JP2007238112A - Packing method for compressible sheetlike item - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packing method for a compressible sheetlike items, whereby the volume can be easily reduced when sheetlike items, especially ones such as plastic foamed sheet or cut products of plastic foamed sheet, are packed in stack. <P>SOLUTION: The packing method uses an air bag 1 having an airtight opening 2 at one end, and an air exhaust valve 4 capable of drawing and expelling air present in the bag 1. After the compressible sheetlike items 3 are packed in the air bag 1, air in the air bag 1 is discharged by the air discharge valve 4 and thus the volume is reduced. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is a compressible sheet that can be easily reduced in volume when laminating and packing a plurality of sheet-like materials such as plastic foam sheets and plastic foam sheet cut products. It relates to the packing method of things.

  A plastic bubble sheet (hereinafter abbreviated as “sheet-like material”), that is, a film of a plastic material such as polyethylene is vacuum-formed to obtain a cap film having a large number of protrusions. Molded articles formed by laminating back films to form a number of sealed air chambers are used in various fields including buffer packaging.

  For example, as shown in FIG. 2, a plastic bubble sheet-like material formed by laminating a cap film 6 provided with a large number of convex portions on a plastic film and a flat back film 7 and enclosing air in the convex portions. in use. In addition, as a material of the same kind, the cushioning function is not as high as that of a bubble sheet. In the following description, these are represented by sheet-like materials.

  Since the sheet-like material is manufactured continuously, it is provided as a material in a form in which a long product is wound up. Further, as a shipment form of a sheet-like material such as a bubble sheet or a foamed sheet, there is a bundle-shaped product obtained by cutting and bag-making according to a customer's request in addition to a scroll shape. For some applications, a product or semi-finished product called “cut product”, which is wound up and cut into an appropriate size and shape, is prepared, and is often used in an automatic packaging machine or the like. Therefore, the cut products are usually transported, stored, and used in a form in which a plurality of sheets are stacked and bound. The same handling is performed when a medium to small bag is formed with a bubble sheet. In addition to being used as it is, the bubble sheet bag is also used to manufacture a shock-absorbing envelope in which a paper envelope is lined. In the following description, bags are also represented in terms of cut products. In the following description, cut products are also included in the sheet-like material.

  Until now, bundling of cut products has been performed by tying together an appropriate number of sheets with a string. There are various knotting methods, such as a crossed knot and a kanji knot, depending on the shape and dimensions of the product. Although the work of tying the string itself can be efficiently performed by an automatic binding machine, there is a problem that the portion where the string strikes is constricted and the cut product is easily bent and wrinkled. If this becomes severe, the cushioning performance of the cut product will deteriorate and the aesthetics will be impaired. Further, in the conventional shipping form of a sheet-like material such as a bubble sheet and a foamed sheet, the volume is large and bulky, so that there has been a problem that there is a large risk of cost increase in both the transportation means and the storage means.

  Therefore, the present invention has been made as a result of intensive investigations in order to solve the problems of the prior art. By using a method of sucking the internal air after packing using an air bag, the volume of the package can be reduced. We have found what we can achieve and have completed it.

According to the present invention, there is provided a compressible sheet-like packaging method using an air bag having an opening having airtightness at one end and an air discharge valve capable of sucking and discharging air inside. There is provided a method for packing a sheet-like material, in which after the possible sheet-like material is packed with the air bag, the volume is reduced by discharging the air inside the air bag with the air discharge valve.
In the present invention, a bubble sheet and a foam sheet are used as the compressible sheet material.

  Further, according to the present invention, there is provided a packing method for a compressible sheet material, wherein an air bag having an opening at one end is used, and after the compressible sheet material is packed with the air bag, the air bag is used. There is provided a sheet-like packaging method for sealing the air bag opening after the air inside the air bag is sucked and discharged from the opening by air suction / discharge means.

  According to the packing method of the present invention, the volume of the entire package can be reduced by packing the laminate of sheet-like materials and sucking the internal air, thereby improving the work efficiency during transportation and storage. It is possible to reduce transportation and storage costs.

  Next, embodiments for carrying out the present invention will be described with reference to the drawings. However, the present invention is not limited to these embodiments, and the knowledge of those skilled in the art can be used without departing from the scope of the present invention. It goes without saying that various changes, modifications, and improvements can be added based on the above.

  FIG. 1 is an explanatory diagram schematically showing an example of a packing method for a compressible sheet according to the present invention. In FIG. 1, the air bag 1 has a substantially rectangular shape in a state where air is not contained, and has an opening 2 that can be opened and closed that is airtight when sealed, at one end (one side) thereof. The laminated sheet-like material 3 is accommodated from the opening 2. The air bag 1 can use the thing of a desired size and a shape according to the shape of a sheet-like thing 3 to laminate | stack, a magnitude | size, thickness, the number of lamination | stacking, etc. FIG.

