes the heat sealing function in the first point sealing portion forming step P10. The specific structure of the first point sealing portion forming part U10 is not limited in any way, and for example, it can appropriately include a sealing mold with a built-in heater for heat sealing as known in the prior art, a cooling part for cooling the sealed part formed by the sealing mold, etc.

[0114] <First Cutting Step P11, First Cutting Section U11>

[0115] Next, if Fig.12 As shown, the first cutting step P11 is performed at the first cutting section U11. In the first cutting step P11, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 in a state where the first folding step P9 (and the first point sealing portion forming step P10) are completed are cut along the first cutting line CL1. Fig.13 As shown, the first cutting line CL1 extends from the portion where the top sheet 130, the top region 1570 and the top region 1670 overlap with the second sub-region 1220, the second sub-region 1550 and the second sub-region 1650 (the portion closer to the top side of the first boundary line 1130, the second boundary line 1230, the first boundary line 1530, the second boundary line 1560, the first boundary line 1630 and the second boundary line 1660 in the z direction) to the bottom side of the z direction beyond the first boundary line 1130, the first boundary line 1530 and the first boundary line 1630. In the example shown in the figure, two first cutting lines CL1 are set on both sides in the x direction. The top structural sealing portion 43, the top filler sealing portion 53 and the bag spout 7 are located between the two first cutting lines CL1 in the x direction. Fig.13 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0116] The first cutting section U11 is a part that realizes the cutting function in the first cutting step P11. Regarding the specific structure of the first cutting section U11, a cutting knife, a cutting die, a laser, etc. can be used appropriately without any limitation. As a specific structure for realizing the cutting function of the first cutting section U11, a cutting knife, a so-called Thomson knife, is suitable for cutting a laminated film constituting a packaging material for a bag container, and is preferred from the viewpoint of being easy to change the cutting shape, etc. In this embodiment, as Fig.14As shown, it has a receiving portion 811 and a cutting portion 812. The receiving portion 811 is located on one side of the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 in the y direction, and is the portion that receives the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 to be cut. The cutting portion 812 is the portion that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and in the example shown in the figure, it has a supporting portion 813, a cutting knife 815 and a driving cylinder 816. The supporting portion 813 is the portion that supports the cutting knife 815. The cutting knife 815 is a knife that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and is in the same plane as the cutting knife 815 when viewed from the y direction. Fig.14 The driving cylinder 816 is a driving source for moving the support portion 813 and the cutting blade 815 forward and backward relative to the receiving portion 811. In addition, a through hole 814 is provided in the support portion 813. When the support portion 813 and the cutting blade 815 move toward the receiving portion 811, the through hole 814 is used to avoid interference by the bag spout 7.

[0117] like Fig.15 and Fig.16 As shown, after the first cutting step P11 is completed, a first outer line OL1 is formed on the blank sheet 10, the first structure sheet 150 and the second structure sheet 160. The first outer line OL1 spans the first boundary line 1130, the first boundary line 1530 and the first boundary line 1630 and intersects the first reinforced sealed portion 391a. Fig.15 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0118] <Second Folding Step P12, Second Folding Section U12>

[0119] Next, if Fig.12 As shown in FIG. 1 , the second folding step P12 is performed in the second folding portion U12. In the second folding step P12, the second boundary line 1230, the second boundary line 1560, and the second boundary line 1660 are concavely folded. Fig.23As shown, the first main sheet 110, the first main region 1510, the first sub-region 1520, the first main region 1610, and the first sub-region 1620 are in a state along the z direction. Moreover, the second main region 1210, the second main region 1540, and the second main region 1640 overlap with the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650 in the z direction. In addition, the top sheet 130, the top side region 1570, and the top side region 1670 are in a state along the z direction on the side opposite to the second main region 1210 across the second sub-region 1220, the second sub-region 1550, and the second sub-region 1650 in the y direction.

[0120] The second folding unit U12 is a part that realizes the folding function in the second folding step P12. The specific structure of the second folding unit U12 is not limited at all, and for example, a sheet folding mechanism known in the related art can be appropriately used.

