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US 4,680,223 AGranted
Fibrous inner web for sheet vinyl flooring goods
AssigneeHercules Incorporated
InventorPeter G. Bither
Life of this patent
Estimating the term…
Abstract
A fibrous web is prepared from a composition comprising woodpulp, glass fibers, polyolefin pulp containing carboxylic functionality, an inorganic filler, a polymeric binder, polyolefin pulp devoid of carboxylic functionality, if desired, and polyvinyl chloride, if desired. The fibrous web is useful as an inner layer in a multi-layer sheet floor covering material.
Claims9
A fibrous web-forming composition comprising
- (a) from about 4% to about 15% woodpulp,
- (b) from about 5% to about 10% glass fibers,
- (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality,
- (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality,
- (e) from about 30% to about 65% inorganic filler,
- (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and
- (g) from 0 to about 20% polyvinyl chloride,
- all percentages being by weight based on the total weight of the composition.
5 more elements
A fibrous web, useful as an inner layer in a multi-layer sheet floor covering material, prepared from a composition comprising
- (a) from about 4% to about 15% woodpulp,
- (b) from about 5% to about 10% glass fibers,
- (c) from about 4% to about 15% polyolefin pulp containing carboxylic functionality,
- (d) from 0 to about 5% polyolefin pulp devoid of carboxylic functionality,
- (e) from about 30% to about 65% inorganic filler,
- (f) from about 10% to about 15% thermoplastic polymeric binder, other than polyvinyl chloride, and
- (g) from 0 to about 20% polyvinyl chloride,
- all percentages being by weight based on the total weight of the composition.
5 more elements
Dependencies are inferred from the claim text.