JP2010116201A - Shock absorbing packaging material - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To properly protect an article or a part thereof having a complicated shape without requiring a redundant space. <P>SOLUTION: A shock absorbing packaging material wraps the article or the part thereof to absorb shocks applied to the article or the part thereof by accommodating it in an accommodation space 111. The material is formed by foamed shock absorbing sheets of multiple plies, and is made in a bag shape having an opening part 112 at an end of the accommodation space 111. A gradual narrowing part 115 is formed in the accommodation space 111 so that an inner dimension of the accommodation space 111 gradually decreases along a direction toward the deeper side of the accommodation space 111 from the opening part 112. In a base state of a substantially planar shape, the material has a pair of gradual narrowing part adhering parts 125 that is formed by mutually melting and adhering parts of a pair of the foamed shock absorbing sheets opposing to each other sandwiching the accommodation space 111 therebetween. At least parts thereof extend in a direction so that they mutually approach as they go to a deeper side in the accommodation space 111 from the opening part 112, and are formed with the gradual narrowing part 115. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a shock-absorbing wrapping material that wraps an article while reducing the impact on the article.

Generally, precious articles or the like that are more than a certain amount are stored and transported in a buffered state in order to prevent damage due to external impacts.
For this purpose, it is accommodated (packed) in a box such as cardboard or is wrapped with a bubble cushioning sheet (a synthetic resin sheet having a large number of bubbles (air bags)). In addition, there exists some which are disclosed by patent document 1 as an example of a novel bubble buffer sheet.

However, in the case of an article having a complicated shape, such as an article having a portion that protrudes to the outside (referred to as a protruding portion), there are the following problems when packaging in the above-described manner. .
That is, when an article having a complicated shape is accommodated in a cardboard box (generally in the shape of a rectangular parallelepiped), an extra space is generated inside the article. In other words, a large space (extra space) is required as compared with the size of the article to be stored.
In addition, when an article having a complicated shape such as an article having a protruding portion is packaged by the bubble cushioning sheet, the bubble (air bag) of the bubble cushioning sheet corresponds to the tip or the side edge of the protruding portion. In other words, such a situation occurs that the tip or the like is not protected.
JP 2004-196376 A

  An object of the present invention is to provide a cushioning packaging material that can appropriately protect an article having a complicated shape or a part thereof without requiring an extra space.

  In order to solve the above problems, the invention according to claim 1 is a shock-absorbing wrapping material that wraps an article or a part thereof by buffering the article or a part thereof by accommodating the article or a part thereof in a housing space. , Formed by a plurality of stacked bubble buffer sheets, and having a bag shape having an opening in one of the accommodation spaces, the accommodation space extending in a direction from the opening toward the back of the accommodation space. It is a buffer wrapping material in which a gradually narrowing portion in which the inner dimension of the accommodation space gradually decreases is formed.

First, since the shock-absorbing packaging material of the present invention is formed of a plurality of air bubble cushioning sheets, an article or a part thereof (the protruding portion of the article having a protruding portion or the like) is accommodated in the space for accommodating the buffer-wrapping material By housing within, the article or part thereof may be properly buffered.
That is, the article or part thereof is protected by a plurality of stacked bubble cushion sheets (each foam cushion sheet has a large number of bubbles (air bags)). There is a high possibility that any one of the bubbles corresponds to any one of these parts.
In this way, the article or a part thereof is more reliably protected.
In addition, when a part of the article is accommodated in the accommodation space of the cushion packaging material, the remaining part (part other than the part) of the article is packaged by the bubble cushion sheet as usual. As a result, it is buffered without taking up a large space as a whole, and space saving is also achieved.

Further, in the cushioning packaging material of the present invention, a gradually narrowing portion is formed in the accommodation space, and in the gradually narrowing portion, the accommodation space extends along the direction from the opening of the accommodation space toward the back of the accommodation space. The inner dimensions are gradually getting smaller.
For this reason, when the article or part thereof is accommodated in the accommodation space, the tip of the article or part thereof does not reach the innermost part of the cushioning packaging material (accommodation space), and the article or one of them. There may be a surplus portion (so-called “bumping”) between the tip of the portion and the innermost portion of the cushioning packaging material. In that case, the tip of the article or a part of the article will be more reliably protected.
That is, in the shock-absorbing packaging material of the present invention, when such a surplus portion (sluggishness) occurs, when an external force is applied in the direction toward the tip portion from the extension line of the tip portion of the article or part thereof. The surplus portion corresponds to the tip of the article or part thereof. For this reason, there is a higher possibility that the bubbles of the bubble buffer sheet correspond to the tip of the article or a part thereof.
Thus, with the cushioning packaging material of the present invention, the article or a part thereof is more reliably protected.

  The invention according to claim 2 is the shock-absorbing packaging material of the invention according to claim 1, and in a basic state that is substantially planar, the opposing shape across the accommodation space in which the article or part thereof is accommodated A pair of gradually narrowing portion forming welded portions in which a part of the bubble cushioning sheet is welded to each other, and at least a part of the pair of gradually narrowing portion forming welded portions extends from the opening to the back of the accommodation space. It is a shock-absorbing wrapping material that extends in a direction approaching each other as it goes, and is formed with the gradually narrowing portion.

In the cushioning packaging material of the present invention, a part of the pair of bubble cushioning sheets facing each other with the accommodation space interposed therebetween is welded to each other to form a pair of gradually narrowed part forming welded parts (at least a part thereof from the opening to the back). Extending in a direction approaching each other as it goes, and the above-mentioned gradually narrowed portion is formed by the pair of gradually narrowed portion forming welded portions.
For this reason, in the buffer packaging material of this invention, the effect of the invention which concerns on Claim 1 will be obtained easily and specifically.

