The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 1980
Filed:
May. 11, 1978
Applicant:
Inventors:
Helmut Kuhn, Konigstein, DE;
Kurt Seiler, Abtsteinach, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428290 ; 156148 ; 428300 ; 428301 ; 428480 ;
Abstract
Spunlaid products are provided especially for the manufacture of substrates for polyvinyl chloride coated structured floor coverings. These products consist of crimpfree polyester filaments which are laid down and bonded. Bonding is carried out first by needling at 80 to 300 stitches/cm.sup.2 to a stitch depth of 11 to 20 mm. After needling, impregnation is carried out using a binder liquor consisting of an aqueous dispersion of a copolymer containing