CN101956296A - Aramid spunlaced non-woven fabric filter material and manufacturing method thereof - Google Patents
Aramid spunlaced non-woven fabric filter material and manufacturing method thereof Download PDFInfo
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- CN101956296A CN101956296A CN2010102576173A CN201010257617A CN101956296A CN 101956296 A CN101956296 A CN 101956296A CN 2010102576173 A CN2010102576173 A CN 2010102576173A CN 201010257617 A CN201010257617 A CN 201010257617A CN 101956296 A CN101956296 A CN 101956296A
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Abstract
The invention discloses an aramid spunlaced non-woven fabric filter material and a manufacturing method thereof. In the manufacturing method of spunlace, aramid fiber is taken as a raw material, after fine opening is carried out on the aramid fiber, static-removing treatment is carried out on the aramid fiber by an oil spray system, multiple paths of spunlace are adopted to carry out spunlace strengthening on the aramid fiber, and the pressure values of the spunlace are spaced, thus the obtained filter material has larger mechanical tensile strength and tear strength, can maintain good size stability and strength at a high temperature of 200 DEG C, can meets higher temperature, high efficiency and other relatively high filter requirements simultaneously, and has good permeability.
Description
Technical field
The present invention relates to a kind of hydro-entangled non-woven fabric, particularly a kind of aramid fiber hydro-entangled non-woven fabric filtering material and manufacture method thereof.
Background technology
At present, domestic nonwoven fabric filter material uses fibrous materials such as terylene and polypropylene fibre mostly, denomination of invention as applicant's application is " hydro-entangled non-woven fabric filtering material and a manufacture method thereof ", application number is the patent of invention of CN200410053952.6, a kind of preparation method of water thorn terylene filtering material is disclosed, the employing polyster fibre is raw material, through technologies such as carding, pinprick reinforcement and gluing oven dry, make the hydro-entangled non-woven fabric filtering material.It is good, not yielding that this hydro-entangled non-woven fabric filtering material has DIMENSIONAL STABILITY, has the advantage of good percent opening and gas permeability.But mostly there is following shortcoming in this type of filtering material: 1, resistance to elevated temperatures is poor, can't use for a long time under hot conditions, can only be applied under the low temperature environment, and service life is shorter, is difficult to reach the user in aspect instructions for uses such as service lifes.2, mechanical brute force is lower, is requiring high-intensity occasion to be not suitable for using this type of non-weaving cloth, and the machinery that improve product is powerful, can only realize by high-performance fiber, especially for aspects such as fire-entry suit, protective clothings.3, be terylene and polypropylene fiber owing to what use, its fire resistance is not high, in fields such as protective materials and filtering materials significant limitation is arranged.
The most frequently used in the high-temperature-resistant filtering material is glass fibre, it is chopped fiber needle-punched or water stings into nonwoven fabric and long filament is made into fabric, and be processed into sack cleaner and use, glass fibre can use under 260 ℃ of temperature for a long time, but the folding resistance of glass fibre is poor, in frequent deashing process, loss of strength is big, and service life is low.
Having now and adopt aramid fiber to carry out the technology that the water thorn is made non-weaving cloth, still all is to adopt original manufacturing technique of making terylene or polypropylene non-woven fabric, and the machinery brute force of last produced aramid nonwoven cloth is not enough, and yielding, permeability is bad.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high efficiency filter, and is high temperature resistant, and the intensity height has the aramid fiber hydro-entangled non-woven fabric and the manufacture method thereof of good gas permeability.
