Title:
スピナレットを使用したセルロースアセテートトウを製造する方法
Document Type and Number:
Japanese Patent JP7410232
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for managing uniformity of filaments influenced by spinneret deposition and occlusion.SOLUTION: Cellulose acetate tow is formed by passing a cellulose acetate dope through a spinneret for spinning to form filaments. The filaments are bundled to form the tow. The tow is then crimped, dried and baled. Downstream products produced from the tow include a cigarette filter, where the cigarette filter desirably has uniform characteristics. The uniformity of the downstream products made from a single tow bale may be achieved by cleaning a spinneret contaminated by deposition and/or occlusion. Also disclosed is a further step for improving the uniformity.SELECTED DRAWING: Figure 1A
Inventors:
Austin Pea Banks
Christopher M Bandren
Christopher M Bandren
Application Number:
JP2022115235A
Publication Date:
January 09, 2024
Filing Date:
July 20, 2022
Export Citation:
Assignee:
Celanese International Corporation
International Classes:
D01F2/28; D01D4/04
Domestic Patent References:
| JP5100442B2 | ||||
| JP2011122955A | ||||
| JP5841671B2 |
Foreign References:
| WO2015194007A1 |
Attorney, Agent or Firm:
Osamu Yamamoto
Toru Miyamae
Junichi Matsuo
Koichi Yokota
Toru Miyamae
Junichi Matsuo
Koichi Yokota
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