Recycling cellulose esters from the waste from cigarette manufac

Details Recycling cellulose esters from the waste from cigarette manufac Recycling cellulose esters from the waste from cigarette manufac

1994-11-28

1996-04-02

Mullis, Jeffrey

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Process of treating scrap or waste product containing solid...

521 48, 131 96, C08J 1100

Patent

active

055041205

ABSTRACT:
A process for recycling waste from the manufacture of filtered cigarettes is disclosed herein. The process comprises the following steps: A waste stream from the manufacture of filtered cigarettes is provided. The waste stream includes tobacco, filter tips comprising cellulose ester polymer, and paper. A substantial portion of the filter tips is separated from this waste stream. The filter tips are washed with a sufficient volume of water to liberate bound tipping paper and to remove contaminants from the cellulose ester polymer. Oxidizers may be added to improve tip color and/or serve as a pretreatment. The cellulose ester polymer may then be dried, resolutioned, and processed into useful articles of commerce.

REFERENCES:
patent: 2264828 (1941-12-01), Crum
patent: 2860132 (1958-11-01), White et al.
patent: 3012914 (1961-12-01), Battista et al.
patent: 3224451 (1965-12-01), Dearsley
patent: 4191199 (1980-03-01), Sullivan
patent: 4261790 (1981-04-01), Brinker et al.
patent: 4298013 (1981-11-01), Semp et al.

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