  The invention according to claim 3 is the cushioning packaging material of the invention according to claim 2, and virtually extends at least one of the pair of gradually narrowing portion forming welded portions forming the gradually narrowing portion. In the buffer wrapping material, a coupling portion that couples at least a pair of the outermost foam cushioning sheets of the pair of foam cushioning sheets is formed in a portion on the back side from the intersection formed by .

A mode in which separate paired bubble cushion sheets are joined by welding (for example, the outermost pair of bubble cushion sheets at the outermost pair of the paired bubble cushion sheets) In addition to the two bubble cushioning sheets positioned on the outer side being joined by welding, etc., a mode in which paired bubble cushioning sheets are continuous at the joint (for example, a pair of bubble cushioning sheets located on the outermost side) However, a single bubble cushioning sheet is formed by being folded in two.
Further, the “joining portion” is not limited to an aspect formed in the entire width in the width direction of the paired bubble cushioning sheet (the direction perpendicular to the direction from the opening to the back of the accommodation space), but a part thereof There may also be embodiments in which they are formed.

  In the present invention, the pair of gradually narrowing portion forming welded portions actually intersect, and the coupling portion is formed in the portion on the back side from the intersection (first mode), and the pair of gradually narrowing portions. The narrow part forming welds do not actually intersect but are deeper than the intersection formed by virtually extending both or one of the pair of gradually narrowing part welds (virtual intersection). There exists an aspect (2nd aspect) in which the coupling | bond part is formed in the part of this side.

In particular, in the case of the first aspect, when the article or part thereof is accommodated in the accommodation space, the tip of the article or part thereof reaches the innermost part of the buffer packaging material (accommodation space). However, a surplus portion (bumping) occurs between the tip of the article or a part thereof and the innermost part of the cushioning packaging material.
Further, even in the case of the second aspect, when the article or part thereof is accommodated in the accommodation space, compared to the case where the coupling portion is formed on the opening side from the virtual intersection, The tip of the article or part thereof does not reach the innermost part of the buffer packaging material (accommodating space), and the surplus part is provided between the tip part of the article or part thereof and the innermost part of the buffer packaging material. There will often be (sluggage).
Therefore, in the cushioning material of the present invention, when an external force is applied in the direction from the extended line of the tip of the article or part thereof toward the tip, the surplus part of the article or part thereof Corresponding to the tip, or in many cases.
Thus, with the cushioning packaging material of the present invention, the article or a part thereof is more reliably protected.

  The invention according to claim 4 is the cushioning packaging material of the invention according to claim 1 or claim 2, wherein the inner bag is formed of a bubble cushioning sheet and has an inner bag body opening corresponding to the opening on one side. And an outer bag body formed on one side and having an outer bag body opening, and the inner bag body and the outer bag body include the inner bag body opening and the outer bag. The inner bag body is overlapped with the body opening portion while being accommodated with respect to the outer bag body, and the inner bag body is substantially flat and has one side on the inner side. The inner bag body, based on a folded line that linearly connects the bottom edge and the end of the inner bag body opening or the vicinity thereof, based on the rectangular original bag body corresponding to the bag body opening. The main part where the folded back part, which is the part on the opposite side of the opening, is the part on the inner bag body opening side The inner space of the inner bag body corresponds to the housing space, and the gradually narrowing portion is formed by the folding line. The outer bag body corresponds to the inner bag body, and in a basic state that is substantially planar, the bottom edge portion of the outer bag body is based on a rectangular original bag body whose one side corresponds to the outer bag body opening. The outer bag body opening is opposite to the outer bag body opening, with reference to a folding line that linearly connects the end of the outer bag body opening or the bottom edge thereof and the end of the outer bag body opening or the vicinity thereof. This is a shock-absorbing packaging material in which a folded portion that is a side portion is folded and bonded to a main portion that is a portion on the outer bag body opening side.

In the buffer packaging material of this invention, in addition to the effect of the buffer packaging material of the invention which concerns on Claim 1 or Claim 2, the following effect is obtained.
That is, in the inner bag body, the folded portion is folded and bonded to the main portion with reference to the folding line. Similarly, in the outer bag body, the folded portion is referenced to the main portion with respect to the folding line. Folded and glued.
For this reason, in the part applicable to both the folding | returning parts, the bubble-absorbing sheet will be quadruple as a general rule (this part will be referred to as a quadruple part). In addition, when there is a bag body in addition to the inner bag body and the outer bag body, or when the inner bag body and / or the outer bag body is formed of a plurality of stacked bubble buffer sheets, the number is more than four. Will be.
For this reason, it is more likely that any bubble corresponds to the part by using the article or a part of the part to be specifically protected so as to correspond to the quadruple part. It will be.
In this way, the article or a part thereof is more reliably protected.

  The invention according to claim 5 is the cushioning packaging material of the invention according to any one of claims 1 to 4, wherein the innermost bubble cushioning sheet of the plurality of stacked bubble cushioning sheets is the innermost one. The surface is smooth, and a plurality of bubbles are formed on the outer surface, and the outermost bubble cushioning sheet of the plurality of stacked bubble cushioning sheets has a smooth outer surface and an inner surface. It is a buffer packaging material in which a plurality of bubbles are formed.

