JP4335796B2 - Storage pocket manufacturing method - Google Patents

Description

  The present invention relates to a method for manufacturing a storage pocket into which an intermediate mount is inserted.

  As a manufacturing method of this type of storage pocket (clear pocket), Patent Document 1 discloses that a film that is folded flat and has a longitudinal opening to form a back sheet and a front sheet is transported horizontally. Then, a plurality of middle mounts are inserted between the front side sheet and the back side sheet at intervals in the transport direction from the opening, and the front and back sheets are welded between the adjacent middle mounts in the transport direction, and the welding is performed. It is disclosed that the opening portion of the bottomed bag-like pocket is formed by cutting the front and back sheets in the conveying direction and cutting the front and back sheets with a cutting blade between the middle mounts.

On the other hand, Patent Document 2 discloses a pocket-shaped file in which an opening part of a bottomed bag-like pocket is provided with a long elliptical semicircular arc-shaped notch portion, and a part of an intermediate mount stored in the pocket is exposed in the notch portion. A tool is disclosed.
JP-A-8-72454 JP 2001-26191 A

  By the way, the manufacturing method of the storage pocket disclosed in Patent Document 1 is a technology that can be applied to a general storage pocket in which the middle mount is not exposed from the opening of the pocket. When a method for manufacturing a storage pocket in which a part of the middle mount as shown in the figure is exposed in the notch, a part of the middle mount is also cut when the notch is formed. Therefore, the method for manufacturing the storage pocket disclosed in Patent Document 1 is not suitable as a method for manufacturing the storage pocket disclosed in Patent Document 2.

  As far as the present applicant knows, in the case of the storage pocket having the notch shown in Patent Document 2, after forming the bottomed bag-like pocket having the notch in the opening, the middle mount is manually inserted. For this reason, there is a problem that workability at the time of manufacturing the storage pocket containing the middle mount is deteriorated.

  In view of the above, an object of the present invention is to provide a method for manufacturing a storage pocket that can improve workability during manufacturing.

  In order to achieve the above object, the present invention cuts the front and back sheets in a method for manufacturing a bottomed bag-like storage pocket having an opening formed on one edge by inserting an intermediate mount between the front and back sheets. When the opening is formed by cutting with a blade, the opening is formed by cutting only the front and back sheets sandwiching the middle mount at the portion where the middle mount is located. That is, in the portion where the back side sheet, the middle mount, and the front side sheet are sequentially laminated, the opening is formed without cutting the middle mount by cutting only the sheet portion with the cutting blade from the front and back directions. Therefore, the insertion time of the intermediate mount can be performed at the same time as the case shown in Patent Document 1, and the workability is improved as compared with the case where the intermediate mount is inserted after the bottomed bag-like pocket is formed.

  To illustrate a more specific manufacturing method, a front sheet and a back sheet opposite to the front sheet are transported in the horizontal direction, and a plurality of middle mounts are spaced between the front and back sheets in the transport direction from the side perpendicular to the transport direction. And welds the front and back sheets between the adjacent middle mounts in the conveying direction and the side portions of the front and back sheets, and cuts the welded portion between the adjacent middle mounts in the conveying direction, Cut the sheet back and forth in the transport direction, and cut only the front and back sheets that sandwich the middle mount with the cutting blade at the part where the front mount or the rear mount is located in the transport direction of the separated front and back sheets. Form a bag with a bottom.

In this case, after the opening of the pocket is formed, the intermediate mount remains exposed at the opening. Therefore, the insertion interval of the intermediate mounts inserted between the front and back sheets is set to be larger than the longitudinal dimension of the intermediate mount, and between the adjacent intermediate mounts in the transport direction in a state of being separated from the longitudinal edge of the intermediate mount the welded, then the welded portion is cut disconnect the front and back of the sheet after the formation of the pocket formed by bottom bag like the opening, by pushing the middle mount into the pocket in the transport direction, the medium The mount can be inserted into the pocket.

  The method of forming the opening as described above can be applied even if it has a general opening shape as shown in Patent Document 1, but when forming the opening of the pocket, It is preferable to apply to the thing of the opening part shape which notched along the edge and formed the notch part from which a part of middle mount sheet | seat exposed. Even if it is the opening shape which has such a notch part, it can be accommodated in a pocket in the state which expressed a part of middle mount in the notch part by pushing in the middle mount.

  In the case where only the sheet is cut without cutting the intermediate mount as described above, the cutting blade is pushed by the thickness of the front and back sheets to cut the sheet. The pushing amount of the cutting blade can be adjusted by providing a regulating means for restricting the pushing amount of the cutting blade at the end of the cutting blade.