[0121] <Second Point Sealing Step P13, Second Point Sealing Unit U13>

[0122] Next, if Fig.17 As shown, the second point sealing process P13 is performed at the second point sealing portion U13. In the second point sealing process P13, a plurality of second reinforcing sealing portions 392 are formed at appropriate positions of the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 in a state where the second folding process P12 is completed. Fig.18 and Fig.19 As shown, a plurality of second reinforcing sealing portions 392 are formed for the purpose of locally improving the bonding function based on the sealing portion 30 . Fig.18 1 is a plan view showing a portion of the blank sheet 10, the first structural sheet 150, and the second structural sheet 160 in the x direction. The blank sheet 10, the first structural sheet 150, and the second structural sheet 160 shown in the figure are of a size that can form a bag container package A1. Fig.19 As shown, in the example shown in the figure, the second reinforced sealing portion 392 is formed across the portion of the top sealing portion 320 surrounded by the package outline 19 and the first outline OL1 and the portion extending from the portion to the top side in the z direction beyond the package outline 19. However, the second reinforced sealing portion 392 does not reach the first outline OL1.

[0123] The second point sealing part U13 is a part that realizes the heat sealing function in the second point sealing step P13. The specific structure of the second point sealing part U13 is not limited in any way, and for example, it can appropriately include a sealing mold with a built-in heater for heat sealing, a cooling part for cooling the sealed part formed by the sealing mold, etc.

[0124] <Second Cutting Step P14, Second Cutting Unit U14>

[0125] Next, if Fig.17 As shown, the second cutting step P14 is performed in the second cutting section U14. In the second cutting step P14, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 in the state of finishing the second folding step P12 (and the second point sealing step P13) are cut along the second cutting line CL2. Fig. 20 , Fig.21 , Fig. 22 and Fig.23 As shown, the second cutting line CL2 starts from the portion where the top side sheet 130, the top side region 1570 and the top side region 1670 overlap with the first sub-region 1120, the first sub-region 1520 and the first sub-region 1620 (the portion that is closer to the top side in the z direction than the first boundary line 1130, the second boundary line 1230, the first boundary line 1530, the second boundary line 1560, the first boundary line 1630 and the second boundary line 1660), exceeds the first boundary line 1130, the second boundary line 1230, the first boundary line 1530, the second boundary line 1560, the first boundary line 1630 and the second boundary line 1660 on the bottom side in the z direction, and intersects the first outline line OL1. Fig. 20 and Fig.21 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0126] In the example shown in the figure, Figure 20 to Figure 22 As shown, a second cutting line CL2 extends from the top side of the spout 7 in the z direction to both sides in the x direction and the bottom side in the z direction, sandwiching the spout 7, the top side structural sealing portion 43 and the top side filler sealing portion 53 to reach the first outer line OL1. Fig. 22 As shown, the second cutting line CL2 intersects the second reinforced sealing portion 392. Furthermore, the second cutting line CL2 is smoothly connected to the package outer line 19. By cutting along the second cutting line CL2, a Fig.25 Then, the portion of the top sheet 130 surrounded by the first outer line OL1 and the second outer line OL2 is separated into individual pieces to form the top sheet 13 .

[0127] The second cutting section U14 is a part that realizes the cutting function in the second cutting step P14. The specific structure of the second cutting section U14 can be appropriately used by a cutting knife, a cutting die, a laser, etc., without any limitation. As a specific structure for realizing the cutting function of the second cutting step P14, a cutting knife, a so-called Thomson knife, is suitable for cutting a laminated film constituting a bag container packaging material, and is preferred from the viewpoint of being easy to change the cutting shape, etc. In this embodiment, as Fig.23 As shown, it has a receiving portion 821 and a cutting portion 822. The receiving portion 821 is located on one side of the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 in the y direction, and is the portion that receives the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 to be cut. The cutting portion 822 is the portion that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and in the example shown in the figure, it has a supporting portion 823, a cutting knife 825 and a driving cylinder 826. The supporting portion 823 is the portion that supports the cutting knife 825. The cutting knife 825 is a knife that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and is in contact with the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 when viewed from the y direction. Figure 20 to Figure 22 The driving cylinder 826 is a driving source for moving the support portion 823 and the cutting blade 825 forward and backward relative to the receiving portion 821. In addition, a through hole 824 is provided in the support portion 823. When the support portion 823 and the cutting blade 825 move toward the receiving portion 821, the through hole 824 is used to avoid interference by the storage bag spout 7.

[0128] The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 that have completed the second cutting step P14 by the second cutting unit U14 are transported to the third cutting unit U15 by the transport unit U21. Fig.24 , Fig.25 and Fig.26 As shown, the conveying unit U21 has a pair of clamping parts 91. The pair of clamping parts 91 can approach and move away from each other in the y direction, and by approaching each other, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 are clamped across the upper part of the second outer line OL2 in the z direction. In this state, the conveying unit U21 can move the pair of 91 in the x direction. As a driving source of the conveying unit U21, a motor, a cylinder, etc. can be appropriately used.

