JP2007130059A - Air mattress and manufacturing method of the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air mattress improving weight pressure dispersion properties and permeability and making a structure simple and cleaning easy. <P>SOLUTION: A thermoplastic resin or a thermoplastic and elastomeric resin is a raw material or a main raw material for the air mattress. The air mattress includes a three-dimensional network structural body 1a of a spring structural body consisting of a plurality of hollow and continuous wires 1b that are ringedly and disorderly entangled and partly hot-glued by extrusion molding. Both ends 1e of the wire 1b in the end regions 1c and 1d of the body 1a are closed respectively. Thereby a hollow part 1f of the wire 1b is filled with the air with a pressure larger than the atmospheric one. Liquid (e.g., a gel or the like) can be a filler instead of the air in the hollow part 1f. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an air mattress that achieves optimal pressure dispersion regardless of a user's body shape and is difficult to sag.

  The air mattress disclosed in Patent Document 1 is formed in a substantially rectangular plate shape and is expanded to a predetermined height when supplied with compressed air, and is laminated in the middle in the longitudinal direction of the upper surface of the main air mat. An auxiliary air mat that expands to a predetermined height on the upper surface of the main air mat by being supplied with compressed air, and an exterior body that covers the main air mat and the auxiliary air mat. It is. The air-mattress of Patent Document 2 is an air-bed apparatus that includes three independent air-tight segments that are linearly secured to each other to form an air-mattress, wherein each segment of the air-mattress is mutually It is an invention that can be inflated independently, and a sleeper can adjust the level of support given to his / her head, waist and feet by changing the air pressure in each segment. Furthermore, the air-mattress of Patent Document 3 includes an air tube, a mattress main body that holds the air tube and is covered with an exterior, and an air supply pump that is provided in the mattress main body and supplies compressed air to the air bag. It is the invention which comprises.

Japanese Patent Laid-Open No. 10-327986 Japanese Patent Application Laid-Open No. 11-188793 JP 2000-189288 A

  However, in the conventional air mattress, the core itself is originally excellent in dispersion of body pressure, but since the air tube is thick and each core is formed in a columnar shape, the gap between the cores is wide and a step can be formed. . Therefore, since a cover is necessary on the upper surface, the body pressure dispersion of the air mattress deteriorates, the air permeability is lost, and the structure is complicated. Furthermore, since there is usually an air generating device for cleaning, a waterproof function is indispensable, and it is about wiping and cleaning. Therefore, it is difficult to clean the air mattress, and there is a problem that it cannot always be kept clean.

Therefore, in view of the above problems, it is an object to improve body pressure dispersibility and air permeability of an air mattress, simplify the structure, and facilitate cleaning.
In order to achieve this object, an invention according to claim 1 is an air mattress characterized in that air having a pressure exceeding atmospheric pressure is sealed in a hollow portion of a three-dimensional structure made of a thermoplastic resin.

  The three-dimensional structure of the invention of claim 2 is a three-dimensional network structure of a spring structure composed of hollow continuous filaments that are randomly entangled in a loop shape by extrusion and partially thermally bonded. It is preferable that the air is enclosed in the hollow portions of the continuous filaments by closing both end surfaces of the continuous filaments on both end surfaces of the original net-like structure.

  According to the invention of claim 3, it is preferable that the liquid is sealed in the hollow portion of the three-dimensional structure made of thermoplastic resin.

  According to the invention of claim 4, the liquid is preferably a gel.

  According to the invention of claim 5, the bulk specific gravity of the three-dimensional network structure is 0.007 to 0.01, the hollowness is 30 to 95%, and the pressure of the air sealed in the continuous filament is 111 to 11%. It is preferably set to 304 kPa.

