Acetate tow having high crimp modulus and manufacturing method t

Details Acetate tow having high crimp modulus and manufacturing method t Acetate tow having high crimp modulus and manufacturing method t

1990-11-16

1993-07-06

Lesmes, George F.

Stock material or miscellaneous articles

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

Rod, strand, filament or fiber

428339, 428362, 131344, D02G 300, B32B 516

Patent

active

052252779

ABSTRACT:
An acetate tow having crimp modulus, wherein a degree of crimping of the acetate tow at a position just downstream of a delivery roller of a filter rod making machine used to form a filter rod is 1.4 or more.
When the acetate tow is bloomed in the filter rod making machine, a tendency which the acetate tow is caught on a feed roller becomes very low, and when the filter rod is formed of the acetate tow, a filter rod having a high pressure drop can be obtained.
The present invention further includes a method of manufacturing the acetate tow, in which a specified acetone content is maintained in the acetate tow and a specified temperature, determined on the basis of the acetone content, is used in a process of crimping the acetate tow.

REFERENCES:
patent: 2794239 (1957-06-01), Crawford et al.
patent: 2953838 (1960-09-01), Crawford et al.
patent: 3078542 (1963-02-01), McFarren et al.
patent: 3079663 (1963-03-01), Dyer et al.

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