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:
Jan. 11, 2000
Filed:
May. 15, 1998
Applicant:
Inventors:
Pai-Chuan Wu, Cincinnati, OH (US);
Leopoldo V Cancio, Cincinnati, OH (US);
Girish K Sharma, Cincinnati, OH (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156229 ; 1563082 ; 15624427 ; 156324 ; 2642884 ; 2642902 ; 264414 ;
Abstract
Microporous film products permeable to moisture vapor and which act as barriers to liquid are made by a high speed method. Such microporous products are made at speeds in the order of above 500 fpm to about 1200 fpm. Thermoplastic polymers are melt blended to contain about 35% to about 45% by weight of a linear low density polyethylene, about 3% to about 10% by weight of a low density polyethylene; about 40% to about 55% by weight calcium carbonate filler particles, and about 2% to about 6% by weight of a triblock polymer of styrene.