JP2015093719A - Air cell cushioning material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cell cushioning material capable of effectively protecting an article from impact during transportation even when an article with an irregular shape having a projection part and the like is transported while being placed in a packing box.SOLUTION: An air cell cushioning material 1 comprises: an arcuate cushioning part 10 formed of substantially arcuate air cells 11; and a sheet-like cushioning part 20 made of a film for connecting both sides of the arcuate cushioning part 10. The arcuate cushioning part 10 is formed by arranging a plurality of air cells 11 side by side and bending the air cells 11 in an arcuate shape. The sheet-like cushioning part 20 is formed shorter than the arcuate cushioning part 10 and connected to the arcuate cushioning part 10. Thereby, at the time of filling air, both ends of the arcuate cushioning part 10 are pulled in a bending direction, tension in a longitudinal direction is generated in the arcuate cushioning part 10 and sheet-like cushioning part 20, and the air cell cushioning material 1 is formed in a substantially arch shape.

Description

  The present invention relates to an air cell (air bag) type air cell cushioning material that packs and packs articles with a cushioning function, and more particularly, an air cell buffer that packs and packs articles in a new and unprecedented form for buffer protection. Regarding materials.

  Conventionally, as a packaging material having a cushioning function by air, a film-made air cell cushioning material in which air is injected into the cell is known from Patent Document 1 below. This air-injection type air cell cushioning material is formed by heat-sealing two superposed films along vertical and horizontal heat-sealing lines, and a number of air cells communicating with each other. An air inlet having a simple structure is provided. And after injecting air from an inlet to an air cell at the time of use, the inlet is sealed and used.

  Such an air cell cushioning material is usually formed as a sheet-like packaging material having a structure in which a large number of air cells are arranged side by side, and a user puts an article in a packing box such as a cardboard box and transports it. In this case, the air cell cushioning material is inserted into the gap between the article and the packaging box while air is injected into the air cell, or the entire article is enclosed and packed by the bag-shaped air cell cushioning material. Put the packing box in a truck.

JP 2005-509568 Gazette

  However, when packing an entire article using a bag-shaped air cell cushioning material, if the shape is similar to a packing box such as a rectangular parallelepiped that the article is packed in, it will not cause much problem, but the protrusion on the deformed article If a bag-shaped air cell cushioning material with air cells arranged side by side is packed in a bag-shaped air cell cushioning material, the deformed article including the projection is safe. It is difficult to package in a case, and when vibration or impact is applied during transportation, a load due to a bending moment is applied to the projections and the like, which may damage the portion.

  In addition, the article is enclosed and packed with a sheet-like air cell cushioning material, the article is put in a packing box, and further, the air cell cushioning material is inserted into the gap between the article and the inner surface of the box for packing. However, if there is a large gap between the article and the box in which it is placed, a large amount of air cell cushioning material must be pushed into the packaging box to ensure that the article is protected from impact during transportation. There was a problem that the amount of air cell buffer used increased. In addition, as described above, if the article has a protrusion, it is difficult to bend the air cell cushioning material according to the shape of the protrusion, so the protrusion can be well surrounded by the air cell cushioning material and packed. It is difficult, and if vibration or impact is applied during transportation, the projections may be damaged.

  The present invention solves the above-described problems, and even when an irregularly shaped article such as a protrusion is placed in a packaging box for transportation, the article can be effectively protected from impact during transportation. An object of the present invention is to provide an air cell cushioning material.

The air cell cushioning material according to the present invention heat-seals the laminated film along the heat-sealing line, forms a plurality of air cells inside, provides an air inlet at the end, and from the air inlet In the air cell buffer material for injecting air into the air cell, an arc-shaped buffer portion formed by the substantially arc-shaped air cell, and a sheet-shaped buffer portion made of a film connecting both sides of the arc-shaped buffer portion; With
The length of the sheet-shaped buffer portion is shorter than the arc-shaped buffer portion, and when the air cell is filled with air, both ends of the arc-shaped buffer portion are pulled in the bending direction, and the arc-shaped buffer portion and the sheet The shape buffer portion is formed in a substantially arcuate shape by generating a tension in the longitudinal direction.

