JP2017030750A - Cushioning packaging bag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cushioning packaging bag capable of protecting a side face when wound around a packaged article.SOLUTION: A cushioning packaging bag includes: an air introduction section consisting of an air supply passage; an air sealed section consisting of a plurality of section air sealed bags connected to the air supply passage; and a plurality of check valves capable of introducing air from the air supply passage to the inside of each section air sealed bag. In the air sealed section, two partial heat seals are provided linearly in parallel to cross the section air sealed bags from a side edge to the other side edge, and a folded section is formed to have oblique heat seals which are folded at a center line of the two partial heat seals and go from side edges toward the center line so as to straddle the partial heat seals in a state that ends of the two partial heat seals are brought into contact with each side edge.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a buffer packaging bag that prevents a packaged article (packaged object) from being damaged during transportation.

  Conventionally, by supplying air from the supply port, each of the sealed bag portions can be filled with air at one time, and once filled, the air does not flow out unexpectedly due to the check action of the check valve, In addition, even if one or a plurality of sealed bag portions out of a large number of sealed bag portions are broken, a cushioning material made of a plastic film is provided so that air is released only to the specified sealed bag portion. Has been. In addition, a shock-absorbing packaging bag that can package an object to be packaged using such a shock-absorbing material is also provided.

  Patent Document 1 discloses a buffer packaging bag configured by using a base body formed by heat-bonding a required portion of a double-layered plastic film, and the base body of the buffer packaging bag has air at one end. A flat air supply path provided with a supply port; and a flat air sealing bag portion continuously provided on one side edge of the supply path, and the sealing bag portion includes: A plurality of independent air compartment sealing bag portions formed by heating and bonding the sealing bag portions at a plurality of locations in a direction crossing the side edge, the inside of each compartment sealing bag portion, and the inside of the air supply path A flat check valve made of a plastic film arranged and configured to be able to communicate with each other separately, and on both sides of the base body along the longitudinal direction of the sealing bag portion, in a direction crossing each compartment sealing bag portion, It is formed by heating and bonding in at least one row at a predetermined interval. A flat buffer packaging bag base body configured as described above is provided with a space forming fold capable of air circulation for forming an accommodation space for an object to be packaged in the buffer packaging bag. Are folded from both sides in a direction crossing each compartment sealing bag portion, and both sides of the base body along the longitudinal direction of the compartment sealing bag portion are heat-bonded except for the air supply port portion of the air supply path, and heat-bonded. By forming an opening for insertion / removal of an object to be packaged between the edges of the base body in the longitudinal direction of the partition sealing bag portion between both sides, the sealing bag portion is formed by press-fitting air into the supply path from the supply port. A buffer packaging bag is described which is configured to complete the buffer packaging bag.

  Patent Document 2 uses a base body integrally provided with buffer sheet portions that are heated and welded on the outer peripheral portions of two sheet materials made of synthetic resin film and distributed to the left and right with an air injection path as a boundary, Each of the buffer sheet portions is provided with a plurality of elongated sealing bag portions that are partitioned by partition weld portions provided at predetermined intervals in the length direction of the air injection path, and seals the buffer sheet portions on both sides. The bag portion is configured to be filled with air from an air inlet at one end of an air injection path formed on one end side in the length direction of the sealed bag portion, and the sealed bag portions filled with air are independent of each other. The buffer sheet portions on both sides are folded in a flat state and are closed by heating and welding at two sides of the outer peripheral portion parallel to the length direction of the sealing bag portion. Are separated from each other along It describes a cushioning material, characterized in that the sea urchin configuration.

JP 2002-225945 A JP 2003-290447 A

  Although the buffer packaging bag described in Patent Document 1 is wrapped by being wrapped around a packaged object, the side surface of the packaged object cannot be covered with the buffer packaging bag. In particular, in the case of an article to be packaged with a certain thickness, the side surface around which the buffer packaging bag is not wrapped is exposed, and the possibility of damage during transfer increases. The cushioning material described in Patent Document 2 is a type in which the cushioning material is divided into two parts and inserted from both side surfaces of the packaged object, but this cannot cover the surface other than the side surface of the packaged object with the cushioning material. In particular, in the case of an article to be packaged having a certain length, the area where the cushioning material does not exist is large, and there is a high possibility that the article will be damaged during transportation.

