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:
Jun. 07, 1983
Filed:
Jun. 03, 1980
Applicant:
Inventor:
Wolfgang Pip, Darmstadt, DE;
Assignee:
Rohm GmbH, Darmstadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264 55 ; 249 82 ; 249160 ; 264 53 ; 264 54 ; 264D / ; 4258 / ;
Abstract
What is disclosed is a method for making a foamed resin sheet from a body of hot foamable synthetic resin containing a blowing agent, which method comprises heating said foamable body to a temperature which initiates foaming, limiting lateral expansion of the resulting foam by contact with a limiting surface while permitting free expansion of the foam thickness, then limiting further expansion of the foam thickness by contact with a limiting surface, and then cooling the foam below the foaming temperature while maintaining said limitations on foam expansion in the lateral and thickness directions by contact with said limiting surfaces.