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Production process for polytetrafluoroethylene (PTFE) aqua tex composite high-temperature tail gas filter material

A technology of exhaust gas filtration and production process, which is applied in the fields of filtration and separation, synthetic resin layered products, needle punching machines, etc., can solve the problems of inability to meet the requirements of environmental protection standards, inability to compete with filter bags, etc., to improve the entanglement effect and pore size distribution. Good control and strong chemical resistance

Inactive Publication Date: 2012-07-04
ZHEJIANG HEZHONG NONWOVEN
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  • Description
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AI Technical Summary

Problems solved by technology

However, my country's domestic filter bags are almost all middle and low-end products, not only unable to compete with international advanced filter bags, but also unable to meet the requirements of environmental protection standards in different working conditions.

Method used

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Embodiment Construction

[0029] The production process of the PTFE spunlace composite high-temperature exhaust gas filter material of the present invention adopts polytetrafluoroethylene fiber and glass fiber base cloth as raw materials; first, the polytetrafluoroethylene fiber is inspected, weighed and fed, and then fed into the long curtain, Horizontal opening machine, large bin cotton mixing box, fine opening machine, and then layered carding by carding machine 1 and carding machine 2, and then respectively enter into cross-lapper 1 and cross-lapper 2 for laminating , and then the glass fiber base cloth is interposed between the raw materials conveyed by the first cross-lapper and the second cross-lapper and laminated, and then enters the pre-wet process, spunlace process, dehydration process, and drying process in sequence. process, coiling process.

[0030] Among them, carding machine one, the main cylinder work roll is 110m / min, the main cylinder stripping roll is 150m / min, the main cylinder spe...

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Abstract

The invention relates to a production process for a polytetrafluoroethylene (PTFE) aqua tex composite high-temperature tail gas filter material, which belongs to the technical field of spinning filter materials. Polytetrafluoroethylene fibers and glass fiber base fabrics are adopted as raw materials. Firstly, the polytetrafluoroethylene fibers are detected and weighted, then sequentially fed into a long curtain, a horizontal opener, a large-cabinet and a fine opener, combed by a combing machine 1 and a combing machine 2 in layering mode, and respectively fed into a cross lapping machine 1 and a cross lapping machine 2 to be lapped. The glass fiber base fabrics are laminated between the raw materials sent out of the cross lapping machine 1 and the cross lapping machine 2 to be coincided and then sequentially is processed by a prewetting process, an aqua tex process, a dewatering process, a drying process and a coiling process. The PTFE aqua tex composite high-temperature tail gas filter material is strong in mechanical performance, filter performance, high temperature resistance and chemical corrosion resistance and stable in size.

Description

technical field [0001] The invention relates to a production process of a PTFE spunlace composite high-temperature tail gas filter material, which belongs to the technical field of textile filter materials. Background technique [0002] Environmental problems have become one of the bottlenecks of my country's economic development. The discharge of environmental pollutants accompanying economic development has exceeded the carrying capacity of the environment. Environmental problems accumulated over a long period of time have not yet been well resolved. The ecological environment is facing huge challenges, and environmental protection has become a restrictive factor for my country's social and economic development. The filter bag is the core unit of bag dust removal environmental protection equipment. Moreover, the filter bag is a vulnerable part and needs to be replaced every 2 to 3 years. Therefore, the market potential of the filter bag is huge, especially in the aspect o...

Claims

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Application Information

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IPC IPC(8): B01D39/14D04H1/4291D04H18/04B32B17/02B32B17/10B32B27/02B32B27/30
Inventor 洪桂焕徐寿明韩旭
Owner ZHEJIANG HEZHONG NONWOVEN
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