JP5146893B1 - Block-type air-filled cushioning material and manufacturing method thereof - Google Patents

Abstract

The present invention provides a block-type air-filled cushioning material that is lightweight, excellent in strength, can be used with versatility, and has a low manufacturing cost, and a method for manufacturing the same.
A pair of contact surface portions 11 formed on a surface in contact with an object to be buffered and opposed in a rectangular shape are provided. A block-shaped bag body 10 is constituted by the side surface portion 12 continuously provided on the peripheral side surface of the contact surface portion 11. A gusset portion 13 is formed on each of the side surface portions 12. A bridge 15 for connecting the contact surface portions 11 to each other is provided inside the bag body 10. The bridge 15 is configured to restrict the swelling between the contact surface portions 11.
[Selection] Figure 1

Description

  The present invention relates to an air-filled cushioning material made of synthetic resin used for storing and transporting articles, and more particularly to a block-type air-filled cushioning material that is lightweight and excellent in strength and a method for manufacturing the same.

  A dunnage back as described in Patent Document 1 is known as an air-filled cushioning material used for transportation of articles. This dunnage bag is formed by laminating two elastic cloths to form a sealed bag-like material, and by attaching valves for air supply and exhaust to the bag-like material. The dunnage bag is inserted and disposed in the gap, and the dunnage bag is inflated by sending air from the air supply valve into the dunnage bag, thereby preventing the movement and breakage of the article.

  Moreover, the air cushioning material of patent document 2 is proposed as a cushioning material which wraps articles | goods inside. This cushioning material was provided on the side edge of the air cushioning material after the packaged body was inserted into the air cushioning material of the synthetic resin film made into two sheets, and was put in a predetermined packaging container in this state. Air is injected from the air inlet to expand the entire air chamber, and the article is moved by pressing the outside of the air cushioning material against the inner wall of the packaging container while the packaged body is wrapped inside the air cushioning material. And prevent damage.

  On the other hand, the bag-in-box described in Patent Document 3 is used for transporting and storing various liquids such as mineral water. This bag-in-box has a plastic foldable bag or the like as an interior and a cardboard box on the exterior. For this reason, the interior plastic is responsible for the water resistance of the liquid content, while the exterior is responsible for the rigidity required for transportation and storage. Patent Document 3 describes a method for manufacturing a bag used for the interior of this bag-in-box.

JP-A-8-80973 JP 2006-117411 A Japanese Patent Laid-Open No. 7-314587

  Since the dunnage bag described in Patent Document 1 is provided with a rubberized cloth, when a maximum of four gussets are inserted into four sides to form a block shape, it is possible to provide a dunnage bag having excellent strength and functionality. it can. However, since the rubberized cloth is processed and formed, the manufacturing cost becomes extremely high. Moreover, in order to put four gussets in the block shape, the material of the rubberized cloth increases, so there is also a disadvantage that the weight becomes extremely heavy as a cushioning material.

  Many dunnage bags made of a synthetic resin material are also commercially available, but a bag is formed by bonding two sheets together with a heat seal. For this reason, the central portion of the bag body swells, and the portion close to the heat seal has a flat shape, resulting in an air layer having a substantially lens-shaped cross section. In such a lens shape, the central part of the sandwiching surface of the cushioning material swells more than the surroundings, so that the part sandwiching the article is warped. Therefore, even if the article is sandwiched in the central portion of the cushioning material, the central portion is warped, so that the article gradually shifts to the periphery. And the dunnage bag formed with the synthetic resin material was inferior in strength compared with the dunnage bag provided with the rubberized cloth as described in Patent Document 1.

  In addition, since the cushioning material as described in Patent Document 2 wraps the packaged body inside and presses the outer side thereof against the inner wall of the packaging container, this cushioning material prevents movement and damage of the article. Articles that can be stored in the material are limited to the shape and size of the box, and cannot be used for articles that exceed the size of the box, resulting in a lack of versatility.

