Apparatus and method for manufacturing storage bag

Abstract

An object of the present invention is to provide an apparatus for manufacturing an accommodating bag and a method for manufacturing an accommodating bag capable of appropriately joining an exterior body.SOLUTION: And a sealing unit provided in a part of the exterior body, sealing the accommodation space after the accommodation object is accommodated in the accommodation space, and including a stacking portion in which the exterior body is stacked in a thickness direction in a central portion, wherein the heat application device includes a gap suppressing portion that suppresses formation of a gap in an end portion of the stacking portion in a region facing the end portion of the stacking portion, and applies heat by sandwiching the sealing portion from above and below to seal the accommodation space.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to a manufacturing apparatus for a storage bag and a manufacturing method for a storage bag. [Background technology]

[0002] Storage bags for storing contents have been developed. The storage bags may have a sealing portion that seals the storage space after storing the contents. For example, Patent Document 1 discloses a sealing device for an absorbent article package that has sealed side portions where four layers of sheet portions are stacked and welded together, and a sealed central portion where two layers of sheet portions are stacked and welded together. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2022-050104 Summary of the Invention [Problem to be solved by the invention]

[0004] The sealed portion may be formed by joining a laminate formed by stacking a plurality of exterior bodies that form the storage space by a joining means such as welding. In this case, there is a risk that the exterior bodies may not be properly joined together at the ends of the laminate.

[0005] An object of the present invention is to provide a manufacturing device for a storage bag that can appropriately join an exterior body and a manufacturing method for a storage bag. [Means for solving the problem]

[0006] An apparatus for manufacturing a storage bag according to one aspect of the present invention comprises: An apparatus for manufacturing a storage bag, the apparatus comprising: an exterior body that forms a storage space for storing an object; and a sealing section that is provided in a part of the exterior body, that seals the storage space after the object is stored in the storage space, and that has a stacking section in the center where the exterior body is stacked in a thickness direction, The device has a gap suppression section in an area facing the end of the stacked section that suppresses gaps from forming at the end of the stacked section, and is equipped with a heat application device that clamps the sealing section from above and below, applies heat, and seals the storage space. [Effects of the Invention]

[0007] According to the present invention, the exterior body can be appropriately joined. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing the appearance of a storage bag manufactured by a storage bag manufacturing apparatus according to an embodiment. [Figure 2] FIG. 2 is a perspective view of a storage bag showing a joining method of the storage bag in the embodiment. [Figure 3] FIG. 3 is a perspective view of the storage bag showing a state in which an exterior body forming the bottom surface portion of the storage bag in the embodiment is stacked. [Figure 4] FIG. 4 is an enlarged view showing a state in which exterior bodies forming the bottom surface portion of the storage bag in the embodiment are stacked. [Figure 5] FIG. 5 is a flowchart showing a method for manufacturing a storage bag according to the embodiment. [Figure 6] FIG. 6 is a schematic diagram showing a part of the configuration of the manufacturing device for a storage bag according to the embodiment. [Figure 7] FIG. 7 is a side view of a heat applying device provided in the manufacturing apparatus for the storage bag according to the embodiment. [Figure 8] FIG. 8 is a front view of a heating device provided in the manufacturing apparatus for the storage bag according to the embodiment. [Figure 9] FIG. 9 is an enlarged view showing a pair of heat seal blocks. [Figure 10] FIG. 10 is an enlarged view showing a heat seal block in the case where a gap suppressing section is disposed near the end of the two-layer section. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following describes an embodiment of the present invention. The embodiment described below is one aspect of the present invention and does not limit the technical scope of the present invention.

[0010] <Embodiment> The storage bag manufactured by the storage bag manufacturing apparatus according to this embodiment is a substantially rectangular bag with four closed sides that can store and remove absorbent articles such as disposable diapers, absorbent pads, or sanitary products. Fig. 1 is a perspective view of the appearance of storage bag 1. As shown in Fig. 1, storage bag 1 has a substantially rectangular parallelepiped appearance when absorbent articles 2, which are the contents, are stored inside.

