Combination cellulosic/thermoplastic batt insulation and a metho

Details Combination cellulosic/thermoplastic batt insulation and a metho Combination cellulosic/thermoplastic batt insulation and a metho

1993-11-22

1995-05-23

Lesmes, George F.

Stock material or miscellaneous articles

Sheet including cover or casing

Noninterengaged fibered material encased

428283, 428297, 428903, 428920, 156 622, 156337, B32B 104, B32B 302, B32B 516

Patent

active

054180317

ABSTRACT:
Batt style insulation comprised of cellulosic and thermoplastic material and a method of making such insulation. A blend of cellulosic material and thermoplastic fibrous material, wherein the latter comprises between 3%-15% of the blend by weight, is formed by a method such as air-laying into a low density, high loft mat. The surface of the mat is flame-treated to melt the thermoplastic component on the surface, forming a skin which keeps the cellulosic component intact. The thermoplastic component in the interior of the mat remains unmelted, thereby providing the mat with a spring-back characteristic which allows the mat to retain most of its original shape and loft even after it has been compressed for shipping. A facing sheet can be applied to the surface of the mat, as is done with conventional fiberglass batt-style insulation.

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patent: 4812283 (1989-03-01), Farley et al.
patent: 5082605 (1992-01-01), Brooks et al.
patent: 5088910 (1992-02-01), Goforth et al.
patent: 5096046 (1992-03-01), Goforth et al.

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