  Furthermore, since the bag-in-box described in Patent Document 3 is made of a plastic foldable bag and the like, and a cardboard box is mounted on the bag, it is difficult to use the bag for the interior as a cushioning material. It is. Even if the interior material can be used as a cushioning material, the articles that can be stored are limited to the outer corrugated cardboard box. Therefore, this kind of cushioning material cannot cope with the general-purpose size of the article.

  Therefore, the present invention was created to solve the above-described problems, and is a block-type air-filled cushioning material that is lightweight and excellent in strength, and that can be used with versatility and is low in manufacturing cost, and a manufacturing method thereof It is intended to provide.

In order to achieve the above-mentioned object, the first means in the present invention is a bag made of synthetic resin that is used by injecting air, and is formed on the surface in contact with the buffered object to form a rectangular shape. The pair of contact surface portions 11 and the side surface portion 12 connected to the peripheral side surface of the contact surface portion 11 constitute a block-shaped bag body 10, and the right and left side surface portions 12A and the front and rear side surface portions 12B are respectively provided with gusset portions 13. each contact portion 11 is configured so as to expand and maintain the planar state by forming, a cushioning material provided with a bridge 15 for connecting the inside contact surface 11 mutual bag 10, the bridge 15, the film Two or more sheets or sheets are superposed, and the bridge 15 is provided parallel to the left and right side surfaces 12A of the bag body 10 at one or a plurality of locations between the contact surface portions 11, and the contact surface portion. 11 and front and rear side surface 12 DOO periphery is adhered to, so as to regulate the expansion of the contact surface portion 11 cross at a bridge 15 that perforated in the air through-hole 15A so as to be able to enclose the air inside the bag body 10 which is partitioned by the bridge 15 It is configured to increase the strength of the bag body 10.

The second means is a method of manufacturing a cushioning material that is used by injecting air into a synthetic resin bag body 10, and the belt-like surface film 1 </ b> A and the bag body 10 that form the contact surface portion 11 </ b> A on the surface of the bag body 10. A belt-like back film 1B that forms the contact surface portion 11B on the back surface is provided, a bridge forming member 4 that forms a bridge 15 is provided between the surface film 1A and the back film 1B, and between the front film 1A and the back film 1B. The bridge forming step 100 for arranging the bridge forming member 4 and the belt-like film are folded into a flat tube shape, and the left and right gusset portions 13A are formed on the left and right side surface portions 12A of the bag body 10 with the bridge forming member 4 interposed therebetween. A horizontal gusset forming step 200 is provided in which a horizontal gusset forming material 3 is provided, and a pair of the horizontal gusset forming material 3 is arranged between the front film 1A and the back film 1B, and the belt-like film is elongated in the longitudinal direction. The front / rear gusset molding material 2 is provided by folding it along the front / rear gusset 2, and the front / rear gusset molding material 2 is disposed between the front film 1 </ b> A and the back film 1 </ b> B. A front / rear gusset forming step 300 for forming 13B, a blowing member 14 made of synthetic resin, and a blowing member forming step 400 for arranging the blowing member 14 at one of the joining portions of the front film 1A or the back film 1B; A vertical sealing process 500 for thermocompression bonding the horizontal gusset molding material 3 and the bridge forming member 4 to the film 1A and the back film 1B, and a horizontal sealing process 600 for thermocompression bonding the front and rear gusset molding material 2 to the surface film 1A and the back film 1B; , and a cutting step 700 of forming a bag body 10 by cutting the transverse seal portion and the longitudinal sealing portion of the lateral gusset forming member 3 before and after the gusset forming material 2, prior In the gusset forming process 300, the end of the bridge forming member 4 formed by folding the belt-like film in half along the longitudinal direction is overlapped and folded into the front and rear gusset molding material 2, and in the vertical sealing process 500, the front and rear gusset molding material The manufacturing method includes a step of joining the end portion of the bridge forming member 4 superposed and folded to the front and rear gusset forming material 2 .

The third means is that, in the bridge forming step 100, the bridge forming member 4 is formed by folding a belt-like film in half along the longitudinal direction, and an air through hole 15A is formed in the side surface of the bridge forming member 4. It is a manufacturing method.