  After the laminated sheet-like material 3 is stored in the air bag 1, the opening 2 is sealed. The volume of the entire package including the air bag 1 is reduced by discharging air from the sealed air bag 1 through the air discharge valve 4 provided in the air bag 1 using the air discharge means 5. Turn into. As the air discharge means 5, a vacuum pump or the like is used, but it is preferable to use a material whose volume reduction volume ratio can be appropriately adjusted according to the material or the like of the sheet-like material 3.

  As described above, as the sheet-like material 3 such as a bubble sheet used in the present invention, for example, as shown in FIG. 2, a cap film 6 provided with a large number of convex portions on a plastic film, a flat back film 7 and And a bubble sheet made of plastic in which air is sealed in the convex portion.

  Furthermore, as the material of the sheet-like material 3 used in the present invention, any plastic can be used, but in terms of processability and cost, ordinary polyethylene, polypropylene, or EVA (ethylene-vinyl acetate copolymer) is used. Is preferred.

  A commercially available air bag 1 can be used. For example, the air bag 1 is made of a plastic sheet and has an opening 2 that can be opened and closed on one side of the air bag 1. In addition, those having an air discharge valve 4 capable of sucking and discharging the internal air can be preferably used. It is preferable that the opening 2 has sufficient airtightness when sealed.

  As shown in FIGS. 3 to 4, by providing a notch (V-shaped cut) 8 across the air bag 1 in the vicinity of the end of the air bag 1, the sheet-like material 3 is removed from the air bag 1. Unpacking (unpacking) can be performed easily.

FIG. 5 is an explanatory view schematically showing another example of a compressible sheet packing method according to the present invention.
In this example, an air discharge apparatus having a sealed chamber 13 having a clamp 10 and a seal bar 12 and connected to an air suction / discharge means 11 such as a suction pump is used. After the laminated sheet 3 is stored in the air bag 1, the opening 14 of the air bag 1 is fixed by the clamp 10, and the air in the air bag 1 is sucked and discharged by the air suction / discharge means 11. The opening 14 of the air bladder 1 is sealed with the seal bar 12. In this example, since it is not necessary to provide the air exhaust valve 4 in the air bag 1, the cost is low and it is suitable for use in large quantities.

  Next, when the present inventor conducted an experiment using the various sheet-like materials for the packing method of the present invention, the volume ratio after volume reduction as shown in Table 1 is the restored state when the packaging is unpacked. It was found that the buffer performance was favorable. When the volume reduction is larger (more compressed) than the volume ratio after volume reduction shown in Table 1, the sheet-like material itself such as a bubble sheet is deformed, and when the packaging is opened, It will not return to the state. As a result, the buffer performance of the sheet-like material is lowered.

  In Table 1, the volume ratio after volume reduction has a width because the bubble sheet varies depending on the size of the grain, the thickness of the film, and the foam sheet in accordance with the expansion ratio.

  According to the method for packing a sheet-like material of the present invention, work efficiency during transportation and storage can be improved, and transportation and storage costs can be reduced. .

It is explanatory drawing which shows roughly an example of the packing method of the compressible sheet-like material which concerns on this invention. It is a schematic diagram which shows the bubble sheet which is an example of a sheet-like object. It is explanatory drawing which shows an example of the air bag used for this invention. It is explanatory drawing which shows the other example of the air bag used for this invention. It is explanatory drawing which shows schematically the other example of the packing method of the sheet-like material which concerns on this invention.

Explanation of symbols

1: air bag, 2: opening, 3: laminated sheet-like material, 4: air discharge valve, 5: air discharge means, 6: cap film, 7: back film, 8: notch, 10: clamp, 11: Air suction / discharge means, 12: seal bar, 13: sealed chamber, 14: opening.

Claims (4)

A compressible sheet packing method,
Using an air bag having an opening with airtightness at one end and an air discharge valve capable of sucking and discharging the air inside,
A method for packing a sheet-like material, wherein after the compressible sheet-like material is packed with the air bag, the volume is reduced by discharging the air inside the air bag with the air discharge valve.   The method for packing a sheet according to claim 1, wherein the compressible sheet is a bubble sheet.   The method for packing a sheet according to claim 1, wherein the compressible sheet is a foam sheet. A compressible sheet packing method,
Using an air bag with an opening at one end,
After the compressible sheet is packed with the air bag, the air inside the air bag is sucked and discharged by air suction / discharge means from the opening of the air bag, and then the opening of the air bag is sealed. , Packing method of sheet-like material.

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