JP5457572B2 - Elastic material with air chamber - Google Patents

Description

  The present invention, for example, protects the object to be transported when transporting or moving various articles and prevents material damage due to contact with surrounding objects, or when a person moves or encounters danger. In particular, the present invention relates to an elastic material provided with an air chamber suitable for protecting a human body particularly in the event of a drought accident.

  Conventionally, to protect the object to be transported from the outside and other impacts, and to protect the object to be transported, a cushioning member is enclosed and quilted, and the cloth is made of an elastic material that is urged to shrink. A cylindrical packing protector has been proposed (see Patent Document 1). Moreover, it replaces with the synthetic resin cotton material utilized as a buffer member in this patent document 1, and the composite of several sheets, such as overlapping another film material so that the hollow formed in the film material which formed the hollow may be obstruct | occluded. There has also been proposed an air bubble sheet in which an air chamber is formed of a resin film material and a knitted fabric is integrally melted with the film at the time of superposition (see Patent Document 2).

Japanese Patent Laid-Open No. 10-175668 JP 2002-316371 A

  In the protective device according to Patent Document 1, the synthetic resin cotton material, the cloth material that becomes the skin, etc. are not necessarily light in weight, so that the handling is troublesome, and it is bulky when not in use, so it is inconvenient to store. In addition, even if the air bubble sheet according to Patent Document 2 is formed by integrally melting a knitted fabric with a film, its stretchability is not sufficient, and it does not expand greatly when it is attached to an object to be packed by expansion and contraction. Since it does not closely contact the outer surface, it may not be possible to effectively prevent the item to be packed from external impacts.

  On the other hand, in order to protect the human body from external impacts and the like, a life jacket is prepared in advance to cope with, for example, a drought accident, and the life jacket itself is to be worn in the event of an accident. The vest has a vest type, a vest type, etc. mainly using a material rich in buoyancy, and can be easily attached and detached. However, since the life jacket itself is formed to a considerable thickness, it is bulky and inconvenient to handle, for example.

  Therefore, the present invention was created in view of the above-described various circumstances, and its purpose is to provide buffering, protection, buoyancy function, etc. by joining by thin film materials such as synthetic resin films and sheets. It is equipped with an air chamber that acts as a cushioning structure, and can be used for various purposes such as packaging protection when moving various items, protecting the human body from external impacts, etc. In addition, an object of the present invention is to provide an elastic material provided with an air chamber that can be compactly packed when not in use.

In order to solve the above-described problems, reference numerals in embodiments for carrying out the invention to be described later will be added and described. In the present invention, between a plurality of synthetic resin thin film materials to be joined in an overlapping manner. The elastic material body 1 is formed by arranging and forming a large number of independent or continuous air chambers 2, and the elastic material body 1 is elastically urged by an elastic material 3 in a shrinking tendency. The elastic material 3 is integrated with the elastic material body 1.
The elastic material 3 can be integrated with the elastic material body 1 by being sewn into a synthetic resin thin film material or bonded at predetermined intervals.
Further, the elastic material 3 is inserted and arranged in a stretched state in the gap between the air chambers 2 and is covered with a cover material 2A made of a thin film material joined to the upper surface of the air chamber 2. it can.
The elastic material 3 can be configured by being inserted into a pipe-like insertion tube material 3B bonded to the elastic material body 1 at predetermined intervals in an expanded state.
The elastic material body 1 can be configured by covering the surface with a nonwoven material 4.
Moreover, the elastic material main body 1 can be formed in the sheet form which covers the to-be-packaged goods P, a cylinder shape, a bag shape, and a strip | belt shape.
The elastic material main body 1 can be formed as a life preserver or clothing having a predetermined shape for protecting the human body.
The air chamber 2 of the elastic material body 1 may be provided with a self-sealing means 7 having a check valve function that allows gas to be injected into the air chamber 2 and prevents exhaust.
The air chambers 2 are arranged in a large number, and are arranged for each air chamber group 5 that is a group of a predetermined number, and each air chamber 2 of each air chamber group 5 is arranged for each air chamber group 5. It is constructed by being inflated by self-sealing means 7 provided in each air chamber 2 forming the air chamber group 5 while being expanded by air injection from the air inlet 6 provided. Can do.

