Stretch fabric for medical use

• US 5,352,216 A
• Filed: 11/18/1992
• Issued: 10/04/1994
• Est. Priority Date: 10/26/1989
• Status: Expired due to Term

• Current Assignee: ALCARE Co., Ltd.
• Original Assignee: ALCARE Co., Ltd.
• Inventors: Shiono, Katuaki, Usukura, Koji
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): ZUTTARELLI, ANTHONY
• Application Number:
  US07/978,194
• Time in Patent Office: 685 Days
• Field of Search: 2/243 A, 428/137, 428/284, 428/287, 604/312, 604/358, 604/366-367, 604/369, 604/372, 604/378, 604/370, 604/380, 602/43-45, 602/47, 602/76, 602/77, 602/60, 602/75
• US Class Current: 604/312
• CPC Class Codes: A61F 13/01034 characterised by a property
• CPC Class Codes: A61F 2013/00119 elastic
• CPC Class Codes: A61F 2013/00144 transversal distribution
• CPC Class Codes: A61F 2013/00153 coloured or with decoration pattern or printing
• CPC Class Codes: A61F 2013/00187 insulating; warmth or cold applying
• CPC Class Codes: A61F 2013/00242 to avoiding fraying or pilling
• CPC Class Codes: A61F 2013/00246 in a special way pervious to air or vapours
• CPC Class Codes: A61F 2013/00744 containing non-woven
• CPC Class Codes: A61F 2013/00855 pervious to air or vapours
• CPC Class Codes: B32B 2250/03 3 layers
• CPC Class Codes: B32B 2250/20 All layers being fibrous or filamentary
• CPC Class Codes: B32B 2262/0246 Acrylic resin fibres
• CPC Class Codes: B32B 2262/0261 Polyamide fibres
• CPC Class Codes: B32B 2262/0276 Polyester fibres
• CPC Class Codes: B32B 2262/0292 Polyurethane fibres
• CPC Class Codes: B32B 2262/062 Cellulose fibres, e.g. cotton
• CPC Class Codes: B32B 2262/067 Wood fibres
• CPC Class Codes: B32B 2307/72 Density
• CPC Class Codes: B32B 2307/726 Permeability to liquids, absorption
• CPC Class Codes: B32B 2437/00 Clothing
• CPC Class Codes: B32B 5/022 : Non-woven fabric
• CPC Class Codes: B32B 5/024 : Woven fabric
• CPC Class Codes: B32B 5/026 : Knitted fabric
• CPC Class Codes: B32B 5/04 : characterised by a layer being specifically extensible by reason of its structure or arrangement , e.g. by reason of the chemical nature of the fibres or filaments
• CPC Class Codes: B32B 5/26 : another layer next to it also being fibrous or filamentary relative arrangement of fibres or filaments of different layers B32B5/12
• CPC Class Codes: B32B 7/12 : using interposed adhesives or interposed materials with bonding properties
• CPC Class Codes: D06M 17/06 : Polymers of vinyl compounds
• CPC Class Codes: D06M 17/10 : Polyurethanes polyurea

Abstract

A composite stretch fabric is disclosed that is comprised of a laminate of three layers, the center layer being comprised of a web of a nonwoven polyurethane resin with a basis weight in the range of 50-250 g/m² and an air permeability of at least 10 cc/sec/cm² with stretchable fabric layers adhered to each side thereof, one of which can be a nylon pile and the other of which is a double knit fabric that can be of porous, hollow fiber for sweat absorption, the composite can also be embossed.

Claims

1. A composite stretch fabric material for medical use comprising a nonwoven fabric layer having opposed first and second sides and being formed of a spun elastomeric resin arranged in a random web of fibers, said nonwoven fabric layer being formed of a polyurethane resin, said nonwoven layer being of a weight per unit area in a range of about 50-250 g/m² and having an air permeability rate per unit area of at least 10 cc/sec/cm², a first stretchable fabric layer laminated to the first side of said nonwoven fabric layer, and a second stretchable fabric layer laminated to the second side of said nonwoven fabric layer, said composite material formed by said first and second stretchable fabric layers and said nonwoven fabric layer, said composite material further being air permeable throughout all layers thereof and being elastic in all directions.

2. The composite stretch fabric material according to claim 1 wherein one of said first and second stretchable fabric layers includes a nylon pile fabric layer, and the other of said first and second stretchable fabric layers includes a sweat-absorbing evaporating stretch fabric.

3. The composite stretch fabric material according to claim 2 wherein the sweat-absorbing evaporating stretch fabric is a double knit fabric formed of a fabric knitted from porous hollow fibers.

4. The composite stretch fabric material according to claim 2 wherein the sweat-absorbing evaporating stretch fabric is double knit fabric.

5. The composite stretch fabric material according to claim 2 wherein said nonwoven fabric layer has a surface embossed with a rhombus pattern over at least a portion thereof.