发明名称 |
PERFECTIONNEMENTS AUX ARTICLES A FUMER |
摘要 |
The invention is concerned with a method for the production of tobacco-smoke filters in which an additive is introduced into a rod of tobacco-smoke filter material by means of holes pierced, for example by needles, in the said rod. The filter material may be an extruded open-cell foam material, such as polyethylene or polypropylene material. The pierced rod may be passed through a bath of the additive in such a manner that the additive is taken into the rod through the holes. |
申请公布号 |
BE773621(A1) |
申请公布日期 |
1972.01.31 |
申请号 |
BE19710773621 |
申请日期 |
1971.10.07 |
申请人 |
BRITISH-AMERICAN TOBACCO CY LTD, WESTMINSTER HOUSE, 7, MILLBANK, LONDRES S.W.1, (GR.-BR.), |
发明人 |
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分类号 |
A24D3/02;(IPC1-7):24C/ |
主分类号 |
A24D3/02 |
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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