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:
May. 16, 1978
Filed:
Nov. 26, 1974
Applicant:
Inventor:
Richard P Crowley, Boston, MA (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29H / ; B32B / ;
U.S. Cl.
CPC ...
428159 ; 156 79 ; 156277 ; 264 52 ; 264 54 ; 427264 ; 427302 ; 427373 ; 427375 ; 428170 ;
Abstract
A chemically embossed cellular vinyl chloride resin sheet material is prepared by treating the gelled surface of a vinyl chloride resin plastisol containing a blowing agent and a peroxide catalyst which induces polymerization of an acrylic monomer or resin with a liquid which contains an acrylic monomer or resin subject to polymerization, and subsequently heating the treated gelled vinyl chloride resin sheet material to polymerize the acrylic monomer or resin and to decompose the blowing agent, whereby full expansion of the sheet material is prevented by the polymerization in the treated areas, thereby producing a chemically embossed product.