  According to the air cell cushioning material of the present invention, when an article is transported in a rectangular parallelepiped or cubic packaging box, for example, the sheet-like cushioning portion is directed to each inner wall surface side in the packaging box, and the air cell of the arc-shaped cushioning portion. Is inserted into the space between the inner 4th surface and the 6th surface in the packaging box so that the product is directed to the product side, and each surface of the product is supported and packaged by the air cells of these arc-shaped buffer portions. . Articles in the packing box are supported by the arcuate curved surface of the air cell of the arcuate buffer part, that is, the extremely small area of the arcuate air cell and with an appropriate elastic force. Is done.

  As a result, even if the article has a protrusion, the article can be safely supported at a site where the protrusion of the article is removed with a very small amount of air cell cushioning material. When transporting, even if vibration or impact is applied to the packaging box, it can be safely protected.

  On the other hand, in another usage pattern, two air cell cushioning materials are overlapped with each sheet-like cushioning portion inside, and an article is placed between the two sheet-like cushioning portions, and the article is placed by the sheet-like cushioning portion. Surround and pack. Since the two sheet-like buffer parts are moderately tensioned by the elastic force of the arc-shaped buffer part of the air cell, the article has a moderate elastic force by the two sheet-like buffer parts. Is enclosed and supported, and the periphery of the packaged article is surrounded and supported by an arcuate buffer. For this reason, even if vibration or impact is applied to the packaging box during transportation, the air cell cushioning material absorbs vibration and impact well, and even irregular shaped articles with protrusions are effective from vibration and impact during transportation. Can be protected.

  Here, a check valve made of film is provided at the end of each air cell of the arc-shaped buffer portion, and an air injection path communicating with the air inlet is provided on the inlet side of the check valve. Can be configured. According to this, air is easily injected into each air cell of the arc-shaped buffer portion by a hand pump through an air inlet, an air injection path, and a check valve, and the air pressure of each air cell is maintained. Can do.

  Moreover, the film which comprises the said air cell buffer material overlaps two films, heat-seals two films along a heat-fusion line, comprises the said circular-arc-shaped buffer part, the said sheet form The buffer portion is formed by extending the two films in an overlapped state, and the tip portions of the two films have a length shorter than the length in the longitudinal direction of the arc-shaped buffer portion. It can be configured by heat-sealing to the end of the buffer portion.

  Moreover, the film which comprises the said air cell buffer material overlaps two films, heat-seals two films along a heat-fusion line, comprises the said circular-arc-shaped buffer part, the said sheet form The buffer portion is formed by extending only one of the two films, and the tip portion of the one film is shorter than the length of the arc-shaped buffer portion in the longitudinal direction. It can be configured by heat-sealing to the end of the arc-shaped buffer portion.

  According to the air cell cushioning material of the present invention, it is possible to safely support and protect the article with a relatively small amount of cushioning material, and even if the irregular shaped article has a protrusion, vibration and shock during transportation. The article can be effectively protected from.

It is a perspective view which shows an example of the air cell shock absorbing material of this invention. It is a front view of an air cell shock absorbing material. It is a right view of an air cell shock absorbing material. FIG. 4 is a schematic IV-IV cross-sectional view of FIG. 2. It is a top view of the air cell shock absorbing material of the unfolding state. It is a front view of the air cell shock absorbing material of the expansion | deployment state. It is a left view of an unfolded state. It is a section explanatory view of a check valve provided in an arcuate buffer part. It is a schematic plan view showing a use state. It is a schematic plan view showing a use state. It is a schematic plan view showing a use state.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show an air cell cushioning material 1 according to an embodiment of the present invention. In general, the air cell cushioning material 1 heats a first film 2 and a second film 3 that are overlapped with each other. Heat sealing is performed along the fusion line, and long air cells (bag portions) 11 are arranged side by side inside. The air cell 11 portions serve as arc-shaped buffer portions 10, and both ends thereof are sheet-like. By connecting with the buffer part 20, it is bent in an arc shape.