  In the present invention, "the innermost bubble cushioning sheet among the plurality of bubble cushioning sheets of the plurality of sheets is one in which the inner surface is smooth and a plurality of bubbles are formed on the outer surface. The outermost bubble cushioning sheet is the one having the smooth outer surface and a plurality of bubbles formed on the inner surface thereof. In the aspect, “the bubble cushioning sheet forming the inner bag body has a smooth inner surface of the inner bag body, and a plurality of bubbles are formed on the outer surface of the inner bag body. The bubble cushioning sheet forming the body has a mode in which the outer surface of the outer bag body is smooth and a plurality of bubbles are formed on the inner surface of the outer bag body.

In the shock-absorbing packaging material of the present invention, the following operational effects are obtained in addition to the operational effects of the buffer-wrapping material of the inventions according to claims 1 to 4.
Both the inner surface and the outer surface of the cushioning packaging material are smooth.
And since the inner surface is smooth, it can be smoothly fitted to the article (protrusion) that is the object of packaging, and the outer surface is smooth, There is an advantage that dust does not easily accumulate on the outer surface after packaging.

[Embodiment 1]
Next, Embodiment 1 of the present invention will be described with reference to FIGS.
As shown in FIG.1 and FIG.2, this buffer packaging material is formed of the two bag bodies (inner bag body 10, outer bag body 30), and has a bag shape as a whole.

As shown in FIG. 2, the inner bag body 10 has an inner bag body opening (hereinafter, also simply referred to as “opening”) 12 and is formed by closing other portions. In the basic state, it is substantially planar.
The inner bag body 10 is formed based on a substantially square original bag body 20 (FIG. 4A).
As shown in FIGS. 2 and 4A, the original bag body 20 is formed by joining two bubble cushioning sheets 50 that are both substantially square.

As shown in FIG. 3, each bubble buffer sheet 50 is made of a soft thin synthetic resin and has a large number of bubbles (air bags) 52.
As shown in FIG. 3A, in the inner bag body 10, a large number of bubbles 52 are formed only on the outer surface side of the inner bag body 10. For this reason, the inner surface of the inner bag body 10 is smooth.
As shown in FIG. 2 and FIG. 4A, each of the original bag bodies 20 is formed by heat-sealing the bubble cushion sheets 50 on three sides of the substantially square bubble cushion sheets 50. The remaining one side portion is not thermally welded, and is the opening 12 (described above).
Thus, the original bag body 20 (inner bag body 10) has the bottom edge welded portion 21 (bottom edge portion), the pair of side edge welded portions 22, and the opening 12.

As shown in FIGS. 2 and 4A, the base bag body 20 is formed with an oblique weld portion 25.
The oblique welded portion 25 has either the left or right end of the opening 12 (the right end in FIG. 2 or the like) and the substantially central portion of the bottom edge welded portion 21 (more precisely, than the central portion). In the left-right direction, in the portion along the line that linearly connects between the left and right end portions of the opening 12 and the same end portion (the right end portion in FIG. 2 etc.) Both the bubble buffer sheets 50 are formed by heat welding.
The oblique welded portion 25 corresponds to the “fold line” of the present invention.

As shown in FIGS. 2, 4 </ b> A → FIG. 4 </ b> B, the portion of the original bag body 20 that does not have the opening 12 with respect to the oblique welded portion 25 (referred to as the folded portion 26) Folded along the oblique welded portion 25 (folded back in FIG. 2 and the like), and the portion of the original bag body 20 that has the opening 12 with respect to the oblique welded portion 25 (referred to as the main portion 28) And the folded portion 26 are adhered to each other by an adhesive tape (not shown).
Thus, the inner bag body 10 is formed.
For the above reasons, the inner bag body 10 is gradually narrowed in the inner and outer widths from the opening 12 toward the bottom (reference numeral omitted) in the substantially flat basic state.

As shown in FIG. 2, the outer bag body 30 also has substantially the same structure and the same size as the inner bag body 10.
That is, the outer bag 30 also has an opening 32 and is formed by closing the other parts. In the basic state, it is substantially planar.
The outer bag body 30 is also formed on the basis of a substantially square-shaped main bag body 40 (FIG. 4C), and the base bag body 40 is formed by combining two substantially square bubble cushioning sheets 50 together. ing.

As shown in FIG. 3A, in the outer bag body 30, a large number of bubbles 52 are formed only on the inner surface side of the outer bag body 30. For this reason, the outer surface of the outer bag body 30 is smooth.
As shown in FIGS. 2 and 4C, the base bag body 40 (outer bag body 30) has a bottom edge welded portion 41 (bottom edge portion), a pair of side edge welded portions 42, and an opening 32 (described above). have.
Further, the original bag body 40 has an oblique welded portion 45. The oblique welded portion 45 also corresponds to the “folding line” of the present invention.

As shown in FIGS. 2, 4 </ b> C to 4 </ b> D, the outer bag body 30 also corresponds to the inner bag body 10, and the folded portion 46 (the opening 32 is defined with reference to the oblique welded portion 45 of the original bag body 40. The portion not present) is folded back along the oblique welded portion 45 (folded back in FIG. 2 and the like), and the main portion 48 (opening portion based on the oblique welded portion 45 of the original bag body 40). 32) and the folded portion 46 are bonded by an adhesive tape (not shown).
That is, in the outer bag body 30, the folded portion 46 is folded back on the side opposite to the folded portion 26 in the inner bag body 10.
And like the inner bag body 10, the outer bag body 30 also has an inner width and an outer width gradually from the opening 32 toward the bottom (reference number omitted) in the substantially flat basic state. It is narrower.