  The invention according to claim 6 is a hollow continuous with both ends opened, wherein thermoplastic resin or thermoplastic elastic resin is used as a raw material or main raw material, and is randomly entangled in a loop shape by extrusion molding and partially thermally bonded or thermally welded. The step of closing the open end of the continuous filament at one end of the spring-structured three-dimensional network structure composed of filaments with heat, and the three-dimensional network structure with the end closed are large inside. Placing in a pressure vessel that can arbitrarily change the pressure set to a pressure larger than the atmospheric pressure, and capping the open end of the continuous filaments at the other end of the three-dimensional network structure with heat, with the pressure applied; A method for manufacturing an air mattress, comprising:

  According to the air mattress of the first to sixth aspects, the adjustment of the body pressure dispersion is excellent by the pressure of the enclosed air, and the air pressure can be changed. In addition, the hollow continuous filaments with increased pressure are molded in a three-dimensional entanglement manner, and each of them can be a spring, and the inside of the hollow continuous filaments is compressed air, It became an air spring, cushioning properties were improved, it was difficult to sag, and a significant improvement in data was observed even in repeated load resistance tests. In addition, the structure is simple, easy to clean, and easy to disinfect and wash. Since the three-dimensional network structure is a single structure, it can be easily recycled after use.

  Hereinafter, an air mattress 1 according to an embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 and 2, the air mattress 1 is made of a thermoplastic resin or a thermoplastic elastic resin as a raw material or a main raw material. Is a spring structure composed of a plurality of hollow continuous filaments 1b that are thermally bonded together, and both end portions 1e of the hollow continuous filaments 1b in the end surface regions 1c and 1d of the three-dimensional network structure 1a are respectively closed. By this, the air of the pressure exceeding atmospheric pressure is enclosed with the hollow part 1f of the hollow continuous filament 1b. A liquid (for example, a gel or the like) may be sealed in the hollow portion 1f instead of air.

  The bulk specific gravity of the three-dimensional network structure 1a is 0.007 to 0.01, the hollowness is 30 to 95%, and the pressure of air enclosed in the hollow continuous filament is 111 to 304 kPa (1.1 to 3 atm). ) Is set.

  Here, the raw material or main raw material which is a thermoplastic resin uses a flake shape or a chip shape such as a PET bottle. A PET bottle is crushed as it is and melted to form a flake. It can also be applied to thermoplastic resins other than recycled materials. For example, as thermoplastic resins, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, polyamides such as nylon 66, polyvinyl chloride, polystyrene, copolymers and elastomers based on the above resins, and blends of the above resins Etc. A polyethylene resin mixed with vinyl acetate resin and rubber is preferable. If the raw material is thermoplastic urethane, elasticity can be maintained with low resilience.

  According to the air mattress 1 of the present embodiment, the body pressure dispersion can be adjusted and the air pressure can be changed by the pressure of the air sealed in the hollow portion 1f. Each of the hollow continuous filaments 1b with increased pressure is molded in a three-dimensional entanglement manner, and each of the hollow continuous filaments 1b can be a spring, and pressure air is introduced into the hollow continuous filament 1b. Since it was sealed, the hollow continuous air became a spring, the cushioning property was improved, it was difficult to sag, and a significant improvement in data was recognized even in repeated load-bearing tests. In addition, the structure is simple, easy to clean, and easy to disinfect and wash. Since the three-dimensional network structure 1a is a single structure, recycling after use is easy.

  The manufacturing method of the air mattress 1 of this embodiment is demonstrated with reference to FIGS. The manufacturing method of the air mattress 1 of this embodiment uses thermoplastic resin or thermoplastic elastic resin as a raw material or a main raw material, and is entangled in a loop shape by extrusion and partially heat-bonded or thermally welded. A three-dimensional network structure base 2 having a spring structure composed of the open hollow continuous filaments 1b is held by the holding portions 3a and 3b, and the end face region 1c is pressed by the hot platen 4 to obtain a three-dimensional network structure base 2 Step 1 for melting and closing the open end of the hollow continuous filament 1b in one end face region 1c of the three-dimensional network structure body 2 with the open end on one end face being closed, and the inside from atmospheric pressure Is placed in a pressure vessel 5 that can be arbitrarily changed in pressure, and the three-dimensional network structure base 2 is held by the holding portions 6a and 6b while the pressure is applied, and the end face region 1d is held by the hot plate 7. Press and said Step 2 for melting and closing the open end of the hollow continuous filament 1b on the other end face of the two-dimensional network structure base 2 with heat to block and vent the air, and cooling for cooling and solidifying the three-dimensional network structure base 2 Solidification step 3. In addition, the three-dimensional network structure base 2 is obtained by spinning a large number of hollow hollow continuous filaments 1b from a downward nozzle, and randomly fusing each hollow continuous filament 1b with each other, This is produced by cooling and solidification, and the production methods thereof are disclosed in JP-B-50-39185, JP-A-55-17527, JP-A-58-149362, JP-A-1-207463, and JP-A-1. Since it is described in Japanese Patent No. 314771, the description is incorporated herein. Even in this state, the air mattress has a suitable body pressure dispersion, but the air mattress can have the same effect by closing the end of the hollow continuous filament.

