发明名称 |
Tobacco filter material and a tobacco filter as produced using the same |
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 rod-form. 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 DEG 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).
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申请公布号 |
US5678577(A) |
申请公布日期 |
1997.10.21 |
申请号 |
US19950550640 |
申请日期 |
1995.10.31 |
申请人 |
DAICEL CHEMICAL INDUSTRIES, LTD. |
发明人 |
MATSUMURA, HIROYUKI;SHIMAMOTO, SYU;SHIBATA, TOHRU |
分类号 |
A24D3/10;(IPC1-7):B01D27/00 |
主分类号 |
A24D3/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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