And as shown in FIG.1 and FIG.2, the inner bag body 10 and the outer bag body 30 are piled up in the fitting state.
The outer bag body 30 is fitted to the inner bag body 10 from the bottom edge welded portion 21 side from the opening 32 side.
In other words, the inner bag body 10 (most part thereof) is accommodated in the outer bag body 30 through the opening 32 of the outer bag body 30 from the bottom edge welded portion 21 side.
Thus, the buffer packaging material is formed into a substantially double bag body, and is partially formed into a quadruple bag body (that is, in a portion corresponding to the folded portion 26).
The inner bag body 10 and the outer bag body 30 are bonded by an adhesive tape (not shown) in the fitted state.

And the space inside the inner bag body 10 corresponds to the accommodation space 11 of this buffer packaging material, and the opening part (inner bag body opening part) 12 of the inner bag body 10 is this buffer packaging material (this invention). Corresponds to “opening”.
As described above, the inner bag body 10 is formed by folding the substantially square original bag body 20 at the oblique welded portion 25 and bonding the main portion 28 and the folded portion 26. The inner width and the outer width are gradually narrowed from the opening 12 toward the back (bottom) (not shown) of the accommodation space 11.
Thus, a gradually narrowing portion 15 is formed in the accommodation space 11 of the inner bag body 10. That is, in this shock-absorbing packaging material, a gradually narrowing portion 15 is formed over the entire length of the accommodation space 11, and in the gradually narrowing portion 15, it goes from the opening 12 to the back of the accommodation space 11 (bottom edge welded portion 21). The inner dimension of the accommodation space 11 is gradually reduced along the direction.
On the other hand, the bottom edge welded portion 41 of the outer bag body 30 corresponds to the “joining portion” of the present invention.

Next, the manufacturing method of this buffer packaging material is demonstrated.
As shown in FIGS. 4A to 4B, in the original bag body 20 corresponding to the inner bag body 10, the folded portion 26 is folded along the oblique welded portion 25 and bonded to the main portion 28. Thus, the inner bag body 10 is formed.
Next, as shown in FIG. 4C, an original bag body 40 corresponding to the outer bag body 30 is fitted to the inner bag body 10, and the original bag body 40 is attached to the inner bag body 10 with an adhesive tape. It is adhered by (not shown).
Next, as shown in FIG. 4C → FIG. 4D, in the original bag body 40, the folded portion 46 is folded along the oblique welded portion 45 and bonded to the main portion 48. Thus, the outer bag body 30 is formed.
As described above, the cushioning packaging material is manufactured.

  In addition, not only in the above-described method, but before the original bag body 40 corresponding to the outer bag body 30 is fitted to the inner bag body 10, the folded portion 46 in the original bag body 40 is an oblique weld portion. After the outer bag body 30 is formed by being folded along 45 and bonded to the main portion 48, the outer bag body 30 may be fitted to the inner bag body 10.

Next, the usage method and effect of this buffer packaging material will be described.
As shown in FIG. 1, this shock-absorbing packaging material is used for an article having a portion protruding outward (referred to as a protruding portion) and having a complicated shape. That is, for example, it is used for an article having the protruding portion P1, an article having the protruding portion P2, and the like.
The buffer packaging material is fitted to the projecting portions P1 and P2 of such an article. That is, the protrusions P1 and P2 are accommodated in the accommodation space 11 of the buffer packaging material.
At that time, a particularly important portion of the protrusions P1 and P2 (portion in which the bubble 52 may not correspond in the double bubble cushion sheet 50) corresponds to a portion in which the bubble cushion sheet 50 is quadrupled. In this way, the buffer packaging material is fitted.

On the other hand, general parts (parts other than the protrusions P1 and P2) in such articles are packaged with a general bubble buffer sheet or the like as in the past.
In addition, if necessary, the above-described cushioning packaging material is adhered to the general bubble cushioning sheet in which the general part of the article is packaged in this way by an adhesive tape (not shown).
In this way, the buffer packaging material is prevented from being displaced such as coming out of the protrusions P1 and P2.

By using as described above, the protrusions P1 and P2 of the article are reliably protected.
That is, since the protrusions P1 and P2 of the article are covered by the bubble buffer sheet 50 in a double (or quadruple) manner, almost any part of the protrusions P1 and P2 (especially, the tip and side edges thereof). Also in the portion), the bubbles 52 of the bubble cushioning sheet 50 correspond to protect the protruding portions P1 and P2.
In addition, a general part of the article (parts other than the projecting portions P1 and P2) is packaged with a general bubble cushioning sheet or the like, so that useless space is prevented and space saving is achieved.

Moreover, in this buffer packaging material, since the narrow part 15 is formed in the accommodation space 11, since the inner dimension is gradually narrowed toward the back (bottom edge welding part 21) from the opening part 12, it is. Even if this cushion packaging material (inner bag body 10) is maximally fitted to the protruding portion P1 of the article, the bottom of the housing space 11 is the tip of the protruding portion P1 of the article. In some cases, the bottom edge welded portion 21 may not be reached (the protruding portion P1 in FIG. 1 is in such a state).
In that case, in the inner bag body 10, a surplus portion (bumping) occurs between the protruding portion P1 of the article and the bottom portion of the inner bag body 10 (this is also referred to as an inner surplus portion).
It can be said that there is an excess portion (bumping) between the protruding portion P1 of the article and the bottom portion of the cushioning packaging material (the bottom portion of the outer bag body 30 (bottom edge welding portion 41)) (this is the overall surplus). Part).
When the protruding portion P1 (the tip portion) receives an external force from the extension line of the protruding portion P1 toward the protruding portion P1 (the tip portion), the entire surplus portion is applied to the tip portion of the protruding portion P1. It will correspond.
For this reason, there is a higher possibility that the bubbles 52 of the bubble cushioning sheet 50 of the inner bag body 10 and the outer bag body 30 correspond to the tip portion of the protruding portion P1, and the protruding portion P1 (the tip portion) is more reliably secured. It will be protected.

  Moreover, in this buffer packaging material, the inner bag body 10 (the inner width and the outer width thereof) and the outer bag body 30 are also gradually increased in width toward the bottom portion (reference number omitted) from the opening 32. And since the width | variety of an outer side is narrow, an extra space does not arise between the outer bag body 30 (the outer side) and the inner bag body 10, and a space saving is achieved also in this respect.

Further, in this cushioning packaging material, both the inner bag body 10 and the outer bag body 30 are formed by the bubble cushioning sheet 50. In the inner bag body 10, the bubbles 52 are formed on the outer surface of the inner bag body 10. In the outer bag body 30, the bubbles 52 are formed on the inner surface of the outer bag body 30, and both the inner surface of the inner bag body 10 and the outer surface of the outer bag body 30 are smooth. That is, both the inner surface (the inner surface of the inner bag body 10) and the outer surface (the outer surface of the outer bag body 30) of the cushioning packaging material (the whole) are smooth.
Thus, since the inner surface of the cushioning packaging material is smooth, it is possible to smoothly fit the article (projecting parts P1, P2) to be packaged. There is. In addition, since the outer surface of the cushioning packaging material is smooth, there is an advantage that dust does not easily accumulate on the outer surface after packaging.

[Embodiment 2]
Next, Embodiment 2 of the present invention will be described with reference to FIGS.
As shown in FIG. 5 to FIG. 7, this shock-absorbing packaging material is formed by a pair of two-layered (double-folded) bubble cushioning sheets 150 and has a bag shape as a whole. In the basic state, it is substantially planar.
That is, the buffer packaging material includes the first surface forming sheet material 110A and the second surface forming sheet material 110B.
In both the first surface forming sheet material 110A and the second surface forming sheet material 110B, one rectangular bubble cushioning sheet 150 is folded on the basis of the center folding line, and is formed into a two-layer shape, which is substantially square. I am doing.

As shown in FIG. 8, each of the bubble cushioning sheets 150 forming the first surface forming sheet material 110A and the second surface forming sheet material 110B is formed of a soft thin synthetic resin, and only on one surface thereof. It has many bubbles 152 (air bags).
Each bubble buffer sheet 150 is folded as described above with the surface on which the bubbles 152 are formed facing inward.
As a result, both the first surface forming sheet material 110A and the second surface forming sheet material 110B are such that the inner bubble cushioning sheet 150 has a smooth inner surface and a plurality of bubbles 152 formed on the outer surface. The bubble cushioning sheet 150 has a smooth outer surface and a plurality of bubbles 152 formed on the inner surface.

As shown in FIG. 5 to FIG. 7, the buffer packaging material is a substantially square-shaped first surface forming sheet material 110 </ b> A and second surface forming sheet material 110 </ b> B other than one side corresponding to the above-described folding line. On the three sides, the two sheet materials 110A and 110B (four-layered bubble cushioning sheet 150) are thermally welded to form a bag shape.
In one side portion corresponding to the above-described folding line, the two sheet materials are not thermally welded, and an opening 112 is formed.

  In this manner, the cushioning packaging material is formed into a bag shape having the bottom edge welded portion 121, the pair of side edge welded portions 122, and the opening 112, and the inner space serves as the accommodating space 111. That is, it can be said that it has a bag shape having the opening 112 in one of the accommodation spaces 111. Moreover, the bottom edge welding part 121 corresponds to the “joining part” of the present invention.

And in this buffer packaging material (accommodating space 111), a gradually narrowing portion 115 is formed by a pair of gradually narrowing portion forming welded portions 125.
The pair of gradually narrowing portion welding portions 125 are provided symmetrically and extend obliquely in a direction approaching each other from the opening 112 toward the back (bottom edge welding portion 121).
In each of the gradually narrowing portion forming welded portions 125, both the first surface forming sheet material 110A and the second surface forming sheet material 110B (that is, the quadruple bubble cushioning sheet 150) that are stacked in two layers are all thermally bonded. Are combined.

The base end portion of each gradually narrowing portion forming welded portion 125 is located at a substantially central position in the depth direction (depth direction) of the cushioning packaging material and in the vicinity of each side edge portion (each side edge welded portion 122). ing.
Each gradually narrowed portion forming welded portion 125 is straight from the base end portion toward the center in the width direction (left-right direction) of the buffer packaging material as it goes toward the back of the buffer packaging material (accommodating space 111). In general, it extends diagonally.
The distal end portion of each gradually narrowing portion forming welded portion 125 is located in the vicinity of the center in the width direction of this cushioning packaging material (the portion before the center).
An intersection (virtual intersection) 126 formed by virtually extending each of the gradually narrowing welds 125 is closer to the opening 112 than the bottom edge weld 121 (joint). That is, there is a predetermined distance between the virtual intersection 126 and the bottom edge welded part 121 (joint part).

Next, the manufacturing method of this buffer packaging material is demonstrated.
First, as shown in FIG. 9A, a single bubble cushioning sheet 150 having a long and elongated belt shape is prepared. The roll-shaped bubble cushioning sheet 150 is supported by a position-fixed shaft (not shown).
Then, the bubble cushioning sheet 150 is pulled out and moved by a moving mechanism (not shown), and is folded in two by the triangular plate 160 and the slit device 162.
In this way, a two-layer roll is formed.