  That is, as shown in FIGS. 1 to 4, the air cell cushioning material 1 is a film sheet that connects the arcuate buffer part 10 formed by the substantially arcuate air cell 11 and both sides of the arcuate buffer part 10. It is comprised from the shape buffer part 20. FIG. The arcuate buffer 10 is formed by, for example, arranging five air cells 11 side by side and bending the air cells 11 into an arc shape. The sheet-shaped buffer portion 20 is formed so that the length in the longitudinal direction is shorter than that of the arc-shaped buffer portion 10, thereby connecting the both ends of the arc-shaped buffer portion 10 when the air cell 11 is filled with air. By pulling, longitudinal tension is generated in the arc-shaped cushioning portion 10 and the sheet-like cushioning portion 20, and the air cell cushioning material 1 is formed in a substantially arcuate shape.

  5 to 7 and FIG. 8, the first film 2 and the second film 3 constituting the air cell cushioning material 1 are overlapped, and the surrounding heat-sealing wire 12 and the air are overlapped with each other. Two films are heat-sealed along the thermal fusion boundary line 13 between the cells 11, and five rod-shaped air cells 11 are arranged in the arcuate buffer portion 10 along the longitudinal direction. doing.

  5 to 7, for the sake of explanation, for the sake of easy understanding, development views in a state where the air cell 11 is filled with air and expanded are shown. As described above, air is not injected into the expanded air cell 11. That is, at the time of manufacture, first, the arc-shaped buffer part (state in which air is released) 10 and the sheet-shaped buffer part 20 are formed in the developed shape as shown in FIGS. 5 to 7 from the first film 2 and the second film 3. Next, the heat fusion bonding portion 5 at the end portion of the sheet-like buffer portion 20 is heat-sealed to the end portion of the arc-like buffer portion (the state in which air is released) 10. In use, the air cell 11 of the arc-shaped buffer portion 10 is filled with air, whereby a tension in the shortening direction is applied to the arc-shaped buffer portion 10 and bent into an arc shape. Is formed into an arcuate shape as shown in FIG.

  As shown in FIGS. 5 to 7, the sheet-like buffer portion 20 is a rectangular shape in which the first film 2 and the second film 3 are overlapped and the films are extended from the end of the arc-shaped buffer portion 10. It is formed in a shape. The length of the sheet-shaped buffer portion 20 formed in a planar shape in the longitudinal direction is shorter than the length of the arc-shaped buffer portion 10 in the longitudinal direction.

  And at the time of manufacture, the sheet-like buffer part 20 heat-seal | fuses the heat-fusion coupling | bond part 5 of the front-end | tip of the 1st film 2 and the 2nd film 3 to the edge part of the circular-arc-shaped buffer part 10. FIG. Thereby, when the air cell 11 of the arc-shaped buffer portion 10 is filled with air, the arc-shaped buffer portion 10 is bent into an arc shape as shown in FIG. Is formed.

  As described above, the arc-shaped buffer portion 10 is a rod-shaped air cell in which the first film 2 and the second film 3 are overlapped and thermally fused along the thermal fusion line 12 and the thermal fusion boundary line 13. 11, an air inlet 17 and an air injection path 18 are provided at the end of the arcuate buffer 10 as shown in FIG. The air injection port 17 is provided open at the end thereof, and the air injection path 18 communicates with the air injection port 17 and is formed in a direction transverse to the end of the arcuate buffer portion 10.

  A check valve 19 made of a film is provided at the end of each air cell 11, and the inlet side of each check valve 19 communicates with the air injection path 18. Thus, when a hand pump nozzle or the like is inserted into the air inlet 17 and air is injected, air is injected into each air cell 11 from the air inlet 17 and the air injection path 18 through the check valve 19. It has become.