  As described in claim 1, the cushioning material of the present invention is provided with a bridge 15 between the pair of contact surface portions 11, and the bulge between the contact surface portions 11 is regulated by the bridge 15. The air layer of the bag body 10 configured to swell while maintaining a flat state is not required to have a conventional lens shape, and the contact surface portion 11 can press the article on average. In addition, the strength of the bag body 10 is extremely increased by the bridge 15 and it is possible to provide an extremely strong cushioning material. In addition, since it is in the form of a lightweight block, it can be used for transporting items such as dunnage bags, cushioning materials used when items are stored in boxes, or simple mats and stadium cushions for emergencies. It can be used in a very wide range such as a cushioning material.

Further , the bridge 15 is provided by superposing two sheets of film material or sheet material, whereby the pair of contact surface portions 11 can be firmly connected to each other. As a result, the durability against the external pressure of the bag body 10 is increased, and a strong cushioning material can be provided even with the bag body 10 made of synthetic resin. Further, since the bridge 15 is provided at one or a plurality of locations between the contact surface portions 11, the strength of the bag body 10 can be arbitrarily increased by arbitrarily changing the number of the bridges 15. it can. Furthermore, the bag body 10 as a whole can be uniformly strengthened by being provided parallel to the left and right side surface portions 12 of the bag body 10.

Further , the bridge 15 is formed of a synthetic resin film whose periphery is bonded to the contact surface portion 11 and the side surface portion 12, and the bridge 15 has an air through hole 15A. The strong bag 10 can be configured by integrating the bag 10 made of plastic and the bridge 15 made of synthetic resin. As a result, the present inventors have succeeded in providing a very strong and lightweight block-shaped cushioning material.

According to the manufacturing method of claim 2 , the block-shaped bag body 10 is configured by the pair of contact surface portions 11 that come into contact with the buffered object and the side surface portions 12 that are connected to the front, rear, left, and right side surfaces of the contact surface portion 11. In addition, the gussets 13 are formed on all the side surface parts 12, and the block-type air-filled cushioning material in which the bridge 15 is formed inside the bag body 10 can be continuously formed. Moreover, the bag body 10 can be continuously formed using the bridge forming member 4 formed by folding the belt-shaped film in half along the longitudinal direction .

According to the manufacturing process of claim 3 , the bridge 15 using the synthetic resin film can be continuously formed.

It is a perspective view which shows the reference example of this invention shock absorbing material. It is a perspective view which shows one Example of this invention blowing member. It is a perspective view which shows the other Example of this invention shock absorbing material. It is a top view which shows the other Example of this invention shock absorbing material. It is a top view of the shock absorbing material shown in FIG. It is a schematic perspective view which shows the manufacturing apparatus of this invention. It is a schematic plan view which shows the manufacturing apparatus of this invention. It is a schematic perspective view which shows one Example of the back-and-front gusset formation process of this invention. It is a block diagram which shows the manufacturing process of this invention.

  As described above, according to the present invention, the initial object such as light weight, excellent strength, versatility of use, and reduction in manufacturing cost can be achieved.

  The cushioning material of the present invention uses a block-shaped synthetic resin bag body 10 in which air is injected, and the bag body 10 includes a contact surface portion 11 and a side surface portion 12 (see FIG. 3).

  The contact surface portion 11 is a pair of opposing members that are widely formed on the surface that contacts the buffered object. On the other hand, the side surface portion 12 is a member that forms the bag body 10 by being connected to the front, rear, left, and right side surfaces of the contact surface portion 11. And the gusset part 13 is formed in all the side parts 12 of front and rear, right and left, respectively. The gusset 13 is provided with a gusset 13 having the same shape as the gusset formed on the bottom or side of the gusset bag, for example.