Technical scheme of the present invention: a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method,
Aramid fiber is carried out pre-shredding, smart shredding, mixing, pre-feeding, combing, lapping, draft process handle laggard entry thorn equipment and carry out the water thorn and reinforce, the aramid fiber that water is stung enters drying plant and dries and obtain aramid fiber hydro-entangled non-woven fabric filtering material; After aramid fiber carries out smart shredding, aramid fiber is destaticed processing by oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn pressure is as follows,
Aramid fiber is adopted in the manufacturing of filtering material of the present invention, aramid fiber is through handling the back by destaticing except that oil-injection machine through pre-shredding and smart shredding in advance, eliminate fiber with static so that carry out the water jet process in later stage, in the process of carrying out the water thorn, carry out five road water thorn processes, water thorn pressure adopts the mode of size interval to carry out, the water thorn pressure that general water jet process adopts all is the mode that increases gradually, because the rigidity of aramid fiber is bigger, make the displacement bounce-back of fiber excessive on the contrary if the water that adopts thorn pressure is excessive, be unfavorable for the entanglement of fiber, so have by reducing the method that whole pressure carries out the water thorn, promptly strive using less pressure to reach more satisfactory Hydroentangled effect, but adopt less pressure to carry out the water thorn, the nonwoven fabric that entanglement is come out is comparatively loose, mechanical strength is also unsatisfactory usually, the present invention adopts small one and large one water thorn pressure to carry out Hydroentangled reinforcing, when being added to, a bigger water thorn pressure makes fibre matting on the fiber like this, apply a less water thorn pressure the more excessive fiber of some displacement bounce-backs can be got back to comparatively desirable position, make the entanglement of fiber more firm.
As preferably, the aramid fiber hydro-entangled non-woven fabric filtering material that obtains and poly tetrafluoroethylene are compressed by pressure roller compound, heating, drying simultaneously, rolling finished product after compound the finishing.With non-weaving cloth and the compound stiffness that can increase filtering material of poly tetrafluoroethylene, increase its filter efficiency simultaneously.
As preferably, the compound temperature of aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene is 300～350 ℃.Adopt this temperature directly that poly tetrafluoroethylene and aramid fiber hydro-entangled non-woven fabric filtering material heat is compound, do not need to be undertaken compound by gluing.
As preferably,, poly tetrafluoroethylene stretched carry out compound with the aramid fiber hydro-entangled non-woven fabric again at aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene compound tense.Because the aperture of poly tetrafluoroethylene is to need to adjust to enable to match with non-weaving cloth, can adjust the aperture at any time as required so in compound, poly tetrafluoroethylene stretched, and can only remove to buy the poly tetrafluoroethylene of respective aperture originally as requested, and can not adjust at any time after buying.
As preferably, the aperture of described poly tetrafluoroethylene is 0.3～0.8 μ m.
As preferably, the aramid fiber of choosing adopts the different mixed with fibers of thickness, and coarse-fibred length is 45～60mm, and fineness is 2～3dex, and the length of fine fibre is 20～35mm, and fineness is 1dex～1.5dex.
Adopt the aramid fiber of different length, different fineness evenly to mix by a certain percentage, last produced filtering material tangles more firm, and mechanical brute force is bigger, and the surface is comparatively smooth.
As preferably, when aramid fiber carried out the lapping PROCESS FOR TREATMENT, lapping highly was 15-20cm.When being lapping, vertical range between two fiber webs is 15-20cm, when making the aramid fiber hydro-entangled non-woven fabric, the lapping of the original terylene non-weaving cloth of aspect ratio of lapping is highly higher, and original height is about 10cm, because there is more static between the aramid fiber, if so paste between two fiber webs lapping the time too near, distance is too little, then makes two position sideslips between throwing the net because static is inhaled mutually, influences the operation of back.
As preferably, the two sides of aramid fiber hydro-entangled non-woven fabric filtering material is compound with poly tetrafluoroethylene respectively.
Requirement according to the filter efficiency of filtering material and stiffness aspect can be compound with the two sides and the poly tetrafluoroethylene of non-weaving cloth.
A kind of aramid fiber hydro-entangled non-woven fabric filtering material, the longitudinal stretching brute force of this filtering material is 400-500N/5cm, the cross directional stretch brute force is 500-600N/5cm; The longitudinal tear brute force is 35-60N/5cm, and the cross directional stretch brute force is 50-70N/5cm.
As preferably, poly tetrafluoroethylene on compound on this filtering material, it quantitatively is 60～150g/m
2, filtration resistance is 140～200pa, filter efficiency is 95%～99.95%.
Filtering material of the present invention adopts high performance aramid fiber as raw material, can satisfy high temperature, higher filtration requirement such as efficient, compare with existing nonwoven fabric filter material, have the following advantages: 1, this hydro-entangled non-woven fabric filtering material is made by aramid fiber, not only improve the intensity of end product, also had the high ventilation rate; 2, this hydro-entangled non-woven fabric filtering material mechanical stretching is powerful and to tear brute force bigger, can keep good DIMENSIONAL STABILITY and intensity under 200 ℃ of hot conditions; 3, this hydro-entangled non-woven fabric filtering material manufacturing technique has added the overlay film processing, to its carry out film compound after, improved the filter efficiency of this material greatly, also increased its stiffness.
The specific embodiment
Embodiment 1:
The manufacture method of present embodiment is as follows:
(1) getting length is that 45mm, fineness are that the aramid fiber 1313 fiber of 2.54dtex carries out pre-shredding, smart shredding, destatic processing by oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, pre-feeding, combing, lapping and drawing-off handle;
(2) enter water thorn equipment through the aramid fiber 1313 fiber of above processing and carry out water jet process and reinforce and make fiber tangle into cloth mutually, adopt five road water thorn operations in the time of the water thorn, the liquid drugs injection diameter of the first road water thorn is 0.13mm, and water thorn pressure is 100bar; The liquid drugs injection diameter of the second road water thorn is 0.1mm, and water thorn pressure is 50bar; The liquid drugs injection diameter of the 3rd road water thorn is 0.13mm, and water thorn pressure is 100bar; The liquid drugs injection diameter of the 4th road water thorn is 0.1mm, and water thorn pressure is 50bar; The liquid drugs injection diameter of the 5th road water thorn is 0.13mm, and water thorn pressure is 100bar;
(3) after water thorn is finished fiber being entered drying plant dries and obtains aramid fiber hydro-entangled non-woven fabric filtering material;
(4) aramid fiber hydro-entangled non-woven fabric filtering material is entered equipment for coating film and carry out the overlay film processing, used membrane material is a poly tetrafluoroethylene, 300～350 ℃ of hot combined temps, pressure 4 kg/cm, 3 meters/minute of the speeds of service; Aramid fiber spunlace non-woven material and poly tetrafluoroethylene are carried out compound in, by stretcher poly tetrafluoroethylene being stretched to the aperture is 0.3 μ m;
(5) come out to enter line corrugation equipment from equipment for coating film, form the final products with various fabric widths of corrugation shape, coiling then, packaging and warehousing.
Final products quantitatively are 70g/m
2, thickness is that 0.45mm, filtration resistance are 200pa, filter efficiency 99.95%.
