CN100489174C - Production process of polytetrafluoroethylene fiber acupuncture filtering felt - Google Patents
Production process of polytetrafluoroethylene fiber acupuncture filtering felt Download PDFInfo
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- CN100489174C CN100489174C CNB2005100455629A CN200510045562A CN100489174C CN 100489174 C CN100489174 C CN 100489174C CN B2005100455629 A CNB2005100455629 A CN B2005100455629A CN 200510045562 A CN200510045562 A CN 200510045562A CN 100489174 C CN100489174 C CN 100489174C
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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
The present invention relates to the production technology field of filtering material, specifically be meant a kind of manufacture craft of needled filtering felt of polytef fibre.
Background technology
At present, the organic chemistry fiber that is used to make filtering material comprises polypropylene fibre, acrylonitrile homopolymer fiber, polyester fiber, polyphenylene sulfide fibre, P84 fiber, polytetrafluoroethylene fibre etc., and inorganic chemical fiber comprises glass fibre, ceramic fibre, basalt fibre, stainless steel fibre etc.Wherein, polytetrafluoroethylene fibre is that up to the present the PTFE fiber is the best fiber of chemical proofing that the whole world can find, and it extract from " fluorine " stone, and China is " fluorine " the biggest in the world raw material production ground; Its fiber fusing point 3270C, moment heatproof can reach 3000C; Has good low friction, difficult to burn and good insulation performance and thermal insulation; The oxide etch that can bear various strong oxides reaches the problem that hydrolysis can not take place; Have good filter efficiency and good deashing property, even under the bigger situation of temperature, the surface also only adheres to a spot of dust; Under the equal working condition, will improve more than 1 to 3 times the service life of its filtrate than the filtrate of other material; Has very high cost performance.Therefore, polytetrafluoroethylene fibre is with a wide range of applications as the raw material of making filtering material.
China is in the eighties before mid-term, sack cleaner mostly is woven with filtrate, also has plenty of knitting and three-dimensional weave, this class filtrate is that filling yarn, the monofilament with doubling twisting is interwoven with loom, the density of filtrate is relatively large, compare with non-weaving cloth have intensity and ABRASION RESISTANCE better, the abrasion that can bear bigger pressure and dust, dimensionally stable, smooth surface are beneficial to deashing, the density of fabric can be controlled more accurately, its shortcoming is that filtration resistance is big, and filtering accuracy will could improve after forming the dirt frame.
And needled filtering felt is a kind of of non-weaving cloth, and the manufacturing technology of a lot of non-weaving cloths can be used for producing filtering material, but the filtrate that the filtrate that uses on sack cleaner is produced based on needle point method.As everyone knows, the production of needle-punched non-woven is short process production technology, and needled filtering felt has characteristics such as porosity height, filtering accuracy height, resistance are little, and the environmental protection dedusting and the material that have been widely used in every field reclaim.Existing needling process comprises fiber opening, combing, lapping, pre-needling, main acupuncture, post-treating and other steps substantially, still, at different fibrous materials, must select different technological parameters for use, and step is also corresponding different.
In sum, polytetrafluoroethylene fibre and needled filtering felt have good performance in field of air filtration, and do not find to adopt 100% polytetrafluoroethylene fibre at present as yet is that raw material is made needled filtering felt, and it is the technology that raw material is produced needled filtering felt with 100% polytetrafluoroethylene fibre that the present invention aims to provide a kind of.
Summary of the invention
It is the manufacture craft that raw material is produced needled filtering felt with 100% polytetrafluoroethylene fibre that main purpose of the present invention is to provide a kind of.