  In the illustrated example, for convenience of explanation, left and right gusset portions 13A are formed on the left and right side surface portions 12A of the bag body 10, and front and rear gusset portions 13B are formed on the front and rear side surface portions 12B of the bag body 10 (see FIGS. 1 and 3). ). As described above, when the gusset portion 13 is formed on the peripheral side surface portion 12 of the synthetic resin block-shaped bag body 10, the contact surface portions 11 located on the front and back surfaces of the bag body 10 maintain a planar shape and swell. (See FIG. 1).

  The synthetic resin material forming the contact surface portion 11 and the side surface portion 12 is, for example, a material in which a nylon film 0.015μ is subjected to dry lamination after gravure printing, and a LL polyethylene film 0.1μ is bonded to the back surface, or a commonly used material , ONY, OPP, PET, LDPE, CPP, aluminum vapor deposition, aluminum foil, and other synthetic resin films are used. In order to further increase the strength, for example, a synthetic resin wallif sheet, a synthetic resin net-like sheet, a synthetic resin cloth sheet, a paper sheet, and the like can be bonded together.

  The blowing member 14 uses a blowing member 14 having a substantially cylindrical shape made of a synthetic resin, which has been conventionally used for this type of cushioning material, and has an air blowing port having a check valve structure (see FIG. 2). And this blowing member 14 is mounted | worn with any one junction part of the surface film 1A and the back film 1B. Further, the blowing member 14 can be formed integrally with the side surface portion 12 in advance.

  A bridge 15 for connecting the contact surface portions 11 to each other is provided inside the bag body 10, and the bridge 15 is configured to restrict the swelling between the contact surface portions 11 (see FIG. 1). The illustrated bridge 15 is formed by superposing two film materials or sheet materials, but may be formed by one. The bridge 15 is provided parallel to the left and right side surface portions 12 of the bag body 10 at one or a plurality of locations between the contact surface portions 11.

FIG. 1 shows a reference example in which two bridges 15 of film material are formed. In the example of illustration, the edge part of the bridge | bridging 15 is not adhere | attached on the front-and-back side surface part 12B. By bonding the peripheral edge portion of the bridge 15 to the contact surface portion 11 and the side surface portion 12, the strength can be increased (see FIG. 3). In this case, the air is moved by opening the air through hole 15A in the bridge 15.

  FIG. 3 shows a state in which two bridges 15 made of synthetic resin are bonded to the contact surface portion 11 and the front and rear side surface portions 12B, and all the periphery of the two bridges 15 are bonded. In this case, an air through hole 15 </ b> A is opened in the bridge 15 so that air can be sealed in the bag body 10 partitioned by the bridge 15 with one blowing member 14.

  FIG. 4 shows an example in which two bridges 15 parallel to the left and right side surface portions 12 of the bag body 10 are provided between the contact surface portions 11. In this case, the strength of the bag body 10 can be increased uniformly by equalizing the spaces partitioned by the bridge 15.

  FIG. 5 shows a state before air is sealed in the bag 10 shown in FIG. That is, each bridge 15 is a state in which two films are polymerized and the air through hole 15A passes through each film. When air is sealed from this state, the bag 10 shown in FIG. 4 is formed.

  Next, the manufacturing method of this invention is demonstrated. The manufacturing process of the present invention includes a bridge forming process 100, a horizontal gusset forming process 200, a front / rear gusset forming process 300, a blowing member forming process 400, a vertical sealing process 500, a horizontal sealing process 600, and a cutting process 700 (FIG. 9).

  The bridge forming step 100 is a step of disposing the bridge forming member 4 between the front film 1A and the back film 1B. That is, one strip-shaped film 1 is cut to provide a strip-shaped surface film 1A that forms the contact surface portion 11A on the surface of the bag body 10 and a strip-shaped back film 1B that forms the contact surface portion 11B on the back surface of the bag body 10 ( (See FIG. 6). Next, the bridge forming member 4 for forming the bridge 15 is provided between the front film 1A and the back film 1B, and the bridge forming member 4 is installed between the front film 1A and the back film 1B (FIG. 7). reference).

