Polyester fiberfill
AssigneeE. I. DuPont de Nemours and Company
InventorIlan Marcus
Life of this patent
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Abstract
Blends of polyester fiberfill and binder fiber, wherein the fiberfill is coated with a hydrophilic poly(alkylene oxide) type finish that cures on to the polyester fibers and so provides improved properties in the eventual bonded product, including combinations of improved durability, soft hand, good bonding, reduced flammability and improved moisture transport.
Claims15
An improved polyester fiberfill blend consisting essentially of, by weight, (a) from about 60 to about 95% of crimped polyester staple fiber, and (b) complementally, to total 100%, from about 5 to about 40% of crimped staple binder fiber, comprising a polymer having a binding temperature lower than the softening temperature of the said polyester staple fiber, characterized in that the said polyester stable fiber has a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide).
A through-bonded batt of polyester fiberfill of improved durability, and moisture transport, soft bonding, and low flammability, characterized in that the polyester fibers are coated with a slickener consisting essentially of chains of poly(alkylene oxide).
A process for preparing a bonded batt of polyester fiberfill, wherein polyester fiber having a coating cured thereto of a slickener consisting essentially of chains of poly(alkylene oxide) is blended with binder fiber, the blend is formed into a batt, and the batt is heat-treated to cause the binder fiber to effect bonding at intersections of the coated polyester fiberfill.
Dependencies are inferred from the claim text.