US 6,726,983 B2 · Thermocalendered non-woven elastic laminate

Abstract

An elastic laminate fabric useful for applications including apparel, sanitary products, and the like has an elastic vinylidene isoprene polymer film sandwiched between two outer non-woven layers. The laminate elastic fabric has CD elongation of at least 120%, and has recovery of at least 85% after several cycles of 100% elongation. A method of making the non-woven elastic laminate fabric includes extrusion coating a non-woven web having CD elongation of at least 120% with a vinylidene isoprene polymer film, and then thermocalendaring a second non-woven layer having a CD elongation of at least 120% to the exposed film surface. The mode of thermocalendering includes the use of an engraved calender roll having a discontinuous roll pattern and a land area no greater than 15%.

Claims14

Dependent claims

An elastic non-woven laminate fabric, comprising:

a) a first and second non-woven fabric web comprised of thermoplastic polymers, said web having a CD elongation of at least 120% and a basis weight of between about 10-100 gm/m2;
b) an elastic film comprised of a vinylidene isoprene polymer;
said film having a thickness of between about 0.5 to 3.5 mils;
said elastic film attached to said first and second non-woven webs with said film and said web in substantially relaxed, un-elongated states;
and the elastic non-woven laminate fabric having a CD elongation of at least 120% with an elastic recovery of at least 85% after three cycles of 100% elongation;
c) said elastic film being juxtaposed between said first and second nonwoven web in a laminate construction;
and
d) said laminate construction having a discontinuous bond pattern of no greater than 15% land area.

5 more elements

Dependencies are inferred from the claim text.

Thermocalendered non-woven elastic laminate

Life of this patent

Thermocalendered non-woven elastic laminate

Life of this patent

Abstract

Claims14