Cellulose acetate band, and method for producing cellulose acetate band
AssigneeDaicel Corporation
InventorKazuma Oguni
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Abstract
The problem to be solved by the present invention is to prevent interruption of a cellulose acetate fiber during spinning of the cellulose acetate fiber thereby enhancing production efficiency of a cellulose acetate band. The cellulose acetate band according to an embodiment of the present invention is formed from cellulose acetate fibers, a total denier thereof is set to a value in a range from 8000 to 44000, a content of titanium oxide is set to a value in a range from 0 wt. % to 0.01 wt. %, and a content of a lubricant in the band measured by a diethyl ether extraction method is set to a value in a range greater than 5 mg but 65 mg or less per 1 m.
Claims3
A cellulose acetate band for cigarette filters formed from uniformly crimped cellulose acetate fibers,
- a total denier thereof being set to a value in a range from 8000 to 44000, a content of titanium oxide therein being set to a value in a range from 0 wt. % to 0.01 wt. %, a content of a lubricant in the cellulose acetate band measured by a diethyl ether extraction method being set to a value in a range of greater than 5 mg but 65 mg or less per 1 m, and a denier per filament thereof is set to a value in a range from 8.0 to 12.0,
- wherein crimping (%) of the cellulose acetate band calculated by Equation 1 is set to a value in a range from 10% to 40%;
- Crimping (%)=[(L1−L0)/L0]×100 [Equation 1]
- where L0 is a length of the cellulose acetate band in a case where a load of 250 g is applied to the cellulose acetate band having a length of 250 mm in a direction in which crimp of the crimped cellulose acetate fibers is stretched, and L1 is a length of the cellulose acetate band in a case where a load of 2500 g is applied to the cellulose acetate band having the length of 250 mm in the direction.
Dependencies are inferred from the claim text.