发明名称 |
ROKVERK VARS HOLJE HAR EN JEMN LUFTPERMEABILITET AV HOGST 3 CORESTAENHETER |
摘要 |
A smoking article such as a cigarette has a rod of smoking material wrapped in a wrapper of which the substantially uniform air permeability due to viscous flow is not more than 3 and preferably not more than 2 Coresta Units and of which the Do/t value is in the range of 0.08 to 0.65 cm sec-1, preferably 0.15 to 0.25 cm sec-1. The length of the rod of smoking material may suitably be within a range of 25 to 55 mm. A reduction in sidestream TPM delivery of 40% or more can be obtained. The invention is also concerned with a smoking-article wrapper material which satisfies the above permeability and Do/t value requirements. |
申请公布号 |
SE450619(B) |
申请公布日期 |
1987.07.13 |
申请号 |
SE19820001215 |
申请日期 |
1982.02.26 |
申请人 |
BRITISH-AMERICAN TOBACCO CO LTD |
发明人 |
R R * BAKER;F J * DASHLEY |
分类号 |
A24C5/60;A24D1/02;D21H27/00;(IPC1-7):A24D1/02;D21H5/16 |
主分类号 |
A24C5/60 |
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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