# US 2013/0153131 A1 · Method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit

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- Number: US 2013/0153131 A1
- Document ID: US20130153131A1
- Status: Published application
- Kind: A1
- Application number: 13/819,210
- Filed: 2010-08-26
- Published: 2013-06-20
- Earliest claimed: 2010-08-26
- Assignees: Shigematsu Works Co., Ltd.
- Inventors: Takashi Ozawa; Kazutaka Tanino; Seiko Nitta
- Web page: https://patentgrep.com/patent/US20130153131A1

## CPC

- A41H 43/04: Joining garment parts or blanks by gluing or welding (mending garments by adhesives or adhesive patches A41H27/00) {; Gluing presses}
- A41D 27/24: Hems; Seams
- A41D 27/245: {made by welding or gluing (joining of plastics by welding or gluing B29C65/00; sewing machines for concurrently making thread and welded seams D05B17/00; thermal or chemical fixing of seams and hems D06M)}
- A62B 17/006: {against contamination from chemicals, toxic or hostile environments; ABC suits}
- Y10T 156/1051: by folding
- A41H: APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
- A41D: OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
- A62B: DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING (valves specially adapted for medical use A61M39/00; life-saving devices, apparatus or methods specially adapted for use in water B63C9/00; divers' equipment B63C11/00; specially adopted for use with aircraft, e.g. parachutes, ejector seats, {B64D17/00, B64D25/10}; rescue devices peculiar to mining E21F11/00)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

[Object of the Invention] An object of the present invention is to provide a method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit, wherein fewer fabrication man-hours are required than in the conventional method. [Disclosure of the Invention] A method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit comprises the steps of (a) stacking one of a pair of multi-layer sheet fabric pieces for use in a chemical protective suit, each of which comprises a front surface layer of thermoplastic resin film, a rear surface layer of thermoplastic resin film, and at least one middle layer of chemical permeability resistant resin film, on the other of the pair of multi-layer sheet fabric pieces, with a part of a peripheral edge of one multi-layer sheet fabric piece opposed to a part of a peripheral edge of the other multi-layer sheet fabric piece, (b) seaming the stacked multi-layer sheet fabric pieces at a portion close to the peripheral edges opposed to each other along the peripheral edges opposed to each other so as to form a seam line, and (c) high frequency dielectric heating the stacked multi-layer sheet fabric pieces at a band portion of predetermined breadth close to the seam line along the seam line, wherein the peripheral edges opposed to each other and the band portion are disposed to face opposite sides of the seam line, so as to weld and integrate the stacked multi-layer sheet fabric pieces with each other at the band portion.

## Claims

### Claim 1

A method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit comprising the steps of (a) stacking one of a pair of multi-layer sheet fabric pieces for use in a chemical protective suit, each of which comprises a front surface layer of thermoplastic resin film, a rear surface layer of thermoplastic resin film, and at least one middle layer of chemical permeability resistant resin film, on the other of the pair of multi-layer sheet fabric pieces, with a part of a peripheral edge of one multi-layer sheet fabric piece opposed to a part of a peripheral edge of the other multi-layer sheet fabric piece, (b) seaming the stacked multi-layer sheet fabric pieces at a portion close to the peripheral edges opposed to each other along the peripheral edges opposed to each other so as to form a seam line, and (c) high frequency dielectric heating the stacked multi-layer sheet fabric pieces at a band portion of predetermined breadth close to the seam line along the seam line, wherein the peripheral edges opposed to each other and the band portion are disposed to face opposite sides of the seam line, thereby welding and integrating the stacked multi-layer sheet fabric pieces with each other at the band portion.

### Claim 2 (depends on 1)

A method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit of claim 1, further comprising, between the steps (b) and (c), the step of (d) folding one of the stacked multi-layer sheet fabric pieces toward the seam line at a portion away from the seam line beyond a band portion of predetermined breadth close to the seam line, wherein the peripheral edges opposed to each other and the band portion are disposed to face opposite sides of the seam line, and wherein the high frequency dielectric heating is carried out on triply stacked multi-layer sheet fabric pieces in the step (c).

### Claim 3 (depends on 1)

A method for integrating multi-layer sheet fabric pieces for use in s a chemical protective suit of claim 1, wherein the thermoplastic resin film forming the front surface layer and the rear surface layer is polyurethane resin film.

### Claim 4 (depends on 1)

A method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit of claim 1, wherein the thermoplastic resin film forming the front surface layer and the rear surface layer is polyvinyl chloride resin film.

### Claim 5 (depends on 1)

A method for integrating multi-layer sheet fabric pieces for use in a chemical protective suit of claim 1, wherein each of the multi-layer sheet fabric pieces further comprises a middle layer of lattice fabric.