WO2002026590A1

WO2002026590A1 - Cushioning packaging method, cushioning package body, and cushioning package bag

Info

Publication number: WO2002026590A1
Application number: PCT/JP2000/006565
Authority: WO
Inventors: Shuichi Goto
Original assignee: Idemitsu Petrochemical Co., Ltd.
Priority date: 1999-07-28
Filing date: 2000-09-25
Publication date: 2002-04-04
Also published as: CN1399608A; EP1323642A1

Abstract

A cushioning packaging method requiring fewer packaging materials and providing an excellent packaging efficiency and work environment in a packaging (packing) requiring prevention of damage to tableware and precision instruments, comprising the steps of covering a packaged object with a thermoplastic resin sheet having a plurality of projected air chambers independent of each other, and deaerating the packaged object in the state of being sealed to fit the sheet closely to the packaged object, wherein, as required, the packaged object is disposed on a substrate, and a cushioning package bag can also be used which comprises an opening part with an engaging part, in which an adhesive part is provided at the end part thereof, and deaeration means.

Description

Description Buffer packaging method, buffer package and buffer packaging bag

The present invention relates to a buffer packaging method for packaging an article, a buffer package, and a buffer package used for the packaging. Background art

When transporting tableware such as glass, pottery, and porcelain, electrical equipment, electrical equipment parts, precision machinery, and precision machinery parts, various methods are employed to prevent damage during transportation. For example, when moving tableware, wrap it individually in packing material such as crepe paper, honey paper, foamed resin sheet, etc., so that it does not break, and then pack it in a cardboard box or put it in a cardboard box. Means such as insertion into a set cloth bag are employed. When the tableware, precision equipment, precision parts, etc. are to be shipped from the production plant, they are similarly individually packaged, put in individual paper boxes, and put again in cardboard boxes. The method is generally adopted. In other words, the packaging is basically individual packaging, and the packing and unpacking operations take time, resulting in poor packaging efficiency. In addition, there is a problem of increased total packaging costs, such as waste of resources and labor costs, in combination with securing various packaging materials and disposable packaging materials. As a method for solving this problem, Japanese Patent Application Laid-Open No. H10-3338274 discloses a bag-shaped transparent container that can be sealed and is deformable by a change in pressure. An interposed substrate, a depressurizing means for depressurizing the inside of the container in the container, and a packing device for the conveyed object; and A method for packing a conveyed object, characterized in that the object is fixed in close contact with almost the entire surface, is disclosed. This method is an excellent method that can fix a plurality of goods at once by using packing equipment and greatly reduces the packing work. In addition, there are few auxiliary materials for packing, and there is no waste during work. However, in this way, packaged items such as tableware can be temporarily packaged with multiple items, but they must be placed in cardboard boxes to prevent damage to the tableware during transportation. In this case, it is necessary to use a cushioning material such as a plastic foam or a plastic ball. These cushioning materials have very low apparent density, and storing and transporting them is very inefficient because of their bulkiness and is generally disposable and discarded. Therefore, a better packaging method is desired from the viewpoint of resource saving and environmental problems.

INDUSTRIAL APPLICABILITY The present invention relates to a packaging method that requires a small number of packaging materials in packaging (packaging) that requires prevention of breakage of tableware, precision equipment, and the like, and has excellent packaging efficiency and a working environment, and a packaging bag that is efficiently used in this packaging method. The purpose is to provide. Disclosure of the invention

Under such circumstances, the present invention uses a thermoplastic resin sheet having a large number of convex air chambers as a packaging material in packaging that requires breakage prevention, covers the article to be packaged, and then adheres by degassing. When fixing, it was found that the fixation of the article to be packaged was more stable, and at the same time, the buffering property was satisfied, and the present invention was completed.

That is, the present invention

(1) A buffer packaging method in which an article to be packaged is covered with a thermoplastic resin sheet having a number of independent convex air chambers, and the sheet is closely attached to the article to be packaged by degassing the article in a sealed state.

