Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SELF-CLEANING FILTER CLOTH AND PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2022/048219
Kind Code:
A1
Abstract:
The present invention relates to the field of industrial filter cloth, and particularly relates to a self-cleaning filter cloth and a preparation method. Z-twist polyamide fiber soaked with sodium bicarbonate and S-twist composite fiber coated with a polytetrafluoroethylene emulsion containing alum are stranded according to Z twist, and gas is generated in the process of obtaining a plied yarn, so that good micropores are kept in the plied yarn, and micropores exist in a polytetrafluoroethylene film; the plied yarns are woven into gray fabric having a warp density of 120 warps per centimeter and a weft density of 90 wefts per centimeter according to plain weaving; hot-pressing shaping is performed on the obtained gray fabric by a press roller having uniformly distributed array recesses at 140-160°C to obtain the self-cleaning filter cloth having protrusions distributed on the surface. The filter cloth obtained in the present invention is not prone to adhere fine particles and has good self-cleaning property, thereby effectively solving the problem of blockage of micropores of filter cloth.

Inventors:
LIN RENWEN (CN)
Application Number:
PCT/CN2021/098398
Publication Date:
March 10, 2022
Filing Date:
June 04, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHEJIANG TIANTAI TIANFENG FILTER MAT CO LTD (CN)
International Classes:
B01D39/08; D02G3/04; D03D13/00; D03D15/00
Foreign References:
CN112023525A2020-12-04
CN109849463A2019-06-07
CN1895757A2007-01-17
CN102787416A2012-11-21
CN103806165A2014-05-21
US4025679A1977-05-24
EP0962243A11999-12-08
Attorney, Agent or Firm:
LANTIAN INTELLECTUAL PROPERTY AGENCY (CN)
Download PDF: