Low stress relaxation composite elastic material

Details Low stress relaxation composite elastic material Low stress relaxation composite elastic material

1990-01-10

1992-12-08

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428171, 428172, 428181, 428182, 428186, 428198, 428283, 428284, 428286, 428287, 428296, 428297, 428298, 428326, 428903, B32B 2714

Patent

active

051697068

ABSTRACT:
A composite elastic material having a stress relaxation of less than about 30 percent is composed of at least one elastic sheet formed from a blend of (1) a styrene-poly(ethylene-propylene)-styrene thermoplastic elastomeric block copolymer or a mixture of styrene-poly(ethylene-propylene)-styrene and styrene-poly(ethylene-butylene)-styrene elastomeric block copolymers, and (2) a tackifying resin. The blend may also include a polyolefin and/or an extending oil. The elastic sheet is joined to at least one gatherable layer at spaced-apart locations in which the gatherable layer is gathered between the spaced-apart locations so that the composite material is elastic.

REFERENCES:
patent: 4892903 (1990-01-01), Himes

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