JP2017039523A - Cushioning packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushioning packaging bag capable of storing a relatively large packaged product, relative to a size of the cushioning packaging bag, and excellent in a cushioning effect.SOLUTION: A cushioning packaging bag is configured so that: a front face side wall body 1 and a rear face side wall body 2 are made to face each other; and peripheral edge parts a, b1, b2 are jointed while leaving an opening part c. The front face side wall body and the rear face side wall body are formed by overlapping inside films 11, 12 and outside films 12, 22 respectively, and the inside films and outside films are jointed so that the peripheral edge parts are jointed each other, and jointed at parts 1b, 2b on inside of the peripheral edge parts, and spaces 1a, 2a for cushioning air are formed between the inside films and outside films.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a shock-absorbing packing bag capable of buffering an external impact on a packaged product.

  Conventionally, for pharmaceuticals, for example, glass eye drops and PTP-packed tablets, for food, for example, chocolate containing Western liquor, for precision equipment, for example, ink cartridges for printers and glass solar panels, etc. A so-called back-in box or double-packed packaging is used to store contents that need to be protected from external impacts and heat, and the outer layer is sealed with air to provide cushioning. There are packing bags that protect the packaged items.

  For example, in Patent Document 1, a front side wall body and a back side wall body constituting a packaging bag are configured by overlapping an inner film and an outer film, respectively, and the inner film and the outer film are mutually connected at the periphery. The buffer gas is sealed inside the peripheral edge portion to provide cushioning properties. Then, the packaged product is protected by accommodating the packaged product in the accommodation space with the space between the inner film on the front side wall body and the inner film on the rear side wall body.

JP 2010-89808 A

  However, in such a buffer packaging bag, a large amount of buffer gas is sealed between the inner film and the outer film, so that the accommodation space between the inner film and the inner film is narrowed, compared to the size of the packing bag. The size of the packaged items that can be accommodated in a small size is small.

  If a small amount of buffer gas is sealed between the inner film and the outer film, a relatively large packaged product can be accommodated, but in this case, when lifted, the buffer gas is biased upward and the packaged product is moved downward. Unevenly, since there is no buffer gas around the packaged product, there is a problem that the buffer effect is reduced.

  Therefore, an object of the present invention is to provide a buffer packing bag that can accommodate a packaged item that is relatively large compared to the size of the buffer packing bag and that has an excellent buffering effect.

That is, the invention according to claim 1 is a buffer packaging bag formed by facing the front side wall body and the back side wall body and joining the peripheral edge part leaving the opening.
The front side wall and the back side wall are each formed by overlapping an inner film and an outer film,
The inner film and the outer film are bonded to each other at a part of a region surrounded by the peripheral edge of the inner film and the outer film, and for the buffer gas between the inner film and the outer film. A buffer packaging bag characterized in that a space is formed.

The invention according to claim 2 is characterized in that the inner seal portion in which the inner film and the outer film are joined inside the peripheral edge portion is provided at a position that equally divides the buffer gas space in the vertical direction. It is a buffer packing bag of Claim 1.

  The buffer packing bag of the present invention is similar to the buffer packing bag described in Patent Document 1, and the front side wall and the back side wall are formed by overlapping the inner film and the outer film, respectively, and the inner film and the outer film are formed. The peripheral edges are joined to each other, and the inside of the peripheral edge is used as a buffer gas space. For this reason, the packaged product can be protected by accommodating the packaged product in this accommodation space with the space between the inner film on the front side wall body and the inner film on the rear side wall body.

  The difference between the buffer packing bag of the present invention and the buffer packing bag described in Patent Document 1 is that the buffer packing bag of the present invention joins the inner film and the outer film to each other at a part inside the peripheral edge. It is that you are. Thus, since the inner film and the outer film are joined inside the peripheral edge portion, the space between the inner film and the outer film does not spread at the joining portion, and a large amount of buffer gas cannot be sealed. For this reason, it is possible to take a relatively large packaged space and accommodate a relatively large packaged product.

  Further, even when lifted, since the gap between the inner film and the outer film does not spread at the joining portion, the buffer gas does not move upward and become biased. For this reason, sufficient buffer gas is maintained around the product to be packed, and an excellent buffering effect is exhibited.

FIG. 1 relates to a specific example of the buffer packing bag of the present invention, FIG. 1 (a) is a front explanatory view of the buffer packing bag, and FIG. 1 (b) is a cross-sectional explanatory view taken along line xx of FIG. It is.

