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, 2001
Filed:
Apr. 02, 1999
Applicant:
Inventors:
Richard Albert Jones, Leeds, GB;
Ian Macmillan Ward, Leeds, GB;
Peter John Hine, Leeds, GB;
Mark James Bonner, Leeds, GB;
Assignee:
BTG International Limited, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C 3/508 ; B29C 4/302 ;
U.S. Cl.
CPC ...
B29C 3/508 ; B29C 4/302 ;
Abstract
A polyolefin plaque is made by hot compaction of an assembly of fibers of the oriented polymer. It has been found to be beneficial to subject the fibers to a prior crosslinking process. Hot compaction is then less temperature-sensitive and produces plaques with excellent hot strength properties. Preferably the fibers have been subjected to prior stages of irradiation and annealing, both in a non-oxidizing environment, for example acetylene.