[0011] The storage bag 1 is formed from a single sheet-like exterior body 10. The front surface of the exterior body 10 is the surface that is exposed to the outside when the storage bag 1 is formed, and the back surface of the exterior body 10 is the surface that becomes the inside when the storage bag 1 is formed. The exterior body 10 according to this embodiment is made of a material that can be melted and bonded together when heat is applied, such as vinyl, or a material in which paper or the like is covered with a layer formed from a material that can be melted and bonded together when heat is applied. The storage bag 1 may be formed from an opaque resin, such as white, and may have a printed surface. The material of the exterior body 10 can be changed as appropriate.

[0012] When the absorbent article 2 is contained in the storage bag 1 and the storage bag 1 is placed on a horizontal surface with its longitudinal direction facing the side, the surface that contacts the horizontal surface is referred to as bottom surface 10D (an example of the "sealed portion" in this application), the surface opposite bottom surface 10D is referred to as upper bottom surface 10U, and the surface connecting bottom surface 10D and upper bottom surface 10U is referred to as side surface 10S. Upper bottom surface 10U may be provided with a handle 10H for carrying the storage bag 1. Hereinafter, the direction connecting bottom surface 10D and upper bottom surface 10U when the storage bag 1 is placed on a horizontal surface is referred to as the height direction of the storage bag 1.

[0013] Exterior body 10 has a generally rectangular cylindrical shape, and the two open ends of exterior body 10 are joined to form bottom surface portion 10D and upper bottom surface portion 10U, thereby sealing the storage space surrounded by the back surface of exterior body 10.

[0014] The upper bottom surface portion 10U is formed by joining the exterior bodies 10 together at one open end of the exterior bodies 10. The upper bottom surface portion 10U is joined so as to make the storage space of the storage bag 1 sealable when the absorbent article 2 is housed in the storage space. A publicly known technique can be used as a sealing joining method.

[0015] Fig. 2 is a diagram showing a method for joining the opening end 10M that forms the bottom surface portion 10D. Fig. 2(A) is a perspective view of the storage bag 1 showing a state in which the upper bottom surface portion 10U has been formed. Fig. 2(B) is a perspective view of the storage bag 1 showing a state in which the opening end 10M is folded. Fig. 3 is a perspective view of the storage bag 1 showing a state in which the exterior bodies 10 that form the bottom surface portion 10D have been stacked.

[0016] The upper bottom surface portion 10U is formed when the storage bag 1 is placed so that one of the side surfaces 10S of the storage bag 1 faces a horizontal plane. Then, as shown in Fig. 2(A), a plurality of absorbent articles 2 are placed into the storage space of the storage bag 1 from an opening end 10M opposite to the upper bottom surface portion 10U, which opens in a substantially rectangular shape. Note that the storage bag 1 may be placed so that one of the side surfaces 10S of the storage bag 1 faces a horizontal plane after the upper bottom surface portion 10U is formed.

[0017] The bottom surface portion 10D is formed by joining the exterior bodies 10 at the opening end 10M while the absorbent article 2 is housed in the storage space. The opening end 10M is composed of a pair of sides 3XU, 3XD and a pair of sides 3YL, 3YR perpendicular to the pair of sides 3XU, 3XD. With one of the side portions 10S of the storage bag 1 placed on a horizontal surface, the centers of the sides 3YL, 3YR are folded inward at the end sides in the extending direction of the sides 3XU, 3XD so that the sides 3XU, 3XD approach each other as shown in FIG. 2(B). During this folding, the exterior bodies 10 are stacked on top of each other so that the side 3XU overlaps the sides 3YL, 3YR, forming a lower stacked portion 5D. Furthermore, the exterior bodies 10 are stacked on top of each other so that the side 3XU overlaps the sides 3YL, 3YR, forming an upper stacked portion 5U. Here, in the center portion in the extending direction of the sides 3XU and 3XD, the sides 3YL and 3YR are separated from each other, and the sides 3XU and 3XD are stacked so as to be in contact with each other.

