发明名称 |
filtro para um artigo para fumar, artigo para fumar, e, método para fabricar um artigo para fumar |
摘要 |
A filter for a smoking article comprises elongate body 4 of filter material 7 for filtering smoke, an inner wrapper comprising first and second regions 9, 10 of non-porous material around and spaced apart along the length the filter material 7 to define a gap 11 that acts as a ventilation zone, and an outer wrapper 13 of porous material overlying the inner wrapper such as to allow ventilation air to be drawn through the ventilation zone and pass into the filter material (a) through the porous third wrapper and (b) longitudinally between inner wrapper and the outer wrapper. |
申请公布号 |
BRPI0922161(A2) |
申请公布日期 |
2015.12.29 |
申请号 |
BR2009PI22161 |
申请日期 |
2009.11.20 |
申请人 |
BRITISH AMERICAN TOBACCO ( INVESTMENTS) LIMITED |
发明人 |
RICHARD FIEBELKORN |
分类号 |
A24D3/04 |
主分类号 |
A24D3/04 |
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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