Smoking article exhibiting reduced sidestream smoke, and wrapper paper
therefor
    6.
    发明授权
    Smoking article exhibiting reduced sidestream smoke, and wrapper paper therefor 失效
    展示减少侧流烟雾的吸烟制品,以及包装纸

    公开(公告)号:US4998543A

    公开(公告)日:1991-03-12

    申请号:US361245

    申请日:1989-06-05

    IPC分类号: A24D1/02 D21H27/00

    CPC分类号: A24D1/02

    摘要: The sidestream smoke associated with a cigarette or cigarette-like smoking article is reduced by wrapping the tobacco in a double layer of paper. Each layer includes calcium carbonate (i.e., about 30-40% by weight in the outer paper and about 2-15% by weight in the inner paper, the calcium carbonate in the outer paper having a surface area of about 20-80 square meters per gram by the BET method) and a burn control chemical. The outer layer also preferably includes monoammonium phosphate and sodium carboxy methyl cellulose. The calcium carbonate employed has a relatively high surface area per unit weight. The porosity of the outer layer is about 50-100 cubic centimeters per minute by the Coresta method, and may be adjusted by electrostatic perforation.