[0018] 4 is an enlarged view of the bottom surface portion 10D of the storage bag 1 arranged as shown in the perspective view of FIG. 3, showing the lower laminated portion 5D and the upper laminated portion 5U when viewed from the side opposite the storage space. The bottom surface portion 10D has a four-layer structure in which the lower laminated portion 5D and the upper laminated portion 5U are laminated at the end portions in the direction in which the sides 3XU and 3XD extend, and the folded side 3YL or 3YR is sandwiched between the pair of sides 3XU and 3XD to form a four-layer structured four-layer portion 6S (an example of a "multilayer portion" as used herein). Furthermore, a two-layer structured two-layer portion 6C (an example of a "laminated portion" as used herein) is formed in the center portion in the direction in which the sides 3XU and 3XD extend, where the sides 3XU and 3XD are laminated. The number of exterior bodies 10 forming the two-layer portion 6C and the four-layer portion 6S can be changed as needed.

[0019] With the two-layer portion 6C and the four-layer portion 6S formed, the two-layer portion 6C and the four-layer portion 6S are sandwiched from above and below by a heat application device described later, and heat is applied, whereby the exterior bodies 10 are thermally welded together, and a bottom portion 10D that seals the storage space of the storage bag 1 is formed.

[0020] By forming the two-layer portion 6C and the four-layer portion 6S in the storage bag 1, a gusset is formed in the storage bag 1, and the storage space of the storage bag 1 has a substantially rectangular parallelepiped shape.

[0021] Next, a manufacturing method of the storage bag 1 according to this embodiment will be described with reference to Fig. 5. Fig. 5 is a flowchart relating to the manufacturing method of the storage bag 1. First, in the upper bottom surface portion forming process of step S101, the exterior bodies 10 are joined together to form the upper bottom surface portion 10U. The upper bottom surface portion 10U may be formed by joining the exterior bodies 10 together so that a gusset is formed, similar to the bottom surface portion 10D.

[0022] In the absorbent article storage step S102 following step S101, the absorbent articles 2 are stored in the storage bag 1. With one of the side surfaces 10S of the storage bag 1 placed on a horizontal surface, multiple absorbent articles 2 are stored in the storage space of the storage bag 1 from the open end 10M.

[0023] In the laminated portion forming step S103 following step S102, a plurality of bottom surface portion 10D exterior bodies 10 are laminated in the thickness direction as described above to form two-layer portion 6C and four-layer portion 6S.

[0024] In the heat application step S104 following step S103, the two-layer portion 6C and the four-layer portion 6S are sandwiched from above and below by a heat application device, and heat is applied to seal the storage space and form the bottom portion 10D. The area to which heat is applied does not have to be the entire surface of the two-layer portion 6C and the four-layer portion 6S, but may be a part of the storage space side of the two-layer portion 6C and the four-layer portion 6S as long as it can seal the storage space. In this embodiment, heat is applied linearly in the extension direction of the sides 3XU and 3XD, resulting in heat welding.

[0025] Before the heat application step (step S104), a hole is formed between the two-layered portion 6C and the four-layered portion 6S. A thermoplastic adhesive such as a hot melt adhesive may be applied linearly in the extension direction of sides 3XU and 3XD. With the hot melt adhesive or the like applied between the two-layer portion 6C and the four-layer portion 6S, when the two-layer portion 6C and the four-layer portion 6S are sandwiched from above and below by a heat application device and heat is applied, the layers of exterior body 10 are bonded to each other by the hot melt adhesive or the like, sealing the storage space and forming bottom portion 10D.

[0026] The bottom surface portion 10D formed by heat welding may have the two-layer portion 6C and the four-layer portion 6S cut away by a slide cutter or the like on the opposite side of the heat-welded area from the storage space.