(2) A bag made of a thermoplastic resin sheet having a large number of independent convex air chambers, a zipper at the open end of the bag, an adhesive portion inside the zipper, and a buffer package provided with deaeration means. Store the article to be packaged in the bag, and remove the A buffer packaging method in which the sheet is brought into close contact by taking care of it.

(3) The buffer packaging method according to the above (1) or (2), wherein the convex air chamber side of the thermoplastic resin sheet is brought into close contact with the article to be packaged.

(4) The buffer packaging method according to any one of the above (1) to (3), wherein the article to be packaged is arranged on a substrate.

(5) A buffer package in which the inner surface of a thermoplastic resin sheet having a large number of independent convex air chambers is brought into close contact with the article to be packaged under reduced pressure.

(6) The cushioning package according to the above (5), wherein the convex air chamber side of the thermoplastic resin sheet is in close contact with the article to be packaged.

(7) The cushioning package according to the above (5) or (6), wherein the article to be packaged is arranged on a substrate.

(8) a bag made of a thermoplastic resin sheet having a large number of independent convex air chambers, having a jaw at an end of an opening of the bag and an adhesive portion inside the jaw,

-With buffer packaging bag.

(9) The present invention relates to the cushioning packaging bag according to the above (8), wherein the convex air chamber side of the thermoplastic resin sheet is the bag inner surface. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1A is a conceptual cross-sectional view illustrating an embodiment of the buffer packaging method of the present invention, and shows a state before degassing in which the outer periphery is heat-sealed while leaving a degassing portion. FIG. 1 (B) shows the state after vacuum degassing and the article to be packaged are adhered with a buffer sheet.

FIG. 1 (C) shows another embodiment in which an article to be packaged is placed on a substrate and packaged.

FIG. 2 is a conceptual diagram of a shock-absorbing packaging bag according to the present invention, which has a jaw at the end of the opening and an adhesive portion inside the jaw, and is provided with a deaeration means. (A) is a plan view and (B) is a cross-sectional view. 3A and 3B show enlarged cross-sectional views of the opening of the buffer packaging bag of FIG. 2 for both (A) and (B).

FIG. 4 shows a conceptual cross-sectional view of an intermittent automatic packaging device used in the buffer packaging method of the present invention.

FIG. 5 shows a conceptual plan view of FIG.

In FIG. 1, reference numeral 1 denotes a buffer package, reference numeral 2 denotes a thermoplastic resin sheet (buffer sheet) having a number of independent convex air chambers, reference numeral 3 denotes a convex air chamber, and reference numeral 4 denotes a general thermoplastic resin. Reference numeral 5 denotes a degassing means, reference numeral 6 denotes an article to be packaged, reference numeral 7 denotes a heat seal portion, reference numeral 8 denotes a buffer sheet close contact portion, and reference numeral 9 denotes a substrate. '

In FIGS. 2 and 3, reference numeral 11 denotes a buffer bag with a jaw, reference numeral 12 denotes an opening, reference numeral 13 denotes a buffer sheet, reference numeral 14 denotes a convex air chamber, and reference numeral 15 denotes a heat seal portion. Reference numeral 16 denotes an occlusal tool, reference numeral 17 denotes an adhesive portion, reference numeral 18 denotes an adhesive resin engaging tool, and reference numeral 19 denotes a depressurizing means.

4 and 5, reference numeral 22 denotes a buffer sheet, reference numeral 24 denotes a thermoplastic resin film, reference numeral 25 denotes a deaerator, reference numeral 26 denotes an article to be packaged, reference numeral 27 denotes a heat seal portion, reference numeral. Reference numeral 29 denotes a substrate, reference numeral 30 denotes a belt conveyor, reference numeral 31 denotes an outer peripheral heat sealer, reference numeral 32 denotes a heat sealer for a degassing section, and reference numeral 33 denotes a cutter. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described.