In the elastic material provided with the air chamber according to the present invention configured as described above, the elastic material 3 integrated with the elastic material main body 1 urges the elastic material main body 1 itself in a decreasing tendency, After the package P, the human body, etc. are stretched and attached when they are covered, they are brought into close contact with each other and protected from external impacts and the like.
The elastic material 3 is sewn or bonded to the elastic material body 1 with the synthetic resin thin film material forming the elastic material body 1, and the integration by the sewing or bonding is an elastic material in an expanded state. 3 is formed on the elastic material body 1 by simple sewing or bonding work to realize smooth expansion and contraction.
The elastic material 3 disposed in the space between the air chambers 2 and covered with the cover material 2A is protected from the outside by being concealed, and is handled by flattening the outer surface by the cover material 2A. Make it easier.
Alternatively, the elastic material 3 inserted into the insertion tube material 3B is disposed in the insertion tube material 3B in an expanded state, so that it does not have to be partially fixed in the insertion tube material 3B. The elastic material body 1 is elastically and efficiently expanded and contracted by being able to expand and contract.
The non-woven fabric material 4 coated on the surface of the elastic material body 1 improves the appearance of the appearance when configured as, for example, a packing tool, a life preserver, and clothing.
By forming the stretchable material body 1 in the form of a sheet, cylinder, bag, belt, etc., it is possible to cope with various mounting modes for the material P to be packed, the human body to be protected, etc. To improve.
The self-sealing means 7 provided in the air chamber 2 maintains a state in which the air chamber 2 is expanded by allowing gas to be injected into the air chamber 2, and a predetermined number of air chambers 2 arranged as a group. Even if an air leak occurs due to breakage of the other air chambers 2 in the air chamber group 5 consisting of the above, the air chamber 2 is maintained in an expanded state while maintaining a predetermined function such as an impact mitigating function, a buoyancy function, Keep the heat retention function.

  Since the present invention is configured as described above, the cushioning / protection / buoyancy of the stretchable material body 1 having a large number of air chambers 2 formed by superposition of thin film materials such as synthetic resin films and sheets. Versatility that can be used for various purposes, such as for protecting packaging when moving the goods to be packed P, which are various articles, and for protecting the human body from external impacts etc. It can be equipped with. In addition, when not in use, by being in a flat state in which a predetermined gas can be injected into the air chamber 2, it can be combined in a compact manner together with the elastic reduction biasing tendency by the elastic material 3, Convenient.

  That is, in the present invention, an elastic material in which an elastic material main body 1 made of a plurality of synthetic resin thin film materials arranged and formed with an air chamber 2 is integrated with the elastic material main body 1 is formed. This is because the elastic force is biased toward the shrinking tendency by 3, so that it is possible to ensure the adhesion when mounted on the article to be packed P or the human body.

  Integration of the elastic material 3 with the elastic material main body 1 by sewing into the synthetic resin thin film material can be simply configured by sewing work of the elastic material 3 in the extended state, and the sewing with the elastic material main body 1 by sewing. Since the integration is strong, the elastic material body 1 can be elastically and smoothly expanded and contracted, for example, at the time of use such as packing work.

  Since the elastic material 3 disposed in the space between the air chambers 2 is covered with the cover material 2A, the elastic material 3 is not exposed to the outside, so that it is sufficiently protected from the outside, and the surroundings, etc. The elastic material 3 is not hooked on the surface, and handling is easy in combination with the flattening of the outer surface.

  Since the elastic material 3 is inserted and extended in the insertion tube material 3B bonded on the elastic material main body 1, the elasticity of the elastic material 3 can be sufficiently secured in the insertion tube material 3A. Can be expanded and contracted smoothly.

  Further, if the stretchable material body 1 is covered with the nonwoven fabric material 4, the appearance and appearance of the article to be packaged P when it is attached to the human body as protective clothing, clothing, lifesaving equipment, etc. Tactile feel can be improved.

  Since the elastic material body 1 itself is formed in a sheet shape, a cylindrical shape, a bag shape, a belt shape, etc., it can be selected as various forms corresponding to the packaging mounting situation due to the difference in usage, the protection wearing situation for the human body, etc. These can be arbitrarily selected and configured.

  The elastic material body 1 can be provided with a self-sealing means 7 having a check valve function that allows gas to be injected into the air chamber 2 and prevents exhaustion. Even if the other air chambers 2 can be sufficiently expanded by the injected gas and an air leak occurs due to, for example, breakage or the like, the other air chambers 2 are not affected. A state can be maintained and a predetermined function can be exhibited.