  In the bridge forming step 100, when the bridge forming member 4 is made of a synthetic resin, the bridge forming member 4 is formed by folding the belt-like film in half along the longitudinal direction. And it has the process of drilling 15 A of air through-holes in the side surface of this bridge formation member 4 with the opening tool 50. FIG.

  The horizontal gusset formation step 200 is a step of forming the gusset portion 13 on the side surface portions 12 provided on the left and right sides of the contact surface portion 11. This horizontal gusset molding material 3 is a member in which a belt-like film is folded into a flat tube shape, and forms left and right gusset portions 13A on the left and right side surface portions 12A of the bag body 10. And this horizontal gusset molding material 3 is installed in the both sides of the bridge formation member 4, and a pair of horizontal gusset molding material 3 is arrange | positioned between the strip | belt-shaped surface film 1A and the strip | belt-shaped back film 1B. In the illustrated example, the apparatus for forming the horizontal gusset forming material 3 and the apparatus for forming the bridge forming member 4 are provided separately, but it is also possible to combine them. In other words, a device that forms the bridge forming member 4 is a device that folds the belt-like film into a flat tube shape, and that has the air through hole 15A provided by the opening device 50 is used as the bridge forming member 4 and does not use the opening device 50. The horizontal gusset forming material 3 is arranged.

  The front / rear gusset formation step 300 is a step of forming the gusset portion 13 on the front / rear side portions 12B provided before and after the contact surface portion 11 (see FIG. 7). In this step, a front and rear gusset forming material 2 in which a belt-like film is folded in half along the longitudinal direction is provided in advance. And the back-and-front gusset molding material 2 is arrange | positioned before and after between 1 A of surface films, and the back film 1B. In the front / rear gusset forming step 300, the end of the bridge forming member 4 is overlapped with the front / rear gusset forming material 2 and folded inside by the folding tool 20. That is, the end of the bridge forming member 4 has a cylindrical shape as shown in FIG. Therefore, the front and rear gusset forming material 2 is overlapped on the end portion of the bridge forming member 4 and folded by the folding tool 20. The illustrated front and rear gusset molding material 2 uses a strip-like film that is separate from the surface film 1A and the back-surface film 1B, but cuts one strip-like film 1 to form the strip-like surface film 1A and the strip-like film. When providing the back film 1B, it is also possible to separate the front and back gusset molding material 2 from the front film 1A and the back film 1B (not shown).

  The blowing member forming step 400 is a step of providing the blowing member 14 on the side surface portion 12 of the fixed base 10 (see FIG. 7). In this step, a synthetic resin blowing member 14 having a check valve structure 14B and an air blowing port 14A is provided in advance (see FIG. 2). And it is the process of arrange | positioning the blowing member 14 in any one junction part of the surface film 1A and the back surface film 1B. In the example of illustration, the blowing member 14 is arrange | positioned in the junction part between 1 A of surface films, and the front-and-back gusset molding material 2. FIG.

  The vertical sealing process 500 is a process of thermocompression bonding the horizontal gusset molding material 3 and the bridge forming member 4 to the front film 1A and the back film 1B (see FIG. 7). In this process, the vertical sealing tool 30 is used to seal the horizontal gusset forming material 3 arranged on the left and right, and the bridge forming member 4 is sealed along the longitudinal direction.

  The horizontal sealing step 600 is a step of thermocompression bonding the front and rear gusset molding material 2 to the front film 1A and the back film 1B (see FIG. 7). In this step, the front and rear gusset moldings 2 arranged at the front and rear are sealed using the horizontal sealing tool 40. At this time, the blowing member 14 disposed on the front and rear gusset molding material 2 and the surface film 1A is also sealed at the same time.

  The cutting step 700 is a step of forming the bag body 10 by cutting the lateral seal portion of the front and rear gusset molding material 2 and the vertical seal portion of the lateral gusset molding material 3 (see FIG. 7). In this step, the horizontal seal portion of the front and rear gusset molding material 2 is cut first, and then the vertical seal portion of the horizontal gusset molding material 3 is cut. When this cutting process 700 is completed, the bag body 10 is formed.

