Film piece joining apparatus, film manufacturing apparatus, and bag-shaped container manufacturing apparatus

Abstract

To accelerate a manufacturing process by concurrently carrying out the process of conveying a film piece and the process of joining the film piece to a resin member.SOLUTION: The film piece joint machine includes: first conveying means for conveying a resin member in a first direction; second conveying means for conveying a film piece in a second direction crossing the first direction; and joining means capable of joining the film piece held by the second conveying means by pressing the film piece against a resin member held opposite to the film piece by the first conveying means.SELECTED DRAWING: Figure 5

Description

Technical Field

[0004]

[0001] The present invention relates to a bonding device for film pieces, a film manufacturing device and A manufacturing device for a bag-shaped container Place and related thereto.

Background Art

[0002] Conventionally, in a bag-shaped container for packaging drugs, foods, etc., various bags in which a zipper tape is joined to a bag body made of a film are known. In such a bag with a zipper tape, for example, as described in Patent Document 1, one film is pasted on the back and joined in a direction orthogonal to the pasting direction to form a bag body, and a reclosable fastener is joined to the front wall of the bag body, which faces each other. Among the front wall and the rear wall, there is one in which a pull-out plug or a thread for opening is attached near the fastener on the front wall.

[0003] In the technique described in Patent Document 1 above, in order to form a pull-out plug, a plurality of holes are provided in the front wall by a punching mechanism, and the airtightness of the bag may be reduced due to these holes. In addition, although it is also disclosed that a thread is provided on the inner surface of the front wall for opening, there is no disclosure of a specific method for exposing the end of this thread to the outside to form a tab. Usually, in order to make the end of the thread function as a tab, it is conceivable to form a hole in the front wall through which the thread penetrates the film of the bag body, but in this case as well, the airtightness of the bag may be reduced due to the hole.

[0004] In view of this point, Patent Document 2 proposes a bag, a film, and a method for manufacturing a bag that can obtain high airtightness. Specifically, the bag includes a bag body that forms a storage space, a long member provided on one surface of the film that constitutes the bag body and including a slit strip piece and a base strip piece, and a tab whose outer edge is formed by a cutting line that penetrates the base strip piece and the film. The base strip piece is provided between the other surface of the film and the slit strip piece along the longitudinal direction of the slit strip piece. A protective member that covers the tab is provided on the film on the side where the base strip piece is provided.

Prior Art Documents

[0005] [Patent Document 1] Special Publication No. 11-510461 [Patent Document 2] Japanese Patent Publication No. 2018-188196 [Overview of the project] [Problems that the invention aims to solve]

[0006] According to the technology described in Patent Document 2, communication between the storage space and the external space through the cut line of the tab is prevented by the protective member, thus making it possible to easily open the bag with the tear strip and tab while maintaining the airtightness of the bag. Patent Document 2 describes a process in which a film piece punched into a predetermined shape is held and transported with a suction cup, placed in a predetermined position, and then joined to a long member and film by heat sealing or the like to form a protective member. However, in this case, three steps are required: transporting the film piece, placing it, and joining it, making it difficult to speed up the manufacturing process.

[0007] Therefore, the present invention provides a film piece joining apparatus and a film manufacturing apparatus that can speed up the manufacturing process by performing the process of conveying film pieces and the process of joining film pieces to a resin member in parallel. and Manufacturing equipment for bag-shaped containers Place The purpose is to provide it. [Means for solving the problem]