[0027] Next, a manufacturing device for the storage bag 1 according to this embodiment will be described with reference to FIG. 6. FIG. 6 is a schematic diagram illustrating a portion of the configuration of a manufacturing device M for the storage bag 1 according to this embodiment (hereinafter abbreviated as "manufacturing device M"). Note that FIG. 6 is a simplified diagram for the sake of explanation. The manufacturing device M includes a conveying path 8, such as a belt conveyor, for conveying the storage bag 1 in the process of being manufactured, and a heating device 17 provided midway along the conveying path 8. The outline arrow Y in FIG. 6 indicates the conveying direction of the conveying path 8. Note that the conveying path 8 may be a combination of multiple belt conveyors or the like. In this embodiment, the heating device 17 is considered to be at its front when viewed from the conveying direction of the conveying path 8. Note that the up-down direction of the manufacturing device M refers to the direction of gravity, and the direction perpendicular to the up-down direction and the extension direction of the conveying path 8 is considered to be the left-right direction. The left-right direction of the manufacturing device M coincides with the extension direction of the two-layer section 6C and the four-layer section 6S of the storage bag 1.

[0028] The storage bag 1 on which the two-layer portion 6C and the four-layer portion 6S have been formed in the laminated portion forming process of step S103 in Fig. 5 is transported by transport path 8 to heating device 17. The transported storage bag 1 has exterior bodies 10 that form bottom surface portion 10D thermally welded together by heating device 17, thereby forming bottom surface portion 10D. Heating device 17 may also be used when sealing upper bottom surface portion 10U in step S101 in Fig. 5. The up-down and left-right directions of heating device 17 coincide with the up-down and left-right directions of manufacturing apparatus M.

[0029] Fig. 7 is a side view of heat application device 17. Fig. 8 is a front view of heat application device 17. Heat application device 17 includes a pair of heat seal blocks 9A, 9B in the vertical direction, a pair of moving mechanisms 11AL, 11BL in the vertical direction, and a pair of moving mechanisms 11AR, 11BR in the vertical direction.

[0030] Moving mechanisms 11AL and 11AR, and moving mechanisms 11BL and 11BR are provided in pairs on the left and right sides of heat application device 17. Heat seal block 9A extending in the left and right sides of heat application device 17 is disposed between moving mechanisms 11AL and 11AR, and heat seal block 9B extending in the left and right sides of heat application device 17 is disposed between moving mechanisms 11BL and 11BR.

[0031] Movement mechanisms 11AL, 11AR, 11BL, and 11BR are moved vertically by a linear motion mechanism such as an air cylinder, and sandwich two-layer portion 6C and four-layer portion 6S of storage bag 1 conveyed on conveying path 8 from above and below with heat seal blocks 9A and 9B. Note that movement mechanisms 11AL, 11AR, 11BL, and 11BR may also sandwich two-layer portion 6C and four-layer portion 6S by moving one of heat seal blocks 9A and 9B in the vertical direction using movement mechanisms 11AL, 11AR or movement mechanisms 11BL, 11BR in the vertical direction.

[0032] The pair of heat seal blocks 9A, 9B are block-shaped members extending in a substantially straight line in the left-right direction of the heat application device 17. The heat seal blocks 9A, 9B apply heat and pressure in the vertical direction while sandwiching the two-layer portion 6C and the four-layer portion 6S from above and below using the moving mechanisms 11AL, 11AR, 11BL, 11BR. Heat applicator 17 welds outer casings 10 together to form bottom portion 10D that seals the storage space of storage bag 1. Once bottom portion 10D is formed, heat seal block 9A is moved upward by moving mechanisms 11AL and 11AR, and heat seal block 9B is moved downward by moving mechanisms 11BL and 11BR. This causes the pair of heat seal blocks 9A and 9B to move away from storage bag 1. After heat seal blocks 9A and 9B have moved away from storage bag 1, conveyance path 8 resumes, and storage bag 1 is conveyed to the next process. Heat seal blocks 9A and 9B may extend in a curved line along the left-right direction of heat applicator 17.

[0033] 9 is an enlarged view of a pair of heat seal blocks 9A, 9B. The upper heat seal block 9A has a seal surface 12A that contacts the two-layer portion 6C and four-layer portion 6S of the storage bag 1, and the lower heat seal block 9B has a seal surface 12B that contacts the two-layer portion 6C and four-layer portion 6S.