  Next, specific examples of the present invention will be described with reference to the drawings. FIG. 1 shows this specific example, FIG. 1 (a) is a front explanatory view of a shock-absorbing packing bag, and FIG. 1 (b) is a cross-sectional explanatory view taken along line xx of FIG. 1 (a).

  As can be seen from these drawings, the cushioning packaging bag of the present invention is formed by facing the front side wall body 1 and the back side wall body 2 and joining the peripheral edge part leaving the opening. In the example of the figure, the bottom seal line a and the left and right side seal lines b1 and b2 are provided, and the top is the opening c. This opening part c is a part which accommodates to-be-packaged goods in a packing bag.

  And the surface side wall body 1 is formed by overlapping the inner film 11 and the outer film 12. The inner film 11 and the outer film 12 are bonded to each other at the peripheral edge portion, and are also bonded to each other in a part of the region surrounded by the peripheral edge portion. In FIGS. 1A and 1B, reference numeral 1b denotes a joint portion (internal seal portion) in a region surrounded by the peripheral edge portion. Moreover, 1a has shown the area | region where the inner side film 11 and the outer side film 12 are not joined, and makes this area | region the space for buffer gas.

  The back side wall 2 also has the same structure as the front side wall 1. That is, the back side wall body 2 is also formed by overlapping the inner film 21 and the outer film 22. The inner film 21 and the outer film 22 are bonded to each other at the peripheral edge, and are also bonded to each other even in a part of the region surrounded by the peripheral edge. In FIGS. 1A and 1B, 2b indicates a joint portion (internal seal portion) inside the peripheral edge portion. Reference numeral 2a denotes a buffer gas space.

  In addition, in FIG.1 (b), although the inner films 11 and 21 and the outer films 12 and 22 are drawn apart by the upper end, it can be filled with buffer gas from this site | part. Then, after the buffer gas spaces 1a and 2a are filled with the buffer gas, the buffer films are sealed in the buffer gas spaces 1a and 2a by sealing the inner films 11 and 21 and the outer films 21 and 22, respectively. it can.

  Next, in this example, the inner seal portions 1b and 2b have a semicircular shape. However, the present invention is not limited to this, and may be any shape. However, since it is necessary to enclose the buffer gas in the entire buffer gas spaces 1a and 2a, it is necessary that the buffer gas spaces 1a and 2a have a shape that is not divided. For example, dot shape, star shape, line shape, and the like.

  The positions of the internal seal portions 1b and 2b may be arbitrary, but it is desirable to provide the buffer gas spaces 1a and 2a at positions that equally divide the vertical direction. For example, it is a central position that bisects the vertical direction. Moreover, you may provide in the position which divides an up-down direction into three equal parts. In the example shown in the figure, internal seal portions 1b and 2b are provided at positions that divide the buffer gas spaces 1a and 2a into approximately three equal parts.

  In this example, the inner seal portion 1b of the front side wall body 1 and the inner seal portion 2b of the back side wall body 2 are provided at positions facing each other, but may be provided at different positions.

  Next, as the inner films 11 and 21, sealants such as a low density polyethylene film (LDPE), a linear low density polyethylene film (LLDPE), an unstretched polypropylene film (CPP), etc., which can be thermally welded with a thermoplastic resin. Materials can be used.

  Further, as the outer films 12 and 22, nylon film (Ny), polyethylene terephthalate film (PET), biaxially stretched polypropylene film (OPP), aluminum foil (Al foil), or Ny, PET, OPP, metallic aluminum Sealants such as LDPE, LLDPE, and CPP that can be thermally welded to a single-layer or multi-layer substrate film made of a vapor-deposited film on which an inorganic material such as (Al), alumina, or silica is deposited with a thermoplastic resin. A material provided with a material can be used.

1: Front side wall body 11: Inner film 12: Outer film 1a: Buffer gas space 1b: Inner seal part 2: Back side wall body 21: Inner film 22: Outer film 2a: Buffer gas space 2b: Inner seal part a: Bottom seal line b1: Left side seal line b2: Right side seal line c: Top opening

Claims (2)

In the shock-absorbing packaging bag formed by facing the front side wall body and the back side wall body and joining the peripheral edge part leaving the opening,
The front side wall and the back side wall are each formed by overlapping an inner film and an outer film,
The inner film and the outer film are bonded to each other at a part of a region surrounded by the peripheral edge of the inner film and the outer film, and for the buffer gas between the inner film and the outer film. A buffer packing bag characterized in that a space is formed.   The buffer packaging bag according to claim 1, wherein an inner seal portion that joins the inner film and the outer film inside the peripheral edge portion is provided at a position that equally divides the buffer gas space in the vertical direction. .

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