Title:
The compound expression air-bubbles omission method of the spinning solution of hyperviscous pure chitosan
Document Type and Number:
Japanese Patent JP6152479
Kind Code:
B2
Abstract:
The present invention discloses a combined degassing method for a high-viscosity pure-chitosan spinning solution, comprising the following steps of:
step 1, thoroughly dissolving the spinning solution in a dissolution vessel for subsequent use, the viscosity thereof reaching 450,000-500,000 mpa·s;
step 2, delivering the spinning solution in step 1 to the feed port of a degassing vessel from the dissolution vessel after filtration;
step 3, in the degassing vessel, under the conditions of vacuumizing and maintaining the inner pressure of the degassing vessel to be 500-3,000 Pa, performing continuous treatment by a combined degassing process integrating separation, film-scraping, lifting and shear; and
step 4, sampling at a sampling port for the detection of degassing degree, finishing the degassing operation if the detection result is eligible, otherwise repeating step (3) until the detection result is eligible. The degassing method provided by the present invention has high degassing efficiency and good degassing effect, and is applicable to spinning solutions of a wide range of viscocity.
More Like This:
Inventors:
Zhoujia Village
Hirotoshi Hu
Hirotoshi Hu
Application Number:
JP2016539407A
Publication Date:
June 21, 2017
Filing Date:
September 01, 2014
Export Citation:
Assignee:
Kaisama Biological Technology Co., Ltd.
International Classes:
D01D1/10; B01D19/00; B01F27/91; D01F9/00
Domestic Patent References:
| JP2013527336A | ||||
| JP56106901A | ||||
| JP56112937A | ||||
| JP60040224A | ||||
| JP6192475A | ||||
| JP10158923A | ||||
| JP58214513A | ||||
| JP58070710A | ||||
| JP8309172A | ||||
| JP9047647A | ||||
| JP2006102608A | ||||
| JP2002045608A |
Foreign References:
| GB2079616A |
Attorney, Agent or Firm:
Hitoshi Shinbo