Aeration groove filter

Details Aeration groove filter Aeration groove filter

1978-10-26

1980-08-26

Millin, V.

Tobacco

Cigar or cigarette making

Including cooperating surfaces to induce rolling

A24D 304

Patent

active

042190304

ABSTRACT:
The filter plug of the cigarette is provided with an annular peripheral groove to enable air to pass directly into the fibrous body of the filter material after passing through apertures in the tipping paper. Use is made of ordinary plug wrap paper instead of a high porosity tea bag paper to wrap the fibrous filter material. The groove extends through the layer of plug wrap paper and thus communicates directly with the filter material.

REFERENCES:
patent: 4022221 (1977-05-01), Berger
patent: 4135523 (1979-01-01), Luke et al.
patent: 4149546 (1979-04-01), Luke et al.

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