Thermal insulation material comprising a mixture of silk and synthetic fiber staple
AssigneeWarnaco Inc.
InventorWilliam E. Aldrich
Life of this patent
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Abstract
An improved thermal insulation material comprising a carded web containing 30 to 80 wt. %, preferably 50 wt. % silk, the balance being crimped, hollow polyester staple or very low denier solid cross section polyester filaments. The carded web is uniformly impregnated with a thermosetting resin to form a bat which is employed as a filler for garments, sleeping bags and the like.
Claims10
A thermal insulation material comprising a treated batting, said batting being formed from a carded web, said web containing at least 30 wt. % of natural silk fibers and a synthetic fiber staple, said synthetic fiber staple being formed from crimped polyester filaments having a denier per filament in the range of 1 to 6, said batting being formed by uniformly impregnating said carded web with a thermosetting resin capable of forming a relatively rigid, non-tacky structure after curing.
A thermal insulation material comprising a treated batting, said batting being formed from a carded web, said web being a mixture of 30 to 80 wt. % of natural silk fibers and 70 to 20 wt. % of crimped polyester fiber staple having an average length of 11/8th to 21/2 inches, said polyester fiber staple being formed from hollow filaments having a denier of 3 to 6 per filament, said batting being formed by uniformly impregnating said carded web with a thermosetting resin capable of forming a relatively rigid, non-tacky structure after curing.
A thermal insulation material comprising a treated batting, said batting being formed from a carded web, said web containing at least 30 wt. % of natural silk fibers and a polyester fiber staple, said polyester fiber staple being formed from filaments having a denier of 1 to 6 per filament, said batting being formed by uniformly impregnating said carded web with trimethylol melamine formaldehyde resin.
Dependencies are inferred from the claim text.