Stock material or miscellaneous articles – Structurally defined web or sheet – Discontinuous or differential coating – impregnation or bond
Patent
1994-05-04
1995-08-01
Marquis, Melvyn I.
Stock material or miscellaneous articles
Structurally defined web or sheet
Discontinuous or differential coating, impregnation or bond
428224, 428297, 428903, 4289033, D04H 158, D04H 316, D04H 152
Patent
active
054379229
ABSTRACT:
A fibrous, non-woven thermal insulation comprises synthetic polymeric resin microfibers, staple fibers and bonding fibers which are randomly oriented and randomly intermingled in a single layer. The microfibers comprise between 25% and 95% by weight virgin synthetic polymeric resin and between 5% and 75% by weight recycled polyethylene teraphthalate. The microfibers have an average diameter between 1 to 8 microns and comprise between 35% and 80% by weight of the insulation; the staple fibers have and average diameter between 10 and 30 microns and comprise between 15% and 60% by weight of the insulation; and the bonding fibers have an average diameter between 14 and 30 microns and comprise between 5% and 25% by weight of the insulation. The bonding fibers have thermoplastic surfaces with a lower temperature softening point than the microfibers and staple fibers and bond the fibers together to form the insulation material.
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Jackson Fred L.
McHugh Kevin P.
Robertson John S.
Lee Helen F.
Marquis Melvyn I.
Quinn Cornelius P.
Schuller International, Inc.
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