Next, as shown in FIG. 9B, a pair of two-layered bubble buffer sheets 150 supported by a pair of roll-shaped shafts (not shown) are moved by a moving mechanism (not shown). It is pulled out and moved, and a predetermined part is welded by the welding device 170.
That is, the welding apparatus 170 has a flat base 176, and has a bottom edge corresponding portion 171, a pair of side edge corresponding portions 172, and a pair of gradually narrowing portion corresponding portions 175 on the lower surface side of the base 176. ing. The bottom edge corresponding part 171, the pair of side edge corresponding parts 172, and the pair of gradually narrowing part corresponding parts 175 protrude downward from the base 176 and are in a high temperature state.
The welding device 170 can move up and down between an ascending position and a descending position on the upper side of the pair of two-layer bubble cushioning sheets 150.
A base 178 is associated with the welding apparatus 170. The base 178 is located below the pair of two-layer bubble cushioning sheets 150.

Then, the welding device 170 is lowered to the lowered position, and the welding device 170 (the bottom edge corresponding portion 171, the side edge corresponding portion 172, the gradually narrowing portion corresponding portion 175 in the high temperature state) and the table 178 (the upper surface) A pair of two-layered bubble cushioning sheets 150 are sandwiched to form a bottom edge welded portion 121, a side edge welded portion 122, and a gradually narrowed portion forming welded portion 125.
This operation is sequentially performed while a pair of two-layered bubble cushioning sheets 150 extending long are intermittently moved. In this way, a plurality (a large number) of the base materials for the cushioning packaging material are formed adjacent to each other in the length direction of the pair of two-layered bubble cushioning sheets 150.

Next, the boundary part of what becomes a basis of a plurality (a large number) of shock-absorbing packaging materials is cut by the cutter 180 among a pair of two-layered bubble cushioning sheets 150 that extend long.
That is, the cutter 180 and the base 188 are disposed on the downstream side of the welding device 170 and the base 178. Then, the cutter 180 is lowered from the raised position to the lowered position with respect to the two-layered bubble cushioning sheet 150 located above the table 188, and a predetermined part is cut.
This operation is also sequentially performed while a pair of two-layered bubble cushioning sheets 150 extending long are intermittently moved. Thus, a plurality (a large number) of cushion packaging materials are manufactured.

Next, the usage method and effect of this buffer packaging material will be described.
As shown in FIGS. 5 and 6, the cushioning packaging material is used for an article having a complicated shape with a portion protruding outward (referred to as a protruding portion). That is, for example, it is used for an article having the protruding portion P1, an article having the protruding portion P2, and the like.
The buffer packaging material is fitted to the projecting portions P1 and P2 of such an article. That is, the protrusions P1 and P2 are accommodated in the buffer packaging material (accommodating space 111).

On the other hand, general parts (parts other than the projecting parts P1 and P2) in such an article or the like are packaged with a general bubble cushion sheet 150 or the like as in the past.
In addition, if necessary, the above-described cushioning packaging material is adhered to the general bubble cushioning sheet 150 in which the general part of the article is packaged in this way by an adhesive tape (not shown).
In this way, the buffer packaging material is prevented from being displaced such as coming out of the protrusions P1 and P2.

By using as described above, the protrusions P1 and P2 of the article are reliably protected.
That is, since the protrusions P1 and P2 of the article are doubly covered with the bubble cushioning sheet 150, almost any part of the protrusions P1 and P2 (especially at the tip and side edges), The bubbles 152 of the bubble buffer sheet 150 correspond to protect the protrusions P1 and P2.
Further, a general portion of the article (portions other than the projecting portions P1 and P2) is packaged with a general bubble buffer sheet 150 or the like, so that useless space is prevented and space saving is achieved. .

Further, a gradually narrowing portion 115 is formed by a pair of gradually narrowing portion forming welded portions 125 in the buffer packaging material (accommodating space 111). That is, in the gradually narrowing portion 115, the width of the inner side gradually becomes narrower from the opening 112 toward the bottom (reference number omitted), so that this cushion packaging material is used as the protruding portion (P1, P2) of the article. Even if it is fitted to the maximum, the tip of the protruding part (P1, P2) of the article may not reach the bottom of the cushioning packaging material. Since there is a predetermined distance between the virtual intersection 126 formed by virtually extending the welded portion 125 and the bottom (bottom edge welded portion 121), the tip of the protruding portion P1 of the article does not reach the bottom. There will be many cases.
The protrusions P1 and P2 in FIGS. 5 and 6 are in such a state.

And in such a case, since the surplus part (bumping) arises between protrusion part P1, P2 of the article | item, and the bottom part of a buffer packaging material, the protrusion part P1, P2 (the front-end | tip part) When an external force is applied from the extension line of the projecting portions P1 and P2 toward the projecting portions P1 and P2 (the tip portions thereof), the surplus portion corresponds to the tip portions of the projecting portions P1 and P2.
For this reason, it is more likely that the air bubbles 152 of the double-sided air bubble cushioning sheets 150 (first surface forming sheet material 110A, second surface forming sheet material 110B) correspond to the tip portions of the projecting portions P1 and P2. Thus, the projecting portions P1 and P2 (the front end portions) are more reliably protected.