[0008] [1] A film piece joining device comprising: a first conveying means for conveying a resin member in a first direction; a second conveying means for conveying a film piece in a second direction intersecting the first direction; and a joining means capable of joining the film piece, which is held by the second conveying means, by pressing it against the resin member, which is held opposite to the film piece, by the first conveying means. [2] The film piece joining apparatus according to [1], wherein the resin member is elongated overall, the first direction is the longitudinal direction of the resin member, and the joining means sequentially joins a plurality of film pieces, which are sequentially conveyed by the second conveying means, to a plurality of positions in the longitudinal direction of the resin member. [3] The film piece joining apparatus according to [2], wherein the second transport means includes a plurality of transport paths. [4] The film piece joining device according to [3], wherein the second conveying means includes conveying means for gripping the film piece and forming a first conveying path, and conveying means for gripping the film piece and forming a second conveying path, and further comprises a support base disposed between the first conveying means and the second conveying means for supporting the end of the film piece opposite to the end gripped by the conveying means forming the first conveying path or the second conveying path, respectively. [5] A film piece joining device according to [3] or [4], further comprising a cutting means for cutting the film piece from a roll of film, wherein the second conveying means is movable between a plurality of positions where the film piece cut by the cutting means is supplied to each of the plurality of conveying paths. [6] The film piece joining apparatus according to [3] or [4], further comprising: a cutting means for cutting the film piece from the roll of film; and a sorting means for sorting the film piece cut by the cutting means into one of the plurality of transport paths. [7] The film piece joining device according to any one of [1] to [6], wherein the second conveying means includes a pair of belts arranged adjacent to each other and holding the film piece, and at least one of the pair of belts is made of a magnetic material. [8] The joining means comprises a heat sealing device or an ultrasonic sealing device, the joining device for film pieces according to any one of [1] to [7]. A film manufacturing apparatus comprising a film piece joining device according to any one of items [9][1] to [8], wherein the resin member comprises a long film and a long member joined to the film and extending in the width direction of the film, the long member has a notch formed therein, and the joining means joins the film piece to a region of the resin member that covers the notch. A manufacturing apparatus for bag-shaped containers, comprising a film manufacturing apparatus as described in

[10] [9], further comprising a bag-making mechanism for forming the film into a bag shape.

[11] A method for joining film pieces, comprising: a first transport step of transporting a resin member in a first direction; a second transport step of transporting a film piece in a second direction intersecting the first direction; and a joining step of pressing the film piece, which has been held after transport in the second direction, against the resin member facing the film piece in a direction perpendicular to the first and second directions.

[12] The method for joining film pieces according to

[11] , wherein the resin member is elongated overall, the first direction is the longitudinal direction of the resin member, in the second transport step, a plurality of the film pieces are sequentially transported in the second direction, and in the joining step, they are sequentially joined at a plurality of positions in the longitudinal direction of the resin member.

[13] The method for joining film pieces according to

[12] , wherein in the second transport step, the plurality of film pieces are transported by one of the plurality of transport paths.

[14] The method for joining film pieces according to

[13] , further comprising a cutting step of cutting the film pieces from a roll of film, wherein in the second transport step, a transport device constituting the plurality of transport paths is moved to supply the cut film pieces to any of the plurality of transport paths.

[15] The method for joining film pieces according to

[13] , further comprising a cutting step of cutting the film pieces from a roll of film and a sorting step of sorting the cut film pieces into any of the plurality of transport paths.

[16] The method for joining film pieces according to any one of

[11] to

[15] , wherein the joining step includes a step of heat sealing or ultrasonically sealing the film piece to the resin member. A method for manufacturing a film, comprising the step of a method for joining film pieces as described in any one of

[17] ,

[11] to

[16] , wherein the resin member comprises a long film and a long member joined to the film and extending in the width direction of the film, a notch is formed in the long member, and in the joining step, the film piece is joined to a region of the resin member that covers the notch. A method for manufacturing a bag-shaped container, comprising the steps of the film manufacturing method described in

[18]

[17] , further comprising the step of forming the film into a bag shape. [Effects of the Invention]

[0009] According to the above configuration, the resin member and the film piece are transported in directions that intersect each other, and the film piece is held by the transport means and pressed against the resin member to be joined. This allows the process of transporting the film piece and the process of joining the film piece to the resin member to be carried out in parallel, thereby speeding up the manufacturing process. [Brief explanation of the drawing]

[0010] [Figure 1] This is a plan view of a bag-shaped container according to one embodiment of the present invention. [Figure 2] This is the first example of the cross-sectional view along line II-II in Figure 1. [Figure 3] This is a second example of the cross-sectional view along line II-II in Figure 1. [Figure 4] This diagram schematically shows the manufacturing process of the bag-shaped container shown in Figure 1. [Figure 5] This figure shows the mounting section for the protective member of the manufacturing apparatus shown in Figure 4. [Figure 6] This is a view along the line VI-VI in Figure 5. [Figure 7] This figure shows the device in Figure 5 with some of its components moved. [Figure 8] It is a figure which shows another example of the protection member attachment part of the manufacturing apparatus shown in FIG. 4. [Figure 9] It is a cross-sectional view taken along the line IX-IX of FIG. 8.