  In each of the air chamber groups 5 configured as a group collected by the arrangement of a predetermined number of air chambers 2, each group can be expanded by air injection from the air inlet 6 provided for each air chamber group 5. Further, the self-sealing means 7 does not affect the air leakage that may occur in the other air chambers 2. Therefore, for example, it is useful for maintaining buoyancy when configured as a lifesaving device, and safety and stability can be further improved.

  In addition, the code | symbol attached | subjected in each means of the means for solving said subject and the effect of invention was attached | subjected in order to make easy reference with the part which shows each structure part described in drawing. The present invention is not limited to these descriptions, structures, shapes, and the like indicated by reference numerals and the like in the drawings.

It is a partially cutaway perspective view showing an embodiment for carrying out the present invention. It is sectional drawing which similarly shows the sewing structure of an elastic material, (A) is at the time of expansion | extension, (B) is at the time of reduction. It is sectional drawing at the time of the expansion | extension which shows the sewing structure from which an elastic material differs similarly. It is principal part sectional drawing which shows the form similarly inserted and arrange | positioned in the space | gap between the air chambers of an elastic material. Similarly, an example in which an elastic material is inserted into an insertion tube material and integrated with the elastic material body is shown, (A) is a cross-sectional view along the expansion / contraction direction, and (B) is along a direction orthogonal to the expansion / contraction direction. It is sectional drawing. It is a perspective view at the time of covering and using the expansion-contraction material similarly formed in the cylinder shape, for example to the to-be-packaged object which should be moved. It is a perspective view at the time of accommodating and carrying, for example, a wine bottle, similarly in a bag shape. It is a perspective view at the time of enveloping use for protection of the fruit at the time of cultivation or conveyance similarly. It is a front view at the time of forming similarly as clothing and a life preserver. It is principal part sectional drawing of the air chamber which similarly shows a self-sealing means. Similarly, it is the sectional view on the AA line in FIG.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment for carrying out the present invention will be described with reference to the drawings. Reference numeral 1 shown in the figure is a stack of a plurality of synthetic resin thin film materials such as a synthetic resin sheet / film material having a predetermined thickness. An elastic material body formed by joining non-joint portions of a predetermined size and shape between the synthetic resin thin film materials so that the non-joint portions become a number of appropriate predetermined air chambers 2. is there. The stretchable material body 1 is basically made of a thin film material such as a film / sheet material made of thermoplastic synthetic resin having a predetermined thickness and having flexibility such as polyethylene, soft polyvinyl chloride, polyvinylidene chloride, and polypropylene. A plurality of sheets are overlapped. For example, a concave portion is formed in one of the stacked thin film materials, and the concave portion is covered with the other thin film material, and the air chamber 2 is provided. It can be arranged on either one or both sides of the material body 1 or can be arranged so as to bulge on both sides. In addition, by joining a plurality of flat thin films made of synthetic resin, the air chamber 2 can be disposed at an intermediate position between the two so that the non-joined portion between them becomes the air chamber 2. The air chambers 2 may be independent of each other or may be continuously communicated with each other, and may be arbitrarily formed such as a circular shape, a triangular shape, a rectangular shape such as a square / rectangular shape, or other polygonal shapes. The size is not limited to the same size, and may be large or small, and the arrangement form is regular, for example, along a grid-like vertical and horizontal direction or a staggered diagonal direction, but an irregular form. However, either may be sufficient.

  The elastic material body 1 is not limited to being formed in a cylindrical shape as shown in FIGS. 1 and 6 or in a bag shape as shown in FIGS. 7 and 8. It may be formed into a sheet shape or a belt shape, and these are appropriately selected according to the intended use. In the case of being formed into a sheet shape or a belt shape, for example, it is intended to wrap various articles as the article to be packed P, is addressed to the protection part to protect the human body, etc., or is laid as a mat for a rug, etc. . When it is formed in a cylindrical shape, for example, it encloses the article to be packed P or encloses a part of the human body or the like. When it is formed in a bag shape, for example, bottles and fruits that are easily damaged by an impact from the outside are stored and covered, or various articles are covered with the surroundings from above, for example.

