Processing method of spunlace environment-friendly filter material
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A processing method and filter material technology, applied in separation methods, chemical instruments and methods, filtration separation, etc., can solve problems such as product performance degradation and energy waste
Active Publication Date: 2014-11-19
南京际华三五二一环保科技有限公司
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It can be known that due to one more drying process between spunlace, dehydration and treatment agent impregnation, a lot of energy is wasted, and the product is baked at a high temperature once more, and the product performance will also decrease accordingly
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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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Embodiment 1
[0019] A processing method of spunlace environmental protection filter material is characterized in that the method comprises the following steps:
[0020] 1) Spunlace dehydration process. For the polyphenylene sulfide filter material with a gram weight of 400g / m2 and a pre-needling density of 60 thorns / cm2, use 300bar (positive), 350bar (reverse), 350bar (positive), 400bar (reverse), 300bar (positive) water Spunlace was performed 5 times.
[0021] 2) Process A of online moisture content detection. Control the speed of the vacuum pump through the online detection of water content A2, so that the moisture content of the filter material after the dehydration process is controlled below 50% (moisture / moisture + filter material*100%).
[0022] 3) Dilute the polytetrafluoroethylene emulsion and water at a ratio of 1:4, and add 0.1% penetrant op-10.
[0023] 4) The process of pressing rollers in the glue tank. The pressure roller in the glue tank is controlled at 10N / CM so that ...
Embodiment 2
[0028] 1) For the PTFE filter material with a gram weight of 700g / m2 and a pre-needling density of 120 thorns / cm2, use 300bar (positive), 350bar (reverse), 350bar (positive), 400bar (reverse), 300bar (positive) ) water pressure for positive and negative spunlace 5 times.
[0029] 2) Control the speed of the vacuum pump through the online detection of water content 1, so that the moisture content of the filter material after the dehydration process is controlled below 50% (moisture / moisture + filter material*100%).
[0030] 3) Dilute the polytetrafluoroethylene emulsion and water at a ratio of 1:4, and add 1% penetrant op-10
[0031] 4) The pressure roller in the glue tank, the pressure is controlled at 20N / CM so that the PTFE emulsion can penetrate into the inside of the filter material
[0032] 5) Through the difference between the online monitoring of water content 1 and the online monitoring of water content 2, the amount of glue is controlled to control the pressure of th...
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 processing method of a spunlace environment-friendly filter material. The processing method of the spunlace environment-friendly filter material comprises the following steps of: carrying out front-back spunlace on a filter material with the gram weight of 60-120 needling / cm<2> and pre-needling density of 400-700g / m<2> by adopting water pressure of 300-400 BAR; controlling the speed of a vacuum pump through water content on-line detection 1 so that the moisture percentage of the filter material subjected to a dehydration technology is controlled to less than 50%; adding a pressing roller in a glue groove, and controlling the pressure to be 10N-20N / CM so that teflon emulsion permeates into the filter material; controlling the glue quantity and the pressure of the pressing roller through the difference value of water content on-line detection A and water-content on-line detection B, thereby controlling the dry weight ratio of teflon emulsion to the filter material to achieve (1:9)-(3:7); and drying and sizing, and controlling the product thickness and surface smoothness through hot pressing. According to the processing method of the spunlace environment-friendly filter material, immersion treatment is directly carried out after spunlace, and then drying and sizing are carried out, and the existing process of drying after spunlace is omitted, thus the technology process is shortened, and 50% of drying energy consumption is saved.
Description
technical field [0001] The invention relates to an environment-friendly filter material, in particular to a processing method of a spunlace environment-friendly filter material. Background technique [0002] The filter material is made of glass fiber, non-woven fabric and other materials after processing, and has permeability. Environmental protection filter materials include polyphenylene sulfide series, polytetrafluoroethylene series, polyimide series, etc. In the traditional process, the spunlace environmental protection filter material is soaked and pressed after being dried after spunlace. figure 1 It is a traditional process flow chart. It can be known that: due to one more drying process between spunlace, dehydration and treatment agent impregnation, a lot of energy is wasted, and the product is baked at a high temperature once more, and the product performance will decrease accordingly. Contents of the invention [0003] In order to overcome the problems existin...
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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