Mode for Carrying Out the Invention

[0011] FIG. 1 is a plan view of a bag-shaped container in an embodiment of the present invention. In the illustrated example, the bag-shaped container 100 includes a film 110 that forms a bag body and has a first surface 111A and a second surface 111B facing each other, a long member 120 joined to the first surface 111A of the film 110, and a protection member 140. The long member 120 includes a base strip 121 and a slit strip 122, and a tab 130 is formed around one end in the longitudinal direction of the long member 120.

[0012] The film 110 is composed of, for example, a single-layer or multi-layer thermoplastic resin film. The thermoplastic resin may specifically be low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), or polypropylene (PP). PP may be homopolypropylene (HPP), random polypropylene (RPP), or block polypropylene (BPP). When the film 110 is composed of a multi-layer film, biaxially stretched polypropylene (OPP), biaxially stretched polyethylene terephthalate (OPET), or biaxially stretched nylon (ONy) may be used for the surface base material. Further, the film constituting the film 110 may include a layer of a metal material such as aluminum or a layer of an inorganic material. Also, a resin film containing any amount of biodegradable plastics such as biodegradable polyethylene can be used.

[0013] In this embodiment, the film 110 is folded back at predetermined positions from both ends, and the folded ends are linearly joined with linear sealing portions 112 to form the first surface 111A and the second surface 111B. The upper and lower ends of the bag body are sealed with sealing portions 113 and 114, respectively. Note that, for example, if the contents are filled after the bag-shaped container 100 is completed, at least one of the sealing portions 113 and 114 may not be formed.

[0014] The elongated member 120 includes a base strip 121 and a tear strip 122 made of a different material from the base strip 121, and is joined to the first surface 111A of the film 110 that constitutes the container body. The tab 130 is formed by the base strip 121 and tear strip 122 of the elongated member 120, and by a cut, for example, in the shape of a C, that penetrates the first surface 111A of the film 110. When opening, the user can open the bag-shaped container 100 by pulling the tear strip 122 starting from the tab 130 and tearing the first surface 111A of the film 110 with the tear strip 122. In this embodiment, the tab 130 is formed around one end of the elongated member 120 in the longitudinal direction.

[0015] Here, for example, as shown in the cross-sectional view in Figure 2, the elongated member 120 may further include opposing base strips 123 and engaging portions 124A and 124B that protrude from the base strip 121 and opposing base strip 123, respectively, and engage with each other, thereby forming a zipper tape. Although a pair of male and female engaging portions 124A and 124B are shown, the design is not limited to this example, and various known shapes of zipper tape engaging portions, such as claw-shaped, hook-shaped, or knob-shaped, can be adopted. Furthermore, two or more pairs of engaging portions may be formed. In this case, one or more pairs of engaging portions with different shapes (e.g., male and female and hook-shaped) may be arranged, or two or more pairs of engaging portions with the same shape (e.g., male and female) may be arranged. Alternatively, as shown in the cross-sectional view in Figure 3, the elongated member 120 may include a single base strip 121 and constitute a simple tape that is not a zipper tape.

[0016] In the long member 120 described above, the base strip 121 is formed, for example, by extrusion molding of a polyolefin resin. More specifically, the base strip 121 may be formed of low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE), or polypropylene (PP). The PP may be homopolypropylene (HPP), random polypropylene (RPP), or block polypropylene (BPP). These may be environmentally friendly bioplastics, or a mixture of fossil fuel-derived resin and biomass plastics such as biopolyethylene may be used. Known additives, such as stabilizers, antioxidants, lubricants, antistatic agents, or colorants, may be added to the material of the base strip 121 as needed.

[0017] On the other hand, the tear strips 122 are formed, like the base strips 121, for example, by extrusion molding of a polyolefin resin. By forming the tear strips 122 with a resin that has low compatibility with the resin forming the base strips 121, the base strips 121 and the tear strips 122 can be interfacially delaminated at the joint surface. For this purpose, for example, one of the base strips 121 or the tear strips 122 may be formed from a low-density polyethylene resin, and the other from a random polypropylene resin. Specifically, examples of combinations include low-density polyethylene (LDPE) / random polypropylene (RPP), linear low-density polyethylene (LLDPE) / RPP (including some m-LL), LDPE / homopolypropylene (HPP), LLDPE / HPP (including some m-LL), LDPE / polystyrene (PS), LLDPE / PS (including m-LL), RPP / PS, HPP / PS, LDPE / polyethylene terephthalate (PET), LLDPE / PET, RPP / PET, HPP / PET, PS / PET, LDPE / nylon (Ny), LLDPE / Ny, RPP / Ny, HPP / Ny, or PS / Ny.

[0018] The protective member 140 is positioned to cover the area where the notch of the tab 130 is formed from the inside of the container body and is joined to the elongated member 120. The protective member 140 may extend beyond the elongated member 120 and be joined to the first surface 111A of the film 110 as well. The protective member 140 seals the space leading to the notch of the tab 130 on the inside of the container body, improving the airtightness of the bag-shaped container 100 before it is opened using the tear strip 122. The protective member 140 is formed of the same material as the film 110 described above, for example. Of the materials described above, it is possible to select different materials for the protective member 140 and the film 110, but it is more preferable to select the same material for the protective member 140 and the film 110.

[0019] Furthermore, in the bag-shaped container 100, a notch 131 may be formed at a different location from the tab 130, for example, around the other end of the elongated member 120 on the opposite side from where the tab 130 is formed, penetrating at least the first surface 111A of the film 110 and the tear strip 122. By forming the notch 131, the endpoint of the tear in the first surface 111A by the tear strip 122 can be easily formed. The notch 131 may be formed to penetrate, for example, the base strip 121 of the elongated member 120 in addition to the first surface 111A and the tear strip 122. In this case, by arranging the protective member 141 to cover the area where the notch 131 is formed from the inside of the container body and joining it to the elongated member 120, the airtightness of the bag-shaped container 100 before it is opened using the tear strip 122 can be improved. The protective member 141 may be joined not only to the long member 120 but also to the first surface 111A, similar to the protective member 140 described above. Alternatively, the notch 131 may be formed to penetrate the first surface 111A and the tear strip 122, but not to penetrate the base strip 121. In this case, since the space leading to the notch 131 does not reach the inside of the container body, the protective member 141 may not necessarily be placed.

[0020] Figure 4 is a schematic diagram illustrating the manufacturing process of the bag-shaped container shown in Figure 1. In the illustrated example, the manufacturing apparatus 500 includes a long member attachment section 510, a tab forming section 520, a protective member attachment section 530, a bag body forming section 540, and a top / bottom forming section 550. The specific configurations of each section will be described below. In the manufacturing apparatus 500, the long film 110 drawn from a roll (not shown) is processed in each of the above sections while being conveyed intermittently. Each section will be described further below.

[0021] The elongated member attachment section 510 joins the elongated member 120, which extends in the width direction of the film 110, to the film 110 being conveyed in the longitudinal direction. The elongated member 120 includes the base strip 121 and the tearing strip 122 shown in Figure 1. Since these members are all elongated members extending in the same direction, they can be pre-formed, for example by extrusion molding (including co-extrusion molding), and then joined together to the film 110 as the elongated member 120. In this case, the manufacturing process further includes a step of integrally forming the base strip 121 and the tearing strip 122, for example by co-extrusion molding, but this step is carried out by a molding device such as an extrusion molding machine included in the manufacturing apparatus 500, or provided separately from the manufacturing apparatus 500.

[0022] Specifically, the long member mounting section 510 includes a feeder 511, a support base 512A, and a sealing bar 512B. The feeder 511 feeds out a long member 120 of a predetermined length and places it in a predetermined position on the film 110. The feeder 511 may also include a cutter for cutting out the long member 120. The support base 512A and sealing bar 512B sandwich the film 110 together with the long member 120 and join the long member 120 to the film 110 by heat sealing or ultrasonic sealing. Alternatively, an adhesive may be applied in advance between the long member 120 and the film 110, and the support base 512A and sealing bar 512B may join the overlapping film 110 and long member 120 by sandwiching and pressing them together. The support base 512A is made of, for example, silicone.

[0023] The tab-forming section 520 forms tabs 130 on the film 110 and the elongated member 120 joined to the film 110. Specifically, the tab-forming section 520 includes a cutter 521 and a support base 522. The cutter 521 has a planar shape (not shown) corresponding to the cuts that form the tabs 130. In this embodiment, since the tabs 130 are formed by C-shaped cuts, the cutter 521 also has a C-shaped planar shape. At this stage, the film 110 has not yet been folded back, so the tabs 130 can be formed by the cutter 521 cutting through the film 110 and the elongated member 120 in the thickness direction.