The thermoplastic resin sheet having a large number of independent convex air chambers (hereinafter sometimes referred to as a buffer sheet) used in the buffer packaging method of the present invention is usually a thermoplastic resin film, This is a thermoplastic resin sheet having a large number of independent convex air chambers.

Here, the thermoplastic resin sheet having a large number of independent convex air chambers The plastic resin film is added to the film having a large number of concave portions by, for example, heating vacuum forming or pressure forming by a drum having a large number of concave portions on the outer periphery. Then, it is manufactured by integrally laminating a base film (pack film) for sealing the concave portion.

Here, the shape of the convex portion is a columnar shape, a prismatic shape, an elliptic cylindrical shape, a hemispherical shape, or a combination thereof. The convex portion has, for example, a diameter of 2 to 2 O mm, preferably 3 to: LO mm, a height of 2 to 30 mm, and preferably 3 to 2 O mm. 1100 μ 、 η, preferably 10550 μπι, which are usually regularly distributed. In some cases, the buffer sheet may include a flat portion having no portion where the convex portions are distributed.

The thermoplastic resin film for forming the 囬 -shaped portion is not particularly limited. However, from the viewpoints of moldability of the concave portion, fusing property with the base film (pack film), flexibility, and buffering property. Polyolefin resins such as polyethylene resin and polypropylene resin are suitable, and in particular, high-pressure low-density polyethylene, linear low-density polyethylene, polyethylene polymerized with a methacrylate catalyst, polyethylene, ethylene and butene-1, Copolymers with α-olefins such as hexene-11 and otaten-11 are exemplified.

Examples of the polypropylene-based resin include soft polypropylene having low crystallinity, and random copolymers of propylene with other olefins. Elastomers such as ethylene monoacetate butyl copolymer or ethylene mono-α-olefin elastomer may be added to these polyolefin resins. The base film is not particularly limited as long as it can at least block the concave portion of the concave portion forming film. However, in general, the base film forms the main body of the buffer sheet, and various films are selected according to the buffer packaging field and application. Therefore, as the base film, a polyethylene film having a heat-sealing property with the concave portion forming film is used. There are a single layer of film, a coextruded multilayer film of the polyethylene resin and another resin, and a laminated film obtained by laminating other films. For example, nylon / polyethylene, polyester / polyethylene, vinylidene chloride coatNylon / polyethylene, vinylidene chloride coatPolyester / polyethylene, polypropylene / ethylen-vinyl alcohol

-Polymer copolymer Z polyethylene, polycarbonate / polyethylene, aluminum foil / polyethylene, paper / polyethylene, cloth, polyethylene, etc., which can be multilayered via an adhesive resin such as maleic anhydride-modified polyolefin resin if necessary .

The resin components of these films may contain other resins, elastomers, various stabilizers, coloring agents, fillers, and the like, if necessary. Further, in the present invention, since this base film preferably constitutes the outer side surface in the buffer package, it is possible to use various printed pieces in the same manner as a normal packaging bag. . Therefore, the selection of the base film is appropriately determined in consideration of the strength, heat resistance, gas barrier property, etc., depending on the use of the packaging, the size, the article to be packaged, and the like. However, in order to ensure reduced pressure and adhesion, it is preferable to use a gas-resistant film.

The buffer sheet is generally composed of a film having a concave portion and a base film, but if necessary, a sheet having a multilayer structure in which a film is further laminated on the convex side of the buffer sheet. It can also be. The buffer sheet having a large number of convex portions is preferably transparent so that the contents of the article to be packaged can be checked, so that the article to be packaged can be seen through.

In the buffer packaging method of the present invention, after packaging the article to be packaged, the internal air is degassed and the pressure is reduced. For this reason, when a packaging bag is used as a buffer packaging method, an opening for inserting and storing articles to be packaged is usually required. This opening needs to be closed after the article to be packaged is inserted. As a means of closing, the opening can be heat sealed after storage. Wear. In order to perform heat sealing, equipment is required. For this reason, the opening can be closed without providing these facilities by providing a jaw and an adhesive portion in the opening.

