US 7,022,632 B2 · Composite nonwoven fabric for protective clothing and production method thereof

Abstract

The composite nonwoven fabric for protective clothing of the present invention comprises (A) a water vapor-permeable, water-resistant nonwoven fabric made of polyolefin-based ultra-fine fibers having an average fiber diameter of 5 μm or less, (B) a heat-bonding nonwoven fabric made of thermoplastic elastomer ultra-fine fibers, and (C) a porous fabric. The nonwoven fabric B is interposed between the nonwoven fabric A and the porous fabric C, and the fabrics A, B and C being integrally bonded to each other. The composite nonwoven fabric is suitable for a protective clothing because it is water vapor-permeable and water-resistant on its outer side to be exposed to outside air, and is of high strength, sweat-absorbable and antistatic on its inner side, and also well-balanced in these properties.

Claims5

Dependent claims

A composite nonwoven fabric for protective clothing, comprising:

(A) a water vapor-permeable, water-resistant nonwoven fabric made of polyolefin-based ultra-fine fibers having an average fiber diameter of 5 μm or less;
(B) a heat-bonding nonwoven fabric made of thermoplastic elastomer ultra-fine fibers;
and
(C) a porous fabric, wherein the porous fabric is a hydroentangled nonwoven fabric comprising 100% of rayon fibers or a 30/70 to 70/30 by mass polyester fiber/rayon fiber mixture;
the nonwoven fabric B being interposed between the nonwoven fabric A and the porous fabric C, and the fabrics A, B and C being integrally bonded to each other.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/440,147Filed 19 May 2003

Priority

JP 2002/14482920 May 2002

Published

US 2004/0176009 A19 Sep 2004

Granted

4 Apr 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification19 codes

B32B 5/26
One layer being a fibrous or filamentary layer: another layer next to it also being fibrous or filamentary
D04H 1/492
By needling or like operations to cause entanglement of fibres: by fluid jet
D04H 1/559
By welding together the fibres, e.g. by partially melting or dissolving: the fibres being within layered webs
D04H 1/56
By welding together the fibres, e.g. by partially melting or dissolving: in association with fibre formation, e.g. immediately following extrusion…

Composite nonwoven fabric for protective clothing and production method thereof

Life of this patent

Composite nonwoven fabric for protective clothing and production method thereof

Life of this patent

Abstract

Claims5