公开(公告)号：EP0726977B1

公开(公告)日：2000-06-14

申请号：EP95901114.9

申请日：1994-11-03

申请人： KIMBERLY-CLARK WORLDWIDE, INC.

发明人： BULLWINKEL, Edward, Paul ,  CHAMBERS, Leon, Eugene, Jr. ,  GEER, Robert, Gillette ,  SHULTZ, Jay, Sheldon

IPC分类号： D04H13/00 ,  D04H3/16 ,  A61F13/62 ,  A24D3/02

CPC分类号： A44B18/0011 ,  A24D3/0237 ,  A61F13/627 ,  B32B5/022 ,  B32B5/18 ,  B32B5/245 ,  B32B5/26 ,  B32B27/12 ,  B32B27/32 ,  B32B27/34 ,  B32B27/36 ,  B32B2262/0253 ,  B32B2262/0261 ,  B32B2262/0276 ,  B32B2307/514 ,  B32B2307/718 ,  B32B2307/724 ,  B32B2435/00 ,  B32B2555/02 ,  D04B21/04 ,  D04B21/145 ,  D04H3/16 ,  D04H11/08 ,  D10B2501/0632 ,  D10B2509/02

摘要： A filter made from a nonwoven spunbond web comprising a plurality of continuous intertwined filaments, each filament having a diameter of about 25 to about 100 microns, predominantly present in the web as loop springs having diameters of about 1 to 3 millimeters. The web is made from a plurality of spunbond filaments laid randomly onto a moving belt. The webs of the present invention find particular utility when formed into cylinders as filters for smoking articles. In the smoking articles, the filters of the invention have a desirable degree of firmness while demonstrating an acceptable pressure drop.