JP2005212889A - Packaging bag - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a packaging bag which is not bulky when it is not used, the opening of which is automatically opened for the insertion of a content in using, whose packaging is completed when its opening is closed and requires less work, and which generates less waste in disposing. <P>SOLUTION: This packaging body 1 is provided with a top open shallow bag shaped packaging material 2 having a bottom part 2a and a side face part 2b and with an inner sole body 3 to be laid on the bottom part of the packaging material. This inner sole body is made of an elastically restorable material, and at least both ends of the body is formed as a folding part 4 to be folded back with the side face part to make the packaging material flatly foldable. By releasing the folded condition, the restoring force of the folded part of the inner sole body to be in a flat condition causes the side face of the packaging material to be pushed up to automatically open the opening 1a of the material. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a package, and more particularly to a full-open type package that replaces a food tray.

  Conventionally, trays mainly made of polystyrene foam or the like have been used as packaged foods for sale, and foods are put in the trays, and are wrapped with a transparent stretch film for sale.

  In packaging using this type of tray, unused trays are packed in a small volume by overlapping, and the trays are packaged through a process of taking out the trays one by one, putting food in, and then wrapping.

  The tray has the required thickness even though it is thin, so even if it can be stacked, it can be quite bulky, increasing transportation and storage costs, and packaging large quantities of products. A large space is required for processing.

  In addition, since foods must be wrapped one by one after putting them in the tray, packaging takes a lot of time and high-efficiency packaging is not possible. Furthermore, since trays are discarded as waste after use, the amount of waste increases, which is one of the major causes of environmental degradation.

  Some of them use packaging bags that sell food in shallow bags made of plastic film without using trays, but this type of bag is extremely troublesome to open the opening from a folded state, There was a problem that it was not possible to package quickly when selling food.

JP 2001-287772 A

   The problem to be solved by the present invention is to eliminate the use of packaging trays, reduce the volume during transportation and stocking, reduce the volume and reduce transportation and storage costs, and reduce the number of steps for opening the opening during food packaging. The goal is to reduce the volume of trash at the time of disposal after use.

  As means for solving the above-mentioned problems, the present invention comprises a film-like shallow bag-shaped packaging material having a bottom portion and a side surface portion and having an open top, and an intermediate bottom body laid on the top surface of the bottom portion of the packaging material. The insole is made of a material having elastic restoring force, and at least both ends of the insole are folded back portions together with the side portions so that the packaging material can be folded into a flat shape, and the folded state The side surface portion of the packaging material is pushed up by the restoring force of the folded portion of the insole body to the flat shape by releasing the opening so that the opening of the packaging material is automatically opened.

  The midsole is preferably composed of a non-woven fabric because it is highly water-absorbing and oil-absorbing, but may be composed of a continuous foam material.

When the midsole is composed of a nonwoven fabric, it is desirable to use an air-through type nonwoven fabric made of thermal bond and knitted with hot air. In that case, a nonwoven fabric having a weight of 20 to 100 g / m ² and a thickness of about 0.8 to 5.0 mm is suitable.

  The form of the wrapping material and the insole body is a triangular shape in which the planar shape of the wrapping material and the insole body is a horizontally long hexagonal shape, and the corresponding two apex portions at both ends in the longitudinal direction of the insole body respectively form vertices. The shape of the folded portion of the shape, the bottom shape of the packaging material and the planar shape of the midsole body are short, and the folded portion is formed on the corresponding two or four sides of the midsole, the bottom of the packaging material, and The planar shape of the midsole can be selected from a polygonal shape or a circular shape, and a folded portion is formed at both ends corresponding to the midsole.

  In any form, in the unused stage, the folded portion of the mid-bottom body is folded together with the side surface portion of the packaging material and boxed in a flat shape. This flat state is maintained by applying a load.

  If you take out one bag at a time during food packaging, the folded part of the midsole rises in the direction of restoring its flatness by its own elasticity when the load is released, and at that time the side part of the packaging material is pushed up. The opening part comprised by the upper end of the side part of a packaging material opens automatically, and foodstuffs can be immediately put in a packaging material.

