Cellulose acetate tow and method of making same

Details Cellulose acetate tow and method of making same Cellulose acetate tow and method of making same

2005-08-02

2005-08-02

Edwards, N. (Department: 1774)

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

C428S393000, C131S331000

Reexamination Certificate

active

06924029

ABSTRACT:
A cigarette filter tow is a cellulose acetate tow having a high uncrimping energy (UCE) and a low fly. In one embodiment, the average UCE is greater than 280 and the average fly is less than or equal to 0.030 grams per 30 minutes. In another embodiment, the average UCE is greater than 265 and the average fly is less than or equal to 0.023 grams per 30 minutes. In another embodiment, the average UCE is greater than 250 and the average fly is less than or equal to 0.017 grams per 30 minutes.

REFERENCES:
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patent: 3353239 (1967-11-01), Heijnis
patent: 4074724 (1978-02-01), Morie et al.
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patent: 5491024 (1996-02-01), Brodof et al.
patent: 5591388 (1997-01-01), Sellars et al.
patent: 5618620 (1997-04-01), Takegawa et al.
patent: 56-53223 (1981-05-01), None
patent: 2964191 (1993-07-01), None
patent: WO 02/087366 (2002-11-01), None

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