  If the cushioning material used for packaging is folded into the exposed part of the packaged item, or another cushioning material is wrapped around the packaged item, the entire packaged product can be covered, and damage during the transfer of the packaged product Can be prevented, but it takes time and effort to fold the cushioning material and stop it with a seal.

  Then, an object of this invention is to provide the buffer packaging bag which can also protect the side surface at the time of winding around a to-be-packaged object.

The shock-absorbing packaging bag according to the present invention is a shock-absorbing packaging bag formed by heat-sealing a required portion of a plastic film that is doubled,
An air introduction part comprising an air supply path having an air supply port at one end; an air sealing part comprising a plurality of compartment air-sealing bags connected to the air supply path; A plurality of check valves installed so as to be able to introduce air into each of the plurality of compartment air-tight bags,
The air sealing portion has a partial heat seal that allows air to flow inside each compartment air sealing bag so as to cross the plurality of compartment air sealing bags from one side edge toward the other side edge. The two partial heat seals are applied in parallel to each other, folded at the center line of the two partial heat seals, and in contact with the ends of the two partial heat seals at the respective side edges. A bent portion is formed in which an oblique heat seal is applied from the side edge toward the center line so as to straddle the heat seal.

  ADVANTAGE OF THE INVENTION According to this invention, the buffer packaging bag which can also protect the side surface at the time of winding around a to-be-packaged object can be provided.

It is an expanded view which shows the structure of the buffer packaging bag which concerns on one Embodiment of this invention. It is a photograph which shows the state which looked at the bending part when air was put into the buffer packaging bag of FIG. 1 from the side. It is an expanded view which shows the structure of the buffer packaging bag which concerns on other one Embodiment of this invention. It is an expanded view which shows the structure of the buffer packaging bag which concerns on other one Embodiment of this invention. It is an expanded view which shows the structure of the buffer packaging bag which concerns on other one Embodiment of this invention. It is a photograph which shows the state which looked at the bending part when air was put into the buffer packaging bag of FIG. 4 from diagonally upward. It is the photograph which shows the state which looked at the whole when air was put into the buffer packaging bag of FIG. 5 from the side.

  A configuration example of the buffer packaging bag according to the present invention is shown in FIG. This buffer packaging bag is formed by heat-sealing a required portion of a double-layered plastic film, and includes an air introduction part 1 for introducing air, an air sealing part 2 for sealing air, and And a check valve 3 to be communicated. The portions that are heat-sealed are a solid line portion, a broken line portion, and a hatched portion in FIG. The solid line portion is linearly heat-sealed, the broken line portion is linearly heat-sealed, and the hatched portion is planarly heat-sealed. The dashed line is the center line of the two partial heat seals.

  The plastic film should just be the heat-sealable surface which faces when doubled. Specific examples of the material constituting the plastic film include polyolefins such as polyethylene and polypropylene; halogenated polyolefins such as polyvinylidene chloride and polyvinylidene fluoride; polyvinyl alcohol; nylon 6, nylon 6,6, polymetaxylylene adipamide, etc. Polyamides of polyethylene; polyesters such as polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate; polyacrylic acids such as poly (meth) acrylate methyl, poly (meth) ethyl acrylate, poly (meth) acrylate butyl, etc. An ester; and a copolymer of monomers forming these; “(Meth) acryl” means methacryl or acryl.

  Specific examples of polyethylene include linear low density polyethylene, high pressure method low density polyethylene, high density polyethylene, and metallocene polyethylene. Specific examples of polypropylene include a homopolymer of propylene and a random or block copolymer of propylene and ethylene or 1-butene.

  The plastic film may be a single layer or may be laminated in two or more layers by coextrusion or the like. In particular, a multilayer film having a heat seal layer as the outermost layer is preferable, and a heat seal layer (for example, linear low density polyethylene) / base material layer (for example, nylon) / heat seal layer (for example, linear low density polyethylene). ). The thickness of the plastic film and each layer can be appropriately set according to the purpose.

  An air supply path 10 having an air supply port 11 at one end is formed in the air introduction unit 1. For example, as shown in FIG. 1, by performing linear heat sealing on three sides of the portion that becomes the air supply path 10 of the plastic film that is doubled, one side that has not been heat-sealed becomes the air supply port 11. Thus, the air supply path 10 can be formed.