  Elastic material 3 is integrated with elastic material body 1 in which a large number of air chambers 2 are arranged and formed as described above, and the rubber is sewn into elastic material body 1 or bonded at predetermined intervals. The elastic material 3 such as a string is biased to a resilient reduction tendency. As shown in the figure, for example, if the expandable material body 1 is provided with a relatively small air chamber 2 having an outer diameter of about 5 to 10 mm and a depth of about 2 to 3 mm, it is related to the position of the air chamber 2. The elastic material 3 can be sewn and configured. In other words, a sufficiently stretched small-diameter rubber string material is set as an upper thread and lower thread on a sewing machine (sewing machine) and is sewn by the sewing operation (see FIG. 2 (A)). The elastic material body 1 can be reduced by releasing it (see FIG. 2B). Note that at least one of the upper thread and lower thread to be sewn may have an elastic force.

  The elastic material 3 is not limited to a small string shape, and as shown in FIG. 3, a sufficiently stretched flat rubber material is brought into contact with the surface of the elastic material body 1 and is integrally formed with the elastic material body 1 by a sewing thread 3A. It can also be configured by sewing in a shape.

  Further, when the air chamber 2 is relatively large, a portion other than the air chamber 2 portion (for convenience, referred to as a ground portion, hereinafter the same) in the elastic material body 1 is assumed to be flexible, and the elastic material 3 is reduced. For example, the elastic material body 1 itself is reduced by being bent into a wave shape by an elastic action. Therefore, the flexible portion, which is a ground portion that shrinks between the air chambers 2, has a width corresponding to the width to be reduced, and the air chambers 2 are separated from each other at a predetermined interval.

  The elastic material body 1 itself is urged in a decreasing tendency by an elastic material 3 integrally joined to the elastic material main body 1 by being sewn or bonded, and the elastic material 3 allows an extension action. Is to be stretched by. In this way, the elastic material 3 expands and contracts the ground portion which is a portion other than the air chamber 2 portion in the stretchable material main body 1. For example, the elastic material 3 extends to the stretchable portion itself or between the air chambers 2 or between the air chamber 2 and the ground portion. It is joined so that it can be passed over. Further, it is not preferable that the elastic material 3 itself is exposed to the outer side surface of the elastic material body 1 because it may cause, for example, catching with external members when used, and covers the elastic material 3, Another sheet material may be overlapped so as to be concealed.

  For example, the elastic material 3 may be sewn into a ground portion or the like in a stretched state with a small-diameter round rubber string material combined with a plurality of pieces, or may be bonded with an adhesive or the like at predetermined intervals. By joining the stretchable material body 1 in the stretched state as described above, the stretchable material body 1 is urged toward a shrinking tendency. Of course, since the ground portion only needs to be reduced or expanded, the joining portion of the elastic member 3 is not limited to the ground portion but may be the air chamber 2 portion. Further, when the elastic material body 1 itself has a cylindrical shape, a bag shape, or the like that is closed by being wound by the elastic material 3, for example, the elastic material body 1 is accommodated in a space in the ground portion between the air chambers 2. In addition to being connected in a loop shape, it is also possible to cover and close the gap with another sheet material.

  The elastic material 3 itself may be an elastic and elastic material, not limited to a rubber material, but a synthetic resin material such as thermoplastic polyurethane having a low hardness (hardness 68 [JISA]) such as Mobilon (Nisshinbo Chemical Co., Ltd. product) ).

  The joining of the elastic material 3 by stitching or bonding at predetermined intervals not only aims at integration with the stretchable material body 1, but the sewing / bonding work is, for example, an operation of being housed and arranged in a gap in the ground portion. Compared to the above, it can be carried out much more efficiently, and the elastic material body 1 itself can be expanded and contracted stably and reliably.

  The arrangement of the elastic material 3 with respect to the elastic material main body 1 is not limited as long as the elastic material 3 is arranged along the direction of expansion and contraction, and may be continuous or intermittently discontinuous. The material main body 1 may be distributed over the entire region or may be partially distributed.

  4 and 5 show another embodiment. That is, in FIG. 4, the elastic material 3 is disposed in a stretched state in the space between the air chambers 2, that is, in the ground portion, and covered with a cover material 2 </ b> A made of a thin film material joined to the upper surface of the air chamber 2. Is. The cover material 2 </ b> A has sufficient flexibility to bend by the elastic reduction force of the elastic material 3, and expands and contracts together with the elastic material body 1. In addition, the space | gap is continuing along the direction in which the expansion-contraction material main body 1 is expanded-contracted, and does not inhibit the linear expansion-contraction of the elastic material 3. FIG.