  As shown in FIG. 8, the check valve 19 provided at the end of each air cell 11 has two valve films 19 a superimposed on the first film 2 and the second film 3, and a plurality of gaps between the films are provided. When the heat cell is partially heat-sealed, a narrow valve passage is formed between the valve films 19a, air is injected into the air cell 11 through the valve passage, and the air cell 11 expands. The valve film 19a in the valve passage is brought into close contact with each other by the air pressure, and the backflow of air is prevented.

  Thereby, when each air cell 11 of the arc-shaped buffer portion 10 of the air cell cushioning material 1 is filled with air, the air is supplied from the air inlet 17 to the inlet side of each check valve 19 through the air inlet path 18. When air is injected into each air cell 11 and the filling of air is completed, the air pressure entered between the outside of the two valve films 19a and the inside of the first film 2 or the second film 3 The two valve films 19a are brought into close contact with each other to prevent the air filled in the air cell 11 from being discharged.

  As the first film 2, the second film 3, and the two valve films 19a, a single-layer plastic film can be used. From the viewpoint of gas barrier properties and heat sealing properties, the functionality of two or more layers is used. It is preferable to use a film.

  For example, when a two-layer plastic film is used for the first film 2 and the second film 3, nylon having gas barrier properties can be used for the outer layer, and LLDPE can be used for the inner layer. In addition, when using a three-layer plastic film, the first film 2 and the second film 3 are heat-sealed by using LLDPE for the outer layer and nylon or the like for the inner layer. It is also possible to apply heat fusion in a state in which the first film 2 and the second film 3 that are attached are further folded.

  In the case of the air cell cushioning material 1 for packing and packaging, a plastic film having a thickness of about 20 μm to about 300 μm can be usually used for the first film 2, the second film 3, and the valve film 19 a, When the air cell cushioning material 1 is used for cushioning a large article, a thicker plastic sheet can also be used.

  The check valve 19 is formed by heat-sealing two valve films 19a on the inside of the first film 2 and the second film 3, but one or three valve films on the inside. The reverse of a structure in which a thinly bent check valve passage is formed by heat fusion between the first film 2 and the second film 3 without using a check valve having a heat fusion structure or a valve film. A stop valve may be provided at the end of the air cell cushioning material 1.

  When the air cell cushioning material 1 having the above configuration is manufactured, first, as shown in a development view of FIG. 5, the first film 2 and the second film 3 along the heat fusion line 12 and the heat fusion boundary line 13. Are fused to form an arcuate buffer portion 10 in which five air cells 11 are arranged side by side. And in the state before filling with air, the heat fusion bonding part 5 at the tip of the sheet-like buffer part 20 extended from the arc-shaped buffer part 10 is bonded to the end part of the arc-shaped buffer part 10 by heat fusion. The air cell cushioning material 1 is manufactured by bonding.

  When the air cell cushioning material 1 is used, air is filled into the air cell 11 of the arcuate buffering portion 10. For air injection, a nozzle of an air injection machine such as a hand pump is inserted into the air injection port 17, and air is injected into each air cell 11 through the air injection port 17, the air injection path 18, and the check valve 19. Fill.

  At this time, since the length of the sheet-shaped buffer portion 20 is shorter than the length of the arc-shaped buffer portion 10, the arc-shaped buffer portion 10 becomes a sheet-like shape as the air cell 11 of the arc-shaped buffer portion 10 expands. As shown in FIG. 2, the arcuate buffer portion 10 is bent into an arc shape, and the air cell cushioning material 1 has an arcuate shape as a whole.