[0024] The protective member mounting portion 530 joins the protective member 140 to the area on the elongated member 120 that covers the notch of the tab 130. The detailed configuration of the protective member mounting portion 530, including areas not shown in Figure 4, will be described later.

[0025] The bag body forming section 540, together with the top / bottom forming section 550, constitutes a bag-making mechanism for forming the film 110 into a bag shape. Specifically, the bag body forming section 540 includes a winding core 541, a conveyor belt 542, and a sealing device 543. The film 110 is conveyed from top to bottom by the conveyor belt 542 while being wound around the winding core 541. Because the winding core 541 has a substantially circular cross-section at its upper part, the film 110 can be smoothly wound into a cylindrical shape. The cylindrically wound film 110 is folded back on both sides in the width direction, thereby forming the first surface 111A and the second surface 111B as described above with reference to Figure 1. The area to which the long member 120 is joined becomes the first surface 111A. The sealing device 543 forms a sealed section 112 by joining both ends of the wound film 110 in the width direction. The area to which the sealed section 112 is formed becomes the second surface 111B. The sealing device 543 forms the sealing portion 112 by a method such as heat sealing, similar to the receiving base 512A and sealing bar 512B described above.

[0026] The top / bottom forming section 550 forms a bag-shaped container 100 by forming sealing portions 113 and 114 on the film 110 which is folded back on both sides in the width direction, and by cutting the film 110 in the width direction. The top / bottom forming section 550 includes sealing bars 551A, 551B, a cutter 552, and a support base 553. The sealing bars 551A and 551B face each other on the upper and lower sides with the cutter 552 in between, and these opposing portions form the sealing portions 113 and 114 on the film 110. The sealing bars 551A and 551B form the sealing portions 113 and 114 by a method such as heat sealing, similar to the support base 512A and sealing bar 512B described above. The cutter 552 moves toward and away from the support base 553, cutting the film 110 in the width direction near the sealing portions 113 and 114.

[0027] Here, the aforementioned core 541 is hollow, and a filling device 601 is inserted into it from above. The filling device 601 discharges the contents in synchronization with the sealing bars 551A and 551B clamping the film 110 at the top / bottom forming section 550. This allows the contents to be filled into the storage space formed above the sealing section 114 located at the bottom of the bag-shaped container 100. When the sealing bars 551A and 551B separate, the contents are transported downward along with the film 110, passing over the sealing bars 551A and 551B, and then the storage space is sealed when the sealing section 113 is formed at the top of the bag-shaped container 100.

[0028] The bag-shaped container 100 can be manufactured by the manufacturing process described above. Note that the above process is just one example, and various modifications are possible. For example, after the film 110 has completed the process up to the protective member attachment section 530, it may be wound onto a roll or the like again for transport and storage, and then the film 110 may be pulled out from the roll and the process from the bag body forming section 540 may be carried out. In this case, the manufacturing process of the film with the long member and the manufacturing process of the bag-shaped container using the film with the long member will be carried out separately.

[0029] Figures 5 to 7 show the protective member mounting section of the manufacturing apparatus shown in Figure 4. Figure 6 is a view along the line VI-VI in Figure 5, and Figure 7 shows the apparatus of Figure 5 with some components moved. In the illustrated example, the protective member mounting section 530 includes a raw material roll 531, a dancer roll 532A, a feed roll 532B, a cutter 533, a rotary actuator 534, SUS belts 535A, 535B, 535C, 535D, feed servo motors 536A, 536B, a magnet hold 537, a support base 538, a heat sealing device 539A, and a support base 539B. The protective member mounting section 530 is a film piece joining device that, as described below, cuts out a film piece 140A to become the protective member 140, and transports it using SUS belts 535A, 535B, 535C, and 535D, which are transport means, in a direction (y direction in the figure) intersecting the transport direction of the film 110 (x direction in the figure). The film piece 140A held by the transport means is then sandwiched between the heat sealing device 539A and the support base 539B to join it to the long member 120. Each part will be described further below.

