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:
Sep. 23, 1997
Filed:
Jul. 22, 1996
Applicant:
Inventor:
Dale R Anderson, St. Paul, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
D06C / ; B29C / ;
U.S. Cl.
CPC ...
26 185 ; 26 186 ; 264175 ; 264282 ;
Abstract
A mechanically compacted composite article comprising a PTFE fibril matrix that entraps particles retains more of its longitudinal dimension, when subjected to mechanical and/or thermal stress, than a similar but non-mechanically compacted article. A method of making a particulate loaded PTFE fibril web is disclosed, the method including biaxial calendaring to form a sheet or sheet laminate, and machanically compacting the sheet or sheet laminate.