发明授权
US5927287A Tobacco filter material and a tobacco filter as produced using the same
失效
烟草过滤材料和使用其制造的烟草过滤嘴
- 专利标题: Tobacco filter material and a tobacco filter as produced using the same
- 专利标题(中): 烟草过滤材料和使用其制造的烟草过滤嘴
-
申请号: US865672申请日: 1997-05-30
-
公开(公告)号: US5927287A公开(公告)日: 1999-07-27
- 发明人: Hiroyuki Matsumura , Syu Shimamoto , Tohru Shibata
- 申请人: Hiroyuki Matsumura , Syu Shimamoto , Tohru Shibata
- 申请人地址: JPX Osaka
- 专利权人: Daicel Chemical Industries, Ltd.
- 当前专利权人: Daicel Chemical Industries, Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX6-292148 19941031; JPX6-292149 19941031
- 主分类号: A24D3/10
- IPC分类号: A24D3/10 ; A24D3/06
摘要:
A tobacco filter is produced by wrapping up a sheet-like filter material having a web structure and comprising a cellulose ester short staple into a rodform. As the cellulose ester short staple, a short staple that is non-crimped and/or has a modified cross section where a ratio D1/D2 of a diameter D1 of the circumscribed circle to a diameter D2 of the inscribed circle, each circle being of the cross section, of not less than 2 is used. The short staple includes e.g. a cellulose acetate fiber with an average fiber length of 1 to 10 mm and fineness of 1 to 10 deniers. The short staple may be incorporated with a beaten pulp with a Schopper-Riegler freeness of 20 to 90.degree. SR and/or a binder. The ratio of the short staple to the beaten pulp may for example be about 90/10 to 20/80 (by weight).
公开/授权文献
- US5309177A Image recording apparatus 公开/授权日:1994-05-03
信息查询