  Here, as a material of the sheet to be cut, a thermoplastic translucent resin is generally adopted, but it may be any other paper material or synthetic resin material, and may be a resin material. It can be applied to various materials regardless of translucency. Various materials such as a paper material and a synthetic resin material can be adopted as the material for the intermediate mount.

  Further, the cutting method using a cutting blade adopts a fusing method in which the cutting blade is heated when the sheet material is a thermoplastic resin, and is preferably cut by push cutting, but is not limited to these cutting methods. Various cutting methods can be employed.

  As described above, according to the present invention, in the portion where the back side sheet, the middle mount, and the front side sheet are sequentially laminated, the opening portion is cut without cutting the middle mount by cutting only the sheet portion from the front and back directions with a cutting blade. Therefore, the pocket can be easily manufactured.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an overall schematic view showing a manufacturing process of a storage pocket according to the present invention. In FIG. 1, the description has illustrated only one line in order to make the manufacturing flow easy to understand. However, in actuality, even in a manufacturing facility that incorporates two lines symmetrically as shown in Patent Document 1, Good.

  As shown in FIG. 1, the manufacturing method of the storage pocket 1 is the front side sheet | seat 4 which comprises the film 2 in the middle_sheet | mounting_paper insertion process, conveying the transparent film 2 folded flatly and opened the side in the horizontal direction. A plurality of middle mounts 6 are inserted between the back sheet 5 and the back sheet 5 at intervals in the transport direction of the film 2. Next, in the heat welding step, the space between adjacent middle mounts 6 and the side portions of the front and back sheets 4 and 5 are heat welded in accordance with the predetermined dimensions of the storage pocket 1.

  At this time, as will be described later, the insertion interval of the intermediate mount 6 is the interval between the intermediate mounts 6 because the intermediate mount 6 is pushed into the pocket from the opening 12 after the opening 12 of the pocket 1 is formed. It is necessary to set the weld 7. The welding portion 7 is set at a position separated from the longitudinal edge of the middle mount 6 in the transport direction.

  After the front and back sheets 4 and 5 are welded and the front and back sheets 4 and 5 are cooled in the cooling step, the binding hole portion 8 is punched out on one side edge portion in the drilling step. In FIG. 1, the code | symbol 21 shows a hole part reinforcement tape, This reinforcement tape 21 is inserted between the side parts of the front and back sheets 4 and 5, and is welded with the front and back sheets. After the drilling process, the cornering process 9 is performed on both ends of the binding margin side in the longitudinal direction as appropriate in the cornering process. Then, in the cutting step, the rear welding portion 7 is cut by the first cutting blade 10 in the conveying direction, and the front welding portion 7 is cut and opened by the second cutting blade 11. 12 is formed. At this time, a cutout portion 13 is formed at the same time, which is cut out along the edge of the opening portion 12 and a part of the inner mount 6 is exposed.

  When the opening 12 of the pocket 1 is formed, only the front and back sheets 4 and 5 sandwiching the middle mount 6 at the portion where the middle mount 6 is located are melted by the second cutting blade 11.

  FIG. 2A is a view showing a cut shape of the opening 12 having the notch 13, and FIG. 2B is a view showing a cut shape suitable for achieving the cut shape of FIG. In order to obtain the cutout shape of FIG. 2A, FIG. 2B shows a scraping blade 14 that cuts along the transport direction at the center position in the left-right direction perpendicular to the transport direction (see FIGS. 1 and 3). The cutting line 14a is shown. If the cut pieces 15 are cut off along the cutting line 14a in the left-right direction, the residue can be discharged in the left-right direction without any residue remaining on the conveyed sheet.

  FIG. 3 is a perspective view of the second cutting blade 11. The second cutting blade 11 is installed on the base 16, and both ends thereof are held by restriction pieces 17 as restriction means for restricting the amount of pushing of the second cutting blade 11. The second cutting blade 11 has a curved shape at the center so as to follow the desired shape of the opening, and the blade height is approximately the same as the height of the restricting pieces 17 on both sides or the thickness of the intermediate mount 6. The height is set back about 1/2. Further, since the second cutting blade 11 melts the front and back sheets 4 and 5, a heater (not shown) is incorporated in the base 16 so that the second cutting blade 11 can be heated.