[0129] <Third Cutting Step P15, Third Cutting Section U15>

[0130] Next, if Fig.17As shown, the third cutting step P15 is performed in the third cutting section U15. In the third cutting step P15, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 that have completed the second cutting step P14 are cut along a pair of third cutting lines CL3 while being sandwiched by a pair of sandwiching sections 91 across the second outer line OL2. Figure 24 to Figure 26 As shown, the third cutting line CL3 reaches the second outer line OL2 and the bottom side end of the first main area 1610 in the z direction and the bottom side end of the second main area 1640 in the z direction. In addition, in the example shown in the figure, the third cutting line CL3 intersects the first reinforced sealing part 391b and the first reinforced sealing part 391c. Further, the third cutting line CL3 is smoothly connected to the second outer line OL2. Fig.24 and Fig.25 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0131] The third cutting section U15 is a part that realizes the cutting function in the third cutting step P15. The specific structure of the third cutting section U15 can be appropriately used with a cutting knife, a cutting die, a laser, etc., without any limitation. As a cutting function for realizing the third cutting step P15, a cutting knife, a so-called Thomson knife, is suitable for cutting a laminated film constituting a bag container packaging material, and is preferred from the viewpoint of being easy to change the cutting shape, etc. In this embodiment, as Fig.26 As shown, it has a receiving portion 831 and a cutting portion 832. The receiving portion 831 is located on one side of the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 in the y direction, and is a portion that supports the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 to be cut. The cutting portion 832 is a portion that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and in the example shown in the figure, it has a supporting portion 833, a cutting knife 835 and a driving cylinder 836. The supporting portion 833 is a portion that supports the cutting knife 835. The cutting knife 835 is a knife that cuts the blank sheet 10, the first structural sheet 150 and the second structural sheet 160, and is in the same direction as the blank sheet 10, the first structural sheet 150 and the second structural sheet 160 when viewed from the y direction. Fig.24 and Fig.25 The driving cylinder 836 is a driving source for moving the support portion 833 and the cutting blade 835 forward and backward relative to the receiving portion 831. In addition, a recessed portion 837 is provided in the support portion 833. When the support portion 833 and the cutting blade 835 move forward toward the receiving portion 831, the recessed portion 837 avoids interference with the bag spout 7.

[0132] After cutting along the third cutting line CL3 in the third cutting step P15, the third outer line OL3 is formed, and the portion divided by the first outer line OL1, the second outer line OL2, and the third outer line OL3 is completely singulated. Figure 24 to Figure 26 The portion shown in the figure is clamped by the pair of clamping parts 91 of the conveying unit U21 in the third cutting step P15. Therefore, the portion divided by the first outer line OL1, the second outer line OL2, and the third outer line OL3 is also maintained in a state of being clamped by the pair of clamping parts 91 together with other portions after cutting in the third cutting step P15.

[0133] Next, if Figure 27 to Figure 29 As shown, the pair of clamping parts 91 of the conveying unit 21 are released. As a result, the portions of the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 defined by the first outer line OL1, the second outer line OL2 and the third outer line OL3 are separated from the other portions, thereby obtaining a bag container package A1. Fig. 27 and Fig.28 This is a main part plan view showing a part in the x direction of the blank sheet 10, the first structure sheet 150, and the second structure sheet 160. The blank sheet 10, the first structure sheet 150, and the second structure sheet 160 shown in the figure are of a size capable of forming one bag container package A1.

[0134] <Packaging for bag container A1>

[0135] like Figure 30 to Figure 33 As shown, the bag container package A1 includes a first main body sheet 11, a second main body sheet 12, a top side sheet 13, a bottom gusset sheet 14, a first structural sheet 15, and a second structural sheet 16, and is provided with a bag spout 7. In addition, a sealing portion 3, a structural sealing portion 4, a filling material sealing portion 5, and a content storage portion 6 are formed in the bag container package A1.

[0136] The first main body sheet 11 includes a first main region 111 and a first sub-region 112 which are divided by a first boundary line 113 . The second main body sheet 12 includes a second main region 121 and a second sub-region 122 which are divided by a second boundary line 123 .

[0137] The first structure sheet 15 includes a first main region 151 and a first sub-region 152 divided by a first boundary line 153 , a second main region 154 and a second sub-region 155 divided by a second boundary line 156 , a top region 157 , and a bottom region 158 .