  After the food is put in, the packaging work is completed if the upper ends of the side surfaces are closed and stopped with an adhesive tape or the like.

  When the packaging body according to the present invention lays an insole body made of a material having high self-restoring and hygroscopic properties such as a nonwoven fabric on the bottom of a film-like shallow bag-like packaging material, the packaging material is folded at an unused stage. Fold the folded part of the midsole with the side part of the wrapping material, and release the folded state when packaging food, and press the side part of the wrapping material with the self-restoring force to the flat shape of the folded part of the midsole body Since the opening of the packaging material is automatically opened by this, it is not necessary to open the opening of the packaging material with each finger at the time of packaging work, and the packaging work can be performed quickly and sold. Helps to promote and does not make customers wait.

  In addition, it is not necessary to wrap as with conventional trays, and it is only necessary to close the opening of the packaging material, so the labor and materials required for packaging can be greatly reduced, and the packaging cost can be reduced. .

  In addition, when folded in an unused stage, it is completely flat, so unlike conventional trays, a large amount of packaging can be packed and stored under a small volume, and it takes up little space during transportation and storage. Costs and storage costs can be significantly reduced.

  Furthermore, since it becomes a small capacity when it is discarded as garbage after use, the disposal process becomes easy.

  As a result, the total cost of packaging can be significantly reduced.

  FIGS. 1-7 shows one Embodiment of the package 1 by this invention, and has shown the case where it is set as the package 1 which has the bottom part of a horizontally long hexagonal shape in planar view, FIG. 1 is the folded state, FIG. FIG. 3 shows each perspective view in a state in which the load (weight) maintaining the folded state is removed from the folded state and the opening 1a of the package 1 is opened. 3 is a plan view of FIG. 1, FIG. 4 is a plan view of FIG. 2, FIG. 5 is a cross-sectional view taken along line AA of FIG. 3, and FIG.

  The packaging body 1 is a shallow bag-shaped packaging material 2 formed of PE, PP, plastic film, paper, etc. (preferably transparent film) generally used in soft packaging (packaging with a flexible packaging material). And an insole 3 that is laid on the bottom 2a of the packaging material 2, and a full opening that comprises an opening 1a whose upper end is opened when the side surface 2b of the packaging 2 rises. It is an open type.

  The insole 3 is made of a material having a self-restoring force due to elasticity and rich in water absorption and oil absorption, for example, a nonwoven fabric made of thermal bond, in which fibers are gathered by hot air.

As this nonwoven fabric, one having a weight (weight per unit area) of 20 to 100 g / m ² and a thickness of about 0.8 to 5.0 mm is preferably used. Since it is bulky, it is rich in elastic restoring force and has moisture and oil content. Even foods that contain water are selected that sufficiently absorb water and oil.

Table 1 shows the results of testing the restoring force of the nonwoven fabric in our company.

  “Air-through” and “point bond” in Table 1 are aspects of the thermal bond manufacturing method, “air-through” is a sheet-like form in which fibers are entangled with air pressure (hot air), and “point bond” is an emboss roll. The fiber is partially pressed and hardened to form a sheet.

  In addition, “MD” of “restoring force” indicates the maximum load that is deformed by linearly pressing in a direction parallel to the flow direction of the nonwoven fabric at the time of manufacturing the nonwoven fabric, and restoring the flat shape by releasing the pressure. “CD” indicates the maximum load that is linearly pressed in the direction perpendicular to the flow direction of the nonwoven fabric and then deformed, and then the pressure is released to restore the flat shape.

  As a result of the above test, it was found that, among the thermal bond manufacturing methods, the “air-through” type nonwoven fabric has both “MD” and “CD” having good recoverability. Therefore, in the present invention, the air-through type nonwoven fabric should be adopted. Is desirable.

  As illustrated in FIG. 7, the midsole 3 has apexes corresponding to the apex portions 3 a and 3 a at both ends in the longitudinal direction, and a triangular portion having two sides 3 b and 3 b including the apex portions 3 a and 3 a. The folded portions 4 and 4 are folded back onto the intermediate portion 3d by folding lines 3c and 3c.