Here, the production of a thermoplastic resin sheet having a large number of independent convex air chambers with a jaw having an adhesive portion is preferably performed by molding the concave portions into a thermoplastic resin film. For sealing, the film is adhered to a base film to form a buffer sheet having a large number of independent convex air chambers. At the same time or before and after the attachment, a method of attaching an occlusal tool to a portion of the side surface of the convex portion (anti-substrate film surface) where there is no convex portion can be preferably employed. That is, by performing in-line molding of the air chamber and sticking of the occlusal tool, it is possible to solve the problem of bulky and difficult handling when performing each step separately and independently.

Next, the present invention will be described with reference to the drawings. FIG. 1 (A) is a conceptual cross-sectional view illustrating an embodiment of the shock-absorbing packaging method of the present invention, and shows a state before degassing in which the outer periphery is heat-sealed while leaving a degassing portion. FIG. 1 (B) shows a state after vacuum degassing and the article to be packaged are closely adhered with a buffer sheet. FIG. 1 (C) shows another embodiment in which an article to be packaged is placed on a substrate and packaged.

In FIG. 1, 1 is a buffer package, 2 is a thermoplastic resin sheet (buffer sheet) having a number of independent convex air chambers, 3 is a convex air chamber, 4 is a general thermoplastic resin film, 5 is a deaeration means, 6 is an article to be packaged, 7 is a heat seal part,

Reference numeral 8 denotes a buffer sheet adhered portion, and reference numeral 9 denotes a substrate. As shown in FIG. 1 (A), the cushioning packaging method of the present invention uses a thermoplastic resin sheet (buffer sheet) 2a and 2b having a large number of convex air chambers 3 with the convex air chambers 3 inside. This is an example in which The article to be packaged 6 is stored between the two buffer sheets. Then, a heat sealing portion 7 is formed by securing the deaeration means 5 and sealing the outer periphery at a time so that the hermetically sealed state is maintained. Then, from the deaeration means 5, vacuum Reduce the pressure and deaerate the air inside. Due to this deaeration, as shown in FIG. 1 (B), the buffer sheet has a large number of convex portions in close contact with the article to be packaged, and in part, a contact portion 8 between the buffer sheets is formed. Thereby, the article to be packaged is positioned and fixed.

FIG. 1C shows another embodiment. That is, a case where a thermoplastic resin film (buffer sheet) 2a having a large number of independent convex air chambers, a general thermoplastic resin film 4, and a substrate 9 are used in combination. That is, a substrate 9 is placed on a general thermoplastic resin film 4, and an article to be packaged is placed on the substrate 9 and packaged by the same method as described above. In this case, the substrate 9 may be a general flat plate, but is preferably a shock absorbing material such as a thermoplastic resin foam sheet. Further, as the substrate, in order to suppress the movement of the article to be packaged, a substrate having an uneven surface or, when the article to be packaged is specified, having a concave portion corresponding to the shape thereof is preferably used.

The buffer packaging method of the present invention is not particularly limited as long as it uses a buffer sheet having a large number of independent convex air chambers. That is, it is appropriately selected according to the packaging form of the article to be packaged. For example, in the case of moving goods or individual transportation, packaging bags that have been processed into bags in advance are used. There is no particular limitation on the cushioning packaging bag suitably used for these individual packages, and a packaging bag is used as a sealing means, in which the opening for storing the article to be packaged is heat-sealed and closed after the article is stored. Is also possible. However, in this case, heat sealing equipment and a heat sealing process are required, and it is difficult to use in a general packaging field. Therefore, there is a shock-absorbing bag with a jaw that does not require heat sealing.