  As shown in FIG. 1, it is preferable to form the air introduction part 1 in the position used as one side when a buffer packaging bag is expand | deployed. The width of the air introduction part 1 is preferably 10 to 30 mm, and may be 20 mm, for example.

  In the air sealing portion 2, a plurality of compartment air sealing bags 20 connected to the air supply path 10 and partitioned independently from each other are formed. For example, as shown in FIG. 1, a planar heat seal is applied to the side edge 21 of the portion that becomes the air sealing portion 2 of the double-layered plastic film and the end portion 22 on the side opposite to the air supply path 10. In addition, by forming a plurality of linear heat seals in the vertical direction from one end of the air supply path 10 to form a section 23, the air supply path 10 is connected to the vertical direction from the air supply path 10 in the vertical direction. A plurality of extending compartment airtight bags 20 can be formed.

  As shown in FIG. 1, it is preferable to form the air sealing part 2 in parts other than the air introduction part 1 in a buffer packaging bag. The size of the air-sealing portion 2 can be appropriately set in consideration of the size of the article packaged with the buffer packaging bag. As shown in FIG. 1, the side edges 21 and the end portions 22 are preferably subjected to planar heat sealing. The width of the heat-sealed side edge 21 and end portion 22 is preferably 5 to 20 mm, for example, 10 mm.

  As shown in FIG. 1, the compartment air-sealing bag 20 is preferably formed so as to extend from the air supply path 10 in the vertical direction within the region of the air-sealing portion 2. The width of the compartment air-sealed bag 20 is preferably 10 to 30 mm, for example, 20 mm. The number of compartment air sealing bags 20 formed in the air sealing part 2 is preferably 10 to 50, more preferably 20 to 40, and for example, 30.

  The check valve 3 is installed such that air can be introduced from the air supply path 10 into each of the compartment air sealing bags 20. That is, the upstream side of the check valve 3 communicates with the inside of the air supply path 10, and the downstream side of the check valve 3 communicates with the inside of the compartment air sealing bag 20. By doing so, the air supplied from the air supply port 11 is introduced into the compartment air sealing bag 20 through the air supply path 10 and the check valve 3 and sealed. The check valve 3 is preferably installed in each of the plurality of compartment air-tight bags 20.

  Two partial heat seals 31 are linearly and parallelly provided on the air sealing portion 2 so as to cross the plurality of compartment air sealing bags 20 from one side edge 21 toward the other side edge 21. . The partial heat seal is formed by alternately forming a heat seal portion (partial adhesion portion) and a non-heat seal portion (partial communication portion). Ensure that air can flow. By doing so, air can be sealed inside the compartment air sealing bag 20 as a whole.

  Then, it is folded at the center line 32 of the two partial heat seals 31 so that the end portions of the two partial heat seals 31 are in contact with each other at the side edges 21 so as to straddle the partial heat seals 31. An oblique heat seal 33 is applied from the side edge 21 toward the center line 32. That is, FIG. 1 is a plan view of the developed view, and the oblique heat seal 33 is V-shaped, but in reality, both ends of the bent portion 30 are three-dimensional, and the oblique heat seal 33 is linear.

  In this way, the bent portion 30 is formed by the two partial heat seals 31 and the oblique heat seal 33. As shown in FIG. 2, the state of the folded portion when air is put in the buffer packaging bag is folded at the folded portion 30 by the effect of the two partial heat seals 31 and the oblique heat seal 33. And the side edge 21 is folded inside. That is, when the buffer packaging bag is wrapped around the packaged item, the buffer packaging bag also wraps around the side surface and can be protected. Moreover, the effect which fixes a to-be-packaged thing also arises.

  The distance D between the two partial heat seals 31 is preferably 20 to 60 mm, more preferably 30 to 50 mm, and for example, 40 mm. By setting the distance D to 20 mm or more, the buffer packaging bag can easily wrap around the side surface. By setting the distance D to 60 mm or less, an appropriate angle is easily obtained at the bent portion. In addition, about the space | interval D of the two partial heat seals 31, and the formation position and angle of the diagonal heat seal 33, it can set suitably in consideration of the shape of the target buffer packaging bag.