[0138] The second structure sheet 16 includes a first main region 161 and a first sub-region 162 divided by a first boundary line 163 , a second main region 164 and a second sub-region 165 divided by a second boundary line 166 , a top region 167 , and a bottom region 168 .

[0139] The sealing part 3 includes a pair of side sealing parts 31 and a top sealing part 32. In the sealing part 3, the first main body sheet 11, the second main body sheet 12, the top side sheet 13, the bottom gusset sheet 14, the first structural sheet 15 and the second structural sheet 16 are joined to each other at appropriate locations.

[0140] The structures of the structural sealing part 4 and the filling material sealing part 5 are as described above.

[0141] The content storage section 6 is a portion for storing the content 69 in the bag container package C1 manufactured using the bag container package A1. The content storage section 6 is a space surrounded by the first main body sheet 11, the second main body sheet 12, and the inner surface of the bottom gusset sheet 14. The bag spout 7 leads to the content storage section 6.

[0142] <Bag container B1>

[0143] Figure 34 to Figure 36 The manufacture of the bag container B1 using the bag container packaging member A1 is shown. Fig.34 As shown, a filling material 59 is filled into the filling material sealing part 5 from the filling port 58 using, for example, a nozzle or the like. As the filling material 59, a fluid selected from a gas such as nitrogen, air, water, an aqueous solution, and an oil agent can be preferably used. In addition, a powder, a resin, a foaming material, etc. can also be used. In addition, the above-mentioned fluid, powder, etc. can be appropriately mixed and then filled into the filling material sealing part 5. As these filling materials, gases such as nitrogen and air are more preferred from the perspective of ease of filling and light weight.

[0144] When air is used as the filling material 59, when air as the filling material 59 is blown in from the filling port 58, the filling material 59 sequentially fills the extended filling agent sealing part 55, the first filling agent sealing part 51, the bottom side filling agent sealing part 54, the second filling agent sealing part 52, and the top side filling agent sealing part 53. By filling the filling material 59, the filling material sealing part 5 becomes inflated and forms a strong structure. Thus, the bag container B1 is completed. In addition, it is preferable that before filling the content 69 described later, as shown in FIG. Fig.36As shown, the sealing of the filling material sealing part 5 and the cutting of the extended structure sealing part 45 and the extended filling agent sealing part 55 are performed in advance. For example, after forming the sealing sealing part 34 in a manner of traversing the top side structure sealing part 43, the first filling agent sealing part 51 and the connecting part of the extended filling agent sealing part 55, the first sub-region 112, the first sub-region 152 and the first sub-region 162 are cut off from the top side sheet 13, the top side region 157 and the top side region 167 in a manner of dividing the sealing sealing part 34.

[0145] <Bag container package C1>

[0146] Fig.37 and Fig.38 The bag container package C1 manufactured using the bag container B1 is shown. In the present manufacturing method, as shown in these figures, the filling of the content 69 is performed. Specifically, the content filling step of filling the content 69 such as various detergents, beverages and foods into the content storage portion 6 through the bag spout 7 is performed. Then, after the steps of closing the bag spout 7 with the cap 73, the bag container package C1 composed of the bag container B1 filled with the filling material 59 and the content 69 is obtained.

[0147] Furthermore, unlike the present embodiment, a content filling step of filling the content storage portion 6 of the bag container package A1 with the content 69 may be performed, and after the content filling step, a filling material sealing step of filling the filling material sealing portion 5 with the filling material 59 may be performed, thereby manufacturing the bag container package C1.

[0148] Next, a method for manufacturing the bag container package A1 and the operation of the bag container package manufacturing apparatus S1 will be described.

[0149] According to the present embodiment, the first cutting step P11 is performed after the first folding step P9, and then the second cutting step P14 is performed after the second folding step P12. Fig.14 As shown, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 are in a state along the z direction as a whole. Fig.13 As shown in FIG. 1 , the first cutting line CL1 can be cut along the shape crossing the first boundary line 1130. In addition, in the second cutting step P14, as shown in FIG. Figure 20 to Figure 22As shown, it is possible to cut along the second cutting line CL2 that crosses the first boundary line 1130 and intersects with the first outline line OL1. As a result, after the second cutting step P14 is completed, the top side sheet 13 can be singulated from the top side sheet 130. That is, when a plurality of bag container packages A1 are continuously manufactured, the outline of the top side sheet 13 is completed when the second cutting step P14 is completed. However, the first main body sheet 110 and the second main body sheet 120 are still in a connected state in the x direction. Therefore, when the first main body sheet 110 and the second main body sheet 120 are singulated in the subsequent process, it is not necessary to cut the top side sheet 130. Therefore, the degree of freedom of the shape of the top side sheet 13 can be further improved.