FIG. 2 is a conceptual diagram of a shock-absorbing packaging bag according to the present invention, which has a jaw at the end of the opening and an adhesive portion inside the jaw, and is provided with a deaeration means. FIG. 3 shows an enlarged cross-sectional view of the opening of the buffer packaging bag of FIG. 2A is a plan view and FIG. 2B is a cross-sectional view. In Fig. 2 and Fig. 3, 1 1 is a buffer packaging bag with a jaw, 1 2 Is an opening, 13 is a buffer sheet, 14 is a convex air chamber, 15 is a heat seal part, 16 is an occlusal tool, 17 is an adhesive part, 18 is an adhesive resin engaging tool, and 19 is an adhesive resin engaging tool. Depressurizing means are shown respectively. In FIG. 2, the articulation tool 16 is provided along the opening end of the opening of the buffer packaging bag 11 with the articulation tool, and has a tape shape having a male member 16a and a female member 16b. It is fused to the film base of the buffer sheet. This is known per se, and the opening of the bag can be opened and closed again by the engagement and disengagement of the male and female members.

Next, the adhesive portion 17 may be a coating layer of an adhesive resin, but is preferably an adhesive resin engagement tool 18 as shown in FIG. It is important that the adhesive resin engagement tool 18 is provided inside the bag on the side opposite to the opening of the articulation tool 16. Here, when the adhesive resin engagement tool 18 is provided outside the articulation tool 16, the adhesive resin engagement tool partially adheres during the operation of the articulation tool, and in accordance with the articulation tool. However, there will be places where adhesion cannot be achieved eventually, making it difficult to ensure a stable seal. Further, in order to engage the adhesive resin engaging portion for sealing, it is necessary to apply an external force artificially and consciously over the entire range.

The cross-sectional shape of the adhesive resin engagement device is not particularly limited, and may be a flat shape, a semicircle shape, a trapezoidal shape, or the like, but is preferably a combination of concave shapes shown in FIG. 3 (A). Some may be preferred. With the adhesive resin engaging device, the buffer sheets 13a and 13b are joined and engaged over the entire opening of the bag, maintaining a stable adhesive state and hermetically sealing the opening of the bag and the inside. You can do it. However, the engagement is only required to maintain the adhesively sealed state, and the function is completely different from that of the conventional articulation tool. A shape like a nail is not preferred.

That is, although the adhesive layer is formed on the female member of the adhesive resin engaging device and the conventional articulator, the purpose is the same function, but the means is completely different. In other words, instead of the jaw (female member) coated with adhesive, It is not possible to use adhesive resin articulators. Because the adhesive resin is generally soft and has low rigidity, the male member cannot be inserted into the female member due to the pressure when the occlusal tool is engaged, but the occlusal strength cannot be secured even if it can be inserted. However, it cannot function as a bag with an articulation tool. There is no particular limitation on the method of manufacturing the bag with an articulation tool, but usually, the co-extrusion molding of the resin for the articulation tool and the resin for the engagement tool is used to simultaneously form the articulation tool and the adhesive resin engagement tool into a tape shape. It is preferable to form them integrally. In this case, in order to ensure the occlusal strength, the occlusal tool is selected from a resin having a certain level of rigidity and a resin having a heat-fusing property to the bag body film. The adhesive resin is appropriately selected depending on the size of the bag, the type of film of the bag body, the thickness, the rigidity, and the like.

In this case, if necessary, an adhesive resin such as an unsaturated carboxylic acid or a derivative-modified polyolefin resin may be added to the occlusal resin in order to improve the co-extrusion adhesiveness between the occlusal resin and the engaging tool resin. Can also be blended. Furthermore, the adhesive function of the engagement device is exerted on its surface, and the resin for the engagement device may be formed on an extended portion of the base film (the fusion portion to the film) of the occlusal device. It can be easily co-extruded. As the resin for the occlusal tool, low-density polyethylene, ethylene-α-olefin copolymer, ethylene-acrylic acid copolymer, polypropylene, taking into account the occlusal properties and the adhesion to the inner surface of the bag body film Examples include a system resin. Preferred examples of the resin for the engagement member include an ethylene unipolar butyl copolymer or a resin containing these. Here, examples of the ethylene monopolar copolymer include ethylene monoacetic acid copolymer, ethylene-methacrylic acid copolymer, and ethylene monoethyl acrylate copolymer.

