Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Temperature stage type calendaring film forming method of nonwoven filter cloth

A film-forming method and non-woven fabric technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve the problems of poor film-forming smoothness, poor regeneration effect, and low filtration precision, and achieve high wear resistance coefficient, Fast filtering speed and good finish

Inactive Publication Date: 2013-12-25
LIAONING XUANYUAN FILTRATION TECH
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the temperature for calendering treatment of non-woven fabrics used in non-woven filter cloths is the softening point temperature of the fibers on the surface of the non-woven fabrics. There are problems such as poor and unstable film-forming smoothness and low wear resistance coefficient, which directly lead to filter cake Difficult to peel off, low filtration accuracy, short service life and poor regeneration effect, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature stage type calendaring film forming method of nonwoven filter cloth
  • Temperature stage type calendaring film forming method of nonwoven filter cloth
  • Temperature stage type calendaring film forming method of nonwoven filter cloth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0020] The surface fibers of the non-woven filter cloth are polypropylene fibers, the melting point T1 is 170°C and the softening point T3 is 130°C as measured by the melting point instrument (DSC).

[0021] Follow the steps below in turn:

[0022] a. Carry out the first calendering treatment with the melting point temperature T1=170°C of the fibers on the surface of the non-woven fabric as the temperature of the calendering roll;

[0023] b. Carry out the second calendering treatment with the transition point temperature T2=150°C as the calender roll temperature;

[0024] c. Carry out the third calendering treatment with the softening point temperature T3=130°C of the fibers on the surface of the non-woven fabric as the calender roll temperature.

[0025] The pressure and speed of the three calendering treatments are in accordance with the conventional requirements.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
softening pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a temperature stage type calendaring film forming method of a nonwoven filter cloth. The method has the beneficial effects of stable finish of a formed film, high wearing coefficient, good regeneration effect and high filter precision. The method comprises the following steps in sequence: carrying out first calendaring treatment, with the melting temperature T1 of surface fibers of a non-woven as the temperature of calendaring rolls; carrying out second calendaring treatment, with the transition point temperature T2 as the temperature of the calendaring rolls; carrying out third calendaring treatment, with the softening point temperature T3 of the surface fibers of the non-woven as the temperature of the calendaring rolls, wherein the transition point temperature T2 is equal to (T1+T3) / 2+ / -5 DEG C.

Description

technical field [0001] The invention relates to a calendering film-forming method of non-woven filter cloth, in particular to a non-woven filter cloth temperature-step calendering film-forming method with stable film-forming smoothness, high wear resistance coefficient, good regeneration effect and high filtration precision . Background technique [0002] Non-woven filter cloth (also known as non-woven filter cloth, needle-punched felt filter cloth) uses non-woven fabric as the filter layer to achieve solid-liquid separation. The surface of the filter cake continues to trap particles, and finally realizes solid-liquid separation. Since the non-woven filter cloth is composed of non-woven fabric and base cloth by acupuncture method, the surface is uneven. In order to improve the surface smoothness of the non-woven fabric, it is necessary to go through calendering to form a film during the processing of the non-woven filter cloth. Processing means that the non-woven fabric pa...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D06C15/00B01D39/08
Inventor 杨玉刚
Owner LIAONING XUANYUAN FILTRATION TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com