US 6,802,081 B1 · Moisture absorbing/releasing and heat generating inner cloth and method of producing it and moisture absorbing/releasing, heat generating and heat-retaining articles

Abstract

The moisture-absorbent/releasable heat-generating intermediate material of the present invention is inserted between an outer material and a lining, both having a moisture-permeable/waterproof property, a windproof property and other desired properties, thereby constituting a heat-retaining article. It comprises a blend of a heat-retaining fiber including an air layer of not less than 50 ml per 1 gram and a moisture-absorbent/releasable heat-generating fiber. The moisture-absorbent/releasable heat-generating fiber generates heat by absorbing moisture in a vapor phase or in a liquid phase discharged from a human body and an immobile air layer formed by the heat-retaining fiber retains the heat.

Claims20

Dependent claims

A moisture-absorbent/releasable heat generating material for use in an article of clothing, prepared by a manufacturing process of:

providing a first moisture-absorbing heat generating fiber that comprises a crosslinked acrylic fiber prepared by crosslinking with a nitrogen containing compound and by hydrolysis of uncrosslinked residues;
providing a second heat retaining fiber or feather;
drying the first fiber to an inherent minimum moisture content;
and homogeneously blending the first fiber with the second fiber or feather in a weight ratio of between 1 to 9 and 4 to 6 while the first fiber is at its inherent minimum moisture content.

1 more element

Dependencies are inferred from the claim text.

Moisture absorbing/releasing and heat generating inner cloth and method of producing it and moisture absorbing/releasing, heat generating and heat-retaining articles

Life of this patent

Moisture absorbing/releasing and heat generating inner cloth and method of producing it and moisture absorbing/releasing, heat generating and heat-retaining articles

Life of this patent

Abstract

Claims20