A COEXTRUDED PROFILED FILM AND A METHOD OF MANUFACTURING THE FILM

Application 4487/CHENP/2006 published 2007-06-15, filed 2006-12-07
A thermoplastic polymeric film (110) comprising two (112, 113) or more polymer layers which film has a series of oscillating peaks and valleys which peaks and valleys extend in a first direction forming continuous ridges with at least one polymer layer partitioned disproportionally in the peaks and at least a second polymer layer such that two or more polymer layers vary in thickness across the film width and a method for manufacturing the film.

Applicant

1)3M INNOVATIVE PROPERTIES COMPANY
:3M CENTER, P O BOX 33427, SAINT PAUL MN 55133-3427, USA U.S.A.

Inventor

1)AUSEN, RONALD, W. 2)VENNE, JANET, A. 3)VENNE, JANET, A 4)SETH, JAYSHREE

International Info

Classification: B29C 47/00
Publication Number: WO 2005/123363 A1
Application Date: 2005-05-06

Priority Information

10/863,717 U.S.A. 2004-06-08