[0030] The raw material roll 531 is rotated by the motor 531A and feeds out the raw material film 531B at a predetermined speed. The raw material roll 531 may feed out the raw material film 531B continuously or intermittently. The fed raw material film 531B has its tension adjusted by the dancer roll 532A, its transport speed adjusted by the feed roll 532B, and is then cut to a predetermined length by the cutter 533. This cuts out film pieces 140A from the raw material film 531B. The cut film pieces 140A are held by holding means such as clamps provided on the rotary actuator 534 and are sandwiched between SUS belts 535A, 535B or SUS belts 535C, 535D as the rotary actuator 534 rotates. As shown in Figure 7, the transport path for supplying the film piece 140A can be switched between the path of SUS belts 535A, 535B and the path of SUS belts 535C, 535D by moving the portion including SUS belts 535A, 535B and SUS belts 535C, 535D. In the illustrated example, the portion including SUS belts 535A, 535B and SUS belts 535C, 535D is movable between multiple positions in a direction perpendicular to the transport direction of the film piece 140A, that is, in the transport direction (x direction) of the film 110.

[0031] The SUS belts 535A and 535B are a pair of endless belts whose surfaces are covered with SUS (Steel Use Stainless), and are driven synchronously by the rotation of the feed servo motor 536A to transport the film piece 140A in a direction (y direction) intersecting the transport direction (x direction) of the film 110. In this example, the film piece 140A is sandwiched between the SUS belts 535A and 535B. The SUS belts 535A and 535B may be driven, for example, continuously or intermittently. The SUS belts 535C and 535D are also a pair of endless belts made of stainless steel, and are driven by the feed servo motor 536B in the same way as the SUS belts 535A and 535B to transport the film piece 140A. As described later, when the film piece 140A is held by attracting the surface of the belt with the magnetic force of the magnet hold 537, the SUS belts 535B and 535D, which are positioned on the opposite side of the magnet hold 537, are made of a magnetic material. The magnetic material is not limited, but from the viewpoint of durability against rust, etc., magnetic SUS is preferred. The SUS belts 535A and 535C, which are positioned on the magnet hold 537 side, do not need to be made of a magnetic material, but from the viewpoint of parts commonality, they may be made of a magnetic material. Also, for the SUS belts 535A and 535C, from the viewpoint of durability against rust, etc., the material is preferably SUS (regardless of whether it is magnetic or not).

[0032] Here, if we consider the film 110 transport means, such as rolls, included in the manufacturing apparatus 500 shown in Figure 4 as the first transport means, then the SUS belts 535A, 535B and SUS belts 535C, 535D are second transport means that transport film pieces 140A in a direction intersecting the transport direction of the film 110 by the first transport means. While the film 110 is transported in its longitudinal direction (x direction) by the first transport means, the multiple film pieces 140A are sequentially transported in a direction intersecting the longitudinal direction of the film 110 (y direction) by the second transport means, and by operating the heat sealing device 539A at an appropriate timing as described later, the film pieces 140A can be sequentially joined to multiple positions in the longitudinal direction of the film 110.

[0033] In the illustrated example, the SUS belts 535A, 535B and SUS belts 535C, 535D are arranged in parallel to form two transport paths. This allows the cut film pieces 140A to be transported along either of the two transport paths by moving the section containing the SUS belts 535A, 535B and SUS belts 535C, 535D, as shown in the illustrated example, and supplying the cut film pieces 140A to any of the SUS belts 535A, 535B and SUS belts 535C, 535D using the rotary actuator 534. This reduces the spacing between the film pieces 140A in the transport direction (y-direction), maximizing the processing speed, i.e., the number of protective members 140 that can be attached per unit of time. The example is not limited to the illustrated example; for example, depending on the required processing speed, there may be only one transport path, or three or more transport paths arranged in parallel may be provided.

[0034] The magnet hold 537 is installed when at least a portion of the SUS belt is made of a magnetic material such as ferritic stainless steel or martensitic stainless steel. The magnet hold 537 is located on the back side of one of the two adjacent SUS belts (SUS belts 535A, 535B or SUS belts 535C, 535D) that sandwich the film piece 140A, and magnetically attracts the other SUS belt that sandwiches the film piece 140A. Specifically, the magnet hold 537 is located inside the loop of the endless belt SUS belt 535A and magnetically attracts the opposite side of the SUS belt 535B. In this case, the SUS belt 535B is made of a magnetic material, regardless of whether the material of the SUS belt 535A is magnetic or not. This allows the film piece 140A to be held more firmly between the SUS belts 535A and 535B, preventing misalignment. The magnet hold 537 may be positioned on the SUS belt 535B side instead of the SUS belt 535A side. In this case, the SUS belt 535A is made of a magnetic material. In the illustrated example, the magnet hold 537 is also positioned inside the loop of either the SUS belt 535C or 535D (SUS belt 535C in the illustrated example). The strength of the magnetic force with which the magnet hold 537 attracts the SUS belt is not particularly limited, as long as it is possible to stably hold the film piece 140A.

