Tobacco – Smoke separator or treater – Having a polymer
Patent
1978-05-15
1981-04-14
Ball, Michael W.
Tobacco
Smoke separator or treater
Having a polymer
131340, 131344, 156180, 493 43, A24C 550
Patent
active
042613736
ABSTRACT:
Molding tobacco filters having a variety of cross-sections which are practically useful in providing various preferable effects such as improvement in pressure drop, balanced adsorption of smoke component or the like, are provided according to a method which is characterized in forming fiber bundles of composite fibers consisting of a first and a second component by themselves, or a mixture of at least 20% by weight (based upon the total fiber mixture) of said composite fibers and another kind of fibers so as to give a variety of cross-sections to said fiber bundles, and subjecting said fiber bundles to heat-treatment at a temperature lower than the melting point of the first component but higher than the melting point of the second component to stabilize the structure by the self-adhesion of the second component; the first component of a fiber forming polymer and the second component consisting of one or more kinds of polymer having a melting point lower than that of the first component by 10.degree. C. or more, being disposed in side-by-side or sheath and core relationship so as to give a circumferential ratio of 50.about.100% of the fiber cross-section.
REFERENCES:
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patent: 3558392 (1971-01-01), Goodenou et al.
patent: 3645819 (1972-02-01), Fujii et al.
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patent: 4173504 (1979-11-01), Tomioka et al.
Kunimune Kohichi
Tamaoki Akimichi
Tanaka Shinichiro
Tomioka Susumu
Ball Michael W.
Chisso Corporation
Philpitt Fred
The Japan Tobacco & Salt Public Corp.
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