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CIGARETTE FILTER:TWO CONCENTRIC LAYERS OF FIBROUS FILTER MATERIALS SURROUNDED BY POROUS PLUGWRAP PAPER
CIGARETTE FILTER:TWO CONCENTRIC LAYERS OF FIBROUS FILTER MATERIALS SURROUNDED BY POROUS PLUGWRAP PAPER
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机译:卷烟滤纸:多孔填料纸包裹的两层纤维滤纸材料
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摘要
This invention relates to a cigarette filter composed of two concentric cylindrical layers of fibrous filter materials, in which the inner cylindrical layer has a lower draw resistance than the outer cylindrical layer.
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