[0035] The support base 538 extends in the same direction as the transport direction (y-direction) of the film piece 140A between the SUS belts 535A, 535B and SUS belts 535C, 535D, and supports the end of the film piece 140A opposite to the end held by the SUS belt. For example, if the film piece 140A is soft, the support from the support base 538 prevents the end from sagging, thus preventing the film piece 140A from falling off the SUS belt and avoiding sealing defects due to an unstable positional relationship between the heat sealing device 539A and the film piece 140A. By positioning the support base 538, on which the opposite end of the film piece 140A held by each SUS belt rests, in the middle of the two transport paths, the overall arrangement of the protective member mounting section 530 can be made more compact.

[0036] The heat sealing device 539A is equipped with a heating means, specifically a hot plate or heater (not shown), that heats the surface in contact with the film piece 140A, and is pressed from above against the film piece 140A that has been conveyed by the SUS belts 535A, 535B or SUS belts 535C, 535D. The support base 539B is positioned below the film 110 at a position corresponding to the heat sealing device 539A. At this time, the film 110 is positioned using a film conveying means (first conveying means) such as a roll included in the manufacturing apparatus 500 so that the film piece 140A is pressed against the area that covers the cut of the tab 130 formed on the elongated member 120 joined to the film 110. In this way, the film piece 140A, the elongated member 120 and the film 110 are sandwiched between the heat sealing device 539A and the support base 539B, and the protective member 140 can be joined to the area that covers the cut of the tab 130 as described above.

[0037] As already mentioned, in the illustrated example, there are two transport paths for the film piece 140A, consisting of parallel SUS belts 535A, 535B and SUS belts 535C, 535D. In such a case, separate sets of heat sealing devices 539A and support bases 539B may be provided for the film piece 140A transported by SUS belts 535A, 535B and the film piece 140A transported by SUS belts 535C, 535D, or at least one of the heat sealing devices 539A and support bases 539B may be shared to join the film pieces 140A transported by the two transport paths. In this case, the heat sealing device 539A and the support base 539B may be fixed so that when the part including the SUS belts 535A, 535B and SUS belts 535C, 535D moves to switch the transport path as described above, the position of either the SUS belts 535A, 535B or the SUS belts 535C, 535D will align with the heat sealing device 539A and the support base 539B. Alternatively, the heat sealing device 539A and the support base 539B may move in the transport direction (x direction) of the film 110 and align with the position of either the SUS belts 535A, 535B or the SUS belts 535C, 535D. The same applies when there are three or more transport paths.

[0038] In the example above, a heat sealing device 539A is used as the means of joining the film piece 140A. However, in other examples, an oscillator may be used instead of a heater to join the protective member 140 to the long member 120 by ultrasonic sealing. Alternatively, if adhesive is applied to the film piece or the long member 120 in advance, the joining means simply involves pressing the film piece against the long member 120, and a heater or oscillator is not required. Furthermore, although the example above shows the protective member 140 being joined only to the long member 120, the protective member 140 may also be joined to the film 110 beyond the long member 120.

[0039] To enable the joining of the protective member 140 as described above, as shown in Figure 5, the sealing area 539A1 into which the heat sealing device 539A presses against the film piece 140A is set so as not to overlap with the SUS belts 535A, 535B (or SUS belts 535C, 535D) and the support base 538. This prevents the heat sealing device 539A, which moves up and down to sandwich the film piece 140A between itself and the support base 539B, from interfering with the SUS belts and support base that transport or support the film piece 140A.