Embodiment 2:
The manufacture method of present embodiment is as follows:
(1) getting length is that 22mm, fineness are that aramid fiber 1313 fiber and the length of 1dtex is that 51mm, fineness are the aramid fiber 1313 fiber of 2.2dtex, two kinds of fibre weight ratios are 2: 8, carry out pre-shredding, smart shredding, destatic processing by oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, pre-feeding, combing, lapping and drawing-off handle;
(2) enter water thorn equipment through the aramid fiber 1313 fiber of above processing and carry out water jet process and reinforce and make fiber tangle into cloth mutually, adopt five road water thorn operations in the time of the water thorn, the liquid drugs injection diameter of the first road water thorn is 0.13mm, and water thorn pressure is 110bar; The liquid drugs injection diameter of the second road water thorn is 0.1mm, and water thorn pressure is 60bar; The liquid drugs injection diameter of the 3rd road water thorn is 0.13mm, and water thorn pressure is 105bar; The liquid drugs injection diameter of the 4th road water thorn is 0.1mm, and water thorn pressure is 55bar; The liquid drugs injection diameter of the 5th road water thorn is 0.13mm, and water thorn pressure is 100bar;
(3) after water thorn is finished fiber being entered drying plant dries and obtains aramid fiber hydro-entangled non-woven fabric filtering material;
(4) aramid fiber hydro-entangled non-woven fabric filtering material is entered equipment for coating film and carry out the overlay film processing, used membrane material is a poly tetrafluoroethylene, 300～350 ℃ of hot combined temps, pressure 4 kg/cm, 3 meters/minute of the speeds of service; Aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene are carried out compound in, by stretcher poly tetrafluoroethylene being stretched to the aperture is 0.6 μ m;
(5) come out to enter line corrugation equipment from equipment for coating film, form the final products with various fabric widths of corrugation shape, coiling then, packaging and warehousing.
Final products quantitatively are 90g/m
2, thickness is 0.5mm, filtration resistance 180pa, filter efficiency 99.0%.
Embodiment 3:
The manufacture method of present embodiment is as follows:
(1) getting length is that 30mm, fineness are that aramid fiber 1313 fiber and the length of 1.5dtex is that 46mm, fineness are the aramid fiber 1313 fiber of 2.2dtex, two kinds of fibre weight ratios are 4: 6, carry out pre-shredding, smart shredding, destatic processing by oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, pre-feeding, combing, lapping and drawing-off handle;
(2) enter water thorn equipment through the aramid fiber 1313 fiber of above processing and carry out water jet process and reinforce and make fiber tangle into cloth mutually, adopt five road water thorn operations in the time of the water thorn, the liquid drugs injection diameter of the first road water thorn is 0.13mm, and water thorn pressure is 105bar; The liquid drugs injection diameter of the second road water thorn is 0.1mm, and water thorn pressure is 60bar; The liquid drugs injection diameter of the 3rd road water thorn is 0.13mm, and water thorn pressure is 100bar; The liquid drugs injection diameter of the 4th road water thorn is 0.1mm, and water thorn pressure is 50bar; The liquid drugs injection diameter of the 5th road water thorn is 0.13mm, and water thorn pressure is 105bar;
(3) after water thorn is finished fiber being entered drying plant dries and obtains aramid fiber hydro-entangled non-woven fabric filtering material;
(4) aramid fiber hydro-entangled non-woven fabric filtering material is entered equipment for coating film and carry out two-sided overlay film processing, used membrane material is a poly tetrafluoroethylene, 300～350 ℃ of hot combined temps, pressure 4 kg/cm, 3 meters/minute of the speeds of service; Aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene are carried out compound in, by stretcher poly tetrafluoroethylene being stretched to the aperture is 0.4 μ m;
(5) come out to enter line corrugation equipment from equipment for coating film, form the final products with various fabric widths of corrugation shape, coiling then, packaging and warehousing.
Final products quantitatively are 120g/m
2, thickness is 0.55mm, filtration resistance 180pa, filter efficiency 99.95%.