  In FIG. 5, the elastic material 3 is inserted into the pipe-shaped insertion tube material 3B bonded to the elastic material body 1 at predetermined intervals or over the entire region in an expanded state, and the insertion tube material 3B itself is made of synthetic resin. The thin tube material is set to a small and small tube diameter sufficient to allow the elastic material 3 to be inserted. The insertion tube material 3 </ b> B itself is contracted into a bellows shape by the elastic reduction force of the elastic material 3, and follows the expansion and contraction of the elastic material body 1. Since the elastic member 3 inserted into the insertion tube member 3B does not need to be fixed within the insertion tube member 3B, its elastic expansion / contraction action is not particularly limited. Since it does not travel on the outer surface of the elastic material main body 1 by being arranged in between, it is excellent in usability.

  In addition, the surface of the elastic material body 1 may be coated with the nonwoven material 4, and by appropriately selecting the nonwoven material 4, the elastic material body 1 itself can be made into a fabric-like appearance. Applications can be expanded. For example, the stretchable material body 1 that may be formed of a transparent resin sheet is covered with a non-woven fabric material 4 that displays appropriate colors, patterns, symbols, etc. It is also useful to make the contents of the package P visible from the outside. The stretchable material body 1 itself can be appropriately colored and the like, and any of them can be arbitrarily selected.

  In this way, the elastic material body 1 is formed into, for example, a sheet shape, a cylindrical shape, a bag shape, and a belt shape. By forming the elastic material body 1 into a cylindrical shape, various kinds of materials to be transported and moved as shown in FIG. The articles to be packed P as articles are covered to protect them. Moreover, by forming in a bag shape, as shown in FIG. 7, it is made into a long and slender bag shape so as to store the wine bottle W, and a protective bag is provided when carrying a levee. Furthermore, by forming the opening into a bag shape that can be elastically closed by the elastic material 3, as shown in FIG. 8, it can be a protective bag that protects the fruit F during cultivation from pests and the like, Moreover, it is possible to provide a protective packing for preventing damage when the product is packed and shipped by harvesting while being covered with the protective bag. Although not particularly illustrated, it is also possible to form a through hole in the ground portion for air circulation in order to allow air to flow inside and outside the elastic material body 1 itself.

  FIG. 9 shows a case where the stretchable material main body 1 is used as clothing, such as a vest, a vest, and a life-saving device prepared for a drought accident. The elastic material body 1 in which the elastic material 3 is enclosed is formed so as to exhibit, for example, a front body, a back body and other outer appearances, and the outer edges thereof are surrounded by a curve, straight line, etc. of a predetermined length. The air chambers 2 are in the form of closed cells that are independent of each other. When formed as such clothing, life-saving devices, etc., not only when the whole is integrally formed by a series of sheet materials, but also by dividing and forming each body and connecting them together It may be configured as. In the case of a lifesaving device, clothing, etc., for example, a hook-and-loop fastener (magic tape: registered trademark), a button, or other obturator for closing and fixing the opening when worn on the body is preferably arranged in the opening.

  When configured as such clothing, the air chambers 2 arranged in large numbers are grouped together in a predetermined number, and are arranged for each of the air chamber groups 5 as a group, and for each air chamber group 5. The air chamber 2 is expanded by air injection from an air inlet 6 provided for each air chamber group 5, and the self-sealing means 7 provided in each air chamber 2 forming the air chamber group 5. It is good to comprise by maintaining the expansion state by.

  In the figure, the air chamber groups 5 are arranged in multiple stages along the up-down direction of the clothing. For example, each of the air chamber groups 5 communicates with each other along the up-down direction. The air chamber 2 has a plurality of air chambers 2 that are not communicated with each other in the left-right direction. For example, the air inlet 6 is formed in the air chamber 2 arranged at the outermost edge at the lowest position. The air inlet 6 communicates in the air chamber 2 adjacent in the left-right direction, and air is supplied to each air chamber 2 communicated in the vertical direction. Further, self-sealing means 7 having a check valve structure closed by the supplied air pressure is continuously provided. The air chamber groups 5 are not limited to being arranged in multiple stages in the up-down direction, and may be arranged in a plurality in the left-right direction. Also, the air inlets 6 are not arranged in the up-down direction and left-right It may be along the direction or may be provided in plural in one air chamber group 5.

