公开(公告)号：US3555136A

公开(公告)日：1971-01-12

申请号：US3555136D

申请日：1967-06-27

Applicant: RHONE POULENC SA

Inventor： ROUAULT PAUL

IPC: C08J9/24 ,  D04H1/60 ,  D04H13/00 ,  B29D27/08

CPC classification number: D04H1/50 ,  C08J9/24 ,  D04H1/4282 ,  D04H1/587 ,  D04H1/60 ,  D04H13/00

Abstract: POROUS SHEETS ARE MADE BY DEPOSITING ON A SUPPORT A LAYER OF A MIXTURE OF FUSIBLE POWDER AND SHRINKABLE THERMOPLASTIC FIBRILS AND HEATING THE LAYER FROM THE SIDE IN CONTACT WITH THE SUPPORT.