The present invention adopts following technical scheme:
A kind of manufacture craft of needled filtering felt of polytef fibre, may further comprise the steps: 1) evenly be sprayed onto antistatic additive in the polytetrafluoroethylene fibre, again polytetrafluoroethylene fibre is carried out sufficient shredding, then it is placed into and carries out the balance placement in the stainless steel drum, and make the abundant ground connection discharge of stainless steel drum; 2) with carding machine and the abundant ground connection discharge of lapping machine; 3) fiber is fed carding machine, the fiber that combing is neat carries out lapping by the lapping machine, forms fleece, and the grammes per square metre of control individual layer fleece is at 200-400g/m
24) lay the polytetrafluoroethylene (PTFE) base cloth under the individual layer fleece, then base cloth and individual layer fleece are together introduced needing machine and carry out acupuncture formin felt, depth of needling is controlled at 6-12mm, and needling density is controlled at 100-300 pin/cm
2, fibre web drawing-off ratio is controlled at 5-15%; 5) use framing shaping machine that the plain felt that acupuncture forms is carried out HEAT SETTING, then to its processing of singing.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, its acupuncture course comprise pre-needling and main acupuncture, earlier base cloth and individual layer fleece are carried out pre-needling, make both preliminary combinations, and then carry out main acupuncture formin felt.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, its processing site is airtight, and temperature is controlled at 15-30 ℃, and relative humidity is controlled at 60-90%.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, the fineness of the polytetrafluoroethylene fibre that is adopted are 1D-10D, and length is 38-76mm.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, the antistatic additive that is adopted are that mass ratio is ion-type or the non-ionic antistatic agent of 3-8%, and the balance standing time of polytetrafluoroethylene fibre in the stainless steel drum is 8-48 hour.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, adopt when carding machine and lapping machine ground connection that one of flat copper rope is connected on the ground connection copper rod, a mode that is connected on carding machine and the lapping machine, the about 1-3cm of the width of flat copper rope, copper rod diameter 10-40mm, copper rod is imbedded underground 50-200cm.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, the weight per square meter of the polytetrafluoroethylene fibre of its feeding carding machine is controlled at 2-5kg/m
2, feeding speed is controlled at 0.5-1m/min.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, the fleece number of plies was the 2-6 layer when its lapping machine carried out lapping.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, the temperature of its HEAT SETTING are controlled at 220-300 ℃, and the time of HEAT SETTING is 3-10min.
The manufacture craft of aforementioned needled filtering felt of polytef fibre, it is singed and adopts liquefied gas when handling is fuel, and control liquefied gas and Air mixing ratio are 1:20, and the speed of singing is controlled at 5-25m/min.
The manufacture craft of needled filtering felt of polytef fibre provided by the present invention, be result through applicant's test of many times summary for a long time, by this manufacture craft, can produce the needled filtering felt that contains 100% polytetrafluoroethylene fibre, the filter felt of producing has high temperature resistant, good low friction, difficult to burn and good insulation performance and thermal insulation, can bear the oxide etch of various strong oxides, have good filter efficiency and good deashing property, will improve more than 1 to 3 times service life than the filtrate of other material; And this technological process is simple, be easier to realize.
The specific embodiment
Specific embodiment of the utility model one, mainly providing a kind of is the technology that raw material is made needled filtering felt with 100% polytetrafluoroethylene fibre.Describe the step of this technology and the control of various ambient parameters below in detail.
At first, be that selection, raw material are prepared and antistatic treatment.Selecting fineness for use is 1D-10D, length is the polytetrafluoroethylene fibre of 38-76mm, with mass ratio is that ion-type or the non-ionic antistatic agent of 3-8% evenly is sprayed onto in the polytetrafluoroethylene fibre, again polytetrafluoroethylene fibre is carried out sufficient shredding, then it is placed into and carries out the balance placement in the stainless steel drum, balance standing time is 8-48 hour, and makes the abundant ground connection discharge of stainless steel drum; With carding machine and the abundant ground connection discharge of lapping machine, adopt during ground connection that one of flat copper rope is connected on the ground connection copper rod, a mode that is connected on carding machine and the lapping machine, the about 1-3cm of the width of flat copper rope, copper rod diameter 10-40mm, copper rod is imbedded underground 50-200cm.
Next is the constant temperature and humidity processing of processing site.The processing site should be airtight, prevents that flow air from influencing the motion of fleece, should adorn air-conditioning in the workshop, and temperature is controlled at 15-30 ℃, and preferably about 25 ℃, relative humidity is controlled at 60-90%, and preferably about 80%.
The 3rd is that fiber is carried out combing and lapping.With ready polytetrafluoroethylene fibre feeding carding machine, the weight per square meter of the polytetrafluoroethylene fibre of feeding carding machine is controlled at 2-5kg/m
2, feeding speed is controlled at 0.5-1m/min, and the fiber that combing is neat carries out lapping by the lapping machine, forms fleece, and the grammes per square metre of control individual layer is at 200-400g/m
2, the fleece number of plies was the 2-6 layer when lapping machine carried out lapping.