In addition, this cushioning packaging material is formed of a double-layered first surface forming sheet material 110A and second surface forming sheet material 110B (that is, formed by double-sided bubble cushioning sheets 150 on the front and back sides). However, in both the first surface forming sheet material 110A and the second surface forming sheet material 110B, the inner bubble cushioning sheet 150 has a smooth inner surface and a plurality of bubbles 152 formed on the outer surface. The bubble cushioning sheet 150 has a smooth outer surface, and a plurality of bubbles 152 are formed on the inner surface.
Thus, since the inner surface of the cushioning packaging material is smooth, it is possible to smoothly fit the article (projecting parts P1, P2) to be packaged. There is. In addition, since the outer surface of the cushioning packaging material is smooth, there is an advantage that dust does not easily accumulate on the outer surface after packaging.

[Modification 1 of Embodiment 2]
Next, Modification 1 of Embodiment 2 will be described focusing on differences from Embodiment 2.
In the shock-absorbing packaging material according to the second embodiment, as described above with reference to FIG. 7 and the like, each of the first surface-forming sheet material 110A and the second surface-forming sheet material 110B is folded into one sheet of air-bubble buffer sheet 150. The shape is formed.
On the other hand, in the first modification of the second embodiment, both the first surface forming sheet material 110A and the second surface forming sheet material 110B are overlapped with the two bubble buffer sheets 150, and the opening 112 (FIG. 5). The edge portion corresponding to (the side portion corresponding to the folding line in the second embodiment) is welded to each other.

The shock-absorbing packaging material of Modification 1 of Embodiment 2 is manufactured as follows.
First, two sheet-shaped bubble cushioning sheets 150 having a long and elongated belt shape are prepared, and one edge portion of the two bubble cushioning sheets 150 are welded to each other to form two-layered bubbles. The buffer sheet 150 is manufactured.
A pair (two) of the two-layered bubble cushioning sheets 150 are prepared, and the above-described embodiment is performed from the pair of two-layered bubble cushioning sheets 150 by the same process as described above with reference to FIG. 9B. The shock-absorbing packaging material of Modification 1 of 2 is manufactured.

[Modification 2 of Embodiment 2]
Next, a second modification of the second embodiment will be described focusing on differences from the second embodiment and the first modification.
In the shock-absorbing packaging material according to the second embodiment, as described above with reference to FIG. 7 and the like, each of the first surface-forming sheet material 110A and the second surface-forming sheet material 110B is folded into one sheet of air-bubble buffer sheet 150. The shape is formed.
On the other hand, in the second modification of the second embodiment, both the first surface forming sheet material 110A and the second surface forming sheet material 110B are formed in a state where the two bubble buffer sheets 150 are overlapped.
Further, as described above, in the first modification of the second embodiment, the edge corresponding to the opening 112 (FIG. 5) (corresponding to the folding line in the second embodiment) of the two stacked bubble cushioning sheets 150. In the modified example 2 of the second embodiment, the portions are not welded to each other.

The shock-absorbing packaging material of Modification 2 of Embodiment 2 is manufactured as follows.
Four sheet-like bubble cushioning sheets 150 each having a long strip shape and a roll shape are prepared.
Then, the four bubble cushioning sheets are pulled out and moved, and the four bubble cushioning sheets are stacked, and the modification of the second embodiment is performed by a process similar to the process described above with reference to FIG. 9B. The cushioning packaging material of Example 2 is manufactured.

[Modification 3 of Embodiment 2]
Next, Modification 3 of Embodiment 2 will be described based on FIG. 10 with a focus on differences from Embodiment 2 (including Modification 1 and Modification 2).
In the third modification of the second embodiment, the base end portions of the pair of gradually narrowing portion forming welded portions 225 are in contact with the respective side edge welded portions 122.
The pair of gradually narrowing portion forming welds 225 extend obliquely in a direction approaching each other from the opening 112 toward the back (bottom edge welded portion 121), and the tips thereof are in contact at an intersection 226. (Crossed).
In this modified example, the intersection 226 is closer to the opening 112 than the bottom edge welded portion 121 (joining portion). That is, there is a predetermined distance between the intersection 226 and the bottom edge welded part 121 (joint part).

Also in this cushioning packaging material, substantially the same effect as the cushioning packaging material of Embodiment 2 and the like can be obtained.
Furthermore, in this cushioning packaging material, a pair of gradually narrowing portion forming welded portions 225 intersect, and there is no gap between the tip portions of both gradually narrowing portion forming welded portions 225, so that the protruding portion When the projecting portion of the article having the shape is housed in the housing space 111, the tip of the projecting portion reaches the bottom edge welded portion 121 (joining portion) which is the innermost portion of the housing space 111. However, an excess portion (bumping) is surely generated between the tip end portion of the protruding portion and the bottom edge welded portion 121.

[Modification 4 of Embodiment 2]
Next, Modification 4 of Embodiment 2 will be described based on FIG. 11 with a focus on differences from Embodiment 2 (including Modification 1 and Modification 2).
In the modification 4 of Embodiment 2, a pair of gradually narrowing part formation welding part 325 is divided | segmented on the way.
That is, each gradually narrowing portion welded portion 325 is formed by the first divided welded portion 325a and the second divided welded portion 325b.
Also in this cushioning packaging material, substantially the same effect as the cushioning packaging material of Embodiment 2 and the like can be obtained.

It should be noted that the above is merely an embodiment of the present invention, and it is needless to say that the present invention can be implemented with various modifications based on the knowledge of those skilled in the art.
For example, the buffer packaging material may have a rectangular shape. Moreover, trapezoid shape may be sufficient.