  In this state, by setting the air pressure in the air cell 11 to an appropriate pressure, the air cell cushioning material 1 has good elasticity with respect to the load in the vertical and horizontal directions (particularly the load in the vertical direction) in FIG. Become. That is, since the air pressure in the air cell 11 of the arc-shaped buffer portion 10 acts in a direction to return the arc-shaped air cell 11 to a straight line, the arc-shaped air cell 11 has an up-down direction or a left-right direction in FIG. A good spring elastic force is generated in the direction, and when each air cell 11 receives a bending load, the elastic force acts so as to return to the original shape. The air filled in the air cell 11 is well held in the cell by the action of the check valve 19 at the end of each air cell 11, and the pressure in the air cell 11 is kept substantially constant for a long time. Therefore, the elasticity of the arc-shaped buffer portion 10 is maintained well.

  When the article B is transported in the packaging box A, the air cell cushioning material 1 is inserted around the article B in the packaging box A and packed as shown in FIG. The sheet-like buffer portion 20 is brought into contact with four to six surfaces of the inner wall, and is packed so that each surface of the article B is held by the curved surface of the arc-shaped buffer portion 10.

  At this time, as shown in FIG. 9, the article B is supported on the surrounding four to six faces only by the substantially central portion of the curved surface of the arc-shaped cushioning part 10 of the air cell cushioning material 1. Even if there is a protrusion Bb as shown in FIG. 9, the protrusion Bb is held in the space in the packaging box A, and the article B is well supported in the packaging box A together with the protrusion Bb. It becomes.

  As a result, the article B can be packed and supported by a much smaller amount of the air cell cushioning material 1 than when a deformed article with protrusions is packaged using a conventional air cell cushioning material, and transported. In the middle, when vibration or impact is applied to the packaging box A, the vibration or impact is absorbed by the air cell cushioning material 1 supporting the periphery of the article B, and the article can be transported safely.

  Further, as shown in FIG. 9, since the article B is supported around the article B in the packaging box A leaving a lot of space, even if the article B has the projection Bb, the projection Bb The article B can be favorably supported at the removed position, and the article during transportation can be favorably supported and protected by the small amount of the air cell cushioning material 1.

  In this way, when the article B packed in the packing box A is transported by transport means such as a truck, vibrations and impacts generated during transport are caused by the elasticity of the arc-shaped buffer portion 10 of the air cell cushioning material 1. Since it is well absorbed by the deformation, the article B with the protrusion Bb can be safely transported.

  In the packaging shown in FIG. 9, the four to six surfaces around the article B are supported by the air cell cushioning material 1, but two or three of the two or three surfaces around the article B are provided. It can also be packed so as to be supported by a single air cell cushioning material 1.

  Furthermore, the air cell cushioning material 1 having the above-described configuration is configured so that the end of the arc-shaped cushioning portion 10 is substantially on the air cell 11 side as shown in FIG. 10 according to the size of the article B and the size of the packaging box A. It can also be used by being bent at a right angle and inserted into the packaging box A in that state. When the end of the arcuate buffer 10 is bent and used, the end can be easily bent by adjusting the air pressure charged in the air cell 11. In addition, in the folded state, a force to return to the linear state acts on each air cell 11, and therefore, a good elastic force is generated in each arcuate buffer portion 10 in the vertical and horizontal directions in FIG. 10. For this reason, the article B packed in the packing box A is favorably supported by the spring-like elasticity of the air cell cushioning material 1 and can be protected from vibration and impact.

  FIG. 11 shows a case where the article B is packed in another packing form using the air cell cushioning material 1. In this case, the article B having a substantially hexagonal plane is packed using the two air cell cushioning materials 1, inserted into the rectangular parallelepiped packing box A, and packed.

  The two air cell cushioning materials 1 put the article B inside the superposed sheet-like cushioning portion 20 so that the arc-like cushioning portion 10 is outside and the sheet-like cushioning portion 20 is superposed inside. So as to pack. Thus, as shown in FIG. 11, the article B is packed in a state in which both sides thereof are surrounded by the sheet-like buffering portion 20, and in this state, together with the two arc-shaped buffering portions 10 in the rectangular parallelepiped packing box A. The article B is inserted with the inner wall surface side of the packaging box A being inserted.