Embodiment 4:
The manufacture method of present embodiment is as follows:
(1) getting length is that 58mm, fineness are that the aramid fiber 1313 fiber of 2.8dtex carries out pre-shredding, smart shredding, destatic processing by oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, pre-feeding, combing, lapping and drawing-off handle;
(2) enter water thorn equipment through the aramid fiber 1313 fiber of above processing and carry out water jet process and reinforce and make fiber tangle into cloth mutually, adopt five road water thorn operations in the time of the water thorn, the liquid drugs injection diameter of the first road water thorn is 0.13mm, and water thorn pressure is 105bar; The liquid drugs injection diameter of the second road water thorn is 0.1mm, and water thorn pressure is 60bar; The liquid drugs injection diameter of the 3rd road water thorn is 0.13mm, and water thorn pressure is 100bar; The liquid drugs injection diameter of the 4th road water thorn is 0.1mm, and water thorn pressure is 50bar; The liquid drugs injection diameter of the 5th road water thorn is 0.13mm, and water thorn pressure is 105bar;
(3) after water thorn is finished fiber being entered drying plant dries and obtains aramid fiber hydro-entangled non-woven fabric filtering material;
(4) aramid fiber hydro-entangled non-woven fabric filtering material is entered equipment for coating film and carry out two-sided overlay film processing, used membrane material is a poly tetrafluoroethylene, 300～350 ℃ of hot combined temps, pressure 4 kg/cm, 3 meters/minute of the speeds of service; Aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene are carried out compound in, by stretcher poly tetrafluoroethylene being stretched to the aperture is 0.8 μ m;
(5) come out to enter line corrugation equipment from equipment for coating film, form the final products with various fabric widths of corrugation shape, coiling then, packaging and warehousing.
Final products quantitatively are 140g/m
2, thickness is 0.65mm, filtration resistance 150pa, filter efficiency 95.0%.Do the tensile strength of filtering material at last and tear powerful test, data are as follows:
By table as seen, grammes per square metre equally all is 140g/m
2The embodiment of the invention 4 the aramid fiber filtering material tensile strength, tear powerful tensile strength than terylene filtering material that adopts common process and aramid fiber filtering material, to tear brute force all strong, and the product of identical grammes per square metre, the thickness minimum of filtering material of the present invention, its density maximum is described, tightness is better, and structure is more compact.The test data of other embodiment of the present invention also shows its tensile strength and tears brute force all better.
Claims (9)
1. aramid fiber hydro-entangled non-woven fabric filtering material manufacture method,
Aramid fiber is carried out pre-shredding, smart shredding, mixing, pre-feeding, combing, lapping, draft process handle laggard entry thorn equipment and carry out the water thorn and reinforce, the aramid fiber that water is stung enters drying plant and dries and obtain aramid fiber hydro-entangled non-woven fabric filtering material; It is characterized in that, after aramid fiber carries out smart shredding, aramid fiber is destaticed processing by oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn pressure is as follows,
2. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 1, it is characterized in that, the aramid fiber hydro-entangled non-woven fabric filtering material that obtains and poly tetrafluoroethylene are compressed by pressure roller compound, heating, drying simultaneously, rolling finished product after compound the finishing.
3. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 2 is characterized in that the compound temperature of aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene is 300～350 ℃.
4, according to claim 2 or 3 described a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture methods, it is characterized in that, at aramid fiber hydro-entangled non-woven fabric filtering material and poly tetrafluoroethylene compound tense, poly tetrafluoroethylene stretched carry out compound with the aramid fiber hydro-entangled non-woven fabric again.
5. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 4 is characterized in that the aperture of described poly tetrafluoroethylene is 0.3～0.8 μ m.
6. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 5, it is characterized in that, the aramid fiber of choosing adopts the different mixed with fibers of thickness, coarse-fibred length is 45～60mm, fineness is 2～3dex, the length of fine fibre is 20～35mm, and fineness is 1dex～1.5dex.
7. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 5 is characterized in that when aramid fiber carried out the lapping PROCESS FOR TREATMENT, lapping highly was 15-20cm.
8. a kind of aramid fiber hydro-entangled non-woven fabric filtering material manufacture method according to claim 2 is characterized in that the two sides of aramid fiber hydro-entangled non-woven fabric filtering material is compound with poly tetrafluoroethylene respectively.
9. an aramid fiber hydro-entangled non-woven fabric filtering material is characterized in that, the longitudinal stretching brute force of this filtering material is 400-500N/5cm, and the cross directional stretch brute force is 500-600N/5cm; The longitudinal tear brute force is 35-60N/5cm, and the cross directional stretch brute force is 50-70N/5cm.