It is a perspective view which shows the buffer packaging material of Embodiment 1 of this invention. In this figure, the description of the bubbles (air bags) of the bubble cushioning sheet is omitted. This also applies to FIGS. 2 and 4A to 4D. It is a disassembled perspective view which shows the buffer packaging material of Embodiment 1 of this invention. (A) is an expanded sectional view of the buffer packaging material of Embodiment 1 of the present invention. (B) is an expanded bottom view which shows the bubble buffer sheet which forms the buffer packaging material of Embodiment 1 of this invention. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 1 of this invention. Indicates the first stage. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 1 of this invention. The next stage of FIG. 4A is shown. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 1 of this invention. FIG. 4B shows the next stage of FIG. 4B. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 1 of this invention. FIG. 4C shows the next stage of FIG. 4C. It is a perspective view which shows the buffer packaging material of Embodiment 2 of this invention. In this figure, the description of the bubbles (air bags) of the bubble cushioning sheet is omitted. This also applies to FIGS. 6, 7, 9A, and 9B. It is a figure which shows the buffer packaging material of Embodiment 2 of this invention. (A) is a top view, (b) is BB sectional drawing in (a), (c) is CC sectional drawing in (a). It is a disassembled perspective view which shows the buffer packaging material of Embodiment 2 of this invention. (A) is an expanded sectional view of the buffer packaging material of Embodiment 2 of the present invention. (B) is an expanded bottom view which shows the bubble buffer sheet which forms the buffer packaging material of Embodiment 2 of this invention. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 2 of this invention. Indicates the first stage. It is a perspective view which shows the manufacturing method of the buffer packaging material of Embodiment 2 of this invention. The next stage of FIG. 9A is shown. It is a top view which shows the buffer packaging material of the modification 3 of Embodiment 2 of this invention. It is a top view which shows the buffer packaging material of the modification 4 of Embodiment 2 of this invention.

Explanation of symbols

10 inner bag body 11 accommodation space 12 inner bag body opening (opening)
15 Gradually narrow part 21 Bottom edge welded part (bottom edge part)
25 Diagonal weld (folding line)
26 Folded portion 28 Main portion 30 Outer bag body 32 Outer bag body opening portion 41 Bottom edge welded portion (bottom edge portion)
45 Diagonal weld (folding line)
46 Folded portion 48 Main portion 50 Bubble cushioning sheet 52 Bubble 111 Accommodating space 112 Opening portion 115 Gradually narrow portion 121 Bottom edge welded portion (joining portion)
125 Gradually forming weld zone 150 Bubble buffer sheet 152 Bubble

Claims (5)

A buffer wrapping material that wraps the article or part of the article while accommodating the article or part thereof in the accommodation space,
Formed by a plurality of stacked bubble buffer sheets, forming a bag shape having an opening in one of the accommodation spaces,
In the housing space, a gradually narrowing portion is formed in which the inner dimension of the housing space gradually decreases along the direction from the opening toward the back of the housing space.
Buffer packaging material. The cushioning packaging material according to claim 1,
In the basic state, which is almost planar,
A pair of gradually narrowing part forming welds in which a part of the pair of bubble cushion sheets facing each other across the accommodation space in which the article or a part thereof is accommodated are welded,
At least a part of the pair of gradually narrowing portion forming welds extends in a direction approaching each other from the opening toward the back of the accommodation space, and the gradually narrowing portion is formed.
Buffer packaging material. The buffer packaging material according to claim 2,
A pair of gradually narrowing part forming welded parts that form the gradually narrowing part or at least one of them is formed on the back side of an intersection formed by virtually extending the paired bubble cushioning sheet. A coupling portion that couples at least the outermost pair of bubble buffer sheets is formed.
Buffer packaging material. The shock-absorbing packaging material according to claim 1 or 2,
An inner bag body formed by a bubble buffer sheet and having an inner bag body opening corresponding to the opening on one side;
Formed by a bubble buffer sheet, and has an outer bag body having an outer bag body opening on one side,
The inner bag body and the outer bag body are overlapped with the inner bag body being accommodated with respect to the outer bag body while the inner bag body opening and the outer bag body opening correspond to each other. And
The inner bag body is in a basic state that is substantially planar, and based on a rectangular original bag body whose one side corresponds to the inner bag body opening, its bottom edge and the end of the inner bag body opening Or, with reference to a folding line that linearly connects to the vicinity thereof, the folded portion that is the portion on the opposite side to the inner bag body opening is in relation to the main portion that is the portion on the inner bag body opening side. It is folded and bonded to the main portion, the space inside the inner bag body corresponds to the housing space, and the gradually narrowing portion is formed by the folding line,
The outer bag body, in a basic state corresponding to the inner bag body, in a basic state that is substantially planar, has a bottom edge portion based on a rectangular original bag body whose one side corresponds to the outer bag body opening. The side opposite to the outer bag body opening with reference to a folding line that linearly connects the end of the outer bag body opening or the bottom edge thereof and the end of the outer bag body opening or the vicinity thereof. The folded portion that is the portion of the outer bag body is folded with respect to the main portion that is the portion on the outer bag body opening side and bonded to the main portion.
Buffer packaging material. The buffer packaging material according to any one of claims 1 to 4,
Among the plurality of the air bubble cushioning sheets, the innermost air bubble cushioning sheet has a smooth inner surface and a plurality of air bubbles formed on the outer surface,
Out of the plurality of stacked bubble buffer sheets, the outermost bubble buffer sheet has a smooth outer surface and a plurality of bubbles formed on the inner surface.
Buffer packaging material.

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