[0150] In the present embodiment, the first cutting line CL1 (first outline OL1) and the second cutting line CL2 (second outline OL2) are formed to cross obliquely at or near the first boundary line 1130. As a result, the two ends of the top side sheet 13 in the x direction can be formed into a shape having, for example, an acute angle, rather than a shape having a right angle with respect to the x direction. In addition, in the first cutting step P11 and the second cutting step P14, the intersection of the first cutting line CL1 (first outline OL1) and the second cutting line CL2 (second outline OL2) overlaps with the top side sealing portion 320. Therefore, it is not necessary to seal the two ends of the top side sheet 13 in the x direction that are singulated by the second cutting step P14 again by heat sealing.

[0151] By performing the third cutting step P15 after the second cutting step P14, at the time point when the second cutting step P14 is completed, the first main body sheet 110 and the second main body sheet 120 are still in a connected state in the x direction, and although the top side sheet 13 is separated into pieces, it is still fixed to the first main body sheet 110 and the second main body sheet 120. Therefore, until the third cutting portion U15 in which the third cutting step P15 is performed, the long strip-shaped blank sheet 10, the first structural sheet 150 and the second structural sheet 160 can be properly transported along the x direction by pulling the end portions of the first main body sheet 110 and the second main body sheet 120 on the side of the traveling direction in the x direction. This has the advantage of being able to omit a complicated sheet holding mechanism. In addition, in the present embodiment, as described in accordance with Fig.24 , Fig.25 and Fig.29 As can be understood, the third cutting line CL3 is smoothly connected to the second outer line OL2. Thus, it is possible to avoid the occurrence of an unexpected corner or the like at the boundary between the second outer line OL2 and the third outer line OL3 in the bag container package A1.

[0152] In addition, in this embodiment, if Figure 24 to Figure 26As shown, when the third cutting step P15 is performed, the blank sheet 10, the first structure sheet 150 and the second structure sheet 160 are cut along the third cutting line CL3 while being clamped by a pair of clamping parts 91 of the conveying part U21 in a manner straddling the second outer line OL2. Therefore, after the third outer line OL3 is formed, the portion divided by the first outer line OL1, the second outer line OL2 and the third outer line OL3 is separated into pieces but is still clamped by the pair of clamping parts 91. Therefore, it is possible to avoid the separated portion (bag container package A1) from accidentally falling when the third cutting step P15 is completed. In addition, after moving to, for example, a product storage portion set on the downstream side of the third cutting part U15 in the x direction, the bag container package A1 manufactured in sequence can be appropriately stored by releasing the clamping of the pair of clamping parts 91.

[0153] like Fig. 22 As shown in FIG. 1 , the second reinforced seal portion 392 intersects the second cutting line CL2 but does not reach the first outer line OL1. Therefore, in the second point sealing step P13 for forming the second reinforced seal portion 392, even if a part of the sealing film layer is melted by heat sealing and is squeezed and expanded, the melted part can be prevented from leaking from the first outer line OL1 to the outside. In addition, the second reinforced seal portion 392 reliably reaches the second outer line OL2, so the seal portion strength near the intersection of the first outer line OL1 and the second outer line OL2 can be reliably improved.

[0154] like Figure 34 to Figure 38 As shown, the bag container B1 formed using the bag container package A1 is provided with a filling material sealing portion 5 filled with a filling material 59. Thus, even when the contents 69 in the bag container package C1 are reduced due to the use of the contents 69, the outer shape of the bag container B1 can be maintained and the bag container B1 can be kept in a self-supporting shape.

[0155] The bag container package manufacturing method and bag container package manufacturing apparatus S1 of this embodiment can efficiently and reliably manufacture using the first structure sheet 150 and the second structure sheet 160 in addition to the blank sheet 10. The first reinforcing seal portion 391 and the second reinforcing seal portion 392 are preferably provided for improving the sealing strength.

[0156] The method and apparatus for manufacturing a bag container package of the present invention are not limited to the above-mentioned embodiment. The specific structure of the method and apparatus for manufacturing a bag container package of the present invention can be freely changed in various designs.