[0034] The heat seal blocks 9A, 9B have a heater 13, a heat-resistant portion 14, and an outer wall portion 15 in the direction away from the sealing surfaces 12A, 12B. The outer wall portion 15 has a substantially rectangular shape extending in the left-right direction. The outer wall portion 15 may be made of, for example, an arc chute or a rubber plate. The outer wall portion 15 of each heat seal block 9A, 9B may be made of different materials. For example, the outer wall portion 15 of the heat seal block 9A may be made of a rubber plate, and the outer wall portion 15 of the heat seal block 9B may be made of an arc chute. The heat-resistant portion 14 has a tape-like shape extending in the left-right direction, and may be, for example, a fluororesin tape.

[0035] The heater 13 is a generally cylindrical member extending in the left-right direction of the heat application device 17, and is, for example, a nichrome wire. The heater 13 may be attached to the inside of the heat seal blocks 9A, 9B by being inserted into a through-hole that passes through the heat seal blocks 9A, 9B in the left-right direction. The heater 13 generates heat when power is supplied to it.

[0036] The heat seal blocks 9A, 9B have gap suppression portions 16 provided in a thickness direction on the seal surfaces 12A, 12B opposite the heater 13. The gap suppression portions 16 are heat-resistant materials such as fluorine tape, and are arranged in areas facing both ends of the two-layer portion 6C of the storage bag 1.

[0037] The storage bag 1 for storing the absorbent articles 2 often has a gusset because it accommodates multiple absorbent articles 2 folded into a substantially rectangular shape. Furthermore, since the absorbent articles 2 come into direct contact with the wearer's skin, hygienic conditions are required. Therefore, it is preferable that the storage bag 1 for storing the absorbent articles 2 has a sealed storage space. Furthermore, the absorbent articles 2 have water-absorbing properties, and absorbing moisture may reduce the amount of liquid the absorbent article 2 can absorb. However, when the two-layer section 6C and the four-layer section 6S are formed to form the gusset as described above, a gap is formed between the sealing surfaces 12A and 12B at both ends of the two-layer section 6C, where the two-layer section 6C and the four-layer section 6S intersect, due to the thickness of the four-layer section 6S. This may result in poor bonding, such as insufficient bonding to prevent easy undoing, or no bonding at all. Therefore, there is a risk that the storage space may become connected to the outside at the poorly bonded portions during manufacturing or distribution. Furthermore, the area in which the storage space is connected to the outside increases, and there is a risk that the absorbent article 2 may come out of the storage space.

[0038] Also, in order to prevent poor bonding of the second layer portion 6C, it is possible to increase the temperature of the sealing surfaces 12A and 12B using a heater 13, lengthen the time that the sealing surfaces 12A and 12B hold the exterior body 10, or strengthen the force with which the sealing surfaces 12A and 12B hold the exterior body 10. However, when these methods are implemented, excessive heat is applied to areas other than the ends of the second layer portion 6C, which can cause the areas other than the ends of the second layer portion 6C to melt, or cause tears or holes due to the melting. This may result in poor bonding, such as:

[0039] On the other hand, the manufacturing apparatus M according to this embodiment places the gap suppressing portion 16 in the region facing both ends of the two-layer portion 6C. This positions the gap suppressing portion 16 in the gap formed between the sealing surfaces 12A and 12B by the thickness of the four-layer portion 6S, thereby suppressing the formation of a gap. Both ends of the two-layer portion 6C are welded in close contact with the gap suppressing portion 16, preventing poor bonding. Furthermore, the gap suppressing portion 16 sandwiches the exterior body 10 from above and below with a stronger force than in regions where the gap suppressing portion 16 is not placed, thereby tightly sealing the exterior bodies 10 together. This prevents poor bonding at both ends of the two-layer portion 6C. The thickness of the gap suppressing portion 16 is appropriately set depending on the difference between the thickness of the four-layer portion 6S and the thickness of the two-layer portion 6C.

