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High-air permeability woven fabric laminated filtering material and preparation method thereof as well as laminating device

A technology of film-coated filter material and woven fabric, which is applied in the field of high-air-permeability woven fabric-coated filter material, which can solve the problem of affecting the air volume and service life of film-coated filter material, affecting the service life of filter bags and membrane strength , reduced air permeability and other issues, to achieve the effect of simple structure, easy control and long service life

Active Publication Date: 2015-04-22
NANJING FIBERGLASS RES & DESIGN INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings the following problems: Whether it is adhesive coating or high-temperature hot-pressing coating, the PTFE microporous membrane is almost completely bonded to the plane of the woven fabric substrate, and the entire membrane surface of the PTFE microporous membrane is subjected to high temperature and pressure. The damage of the film will reduce the strength and air permeability of the membrane; if the base material is a chemical fiber woven fabric, it may also block the PTFE micropores due to melting chemical fibers or rolling adhesive points, resulting in a decrease in air permeability; similarly, the base material It is also hot-pressed very densely, which affects the processing air volume and service life of the film-coated filter material
Especially when the ambient temperature is low and the folds are too heavy, film cracks will appear on the membrane surface or creases of the film-coated filter material, which seriously affects the filtration efficiency and the service life of the filter bag.

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
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  • High-air permeability woven fabric laminated filtering material and preparation method thereof as well as laminating device
  • High-air permeability woven fabric laminated filtering material and preparation method thereof as well as laminating device
  • High-air permeability woven fabric laminated filtering material and preparation method thereof as well as laminating device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The base material of the woven fabric is a glass fiber woven fabric, and the warp and weft yarns are all made of network yarns. Density 550g / m 2, fabric structure: four pieces of satin (Crowfoot satin), substrate plane tension 2.6kg;

[0032] Such as figure 2 , 3 The network yarn nozzle and process parameters used for the network yarn shown are: the inner diameter of the lower semi-circular tube of the network yarn nozzle is 6mm, the inner diameter of the upper arc tube is 10mm, the central angle of the upper arc tube is 120°, the length of the silk channel tube is 45mm, the inner diameter of the air intake tube 3.5, air pressure 6kg, overfeed rate 20%, humidity 60%.

[0033] The chemical treatment liquid used for the chemical surface treatment of the woven fabric substrate before coating includes: γ-aminopropyltriethoxysilane (Nanjing Liansi Chemical Co., Ltd.) 0.5%, polytetrafluoroethylene emulsion (concentrated dispersion for textile Liquid, solid content 60%; Z...

Embodiment 2

[0041] Glass fiber woven fabric, the warp and weft yarns are all made of network yarn, the weft yarn count is twice the warp yarn count, so it presents a convex structure, the total thickness of the woven fabric is 0.8±0.05mm, and the surface density is 750g / m 2 Fabric structure: four pieces of satin, substrate plane tension 3kg;

[0042] The used nozzle of the network yarn of the present invention and process parameter are: the inner diameter of the lower semi-circular tube of the network yarn nozzle is 6mm, the inner diameter of the upper arc tube is 10mm, the central angle of the upper arc tube is 120 °, the length of the silk channel tube is 45mm, and the inner diameter of the air intake tube is 3.5mm, air pressure 6kg, overfeed rate 20%, humidity 60%.

[0043] The chemical treatment liquid used for the chemical surface treatment of the woven fabric substrate before coating includes: γ-aminopropyltriethoxysilane (Nanjing Liansi Chemical Co., Ltd.) 0.5%, polytetrafluoroethy...

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
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Abstract

The invention discloses a film-coated filter material of woven cloth with high air permeability, a preparation method thereof and a film-coating device used therein. High-air-permeable woven fabric-coated filter material, including woven fabric substrate and PTFE microporous membrane, with bumps on the woven fabric substrate, and PTFE microporous membrane compounded on the bumps; the woven fabric substrate The plane tension is greater than that of the PTFE microporous membrane. The preparation method of the high-air-permeability woven fabric-coated filter material comprises the following steps: protruding the surface of the woven fabric base material, and compounding the protruding surface with PTFE microporous membrane gaps under high-temperature heat and pressure. The invention effectively solves the problems of low air permeability, serious membrane damage and short service life of the existing film-coated filter material; the present invention has high air permeability woven fabric film-coated filter material with high air permeability, large air volume for processing and long service life , has high bending resistance; the preparation method of the invention is simple, and greatly reduces the damage to the film; the film coating device of the invention is simple in structure, convenient to use and easy to control.

Description

technical field [0001] The invention relates to a film-coated filter material of woven cloth with high air permeability, a preparation method thereof and a film-coating device used therein. Background technique [0002] In the atmospheric dust removal industry, the film-coated filter material is widely used due to its surface filtration characteristics of high filtration efficiency, low running resistance, easy and less cleaning times, large air volume and long service life. There are two kinds of film-covering processes for film-coated filter materials: one is the binder method, and the other is the high-temperature hot-pressing method. The former is gradually eliminated due to the poor temperature resistance of the binder and the aging of the binder, while the latter is a widely used process. The core equipment of the hot press laminating machine used in the high temperature hot pressing method consists of a high temperature hot roller and a high temperature resistant rub...

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
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D39/14B32B37/06B32B37/10D03D15/00D06C15/02D06M15/256D06M15/263D06M13/513D06M15/643D03D15/242D03D15/267D03D15/283D03D15/40
Inventor 宋尚军范凌云赵东波黄箭玲费传军董浩宇周群郭晓蓓吴涛朱平黎鹏杨振东白耀宗
Owner NANJING FIBERGLASS RES & DESIGN INST CO LTD