  Here, it is preferable that the diagonal heat seal 33 is formed so as not to cross the partition air-tight bag 20a on the most side edge side. By doing so, even if the diagonal heat seal 33 is a linear or planar complete heat seal (not a partial heat seal), the inside of the compartment air-sealed bag 20a on the most side edge side is not completely blocked. The state in which air can be circulated can be maintained.

  On the other hand, it is also preferable that the oblique heat seal 33 be a partial heat seal. By doing so, as shown in FIG. 3, for example, even when the oblique heat seal 33 is formed so as to cross the partition air sealing bag 20a on the most side edge side, each partition air sealing bag 20 (the partition air seal on the most side edge side) is formed. It is possible to maintain a state in which air can be circulated without completely blocking the interior of the bag 20a (including the bag 20a).

  1 and 3 may be sufficient as the bending part 30 formed in a buffer packaging bag, and as shown in FIG.4 and FIG.5, as shown in FIG.4 and FIG.5, two (FIG. 4 is two, FIG. 5 is three). Good. The number of the bent portions 30 may be 5 or more, but is preferably 2 to 4. For example, when air is put into the buffer packaging bag of FIG. 4 in which two bent portions 30 are formed, a shape as shown in FIG. 6 is obtained. Such a buffer packaging bag can be used by, for example, covering the packaged object from above. The position where the bent portion 30 is formed can be appropriately set in consideration of the size of the packaged object to be packaged with the buffer packaging bag.

  In particular, when a plurality of bent portions 30 are formed, it is preferable that the end 22 on the opposite side of the air supply passage 10 of the air sealing portion 2 is connected to the air supply passage 10. In this way, for example, in the buffer packaging bag of FIG. 5 in which three bent portions 30 are formed, the end 22 on the opposite side of the air supply path 10 of the air sealing section 2 is connected to the air supply path 10. In the case where the air is introduced into the tube, the tube has a quadrangular cross section as shown in FIG. As such a buffer method bag, for example, a method of using the bag around a packaged item is conceivable. If the end 22 on the side opposite to the air supply path 10 is connected to the air supply path 10, if the location is around the air supply path 10, the air supply path 10 and the air seal 2 (compartment air seal) The connecting part of the bag 20) may be sufficient, and other places may be sufficient.

  The article to be packaged with the buffer packaging bag according to the present invention is not particularly limited, and the size and shape of the buffer packaging bag may be determined in accordance with the size and shape of the article. The buffer packaging bag according to the present invention is suitable for packaging box-type electrical appliances such as inkjet printers.

DESCRIPTION OF SYMBOLS 1 Air introduction part 2 Air sealing part 3 Check valve 10 Air supply path 11 Air supply port 20 Compartment air sealing bag 20a Compartment air sealing bag 21 Side edge 22 End part 23 Compartment 30 Bending part 31 Partial heat seal 32 Center line 33 Diagonal heat seal D spacing

Claims (6)

A buffer packaging bag formed by heat-sealing a required portion of a double-layered plastic film,
An air introduction part comprising an air supply path having an air supply port at one end; an air sealing part comprising a plurality of compartment air-sealing bags connected to the air supply path; A plurality of check valves installed so as to be able to introduce air into each of the plurality of compartment air-tight bags,
The air sealing portion has a partial heat seal that allows air to flow inside each compartment air sealing bag so as to cross the plurality of compartment air sealing bags from one side edge toward the other side edge. The two partial heat seals are applied in parallel to each other, folded at the center line of the two partial heat seals, and in contact with the ends of the two partial heat seals at the respective side edges. A shock-absorbing packaging bag in which a bent portion is formed so that an oblique heat seal is applied from the side edge toward the center line so as to straddle the target heat seal.   The shock-absorbing packaging bag according to claim 1, wherein the oblique heat seal is formed so as not to cross a compartment air-tight bag on the most side edge side.   The buffer packaging bag according to claim 1 or 2, wherein the oblique heat seal is a partial heat seal that allows air to flow inside each compartment air-tight bag.   The buffer packaging bag according to any one of claims 1 to 3, wherein an interval between the two partial heat seals is 20 to 60 mm.   The buffer packaging bag according to any one of claims 1 to 4, wherein a plurality of the bent portions are formed.   The buffer packaging bag according to claim 5, wherein an end of the air sealing portion opposite to the air supply path is connected to the air supply path.