发明授权
- 专利标题: Spunbond cigarette filter
- 专利标题(中): 纺粘香烟过滤嘴
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申请号: US148078申请日: 1993-11-03
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公开(公告)号: US5538019A公开(公告)日: 1996-07-23
- 发明人: Edward P. Bullwinkel , Leon E. Chambers, Jr. , Robert G. Geer
- 申请人: Edward P. Bullwinkel , Leon E. Chambers, Jr. , Robert G. Geer
- 申请人地址: GA Alpharetta
- 专利权人: Schweitzer-Mauduit International, Inc.
- 当前专利权人: Schweitzer-Mauduit International, Inc.
- 当前专利权人地址: GA Alpharetta
- 主分类号: A24D3/02
- IPC分类号: A24D3/02 ; A44B18/00 ; A61F13/62 ; D04H3/16 ; D04H13/00 ; A24D1/04
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.
公开/授权文献
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