[0040] Furthermore, because the gap-reducing portion 16 is, for example, a fluororesin tape having heat resistance, the area where the gap-reducing portion 16 is disposed receives less heat than the sealing surfaces 12A and 12B. As a result, poor bonding at both ends of the two-layer portion 6C, which are tightly adhered by the gap-reducing portion 16, due to excessively high heat being applied thereto, can be prevented.

[0041] The gap suppression portion 16 may extend in the left-right direction and be disposed in a region facing the two-layer portion 6C of the storage bag 1. As described above, the bottom portion 10D has the two-layer portion 6C in the center of the two-layer portion 6C and the four-layer portion 6S in the extension direction, and the four-layer portion 6S is disposed adjacent to the two-layer portion 6C on the end side of the two-layer portion 6C and the four-layer portion 6S in the extension direction. Because the two-layer portion 6C is stacked with fewer exterior bodies 10 than the four-layer portion 6S, application of heat at the same level as the four-layer portion 6S may result in excessive bonding, melting the exterior bodies 10 of the two-layer portion 6C, and creating holes in the exterior bodies 10. For this reason, it is preferable to provide the heat-resistant gap suppression portion 16 in a region facing the two-layer portion 6C, which is stacked with fewer exterior bodies 10, because this prevents excessive bonding or melting of the exterior bodies 10 and the creation of holes. Furthermore, the four-layer portion 6S, to which it is preferable to apply higher heat than the two-layer portion 6C in order to weld the outer casings 10 together, does not go through the gap suppression portion 16, so higher heat can be applied than to the two-layer portion 6C, thereby improving the bonding strength.

[0042] The gap suppressing portion 16 may be a thick portion that is thicker than other regions. For example, it may be integrally molded with the sealing surfaces 12A, 12B, and the regions facing both ends of the two-layer portion 6C or the regions facing the two-layer portion 6C may be convex portions that are convex toward the sealing surfaces 12A, 12B. Alternatively, a member having a thickness corresponding to the gap formed between the sealing surfaces 12A, 12B and both ends of the two-layer portion 6C may be disposed on the sealing surfaces 12A, 12B. By disposing the thick portion in the region including the regions facing both ends of the two-layer portion 6C, it is possible to suppress the formation of gaps between the both ends of the two-layer portion 6C and the sealing surfaces 12A, 12B.

[0043] Furthermore, gap suppression unit 16 may be provided in heat-seal blocks 9A and 9B with clamping sections that increase the clamping force in the areas facing both ends of two-layer portion 6C. For example, the clamping force applied by heat-seal blocks 9A and 9B to clamp exterior body 10 from above and below may be controlled to be different between the area facing two-layer portion 6C and the area facing four-layer portion 6S, or may be controlled to be different between the area facing both ends of two-layer portion 6C and the area facing areas other than both ends of two-layer portion 6C. By increasing the clamping force in the areas including both ends of two-layer portion 6C, it is possible to prevent gaps from forming between both ends of two-layer portion 6C and sealing surfaces 12A and 12B.

[0044] Furthermore, the gap suppressing portion 16 may be disposed in a region spanning from the end of the two-layer portion 6C to the end of the four-layer portion 6S on the two-layer portion 6C side. That is, the gap suppressing portion 16 may be disposed near both ends of the two-layer portion 6C. FIG. 10 is an enlarged view showing a pair of heat seal blocks 9A, 9B in which the gap suppressing portion 16 is disposed near the ends of the two-layer portion 6C. By disposing the gap suppressing portion 16 near both ends of the two-layer portion 6C, it is possible to prevent the formation of gaps between both ends of the two-layer portion 6C and the seal surfaces 12A, 12B. Furthermore, the gap suppressing portion 16 is disposed in the two-layer portion 6C other than near the ends of the two-layer portion 6C. Since the gap suppressing portion 16 is not placed between the four-layer portion 6S and the sealing surfaces 12A, 12B, a gap is formed between the four-layer portion 6S and the sealing surfaces 12A, 12B. This prevents excessive heat from being applied, and prevents poor bonding, such as tearing or holes caused by melting or excessive heat. Furthermore, since heat is applied to the four-layer portion 6S without going through the gap suppressing portion 16, higher heat is applied to the four-layer portion 6S than to the two-layer portion 6C, thereby improving bonding strength.

