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. 14, 1988
Filed:
Dec. 17, 1986
Applicant:
Inventors:
Thomas E Benim, Kinston, NC (US);
Michael A Hamilton, Kingston, CA;
Assignee:
E. I. Du Pont De Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
428220 ; 2641 / ; 2642101 ; 2642106 ;
Abstract
A process is provided for preparing an elastic film of a specific elastomeric composition which is formed by melt blending two particular elastomers, each of which is composed of hard and soft segments made from poly(tetramethylene ether)glycol, 1,4-butane diol and a phenylene dicarboxylic acid or a derivative thereof. One of the elastomers has an inorganic anti-blocking agent compounded in it. The process includes the steps of melt blending, melt extrusion, quenching and providing a draw-down of 12 to 40 to form a film which is particularly suited for use as elastic leg-strips in diapers.