  As a modified form of this embodiment, instead of a three-dimensional network structure, a three-dimensional structure in which air set to a pressure larger than atmospheric pressure is enclosed in a hollow portion of a hollow continuous filament by a hollow molding machine. Also good. It may be net-like or non-net-like (for example, a hollow rod shape). Fix the bed frame, fix the pipe core, and adjust the surface. As the hollow molding machine, refer to JP-A-6-55616, JP-A-9-94870, JP-A-2003-89149, JP-A-2004-160670, and the like.

  As a modified form of this embodiment, instead of a three-dimensional network structure, a three-dimensional structure in which air set to a pressure higher than atmospheric pressure is enclosed in a hollow portion of a hollow continuous filament by an inflation device. Good. It may be net-like or non-net-like (for example, a hollow rod shape). Fix the bed frame, fix the pipe core, and adjust the surface. As the inflation device, refer to JP 2000-94495 A, JP 2000-43119 A, and the like.

  The present invention is not limited to the above-described embodiment, and modifications and the like can be made without departing from the technical idea of the present invention. It will be included in the technical scope of the present invention. For example, the air mattress of the present invention can be used for a lifesaving device such as a ship. For example, a single life-saving device can be formed by bundling a plurality of, for example, about 20 hollow continuous filaments into one. For example, there is no problem even if the hollow continuous filament is broken at about 10 positions.

  According to the air mattress of the present invention, it is possible to provide a clean and easy-to-use air mattress because it can be washed and dried quickly.

1 is a perspective view of an air mattress 1. FIG. (A) is the longitudinal cross-sectional view of the axial direction of the continuous hollow filament 1b, (b) is the longitudinal cross-sectional view of the radial direction of the continuous hollow filament 1b. It is explanatory drawing which shows the manufacturing process 1 of an air mattress. It is explanatory drawing which shows the manufacturing process 2 of an air mattress. 1 is a front view of an air mattress 1. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Air mattress 1a ... Three-dimensional network-like structure 1b ... Hollow continuous filament 1c, 1d ... End surface area 1e ... Both ends 1f ... Hollow part 2 ... Three-dimensional network Structure base 3a, 3b ... Holding unit 4 ... Hot plate 5 ... Pressure vessel 6a, 6b ... Holding unit 7 ... Hot plate

Claims (6)

  An air mattress characterized in that air having a pressure exceeding atmospheric pressure is sealed in a hollow portion of a three-dimensional structure made of a thermoplastic resin.   The three-dimensional structure is a three-dimensional network structure of a spring structure composed of hollow continuous filaments that are randomly entangled in a loop shape by extrusion and partially heat-bonded, and both ends of the three-dimensional network structure 2. The air mattress according to claim 1, wherein the air is sealed in a hollow portion of the continuous filament by closing both ends of the continuous filament on the surface.   An air mattress in which a liquid is sealed in a hollow portion of a three-dimensional structure made of a thermoplastic resin.   The air mattress according to claim 3, wherein the liquid is a gel.   The bulk specific gravity of the three-dimensional network structure is set to 0.007 to 0.01, the hollowness is set to 30 to 95%, and the pressure of air enclosed in the continuous filament is set to 111 to 304 kPa. Air mattress. A spring composed of a hollow continuous filament with both ends open, using thermoplastic resin or thermoplastic elastic resin as a raw material or main raw material, and entangled randomly in a loop shape by extrusion molding and partially thermally bonded or thermally welded. Capping the open ends of the continuous filaments on one end face of the three-dimensional network structure of the structure with heat;
The three-dimensional network structure having the closed end is placed in a pressure vessel whose inside is set to a pressure larger than atmospheric pressure, and the pressure can be changed arbitrarily. Capping the open end of the continuous filament on the end face with heat;
Cooling and solidifying step for cooling and solidifying the three-dimensional network structure;
An air mattress manufacturing method comprising:

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