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US 4,808,459 AGranted
Carpet with polyvinylidene chloride latex tuft-lock adhesive coating
AssigneeCollins & Aikman Corporation
InventorsVernon C. Smith, Ruth C. Roberts
Life of this patent
Estimating the term…
Abstract
A pile carpet having a primary backing with pile yarns extending from the primary backing is provided with a tuft-lock coating comprising a copolymer of vinylidene chloride with at least one acrylic monomer, and having a glass transition temperature of 0.degree. C. or less. The coating imparts excellent tuft-lock properties to the carpet and also serves as a thermoplastic adhesive layer for laminating the carpet to a secondary backing.
Claims15
A pile carpet comprising:
- a primary backing,
- pile yarns extending from the front of said primary backing to form pile tufts, and having portions extending through the primary backing to the rear thereof, and
- a tuft-lock coating carried by the rear of said primary backing and securing said pile yarns to said primary backing, said tuft-lock coating comprising a copolymer of vinylidene chloride with at least one acrylic monomer, said copolymer having a glass transition temperature of 0.degree. C. or less, and said coating having thermoplastic adhesive properties capable of subsequent activation for bonding of the carpet to a secondary backing.
A pile carpet comprising:
- a primary backing formed of a woven or nonwoven fabric,
- pile yarns extending from the front of said primary backing to form pile tufts, and having portions extending through the primary backing to the rear thereof, and
- a tuft-lock coating carried by the rear of said primary backing and securing said pile yarns to said primary backing, said coating having thermoplastic adhesive properties capable of subsequent activation for bonding of the carpet to a secondary backing and having improved flame and smoke retardant properties, and comprising a copolymer of vinylidene chloride with an alkyl acrylate monomer, said copolymer having a glass transition temperature of 0.degree. C. or less, and dispersed in said copolymer an aluminum trihydrate filler in an amount of from about 40 to 70 percent by weight so as to further improve the flame and smoke retardant properties of the coating.
A method of preparing a pile carpet comprising:
- (a) applying to the rear surface of the primary backing of a carpet and in contact with pile yarn extending through the rear surface of the backing, a tuft-lock coating comprising a copolymer of vinylidene chloride with at least one acrylic monomer, said copolymer having a glass transition temperature of 0.degree. C. or less, and said coating having activatable thermoplastic adhesive properties capable of subsequent activation;
- (b) heating the rear surface of the primary backing to dry the latex coating composition and to secure the pile yarns to the primary backing;
- (c) thereafter heating the dried latex coating to activate the thermoplastic adhesive properties thereof;
- and
- (d) bonding a secondary backing to the primary backing utilizing the thermoplastic adhesive properties of the latex coating.
2 more elements
Dependencies are inferred from the claim text.