Composite needled filter felt

A filter felt and compound needle technology, applied in the fields of filtration and separation, synthetic resin layered products, layered products, etc., can solve the problems of unsuitable industrial and mining conditions, low temperature resistance, shortened service life, etc., to reduce the risk of chemical corrosion , The effect of high breaking strength in warp and weft direction and good air permeability

Inactive Publication Date: 2011-02-23
靳双林
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are roughly three types of needle-punched felt filter bags used in the ceramic industry: the first one is a needle-punched filter cloth product made of acrylic fiber imported from Japan. Its scientific name is homopolyacrylonitrile, and it can only be produced in Japan. The price is extremely expensive, the ceramic industry itself is a low value-added industry, and the fiber products that the filter bag relies on imports have increased the burden on the enterprise, the production cost has increased, and the survival of the enterprise is in crisis; the second product is polypropylene needle felt. The high temperature resistance (temperature resistance is only 90°) results in a greatly shortened service life in the industrial and mining of the ceramic industry, which is n

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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  • Composite needled filter felt
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Examples

Experimental program
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Embodiment Construction

[0011] refer to Figure 1-2 , the specific embodiment adopts the following technical scheme: it is composed of glass fiber base cloth layer 1, polyester and polypropylene fiber composite layer 2 and PTFE impregnated coating layer 3, and the outer layer of glass fiber base cloth layer 1 is provided with polyester and polypropylene fiber Composite layer 2, polyester and polypropylene fiber composite layer 2 is covered with PTFE impregnated coating layer 3; its process route is: polyester, polypropylene fiber --> opening --> carding --> netting --> glass fiber Base fabric—>polyester, polypropylene fiber—>opening—>carding—>netting—>pre-needling—>main needling—>singeing—>calendering—>impregnation— —> finished product.

[0012] The impregnation is treated by PTFE impregnation method. The polyester and polypropylene fibers are fully mixed and the glass fiber is used as the base cloth, and then the glass fiber base cloth, polyester, and polypropylene fiber surface layer are completel...

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 composite needled filter felt, and relates to a filtering material for a ceramic industry. The filter felt consists of a glass fiber base cloth layer (1), a polyester fiber and polypropylene fiber composite layer (2) and a polytetrafluoroethylene-impregnated (PTFE) coating layer (3), wherein the polyester fiber and polypropylene fiber composite layer (2) is arranged on the outer layer of the glass fiber base cloth layer (1) and covered by the PTFE-impregnated coating layer (3); and the process flow of the filter felt comprises the following steps of: preparing polyester fiber and polypropylene fiber, opening, carding and netting; preparing glass fiber base cloth; opening, carding and netting; pre-needling; primarily needling; singeing; calendering; and impregnating to obtain the finished product. The filter felt has the advantages of high temperature resistance, high ventilation, high break strength in warp and weft directions, low elongation and long service life.

Description

Technical field: [0001] The invention relates to a filter material used in the ceramic industry, in particular to a composite needle-punched filter felt. Background technique: [0002] At present, a large number of bag-type dust removal technologies are being developed and applied in China. In terms of needle-punched filter materials, they are developing in the direction of various materials and various processing spinning machines. There are roughly three types of needle-punched felt filter bags used in the ceramic industry: the first one is a needle-punched filter cloth product made of acrylic fiber imported from Japan. Its scientific name is homopolyacrylonitrile, and it can only be produced in Japan. The price is extremely expensive, the ceramic industry itself is a low value-added industry, and the fiber products that the filter bag relies on imports have increased the burden on the enterprise, the production cost has increased, and the survival of the enterprise is in ...

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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IPC IPC(8): B32B17/10B01D39/14B32B27/02B32B27/32B32B17/12B32B17/02
Inventor 靳双林
Owner 靳双林
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