[0040] Figures 8 and 9 show another example of the protective member mounting section of the manufacturing apparatus shown in Figure 4. Figure 9 is a view along the line IX-IX in Figure 8. The difference from the example described above with reference to Figures 5 to 7 is that in the examples of Figures 8 and 9, instead of the part including the SUS belts 535A, 535B and SUS belts 535C, 535D moving, the rotary actuator 534 functions as a sorting means that distributes the cut film pieces 140A to either the transport path of the SUS belts 535A, 535B or the transport path of the SUS belts 535C, 535D. Regarding the position in the transport direction of the film pieces 140A transported in the two transport paths of the SUS belts 535A, 535B and SUS belts 535C, 535D, in the example of Figure 5 the positions are aligned in both transport paths, while in the example of Figure 8 the positions are alternating in both transport paths. However, the positional relationship of the film pieces 140A in each transport path is not particularly limited, and for example, they may be transported with a slight shift in position.

[0041] According to one embodiment of this specification as described above, while the film 110 to which the long member 120 is joined is conveyed in the longitudinal direction (x direction), the film piece 140A is conveyed in a direction (y direction) intersecting the conveying direction of the film 110 using SUS belts 535A, 535B, 535C, and 535D. With the film piece 140A held by the SUS belts 535A, 535B, 535C, and 535D, the film piece 140A can be pressed against the long member 120 and the film 110 using a heat sealing device 539A to join them. This makes it possible to carry out the process of conveying the film piece 140A and the process of joining the film piece 140A to resin members such as the film 110 and the long member 120 in parallel, thereby speeding up the manufacturing process. [Explanation of Symbols]

[0042] 100...Bag-shaped container, 110...Film, 111A...First side, 111B...Second side, 112,113,114...Sealing part, 120...Long member, 121...Base strip, 122...Tear strip, 123...Opposite base strip, 124A,124B...Engaging part, 130...Tab, 131...Notch, 140,141...Protective member, 140A...Film piece, 500...Manufacturing device, 510...Long member mounting part, 511...Feeder, 512A...Support base, 512B...Seal bar, 520...Tab forming part, 52 1...Cutter, 522...Support stand, 530...Protective member mounting part, 531...Raw material roll, 531A...Motor, 531B...Raw material film, 532A...Dancer roll, 532B...Feed roll, 533...Cutter, 534...Rotary actuator, 535A, 535B, 535C, 535D...SUS belt, 536A, 536B...Feed servo motor, 537...Magnet hold, 538...Support stand, 539A...Heat sealing device, 539A1...Sealing area, 539B...Support stand 、5 40...Bag body forming section, 541...Core, 542...Conveyor belt, 543...Sealing device, 550...Bottom forming section, 551A...Seal bar, 551B...Seal bar, 552...Cutter, 553...Support stand, 601...Filling device.

Claims

1. A first conveying means for conveying a resin member in a first direction, A second conveying means that grips the end of the film piece and conveys the film piece in a second direction intersecting the first direction, A joining means capable of joining the film piece, which is held by the second transport means, by pressing it against the resin member, which is held opposite to the film piece by the first transport means. Equipped with, The resin member is elongated in shape as a whole. The first direction is the longitudinal direction of the resin member, The joining means sequentially joins the plurality of film pieces, which are sequentially conveyed by the second conveying means, to a plurality of positions in the longitudinal direction of the resin member. The second transport means includes a plurality of transport paths, The second conveying means includes a conveying means that holds the film piece and constitutes a first conveying path, and a conveying means that holds the film piece and constitutes a second conveying path. A film piece joining device further comprising a support base positioned between the first conveying means and the second conveying means, which supports the end of the film piece opposite to the end being held by the conveying means constituting the first conveying path or the second conveying path.

2. A first conveying means for conveying a resin member in a first direction, A second conveying means that grips the end of the film piece and conveys the film piece in a second direction intersecting the first direction, A joining means capable of joining the film piece, which is held by the second transport means, by pressing it against the resin member, which is held opposite to the film piece by the first transport means. Equipped with, The second conveying means includes a pair of belts arranged adjacent to each other and holding the film piece, A film piece joining device wherein at least one of the pair of belts is made of a magnetic material.

3. A film manufacturing apparatus comprising a film piece joining device according to claim 1 or claim 2, The resin member includes a long film and a long member joined to the film and extending in the width direction of the film, and the long member has a notch formed therein. The bonding means is a film manufacturing apparatus that bonds the film piece to the region of the resin member that covers the cutout.

4. A device for manufacturing a bag-shaped container, including the film manufacturing device described in claim 3, An apparatus for manufacturing bag-shaped containers, further comprising a bag-making mechanism for forming the aforementioned film into a bag shape.

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