Carpet backsized with hot melt adhesive and method

• US 3,887,738 A
• Filed: 05/15/1973
• Issued: 06/03/1975
• Est. Priority Date: 03/04/1971
• Status: Expired due to Term

• Current Assignee: David D. Taft, Terry H. Shepler
• Original Assignee: David D. Taft, Terry H. Shepler
• Inventors: Taft, David D., Shepler, Terry H.
• Primary Examiner(s): McCamish, Marion E.
• Application Number:
  US05/360,616
• Time in Patent Office: 749 Days
• Field of Search: 161/67,62-66,234,247,245,231 156/72,334 117/161UZ,161UH,76T,90,138.8A 260/28.5AV,887
• US Class Current: 428/95
• CPC Class Codes: C08L 2666/34 Oxygen-containing compounds, including ammonium and metal salts
• CPC Class Codes: C09D 123/08 Copolymers of ethene C09D123/16 takes precedence
• CPC Class Codes: C09J 131/04 Homopolymers or copolymers of vinyl acetate
• CPC Class Codes: C09J 2301/304 the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
• CPC Class Codes: Y10S 524/914 Floor covering compositions
• CPC Class Codes: Y10T 428/23979 Particular backing structure or composition
• CPC Class Codes: Y10T 428/31913 Monoolefin polymer

Abstract

Hot melt compositions containing copolymer of ethylene and vinyl acetate and/or alkyl acrylate wherein the alkyl group contains 118 carbon atoms; ester of rosin and polyhydric alcohol; and ester of polyhydric alcohol and dimer and/or trimer of fatty acid are particularly useful as carpet backing adhesives.

Claims

1. copolymer of ethylene and unsaturated ester monomer selected from the group consisting of vinyl acetate, alkyl arcylate wherein the alkyl group contains 1 - 18 carbon atoms, and mixtures thereof, containing from 40 - 85% by weight of ethylene and from 15 - 60% by weight of said unstaturated ester monomer;

2. A tufted carpet comprising:

a. a primary textile backing;

b. tufts of textile fibers protruding from said primary textile backing and forming the surface of the carpet;

c. a secondary textile backing adjacent to the backside of said primary textile backing; and

d. the hot melt coating composition of claim 1 being interposed between said primary and secondary backings.

3. ESTER OF POLYHYDRIC ALCOHOL AND IMER AND/OR TRIMER OR MIXTURE THEREOF, OF ETHYLENICALLY UNSATURATED MONOCARBOXYLIC FATTY ACID HAVING 16-22 CARBON ATOMS, WHEREIN SAID ESTER HAS AN ACID VALUE OF 6 TO 40;

B. APPLYING A UNIFORM COATING IN AN AMOUNT FROM ABOUT 6 TO 40 OUNCES PER SQUARE YARD OF SAID COMPOSITION IN A MOLTEN STATE TO THE BACK SIDE OF SAID CARPET AT A COATING STATION WHILE MOVING SAID CARPET PAST SAID COATING STATION AT A SPEED OF FROM ABOUT 15 TO 80 FEET PER MINUTE;

AND C. THEREAFTER SOLIDIFYING SAID COATING IT BELOW ITS MELTING POINT.

4. The carpet of claim 3 wherein said polyolefin is polypropylene.

5. The carpet of claim 2 wherein said secondary backing is a polyolefin.