  For example, as shown in FIGS. 10 and 11, the self-sealing means 7 includes a belt-like film sheet that is overlapped and connected to each of the air chambers 2 adjacent to each other in the left-right direction. A plurality of air inflow passages 8 arranged in parallel with each other are partitioned by a partition wall 9, and an air conducting portion 10 is formed in a part of the partition wall 9 that partitions the air inflow passage 8 and communicates between the adjacent air inflow passages 8. Arranged. By doing so, the air forcibly injected from the air inlet 6 is supplied to the adjacent air chambers 2 through the air inflow path 6 and the air conducting portion 10 to expand each air chamber 2. The air pressure increased by being expanded in the air chamber 2 presses the overlapped sheet material in each of the air chambers 2 to obstruct the air inflow path 8 in a flat shape, thereby causing a backflow of air in the air chamber 2. It has a check valve action to prevent it. Further, although the air chambers 2 extending in the vertical direction communicate with each other so that they can be expanded, either one of the air chambers 2 adjacent in the horizontal direction is caused by a check valve action by the self-sealing means 7, and either However, even if air leaks due to breakage, for example, the other is not affected and the expanded state is maintained. Therefore, for example, when used as a life-saving device, even if an air leak due to the breakage of some of the air chambers 2 occurs, there is no influence on the adjacent air chambers 2 and other air chamber groups 5. For example, it maintains buoyancy in water and protects the human body by heat insulation and heat retention.

  In addition, when it is configured as apparel, it is not limited to vests and waistcoats as shown in the figure, but it is a work that integrally connects upper garments such as jumpers and coats, lower garments such as pants and trousers, and upper garments and lower garments. It may be a tie like clothing, and may be configured as underwear in some cases. In addition, through-hole formation to prevent the steam from flowing inside and outside, and to form each body tilt, each of the body parts is connected to each other in an independent divided form, etc. You can also Furthermore, the arrangement, size, and shape of the air chamber 2, selection of the horizontally long and vertically long shape, adjustment of the amount of gas charged into each air chamber 2, etc. are taken into consideration so as not to hinder body movements when worn. Keep it as

  Although not shown in the drawings, the stretchable material main body 1 itself having the air chamber 2 is disposed in a fish scale shape so that each of the stretchable material main bodies 1 overlaps, and the elastic material 1 is connected to each other by the elastic material 1. It can also be configured as an object. If it carries out like this, when it is set as clothing etc., for example, not only smooth body operation | movement but the stuffiness etc. which originate in the raw material of the impermeable elastic material main body 1 can be prevented.

  In any of the embodiments, the gas injected and sealed in the air chamber 2 is not limited to air, and various gases and gases, and liquids such as medicines and water, can be used according to the application. Injection may be performed, and the injection amount in each of the air chambers 2 is not limited to the case where the air chamber 2 is sufficiently expanded, and the injection may be performed with a margin.

P: Packing object W: Wine bottle F ... Fruit 1 ... Stretchable material body 2 ... Air chamber 2A ... Cover material 3 ... Elastic material 3A ... Sewing thread 3B ... Insertion tube material 4 ... Nonwoven fabric material 5 ... Air chamber group 6 ... Air injection Inlet 7 ... Self-sealing means 8 ... Air inflow path 9 ... Partition 10 ... Air conduction part

Claims (6)

  An elastic material body is formed by arranging and forming a large number of independent or continuous air chambers between a plurality of synthetic resin thin film materials that are overlapped and joined, and the elastic material body is an elastic material. The elastic material is elastically urged in a contraction tendency by the elastic material, and the elastic material is inserted into the pipe-shaped insertion tube material bonded at predetermined intervals on the elastic material body in an extended state. Elastic material with air chamber.   The elastic material provided with the air chamber according to claim 1, wherein the elastic material main body has a surface coated with a non-woven material.   The elastic material body provided with the air chamber according to claim 1, wherein the elastic material body is formed in a sheet shape, a cylindrical shape, a bag shape, or a belt shape that covers an object to be packed.   The elastic material provided with the air chamber according to any one of claims 1 to 3, wherein the elastic material body is formed as a life preserver or clothing having a predetermined shape for protecting a human body.   The air chamber according to any one of claims 1 to 4, wherein a self-sealing means having a check valve function that allows injection of gas into the air chamber and blocks exhaust is provided in the air chamber of the elastic material body. Elastic material provided.   The air chambers are arranged in a large number, arranged in groups of air chambers that are grouped in a predetermined number, and each air is injected by air injection from an air inlet provided for each air chamber group. The chamber is expanded, and each air chamber of the air chamber group is maintained in an expanded state by a self-sealing means provided in each air chamber forming the air chamber group. Elastic material with air chamber.

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