The 4th is that fleece and base cloth are carried out acupuncture formin felt.Lay 100% polytetrafluoroethylene (PTFE) base cloth under the individual layer fleece, then base cloth and individual layer fleece are together introduced needing machine and carry out acupuncture formin felt, depth of needling is controlled at 6-12mm, and needling density is controlled at 100-300 pin/cm
2, fibre web drawing-off ratio is controlled at 5-15%, and acupuncture course comprises pre-needling and main acupuncture, earlier base cloth and individual layer fleece is carried out pre-needling, makes both preliminary combinations, and then carries out main acupuncture formin felt.
The 5th is that plain felt is carried out HEAT SETTING and post processing such as singe.Use framing shaping machine that the plain felt that acupuncture forms is carried out HEAT SETTING, the temperature of HEAT SETTING is controlled at 220-300 ℃, and the time of HEAT SETTING is 3-10min; Singing and adopting liquefied gas when handling is fuel, and control liquefied gas and Air mixing ratio are 1:20, and the speed of singing is controlled at 5-25m/min and all can.
Above-mentioned various parameter can be selected according to physical condition and needs in specified scope.
Above-mentioned only is a specific embodiment of the present invention, but design concept of the present invention is not limited thereto, and allly utilizes this design that the present invention is carried out the change of unsubstantiality, all should belong to the behavior of invading protection domain of the present invention.
Claims (10)
1, a kind of manufacture craft of needled filtering felt of polytef fibre may further comprise the steps:
1) antistatic additive evenly is sprayed onto in the polytetrafluoroethylene fibre, again polytetrafluoroethylene fibre is carried out sufficient shredding, it is placed into carries out the balance placement in the stainless steel drum then, and make the abundant ground connection discharge of stainless steel drum;
2) with carding machine and the abundant ground connection discharge of lapping machine;
3) fiber is fed carding machine, the fiber that combing is neat carries out lapping by the lapping machine, forms fleece, and the grammes per square metre of control individual layer fleece is at 200-400g/m
2
4) lay the polytetrafluoroethylene (PTFE) base cloth under the individual layer fleece, then base cloth and individual layer fleece are together introduced needing machine and carry out acupuncture formin felt, depth of needling is controlled at 6-12mm, and needling density is controlled at 100-300 pin/cm
2, fibre web drawing-off ratio is controlled at 5-15%;
5) use framing shaping machine that the plain felt that acupuncture forms is carried out HEAT SETTING, then to its processing of singing.
2, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1, it is characterized in that: acupuncture course comprises pre-needling and main acupuncture, earlier base cloth and individual layer fleece are carried out pre-needling, make both preliminary combinations, and then carry out main acupuncture formin felt.
3, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1 is characterized in that: its processing site is airtight, and temperature is controlled at 15-30 ℃, and relative humidity is controlled at 60-90%.
4, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1 is characterized in that: the fineness of the polytetrafluoroethylene fibre that is adopted is 1D-10D, and length is 38-76mm.
5, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1, it is characterized in that: the antistatic additive that is adopted is that mass ratio is ion-type or the non-ionic antistatic agent of 3-8%, and the balance standing time of polytetrafluoroethylene fibre in the stainless steel drum is 8-48 hour.
6, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1, it is characterized in that: adopt when carding machine and lapping machine ground connection that one of flat copper rope is connected on the ground connection copper rod, a mode that is connected on carding machine and the lapping machine, the about 1-3cm of the width of flat copper rope, copper rod diameter 10-40mm, copper rod is imbedded underground 50-200cm.
7, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1 is characterized in that: the weight per square meter of the polytetrafluoroethylene fibre of feeding carding machine is controlled at 2-5kg/m
2, feeding speed is controlled at 0.5-1m/min.
8, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1 is characterized in that: the fleece number of plies was the 2-6 layer when lapping machine carried out lapping.
9, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1 is characterized in that: the temperature of HEAT SETTING is controlled at 220-300 ℃, and the time of HEAT SETTING is 3-10min.