  As shown in FIG. 10, the sheet-like cushioning portion 20 of the air cell cushioning material 1 on both sides is moderately tensioned by the arc-shaped cushioning portion 10 that is going to return to a straight shape. The article B is surrounded by the sheet-like buffer portions 20 on both sides, and is supported with an appropriate elastic force. Therefore, similarly to the above, when the article B packed in the packaging box A is transported, if the packaging box A is subjected to vibration or impact, the arc-shaped cushioning portion 10 or the sheet cushioning of the air cell cushioning material 1 is used. The elastic deformation of the portion 20 absorbs the vibrations and shocks, and the article B is well held in the space of the packaging box A and can be transported safely. In addition, as described above, the air cell cushioning material 1 supports the article B while leaving a lot of space around the article B in the packaging box A. Therefore, the air cell cushioning material 1 is used during packaging as compared with the conventional air cushioning material. The number and amount of air cell cushioning materials 1 to be performed can be greatly reduced.

  In the above embodiment, the sheet-like buffer 20 is formed by overlapping the first film 2 and the second film 3, but either one of the first film 2 or the second film 3 is formed as a sheet-like buffer. It can also be used as 20. In this case, only one of the first film 2 and the second film 3 used in the arc-shaped buffer portion 10 is extended, and the length thereof is set in the longitudinal direction of the arc-shaped buffer portion 10. The front end portion is heat-sealed to the end portion of the arcuate buffer portion 10.

DESCRIPTION OF SYMBOLS 1 Air cell shock absorbing material 2 1st film 3 2nd film 5 Heat-fusion joining part 10 Arc-shaped buffer part 11 Air cell 12 Heat-welding line 13 Heat-fusion boundary line 17 Air inlet 18 Air injection path 19 Check valve 19a Valve film 20 Sheet buffer

Claims (4)

Air that heat-seals the laminated film along the heat-sealing line, forms a plurality of air cells inside, provides an air inlet at the end, and injects air from the air inlet into the air cell In the cell cushioning material,
An arc-shaped buffer portion formed by the substantially arc-shaped air cell;
A sheet-shaped buffer portion made of a film connecting both sides of the arc-shaped buffer portion;
With
The arcuate buffer portion is formed by juxtaposing a plurality of the air cells and bending the air cells into an arc shape,
The length of the sheet-shaped buffer portion is shorter than the arc-shaped buffer portion, and when the air cell is filled with air, both ends of the arc-shaped buffer portion are pulled in the bending direction, and the arc-shaped buffer portion and the sheet An air cell cushioning material, characterized in that the buffer portion is formed in a substantially arcuate shape by generating tension in the longitudinal direction.   A check valve made of a film is provided at an end of each air cell of the arc-shaped buffer portion, and an air injection path communicating with the air injection port is provided on the inlet side of the check valve. The air cell cushioning material according to claim 1.   The arc-shaped buffer portion is formed by stacking two films and heat-sealing the two films along a heat-sealing line, and the sheet-shaped buffer portion is formed by stacking the two films. In this state, the arc-shaped buffer portion is formed so as to extend from the end of the arc-shaped buffer portion, and the leading ends of the two films are shorter than the length in the longitudinal direction of the arc-shaped buffer portion. The air cell cushioning material according to claim 1, wherein the air cell cushioning material is heat-sealed to the end portion.   The arc-shaped buffer portion is formed by superimposing two films and heat-sealing the two films along a heat-sealing line, and the sheet-shaped buffer portion is one of the two films. A sheet of film is formed by extending from the end of the arc-shaped buffer portion as it is, and the tip of the one film has a length shorter than the length of the arc-shaped buffer portion in the longitudinal direction. The air cell cushioning material according to claim 1, wherein the air cell cushioning material is heat-sealed to an end of the portion.

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