  The folded portions 4, 4 are placed along the inner surface of the side surface portion 2 b of the packaging material 2, and the folded portions 4, 4 are formed on the inner surface of the side surface portion 2 b when the packaging material 2 is folded flat as described above. Are folded together, and when the load (weight) for maintaining the folded state is removed, the side surface portion 2b is pushed up by the self-restoring force of the folded portions 4 and 4.

  Therefore, in the unused stage, as shown in FIGS. 1, 3, and 5, the folded portions 4 and 4 of the midsole 3 are folded together with the side surface portion 2b of the wrapping material 2 and packed into a flat shape by packing or bundling. I'm left.

  When packaging foods, the package 1 is taken out one bag at a time, and if the load that has been maintained flat is removed, the self-restoring force of the folded portions 4 and 4 of the midsole 3 automatically rises and is wrapped with this. The side surface 2b of the material 2 is pushed up, and the opening 1a is automatically opened in a direction different from the 90 ° direction when folded as shown in FIG. 2, FIG. 4, and FIG. It can be put in the packaging material 2.

  After the food is put, the upper end of the side surface portion 2b is closed, and the packaging is completed by stopping with an adhesive tape or the like.

  Even if the food contains juice or oil, the folded portions 4 and 4 are also absorbed by the water absorption of the mid-bottom body 3.

  In the said embodiment, although the case where the insole 3 was made into a horizontally long hexagonal shape was shown, when the packaging material 2 is made into a square bottom bag, as shown in FIG. Folded portions 4, 4 may be formed on the sides or four sides, and when a polygonal bag is formed, folded portions 4, 4,... May be formed on each side as illustrated in FIG. .

  In addition, as a constituent material of the said midsole 3, you may use foam materials, such as simultaneous foaming urethane other than a nonwoven fabric.

The perspective view which shows the folding state of one Embodiment of the package by this invention. The perspective view which shows the state which released the load which maintains a folding state, and opened automatically same as the above. The top view of FIG. The top view of FIG. AA sectional drawing of FIG. BB sectional drawing of FIG. The top view of a midsole. The top view of a modification same as the above. The top view which shows the other modification same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Packaging body 1a Opening part 2 Packaging material 2a Bottom part 2b Side surface part 3 Middle bottom body 4 Folding part

Claims (8)

A film-like shallow bag-shaped packaging material having a bottom portion and a side surface portion and having an open top, and an insole body laid on the bottom upper surface of the packaging material,
This inner bottom body is made of a material having elastic restoring force, and at least both ends of the inner bottom body are folded back portions together with the side surface portions, so that the packaging material can be folded flatly and the folded state is released. By doing so, the side part of the packaging material is pushed up by the restoring force of the folded part of the insole body to the flat shape, and the opening of the packaging material is automatically opened.   The package according to claim 1, wherein the insole body is made of a nonwoven fabric.   The packaging body according to claim 2, wherein the nonwoven fabric constituting the insole is an air-through nonwoven fabric in which fibers are knitted by hot air made of thermal bond. The package according to claim 3, wherein the nonwoven fabric constituting the insole is 20 to 100 g / m ² and a thickness of 0.8 to 5.0 mm.   The package according to claim 1, wherein the inner bottom body is made of a foamed material such as urethane foam.   The planar shape of the bottom part and the midsole of the packaging material is a horizontally long hexagonal shape, and the corresponding vertexes at both ends in the longitudinal direction of the midsole are respectively triangular folded portions that form vertices. The package of any one of -5.   The package according to any one of claims 1 to 5, wherein a planar shape of the bottom and the middle bottom of the packaging material is a short shape, and a folded portion is formed on at least two corresponding sides of the middle bottom.   The package according to any one of claims 1 to 5, wherein a planar shape of the bottom and the midsole of the packaging material is a polygon or a circle, and folded portions are formed at both ends corresponding to the midsole. .

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