Also, ethylene.a-olefin copolymer, propylene.butene-11-carbon having 5 to 10 carbon atoms, α-olefin copolymer, styrene 'ethylene' butylene-styrene block copolymer, styrene-butadiene-styrene copolymer And various resins containing an adhesive component such as styrene copolymer and styrene 'isoprene / styrene block copolymer. These adhesive resins are appropriately determined according to the characteristics, use, size, etc. of the bag by combining the content of the polar vinyl monomer, the mixing ratio with other resins, elastomers, and the like. When a bag with an occlusal tool is used as the buffer packaging bag of the present invention, after the article to be packaged is stored in the bag, the inside of the bag is inserted into a vacuum cleaner except for a part of the opening of the bag, and the inside is evacuated. However, it is also possible to adopt a method in which the remaining portion is occluded and adhered while maintaining the reduced pressure. However, after storing the article to be packaged, the opening is bitten by a biting tool, and the inside air is removed by a deaeration means 19 such as a check valve or open / close valve provided in the bag, and the inside of the bag is cleaned with a vacuum cleaner. It is preferable to use a method to pull out.

According to this method, before the internal air is evacuated, the adhesive resin engagement device can be brought into a non-coupled state. That is, it is possible to shift the engagement of the engagement tool and the engagement of the engagement tool. As a result, as the internal air is evacuated and the pressure is reduced, the buffer sheets 13a and 13b on the opposite side of the articulation tool are drawn naturally, and the adhesive resin Adheres naturally by means of degassing without external force. Therefore, the adhesion is uniform at the same time over the i | g direction, so that the adhesion is greatly improved, and good confidentiality can be secured. For this reason, it is preferable that the height of the engaging tool is provided so that the engaging tool or the film on the side opposite to the engaging tool does not come into contact with the engaging tool in a state of being engaged. The use of the buffer packaging bag of the present invention is provided with an occlusal tool, and unlike sealing by a heat seal, it can be used repeatedly, contributing to resource saving.

The buffer packaging method of the present invention has been described above for the case of individual packaging. However, the buffer packaging method of the present invention is not limited to the case of individual packaging such as moving or courier service, and the above-mentioned glass products, porcelain-porcelain products, machinery / mechanical parts, electric / electrical products from a production factory. For packaging of parts and other products and parts Applicable. In such cases, automatic and semi-automatic packaging methods are possible.

FIG. 4 is a conceptual sectional view of an intermittent automatic packaging device used in the buffer packaging method of the present invention, and FIG. 5 is a conceptual plan view of FIG. 4 and 5, reference numeral 22 denotes a buffer sheet, reference numeral 24 denotes a thermoplastic resin film, reference numeral 25 denotes a deaerator, reference numeral 26 denotes an article to be packaged, reference numeral 27 denotes a heat seal portion, reference numeral 29 denotes a substrate, and reference numeral 30 denotes a substrate. A belt conveyor, 31 is an outer heat sealer, 32 is a deaerator heat sealer, and 33 is a cutter.

A buffer packaging method using the packaging device will be described. First, the thermoplastic resin film 24 is supplied onto the belt conveyor while being pulled out from 24b. The substrate 29 on which the article to be packaged is placed is transported onto the thermoplastic resin film [transporting step (A)]. Next, the buffer sheet 22 is supplied while being pulled out from 22 a so as to cover the article to be packaged. The supplied buffer sheet is compressed at both left and right ends as necessary and pressed against the thermoplastic resin film 24. Next, the thermoplastic resin film 24 and the shock absorbing sheet 22 are heat-sealed in the outer peripheral heat sealer 31 except for the deaerator (pipe) [heat seal step (B)].

