Title:
METHOD OF CLASSIFYING LATEX
Document Type and Number:
WIPO Patent Application WO/2021/024757
Kind Code:
A1
Abstract:
[Problem] To provide a method of classifying latex which makes it possible to efficiently classify the fine polymers mixed in latex and prevent coarse polymers mixed in latex from accumulating on the surface of a screen. [Solution] In a classification device used for this classification method, a supply port for supplying latex is formed at a front part of a main body formed to have a cylindrical shape, and a discharge port for discharging latex that has undergone classification to the exterior is formed at a rear part thereof. A plurality of ring-shaped filtrate chambers are formed at predetermined intervals in the front-rear direction at an inner peripheral part of the main body, and a slurry chamber is formed between adjacent filtrate chambers. A screen that has a plurality of openings is mounted onto front/rear parts of the filtrate chambers. A stirring blade supported on a rotating shaft that extends in the front-rear direction is provided to the slurry chambers. The method comprises: a step for pumping latex with a slurry-supplying pump at a first pressure higher than atmospheric pressure and supplying same to the supply port of the classification device; a step for discharging air inside the classification device to the exterior while also filling the slurry chambers with latex that has been supplied to the supply port; and a step for causing fine polymers in the latex filling the slurry chambers to pass through a screen while causing the stirring blade to rotate, and transferring same to the filtrate chambers.
Inventors:
KURITA SHINPEI (JP)
Application Number:
PCT/JP2020/027821
Publication Date:
February 11, 2021
Filing Date:
July 17, 2020
Export Citation:
Assignee:
TSUKISHIMA KIKAI CO (JP)
International Classes:
B03B5/00; B07B1/00; B07B1/04; B07B1/46; C08J3/02
Foreign References:
| JP2003245527A | 2003-09-02 | |||
| JPH10128083A | 1998-05-19 | |||
| JPS6026005A | 1985-02-08 | |||
| JPH11292922A | 1999-10-26 | |||
| JPS51139577A | 1976-12-01 |
Attorney, Agent or Firm:
NAGAI INTERNATIONAL PATENT BUREAU (JP)
Download PDF: