A THERMALLY STABLE BREATHABLE FILM.
Application 1890/MAS/1998 published 2006-11-24, filed 1998-08-21
The present invention relates to a thermally stable breathable film, comprising a microporous film comprising a thermoplastic polymer blend and a filler, said thermoplastic polymer blend comprising a first ethylene polymer having a density below 0.89 g/cm3 and a second ethylene polymer having a density above 0.90 gicm3 and wherein said first ethylene polymer and said second ethylene polymer each comprise between 25% by weight and 75% by weight of said thermoplastic polymer blend; a filler comprising at least 35% by weight of said microporous film; and wherein said microporous film has voids adjacent said filler and further wherein said film has a WVTR of at least 300 gim2/24 hours at 37º C and less than 15% heat shrinkage at 37ºC.
Applicant
KIMBERLY-CLARK WORLDWIDE, INC.,
401 NORTH LAKE STREET,NEENAH,, WISCONSIN 54956,, U.S.A.
Inventor
International Info
Classification: C 08 L 25/02 , C 08 J 05/18,09/28 , C 08 L 23/08 , A 61 L 15/22 , B 32 B 27/32 .
Publication Number:
Priority Information
60/059,001 . 09/122,326 . U.S.A 1997-09-15