After the completion of the heat sealing, the degassing device 25 performs vacuum degassing, and the buffer sheet is brought into close contact with the article to be packaged (degassing / adhering step (C)). The deaeration pipe is pulled out halfway, and at the same time, the deaeration pipe is heat-sealed with the deaeration section heat sealer 32 and the middle part is cut off with the cutter 33 (sealing / cutting process (D)). . Packaging is completed by each of these steps. In this buffer packaging method, each process can be automatically packaged by operating the belt conveyor intermittently for each process.

If necessary, the outer heat sealer 31 may be provided with a notch 31a for simultaneously heat-sealing the central portion where there is no article to be packaged and the like at the same time. Also, depending on the article to be packaged, the substrate 29 is not used and the thermoplastic A buffer sheet may be used instead of the resin film 24. Further, depending on the material of the substrate, it goes without saying that both may be a buffer sheet.

Above, the packaging method, the buffer package, and the buffer bag have been described in detail for the buffer package of the present invention. In these buffer packages, a buffer sheet having a number of independent ώ-shaped air chambers is used. Whether the convex air chamber side of the buffer sheet is used on the side of the package or on the outside, the effect as a buffer package can be expected. However, the present invention has a feature that, in addition to the simple buffer packaging method, an additional effect is obtained when the buffer sheet is adhered and fixed to the article to be packaged by deaeration of internal air and decompression. Therefore, it is preferable that the convex air chamber be located inside the package from the viewpoint of the deformation and adhesion characteristics of the convex air chamber.

The buffer packaging method of the present invention is characterized by a number of independent convex air chamber-containing sheets, such as shock-absorbing and heat-insulating properties. It is possible, and at the same time, it does not require equipment for heat sealing, and can be buffered and packed anywhere. For example, it is tightly packaged in electronic and electrical machinery, packaging of the same parts, storage of glass, ceramic and porcelain tableware, transportation packaging, fine arts, various food packaging, transportation, etc. It is also possible to package multiple dishes at the same time, which is expected to reduce the volume and expand its application fields such as storage, transportation, and storage. Industrial applications

According to the buffer packaging method of the present invention, the buffer sheet can be tightly fixed to the article to be packaged by degassing by using a buffer sheet having a large number of independent convex air chambers and vacuum. Therefore, a plurality of articles to be packaged can be positioned, and individual articles do not come into contact with each other. In addition, articles to be packaged are covered with cushioning sheets. Because it is covered, the use of secondary shock absorbers is unnecessary or reduced. In addition, auxiliary materials are not required for packaging, and workability and deterioration of the packaging environment can be suppressed.

Claims

The scope of the claims

1-A buffer and packaging method in which an article to be packaged is covered with a thermoplastic resin sheet having a large number of independent convex air chambers, and the sheet is adhered to the article to be packaged by deaeration while the article to be packaged is sealed.

2. A bag made of a thermoplastic resin sheet having a large number of independent convex air chambers, a zipper at the open end and an adhesive portion inside the zipper, and a buffer packaging bag provided with deaeration means. A buffer packaging method in which the article to be packaged is stored in the container, and the package is degassed in a sealed state to bring the sheet into close contact.

3. The buffer packaging method according to claim 1, wherein the convex air chamber side of the thermoplastic resin sheet is brought into close contact with the article to be packaged.

4. The buffer packaging method according to any one of claims 1 to 3, wherein the article to be packaged is arranged on a substrate.

5. A buffer package in which the inner surface of a thermoplastic resin sheet having a large number of independent convex air chambers is brought into close contact with the article to be packaged under reduced pressure.

6. The buffer package according to claim 5, wherein the convex air chamber side of the thermoplastic resin sheet is in close contact with the article to be packaged.

7. The buffer package according to claim 5, wherein the article to be packaged is arranged on a substrate.

8. A bag made of a thermoplastic resin sheet having a large number of independent convex air chambers, a zipper at the opening end and an adhesive portion inside the zipper, and a buffer package provided with deaeration means. bag.

9. The bag according to claim 8, wherein the convex air chamber side of the thermoplastic resin sheet is the bag inner surface.