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Production of needled filtering felt of polytef fibre

A technology of polytetrafluoroethylene and production process, which is applied in the direction of filtration and separation, textiles and papermaking, non-woven fabrics, etc., can solve the problems of no needle-punched filter felt, achieve good filtration efficiency, be easy to implement, and increase service life Effect

Active Publication Date: 2007-06-20
厦门佰瑞福环保科技有限公司
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, polytetrafluoroethylene fibers and needle-punched filter felts have good performance in the field of air filtration, but it has not been found that 100% polytetrafluoroethylene fibers are used to make needle-punched filter felts as raw materials. The present invention aims to provide a A process for producing needle-punched filter felt with 100% polytetrafluoroethylene fiber as raw material

Method used

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Experimental program
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Embodiment Construction

[0019] The first embodiment of the utility model mainly provides a process for making needle-punched filter felt with 100% polytetrafluoroethylene fiber as raw material. The steps of the process and the control of various environmental parameters will be described in detail below.

[0020] First of all, it is material selection, raw material preparation and antistatic treatment. Select polytetrafluoroethylene fibers with a fineness of 1D-10D and a length of 38-76mm, and spray an ionic or non-ionic antistatic agent with a mass ratio of 3-8% evenly into the polytetrafluoroethylene fibers. The polytetrafluoroethylene fibers are fully opened, and then placed in a stainless steel drum for balanced placement. The balanced placement time is 8-48 hours, and the stainless steel drum is fully grounded and discharged; Grounding discharge. When grounding, use a flat copper wire rope connected to the grounding copper rod at one end, and connected to the carding machine and the laying mach...

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Abstract

Production technology of a kind of teflon fiber needled filter carpet, its main steps include : 1) use antistatic agent to eliminate the static teflon fiber, fully-open, then balanced place into stainless steel drums and make stainless steel drums fully grounding discharge; 2) the carding machine and roll machine fully grounding discharge; 3) the fibers are fed to carding machine, then the regular fiber are laid through network machine, and form hair nets; 4) lay teflon basal cloth bottom of single layer hair net, then basal cloth and single layer hair nets together introduce into needle machine forming carpet; 5) use forming machines to form the carpet by heat, and then deal it with singeing. With the process, can produce 100% teflon fiber needled filter carpet, such acupuncture filter carpet has good chemical properties, good filtration efficiency, good cleaning performance and longer service life.

Description

technical field [0001] The invention relates to the field of production technology of filter materials, in particular to a production technology of polytetrafluoroethylene fiber needle-punched filter felt. Background technique [0002] At present, organic chemical fibers used to manufacture filter materials include polypropylene fibers, acrylonitrile homopolymer fibers, polyester fibers, polyphenylene sulfide fibers, P84 fibers, polytetrafluoroethylene fibers, etc., and inorganic chemical fibers include glass fibers, Ceramic fiber, basalt fiber, stainless steel fiber, etc. Among them, polytetrafluoroethylene fiber or PTFE fiber is the fiber with the best chemical resistance that can be found in the world so far. It is extracted from "fluorine" stone, and my country is the world's largest producer of "fluorine" raw materials ;The melting point of its fiber is 3270C, and its instantaneous temperature resistance can reach 3000C; it has good low friction, non-combustibility and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/46B01D39/04
Inventor 罗章生罗祥波丘国强
Owner 厦门佰瑞福环保科技有限公司
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