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:
Dec. 11, 1979
Filed:
Oct. 18, 1977
Applicant:
Inventors:
Joseph J Hall, Bridgewater, NJ (US);
Ralf Korpman, Bridgewater, NJ (US);
Stephen M Sinker, Middlesex, NJ (US);
Assignee:
Johnson & Johnson, New Brunswick, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ; B29B / ;
U.S. Cl.
CPC ...
264 28 ; 260 / ; 260 / ; 260-5 ; 260 / ; 260 / ; 260 / ; 260 / ; 2641 / ; 264211 ; 264349 ;
Abstract
A single screw extrusion process for extruding a mixture of relatively high molecular weight thermoplastic elastomer particles and relatively low molecular weight resin particles, wherein the particulate mixture is supercooled and maintained at temperatures below that which would cause the mixture to agglomerate and stick to the screw until the axial driving forces on the mixture have increased to the extent they will overcome any tendency of the mixture to stick to the screw, thereby assuring steady state extrusion conditions.