CN102418238A - Aramid spun-lace non-woven fabric filtering material and production method thereof - Google Patents
Aramid spun-lace non-woven fabric filtering material and production method thereof Download PDFInfo
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- CN102418238A CN102418238A CN2011102634879A CN201110263487A CN102418238A CN 102418238 A CN102418238 A CN 102418238A CN 2011102634879 A CN2011102634879 A CN 2011102634879A CN 201110263487 A CN201110263487 A CN 201110263487A CN 102418238 A CN102418238 A CN 102418238A
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Abstract
The invention discloses an aramid spun-lace non-woven fabric filtering material and a production method thereof. The spun-lacing production method comprises the steps that aramid fibers are used as raw materials; after the aramid fibers are finely opened, static electricity removal treatment is conducted through an oil sprayer; and when spun-lade reinforcement is conducted to the aramid fibers, multiple spun-laces are adopted for reinforcement and the pressure magnitudes of the spun-laces are spaced. The mechanical tensile strength and the tearing strength of the obtained filtering material are high, the dimensional stability and the strength can be kept to be good under 200 DEG C high-temperature conditions, high filtering requirements such as high temperature, high efficiency and the like can be satisfied at the same time and the air permeability is good.
Description
The application is for dividing an application, and the application number of original application is 201010257617.3, and the applying date is 2010-08-18, and denomination of invention is " a kind of aramid fiber hydro-entangled non-woven fabric filtering material and a manufacturing approach thereof ".
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 manufacturing approach thereof.
Background technology
At present; Domestic nonwoven fabric filter material uses fibrous materials such as terylene and polypropylene fibre mostly; Denomination of invention like applicant's application is " hydro-entangled non-woven fabric filtering material and a manufacturing approach thereof ", and application number is the patent of invention of CN200410053952.6, discloses a kind of preparation method of water thorn terylene filtering material; The employing polyster fibre is raw material, through technologies such as carding, pinprick reinforcement and gluing oven dry, process 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 under hot conditions, use for a long time, 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 unsuitable this type of non-weaving cloth that uses of high-intensity occasion, and the machinery that improve product is powerful, can only realize through 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 intensity is high, has the aramid fiber hydro-entangled non-woven fabric and the manufacturing approach thereof of good gas permeability.
Technical scheme of the present invention: aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach,
With aramid fiber carry out preparatory shredding, smart shredding, mixing, feeding, combing, lapping, draft process are handled laggard entry thorn equipment and are carried out the water thorn and reinforce in advance, the aramid fiber that the water thorn is good gets into 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 through oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn liquid drugs injection diameter is following,
Aramid fiber is adopted in the manufacturing of filtering material of the present invention, and aramid fiber destatics through removing oil-injection machine through handling the back through preparatory 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, makes 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, promptly strive using less pressure to reach more satisfactory Hydroentangled effect, but adopt less pressure to carry out the water thorn through reducing the method that whole pressure carries out the water thorn; The nonwoven fabric that entanglement is come out is comparatively loose; Mechanical strength is also unsatisfactory usually, and the present invention adopts small one and large one water thorn pressure to carry out Hydroentangled reinforcing, makes fibre matting on the fiber when a bigger water thorn pressure is added to 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, with the aramid fiber hydro-entangled non-woven fabric filtering material that obtains and poly tetrafluoroethylene through pressure roller compress, heating, drying carry out compound, rolling finished product after the compound completion.With non-weaving cloth and the compound stiffness that can increase filtering material of poly tetrafluoroethylene, increase its filter efficiency simultaneously.
As preferably, the temperature of aramid fiber hydro-entangled non-woven fabric filtering material and the compound heating of 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, need not carry out compound through 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 adjustment 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 fiber mixing of thickness, and coarse-fibred length is 45～60mm, and fineness is 2～3dtex, and the length of fine fibre is 20～35mm, and fineness is 1dtex～1.5dtex.
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, the 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, the operation of influence back because static is inhaled mutually.
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.
Aramid fiber hydro-entangled non-woven fabric filtering material is characterized in that, it passes through the following steps manufacturing:
With aramid fiber carry out preparatory shredding, smart shredding, mixing, feeding, combing, lapping, draft process are handled laggard entry thorn equipment and are carried out the water thorn and reinforce in advance, the aramid fiber that the water thorn is good gets into 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 through oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn liquid drugs injection diameter is following,
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 processed by aramid fiber, has not only improved the intensity of end product, also has the high ventilation rate; 2, this hydro-entangled non-woven fabric filtering material mechanical stretching is powerful and to tear brute force bigger, can under 200 ℃ of hot conditions, keep good DIMENSIONAL STABILITY and intensity; 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 manufacturing approach of present embodiment is following:
(1) getting length is that 45mm, fineness are that the aramid fiber 1313 fiber of 2.54dtex carries out preparatory shredding, smart shredding; Destatic processing through oil-injection machine then; Ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, in advance feeding, combing, lapping and drawing-off are handled;
(2) get into 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 each other, 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 accomplished fiber being got into 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 got into 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, through stretcher poly tetrafluoroethylene being stretched to the aperture is 0.3 μ m;
(5) come out to get into 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 manufacturing approach of present embodiment is following:
(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 preparatory shredding, smart shredding; Destatic processing through oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, in advance feeding, combing, lapping and drawing-off are handled;
(2) get into 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 each other, 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 accomplished fiber being got into 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 got into 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, through stretcher poly tetrafluoroethylene being stretched to the aperture is 0.6 μ m;
(5) come out to get into 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 manufacturing approach of present embodiment is following:
(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 preparatory shredding, smart shredding; Destatic processing through oil-injection machine then, ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, in advance feeding, combing, lapping and drawing-off are handled;
(2) get into 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 each other, 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 accomplished fiber being got into 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 got into 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, through stretcher poly tetrafluoroethylene being stretched to the aperture is 0.4 μ m;
(5) come out to get into 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 manufacturing approach of present embodiment is following:
(1) getting length is that 58mm, fineness are that the aramid fiber 1313 fiber of 2.8dtex carries out preparatory shredding, smart shredding; Destatic processing through oil-injection machine then; Ejection destatics oil aramid fiber is destaticed on the oil-injection machine, mixes afterwards, in advance feeding, combing, lapping and drawing-off are handled;
(2) get into 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 each other, 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 accomplished fiber being got into 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 got into 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, through stretcher poly tetrafluoroethylene being stretched to the aperture is 0.8 μ m;
(5) come out to get into 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 and the test of tearing brute force of filtering material at last, data are following:
Visible by table, 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 of filtering material of the present invention is minimum; Explain that its density is maximum, tightness is better, and structure is more compact.The test data of other embodiment of the present invention also shows its tensile strength and to tear brute force all better.