[0045] The heat seal blocks 9A, 9B may have a temperature sensor that measures the temperature of the heater 13 and a high-heat portion that has a higher thermal conductivity than other members and is provided between the heater 13 and the seal surfaces 12A, 12B. By having a temperature sensor, the heat seal blocks 9A, 9B can adjust the power supplied to the heater 13. By having a high-heat portion, the heat seal blocks 9A, 9B can reduce unevenness in the heat transferred to the seal surfaces 12A, 12B.

[0046] The features included in each of the embodiments and modifications thereof disclosed above can be combined with each other. [Explanation of symbols]

[0047] 1. Storage bag 2. Absorbent articles 3XU, 3XD, 3YL, 3YR... Side 5U...Top laminate section 5D··Lower layer 6C...Second layer part 6S...4th floor section 7.Heat welding part 8. Transport path 9A, 9B Heat seal block 10. Exterior body 10U...Top bottom part 10S...Side part 10D...Bottom part 10H··Handle 10M...Open end 11AL, 11AR, 11BL, 11BR...Movement mechanism 12A, 12B sealing surface 13. Heater 14...Heat-resistant part 15...Outer wall 16. Gap suppression section 17. Heat application device M··Manufacturing equipment Y arrow

Claims

1. An apparatus for manufacturing a storage bag, the apparatus comprising: an exterior body that forms a storage space for storing an object; and a sealing section that is provided in a part of the exterior body, that seals the storage space after the object is stored in the storage space, and that has a stacking section in the center where the exterior body is stacked in a thickness direction, a heat application device that has a gap suppression part in an area facing the end of the laminated part, the gap suppression part suppressing the formation of a gap at the end of the laminated part, and that applies heat by sandwiching the sealing part from above and below to seal the storage space; Storage bag manufacturing equipment.

2. The gap suppression part is a fluorine tape. The apparatus for manufacturing the storage bag according to claim 1.

3. The gap suppression portion is a thick portion having a thickness greater than that of other regions. The apparatus for manufacturing the storage bag according to claim 1.

4. The gap suppressing portion is a clamping portion that clamps the laminated portion with a stronger force than other regions. The apparatus for manufacturing the storage bag according to claim 1.

5. The sealing portion has a multilayer portion adjacent to the laminated portion, in which more of the exterior bodies are laminated in the thickness direction than the laminated portion. The apparatus for manufacturing the storage bag according to any one of claims 1 to 4.

6. The gap suppressing portion is disposed in a region spanning the laminated portion and the multi-layer portion. The apparatus for manufacturing the storage bag according to claim 5.

7. The gap suppression portion is disposed in a region facing the stacked portion. The apparatus for manufacturing the storage bag according to claim 5.

8. The thickness of the gap suppression portion is set according to the difference between the thickness of the multilayer portion and the thickness of the laminated portion. The apparatus for manufacturing the storage bag according to claim 5.

9. the heat application device applies heat to the sealed portion by sandwiching the sealed portion from above and below, thereby thermally welding the exterior bodies of the sealed portion together to seal the storage space. The apparatus for manufacturing the storage bag according to any one of claims 1 to 4.

10. A method for manufacturing a storage bag including an exterior body that forms a storage space for storing an object to be stored, and a sealing part that is provided in a part of the exterior body and seals the storage space after the object is stored in the storage space, a laminated portion forming step of forming a laminated portion by laminating the exterior bodies in a thickness direction in a central portion of the sealed portion; a heat application step of applying heat by sandwiching the sealing part from above and below using a heat application device having a gap suppressing part that suppresses the formation of a gap at the end of the laminated part in an area facing the end of the laminated part, thereby sealing the storage space, Method for manufacturing storage bags.

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