10. aramid fiber hydro-entangled non-woven fabric filtering material according to claim 9 is characterized in that, poly tetrafluoroethylene on compound on this filtering material, and it quantitatively is 60～150g/m
2, filtration resistance is 140～200pa, filter efficiency is 95%～99.95%.
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| CN102864525A (en) * | 2012-10-19 | 2013-01-09 | 南通大学 | High-pressure gas flow type soft fiber opener |
| CN103603137A (en) * | 2013-11-11 | 2014-02-26 | 绍兴市恒睿无纺布科技有限公司 | Papermaking rubber roller with high-strength non-woven and production process |
| CN103785225A (en) * | 2012-11-05 | 2014-05-14 | 南昌承乐新材料有限责任公司 | Preparation method of multi-component flame retardant easy-to-clean filtering material and non-woven filtering material |
| CN105688512A (en) * | 2016-01-28 | 2016-06-22 | 辽宁鸿盛环境技术集团有限公司 | Spunlace precise surface filter material and preparation method thereof |
| CN105709504A (en) * | 2016-01-28 | 2016-06-29 | 辽宁鸿盛环境技术集团有限公司 | High-efficiency spunlace filter material and preparing method thereof |
| CN108543349A (en) * | 2018-05-02 | 2018-09-18 | 浙江互生非织造布有限公司 | A kind of gradient filtration multilayer spun lacing needle-punched composite and its production technology |
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| CN111962212A (en) * | 2020-08-13 | 2020-11-20 | 蒋俊 | High-toughness medical non-woven fabric and preparation method thereof |
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| CN102864525A (en) * | 2012-10-19 | 2013-01-09 | 南通大学 | High-pressure gas flow type soft fiber opener |
| CN103785225B (en) * | 2012-11-05 | 2016-08-17 | 南昌承乐新材料有限责任公司 | The fire-retardant easy decontamination filtering material of multicomponent and the preparation method of non-woven filter material |
| CN103785225A (en) * | 2012-11-05 | 2014-05-14 | 南昌承乐新材料有限责任公司 | Preparation method of multi-component flame retardant easy-to-clean filtering material and non-woven filtering material |
| CN103603137A (en) * | 2013-11-11 | 2014-02-26 | 绍兴市恒睿无纺布科技有限公司 | Papermaking rubber roller with high-strength non-woven and production process |
| CN103603137B (en) * | 2013-11-11 | 2016-08-31 | 绍兴市恒睿无纺布科技有限公司 | Papermaking rubber roller high-strength nonwoven fabrics and production technology thereof |
| CN105688512A (en) * | 2016-01-28 | 2016-06-22 | 辽宁鸿盛环境技术集团有限公司 | Spunlace precise surface filter material and preparation method thereof |
| CN105709504A (en) * | 2016-01-28 | 2016-06-29 | 辽宁鸿盛环境技术集团有限公司 | High-efficiency spunlace filter material and preparing method thereof |
| WO2019174597A1 (en) | 2018-03-14 | 2019-09-19 | 东丽纤维研究所（中国）有限公司 | Filter material |
| CN108543349A (en) * | 2018-05-02 | 2018-09-18 | 浙江互生非织造布有限公司 | A kind of gradient filtration multilayer spun lacing needle-punched composite and its production technology |
| CN111962212A (en) * | 2020-08-13 | 2020-11-20 | 蒋俊 | High-toughness medical non-woven fabric and preparation method thereof |
| CN111962212B (en) * | 2020-08-13 | 2021-05-04 | 联丰医用卫生材料(始兴)有限公司 | High-toughness medical non-woven fabric and preparation method thereof |
| CN113046928A (en) * | 2020-08-13 | 2021-06-29 | 蒋俊 | High-toughness medical non-woven fabric |
| CN113046928B (en) * | 2020-08-13 | 2023-12-15 | 常熟市良恒无纺制品有限公司 | High-toughness medical non-woven fabric |
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