Claims (9)
1. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach,
With aramid fiber carry out preparatory shredding, smart shredding, mixing, feeding, combing, lapping, draft process are handled laggard entry thorn equipment and are carried out the water thorn and reinforce in advance, the aramid fiber that the water thorn is good gets into 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 through oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn liquid drugs injection diameter is following,
2. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach according to claim 1; It is characterized in that; With the aramid fiber hydro-entangled non-woven fabric filtering material that obtains and poly tetrafluoroethylene through pressure roller compress, heating, drying carry out compound, rolling finished product after the compound completion.
3. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach according to claim 2 is characterized in that the temperature of aramid fiber hydro-entangled non-woven fabric filtering material and the compound heating of poly tetrafluoroethylene is 300～350 ℃.
4. according to claim 2 or 3 described aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approaches; 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. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach according to claim 4 is characterized in that the aperture of described poly tetrafluoroethylene is 0.3～0.8 μ m.
6. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach according to claim 5; It is characterized in that; The aramid fiber of choosing adopts the different fiber mixing of thickness, and coarse-fibred length is 45～60mm, and fineness is 2～3dtex; The length of fine fibre is 20～35mm, and fineness is 1dtex～1.5dtex.
7. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach according to claim 5 is characterized in that, when aramid fiber carried out the lapping PROCESS FOR TREATMENT, lapping highly was 15-20cm.
8. aramid fiber hydro-entangled non-woven fabric filtering material manufacturing approach 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. aramid fiber hydro-entangled non-woven fabric filtering material; It is characterized in that; It is through the following steps manufacturing: with aramid fiber carry out preparatory shredding, smart shredding, mixing, feeding, combing, lapping, draft process are handled laggard entry thorn equipment and are carried out the water thorn and reinforce in advance, the aramid fiber that the water thorn is good gets into 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 through oil-injection machine, when aramid fiber being carried out the reinforcing of water thorn, adopt multiple tracks water thorn to reinforce, water thorn liquid drugs injection diameter is following,
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| CN2011102634879A CN102418238A (en) | 2010-08-18 | 2010-08-18 | Aramid spun-lace non-woven fabric filtering material and production method thereof |
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| CN2011102634879A CN102418238A (en) | 2010-08-18 | 2010-08-18 | Aramid spun-lace non-woven fabric filtering material and production method thereof |
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| CN2010102576173A Division CN101956296B (en) | 2010-08-18 | 2010-08-18 | Aramid spunlaced non-woven fabric filter material and manufacturing method thereof |
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Cited By (4)
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| CN103266423A (en) * | 2013-05-16 | 2013-08-28 | 上海博格工业用布有限公司 | Manufacturing technology for geotechnical cloth |
| CN105169829A (en) * | 2015-08-26 | 2015-12-23 | 浙江宇邦滤材科技有限公司 | Aramid-fiber superfine-fiber needle-punched filter bag and preparation method thereof |
| CN108579208A (en) * | 2018-04-09 | 2018-09-28 | 厦门高科防静电装备有限公司 | The preparation method of electrostatic filter pulp and the electrostatic filter pulp made from the preparation method |
| CN113882084A (en) * | 2020-07-03 | 2022-01-04 | 浙江晨阳无纺布科技有限公司 | Production process of high-dust-absorption spunlace jacquard floor mop |
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- 2010-08-18 CN CN2011102634879A patent/CN102418238A/en active Pending
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103266423A (en) * | 2013-05-16 | 2013-08-28 | 上海博格工业用布有限公司 | Manufacturing technology for geotechnical cloth |
| CN105169829A (en) * | 2015-08-26 | 2015-12-23 | 浙江宇邦滤材科技有限公司 | Aramid-fiber superfine-fiber needle-punched filter bag and preparation method thereof |
| CN108579208A (en) * | 2018-04-09 | 2018-09-28 | 厦门高科防静电装备有限公司 | The preparation method of electrostatic filter pulp and the electrostatic filter pulp made from the preparation method |
| CN113882084A (en) * | 2020-07-03 | 2022-01-04 | 浙江晨阳无纺布科技有限公司 | Production process of high-dust-absorption spunlace jacquard floor mop |
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Application publication date: 20120418 |