FIG. 4 is a diagram schematically showing the principle of cutting. As shown in the figure, if a pair of second cutting blades 11 are placed so as to face each other and the front and back sheets 4 and 5 are sandwiched between them, and they are pushed into the sheets 4 and 5 so as to approach each other, the front and back are regulated. The amount of pressing of the cutting blade 11 in the front and back direction is regulated by hitting the pieces 17, the front and back sheets 4 and 5 are melted to a desired shape without cutting the middle mount 6 , and the cut piece 15 is simultaneously removed. Can do.

  The sheet thickness of the front and back sheets 4 and 5 is, for example, about 50 to 70 μm, and when the intermediate mount is a paper material, the thickness is about 50 to 200 μm. The restriction piece 17 may be set so that the clearance at that time is about 50 to 200 μm. Further, if the intermediate mount 6 uses a material such as paper that is a different material from the front and back sheets 4 and 5, the intermediate mount 6 is not cut, and the indentation trace of the cutting blade 11 remains on the intermediate mount 6. is there.

  When the storage pocket 1 cut in this way to form the opening 12 is conveyed to the stopper 18 in the next step, the front end of the middle mount 6 hits the stopper 18 and a part of the middle mount 6 exposed from the opening 12 is obtained. Can be pushed into the pocket 1, so that the intermediate mount 6 is inserted into the pocket 1 to complete.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added within the scope of the present invention. For example, in the above-described embodiment, the front and back sheets 4 and 5 are formed by forming a front side sheet and a back side sheet having openings by folding a sheet-like transparent film. These sheets may be formed, or a front sheet and a back sheet separated from each other may be used. When using the front side sheet and the back side sheet separated from each other, after the side sides of the one side are welded, the intermediate mount may be inserted from the other open end.

Overall schematic diagram showing the manufacturing process of the storage pocket of the present invention (A) is a figure which shows the cut shape of an opening part, (b) is a figure which shows a cut shape suitable in order to achieve the cut shape of the figure (a) Perspective view of the second cutting blade A diagram simulating the principle of cutting

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage pocket 2 Film 3 Opening part 4 Front side sheet 5 Back side sheet 6 Middle mount 7 Welding part 8 Hole part 10 1st cutting blade 11 2nd cutting blade 12 Opening part 13 Notch part 14 Throwing blade 15 Cut piece 16 Base 17 Restriction piece 18 Stopper

Claims (6)

A part of the opening edge of the front and back sheets made of thermoplastic resin that forms the storage pocket is cut out to form a notch in the opening of the storage pocket in which the intermediate mount is inserted. In the manufacturing method of the storage pocket, the middle mount is inserted inside the front and back sheets, the cutting blade is pushed in the portion where the middle mount is located, and only the front and back sheets sandwiching the middle mount are melted and cut to open the openings and notches. A method for manufacturing a storage pocket, wherein the portions are formed simultaneously. Insert the middle mount between the front and back of the sheet, a process for the preparation of a bottomed bag-like storage pocket having an opening formed on one edge cut with the cutting blade welding portion formed by welding said front and back sheets method for producing a storage pocket, characterized by forming said when forming the opening, the opening is cut only the front and back sheets sandwiching the middle mount in a portion where the middle mount located by opening Te. The front sheet and the back sheet opposite to the front sheet are transported in the horizontal direction, and a plurality of intermediate mounts are inserted between the front and back sheets from the side perpendicular to the transport direction at intervals in the transport direction, and are adjacent in the transport direction. Weld the front and back sheets between the middle mounts and the side parts of the front and back sheets, cut the welded part between the adjacent middle mounts in the transport direction, cut the front and back sheets back and forth in the transport direction, and Only the front and back sheets that sandwich the middle mount at the part where the middle mount is located in the transport direction front side or rear side of the separated front and back sheets is cut with a cutting blade to form an opening, and a bottomed bag shape The manufacturing method of the storage pocket characterized. Set the insertion interval of the middle mount inserted between the front and back sheets larger than the longitudinal dimension of the middle mount, and weld the adjacent intermediate mounts in the transport direction while being separated from the longitudinal edge of the middle mount claimed, then, to the welding portion by cutting the disconnect the front and back of the sheet after the formation of the formed bottomed bag-like pocket the opening, characterized by pushing the middle mount into the pocket in the transport direction Item 4. A method for manufacturing a storage pocket according to Item 3 . At the same time to form an opening of said pocket, in the opening, according to claim 2, wherein forming a notch formed by cutting out the front and back of the sheet so that the part of the middle mount is exposed The manufacturing method of the storage pocket in any one. The method for manufacturing a storage pocket according to any one of claims 1 to 5 , wherein the cutting blade pushes and cuts the front and back sheet thicknesses when forming the opening of the pocket.

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