10, the manufacture craft of a kind of needled filtering felt of polytef fibre as claimed in claim 1, it is characterized in that: singing and adopting liquefied gas when handling is fuel, control liquefied gas and Air mixing ratio are 1: 20, and the speed of singing is controlled at 5-25m/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100455629A CN100489174C (en) | 2005-12-16 | 2005-12-16 | Production process of polytetrafluoroethylene fiber acupuncture filtering felt |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2005100455629A CN100489174C (en) | 2005-12-16 | 2005-12-16 | Production process of polytetrafluoroethylene fiber acupuncture filtering felt |
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| CN1982523A CN1982523A (en) | 2007-06-20 |
| CN100489174C true CN100489174C (en) | 2009-05-20 |
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Cited By (1)
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| CN110064249A (en) * | 2019-04-30 | 2019-07-30 | 浙江华基环保科技有限公司 | A kind of processing method of pure polytetrafluoroethylene (PTFE) filter cloth |
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| US8099840B2 (en) * | 2008-03-03 | 2012-01-24 | Oerlikon Textile Gmbh & Co. Kg | Device for needling a web of fiber |
| CN101716442A (en) * | 2008-10-10 | 2010-06-02 | 东丽纤维研究所（中国）有限公司 | Industrial filtering cloth used for liquid filter and application |
| CN101805958B (en) * | 2009-02-13 | 2012-04-18 | 常州市东新华福氟塑材料有限公司 | Polytetrafluoroethylene punched felt and manufacturing method thereof |
| CN102540793B (en) * | 2010-12-07 | 2014-09-24 | 厦门三维丝环保股份有限公司 | Needled felt special for selenium drum |
| CN102166455B (en) * | 2011-03-11 | 2014-01-29 | 厦门美达斯环保工业有限公司 | High-temperature resisting stiffened needled felt filter material and manufacturing method and application thereof |
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| CN104606955A (en) * | 2014-12-30 | 2015-05-13 | 东华大学 | Method for preparing polytetrafluoroethylene/polypropylene composite needle punched filter felt |
| US10315141B2 (en) * | 2015-10-29 | 2019-06-11 | Parker Hannifin Filtration (Us), Inc. | Thermally bonded multi-layer felt filtration media |
| CN109260828A (en) * | 2018-09-04 | 2019-01-25 | 江苏明晶布业股份有限公司 | A kind of technique that PTFE superfine fibre Nomex eliminates electrostatic |
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| CN110947242A (en) * | 2019-12-26 | 2020-04-03 | 江苏奥凯环境技术有限公司 | Production process of polytetrafluoroethylene composite needled felt |
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| CN114108178B (en) * | 2021-12-07 | 2023-01-24 | 上海澜森过滤材料科技有限公司 | PTFE filter felt production process based on decrement method |
| CN114191886B (en) * | 2021-12-14 | 2023-04-07 | 厦门保瑞达环保科技有限公司 | High-flux filter cloth and manufacturing method and application thereof |
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- 2005-12-16 CN CNB2005100455629A patent/CN100489174C/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110064249A (en) * | 2019-04-30 | 2019-07-30 | 浙江华基环保科技有限公司 | A kind of processing method of pure polytetrafluoroethylene (PTFE) filter cloth |
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| CN1982523A (en) | 2007-06-20 |
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Address after: No. 5, Xiang Ming Road, industrial zone, torch hi tech Zone, Xiamen, Fujian, Xiangan Patentee after: Xiamen Savings Environmental Co., Ltd. Address before: North Industrial Zone Jimei District of Xiamen City, Fujian Province, Xinglin apricot Patentee before: Xiamen Savings Environmental Co., Ltd. |
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Assignee: Tianjin Sanwei Environmental Protection Technology Co., Ltd. Assignor: Xiamen Savings Environmental Co., Ltd. Contract record no.: 2012990000426 Denomination of invention: Production of needled filtering felt of polytef fibre Granted publication date: 20090520 License type: Exclusive License Open date: 20070620 Record date: 20120615 |
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Effective date of registration: 20170112 Address after: 361000 Xiamen torch high tech Zone (Xiangan) Industrial Zone, Xiang Ming Road, No. 4, building 5, No. Patentee after: Xiamen Bairui Environmental Protection Technology Co., Ltd. Address before: 361101 Xiamen Province torch high tech Zone (Xiangan) Industrial Zone Xiang Ming Road, No. 5 Patentee before: Xiamen Savings Environmental Co., Ltd. |