  Use of the present invention can be used when carrying goods such as dunnage back, as well as means for spreading and using like mats, spacers for securing a predetermined space in construction work, etc. It is. Furthermore, the outer bag 10, shape and size, or the position of the blowing member 14 can be freely changed.

DESCRIPTION OF SYMBOLS 1 Band-shaped film 1A Surface film 1B Back surface film 2 Front and rear gusset molding material 3 Horizontal gusset molding material 4 Bridge forming member 10 Bag body 11 Contact surface part 12 Side surface part 12A Left and right side part 12B Front and rear side part 13 Machi part 13A Left and right gusset part 13B Front and rear gusset Part 14 Blowing member 14A Air blowing port 14B Check valve structure 15 Bridge 15A Air through hole 20 Folding tool 30 Vertical sealing tool 40 Horizontal sealing tool 50 Opening tool 100 Bridge forming process 200 Horizontal gusset forming process 300 Front and rear gusset forming process 400 Blow Member forming process 500 Joining process

Claims (3)

A bag made of synthetic resin that is used by injecting air, a pair of contact surface portions that are formed on the surface that contacts the object to be buffered and that form a rectangular shape, and the peripheral surface of the contact surface portion. The side surface portion constitutes a block-shaped bag body, and each contact surface portion is configured to swell while maintaining a flat state by forming a gusset portion on each of the left and right side surface portions and the front and rear side surface portions . It is a cushioning material provided with a bridge that connects the contact surface parts inside ,
The bridge is provided by superposing two sheets of film material or sheet material made of synthetic resin, and the bridge is provided at one or a plurality of locations between the contact surface portions with the bridge parallel to the left and right side surfaces of the bag body. The bridge between the contact surface part and the front and back side parts is regulated by a bridge with an air through hole so that air can be sealed inside the bag body partitioned by the bridge. A block-type air-filled cushioning material, characterized in that it is configured as described above. A method of manufacturing a cushioning material that is used by injecting air into a synthetic resin bag body, the belt-shaped surface film forming the contact surface portion of the bag body surface and the belt-shaped back surface film forming the contact surface portion of the bag back surface A bridge forming step of providing a bridge forming member for forming a bridge between the surface film and the back film, and arranging a bridge forming member between the surface film and the back film;
Fold the belt-like film into a flat tube shape, and provide a horizontal gusset molding material that forms left and right gussets on the left and right side surfaces of the bag body with a bridge forming member in between, and a horizontal gusset between the front film and the back film A horizontal gusset forming step of arranging a pair of molding materials;
The belt-like film is folded in half along the longitudinal direction to provide front and rear gusset molding materials, the front and rear gusset molding materials are arranged between the front and back films, and the front and rear gusset portions are provided on the front and rear side portions of the bag body. Before and after forming gusset forming process,
A blowing member forming step of providing a blowing member made of a synthetic resin provided with a check valve structure and an air blowing port, and arranging the blowing member at one of the joining portions of the front film or the back film,
A vertical sealing step in which a horizontal gusset molding material and a bridge forming member are thermocompression bonded to the surface film and the back film;
A lateral sealing step of thermocompression bonding the front and rear gusset moldings to the front film and the back film;
A cutting step of forming a bag body by cutting the horizontal seal part of the front and rear gusset molding material and the vertical seal part of the horizontal gusset molding material,
In the front / rear gusset forming process, the end of the bridge forming member formed by folding the belt-shaped film in half along the longitudinal direction is overlapped and folded into the front / rear gusset molding material, and in the vertical sealing process, it is polymerized into the front / rear gusset forming material. A method for producing a block-type air-filled cushioning material, comprising the step of joining the end portion of the bridge forming member folded in front and the front and rear gusset molding materials .   3. The block mold according to claim 2, wherein, in the bridge forming step, the bridge forming member has a step of folding a band-shaped film in half along the longitudinal direction and forming an air through hole on a side surface of the bridge forming member. A method for producing an air-filled cushioning material.

Images