Claims

1. A method for manufacturing a packaging member for a bag container, characterized in that: Using a first main body sheet and a second main body sheet facing each other in a first direction and a top side sheet arranged on the top side of the first main body sheet and the second main body sheet in a second direction orthogonal to the first direction, Carry out the following process: a sheet joining step of joining a first main region of the first main sheet and a second main region of the second main sheet at a pair of side sealing portions spaced apart from each other in a third direction orthogonal to both the first direction and the second direction, and joining a first sub-region of the first main sheet located at a top side in the second direction relative to the first main region, a second sub-region of the second main sheet located at a top side in the second direction relative to the second main region, and the top sheet at a top side sealing portion; a first folding step of concavely folding a first boundary line between the first main region and the first sub-region so that the first main region and the first sub-region are in an overlapping state; A first cutting step of cutting the top sheet, the second sub-region, the first main region, and the second main region along a first cutting line that exceeds the first boundary line at the bottom side of the second direction from the overlapping portion of the top sheet and the second sub-region; a second folding step of concavely folding a second boundary line between the second main region and the second sub-region so that the second main region and the second sub-region are in an overlapping state; and The second cutting process cuts the top side sheet, the first sub-region, the first main region and the second main region along a second cutting line that exceeds the second boundary line at the bottom side of the second direction and intersects the first outline line formed in the first cutting process, thereby forming a top side sheet from the top side sheet.

2. The method for manufacturing a bag container packaging according to claim 1, wherein: It also includes a third cutting process, after the second cutting process, the first main area and the second main area are cut along a pair of third cutting lines, so that the first main body sheet is formed by the first main body sheet, and the second main body sheet is formed by the second main body sheet, and the pair of third cutting lines reaches the second outline formed in the second cutting process and the bottom side ends of the first main area and the second main area in the second direction.

3. The method for manufacturing a bag container packaging according to claim 2, wherein: In the third cutting step, the third cutting line is smoothly connected to the second outer shape line formed by cutting along the second cutting line in the second cutting step.

4. The method for manufacturing a bag container packaging according to any one of claims 1 to 3, characterized in that: The first main body sheet, the second main body sheet, and the top sheet form one blank sheet.

5. The method for manufacturing a bag container packaging according to any one of claims 1 to 3, characterized in that: The method further includes the step of preparing a laminated sheet of a first structural sheet and a second structural sheet having a filling material filled portion formed therein before the sheet joining step, wherein the filling material filled portion is a joined area for enclosing a filling material, In the sheet joining step, the first structural sheet and the second structural sheet are joined to the outer sides of the first main body sheet, the second main body sheet, and the top sheet. In the first folding step, the first cutting step, the second folding step, and the second cutting step, the first structural sheet and the second structural sheet are folded and cut together with the first main body sheet, the second main body sheet, and the top side sheet.

6. A packaging manufacturing device for a bag container, characterized in that: Using a first main body sheet and a second main body sheet facing each other in a first direction and a top side sheet arranged on the top side of the first main body sheet and the second main body sheet in a second direction orthogonal to the first direction, The bag container packaging manufacturing device comprises: The sheet joining portion joins the first main region of the first main sheet and the second main region of the second main sheet at a pair of side sealing portions spaced apart from each other in a third direction orthogonal to both the first direction and the second direction, and joins the first sub-region of the first main sheet located at the top side in the second direction relative to the first main region, the second sub-region of the second main sheet located at the top side in the second direction relative to the second main region, and the top sheet at the top side sealing portion; a first folding portion, which makes the first main region and the first sub-region overlap by concavely folding a first boundary line between the first main region and the first sub-region; A first cutting portion cuts the top sheet, the second sub-region, the first main region, and the second main region along a first cutting line that exceeds the first boundary line at the bottom side of the second direction from the overlapping portion of the top sheet and the second sub-region; a second folding portion, which is formed by concavely folding a second boundary line between the second main region and the second sub-region so that the second main region and the second sub-region are in an overlapping state; and The second cutting portion cuts the top side sheet, the first sub-region, the first main region and the second main region along a second cutting line that exceeds the second boundary line at the bottom side of the second direction and intersects the first outline line formed in the first cutting portion, thereby forming a top side sheet from the top side sheet.

7. The bag container packaging manufacturing device according to claim 6, characterized in that: It also includes a third cutting portion, which cuts the first main area and the second main area along a pair of third cutting lines, so that the first main body sheet is formed by the first main body sheet, and the second main body sheet is formed by the second main body sheet, and the pair of third cutting lines reaches the second outline formed in the second cutting portion and the bottom side end of the first main area and the second main area in the second direction.

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