CN102416277B - Filter material for ultrafine dust filtering and preparation method thereof - Google Patents
Filter material for ultrafine dust filtering and preparation method thereof Download PDFInfo
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- CN102416277B CN102416277B CN201110331832.8A CN201110331832A CN102416277B CN 102416277 B CN102416277 B CN 102416277B CN 201110331832 A CN201110331832 A CN 201110331832A CN 102416277 B CN102416277 B CN 102416277B
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Abstract
The invention relates to a filter material for the below 2mum ultrafine dust filtering and a preparation method thereof. Present filter materials have the defects of nonuniform permeability, easy stripping, short service life and the like, so the effect of the present filter materials applied to a bag filter and the cost performance are not ideal. The filter material for the ultrafine dust filtering provided in the invention is characterized in that: the filter material comprises the following three layers: an ultrafine denier fibrous layer (0.05-0.08 deniers) at the upper layer, a woven mesh layer at the middle layer, and a coarse denier fibrous layer (2.6-5 deniers) at the lower layer, wherein the weight part ratio of the ultrafine denier fibrous layer: the woven mesh layer: the coarse denier fibrous layer is 185-220:80-110:185-220. The preparation method allows the filtration accuracy of the filter material to be improved and the whole air permeability of the filter material to be improved.
Description
Technical field
The present invention relates to a kind of industrial filter material and preparation method thereof, relate in particular to a kind of filtrate and preparation method who can be used for the ultrafine dust filtering below 2 μ m.
Background technology
Along with the develop rapidly of China's economic, people's environmental protection consciousness strengthens day by day, also more and more focuses on healthy.In industrial production, the application of sack cleaner is very extensive, conventionally to the processing of flue gas, dust, must adopt efficient sack cleaner.And at present the filtrate of sack cleaner selects the fiber at 1.5～2.2 dawn to make filter bag mostly, though can play good filter effect to the above dust of 10 μ m, for the filtration of the dust below 5 μ m, can only utilize coated filter material to realize.Because of coated filter material, to have resistance large, and the defect such as gas permeability is inhomogeneous, easily causes demoulding, and service life is short, therefore the effect in sack cleaner and cost performance are not very good.
Summary of the invention
The present invention is directed to the defect that prior art exists, a kind of filtrate for ultrafine dust filtering and preparation method thereof is provided, there is the function of good filtration ultrafine dust, also there is good support strength and permeability.
For this reason, the present invention takes following technical scheme: a kind of filtrate for ultrafine dust filtering, it is characterized in that: by three-decker, formed, the superfine Denier fibre layer (0.05～0.08 dawn), the woven net layer of cloth in middle level and the coarse denier fiber layer of lower floor (2.65 dawn) that comprise upper strata, the content of described superfine Denier fibre layer, woven net layer of cloth and coarse denier fiber layer is (weight portion): 185～220: 80～110: 185～220.
The content of described superfine Denier fibre layer, woven net layer of cloth and coarse denier fiber layer is (weight portion): 200: 100: 200.
The warp-wise brute force of described woven net layer of cloth is >=1600N (50mm * 200mm) that broadwise brute force is >=1500N (50mm * 200mm) that the mass area ratio of described woven net layer of cloth is 80～110g/m2.
The above-mentioned filtrate production method for ultrafine dust filtering, comprises the steps:
1. will by shredding, homogenizing, mix, be carded to the thin dawn web layer in upper strata without opening fine fine count fiber;
2. coarse denier fiber is mixed, is carded to lower coarse dawn web layer by shredding, homogenizing;
3. needling process is carried out to without opening the mixed layer of inserting woven mesh between fine thin dawn web layer and lower coarse dawn web layer in the upper strata making, make semi-finished product filtrate;
4. the semi-finished product filtrate making is carried out to chemistry and open fine processing, make the upper strata of filtrate become the superfine Denier fibre layer at 0.05～0.08 dawn, the woven net layer of cloth in middle level and lower coarse dawn fibrage remain unchanged, and making upper strata is that superfine Denier fibre layer, middle level are that woven mesh, lower floor are the filtrate semi-finished product of coarse denier fiber layer;
5. above-mentioned filtrate semi-finished product carried out to tentering thermal finalization, singe, make final filtrate after the processing such as press polish.
The chemistry of described step in 4. open fine process to be generally subtract alkali number and process.While processing by subtracting alkali number, surface layer can produce very large variation, and a fiber originally produces 37 fibers through subtracting alkali treatment meeting, therefore the diameter of fiber is just little, has reached ultra-fine degree.
Described to subtract time that alkali number processes be that 30～40min, temperature are that 85～100 ℃, bake out temperature are 160～180 ℃, and drying time is 8～10min.
The present invention has following beneficial effect:
1, the upper strata of filtrate adopts superfine Denier fibre layer, and has uniform gas permeability, can realize secondary filter to the ultrafine dust below 2 μ m, has improved the filtering accuracy of filtrate.
2, the centre of filtrate is equipped with woven mesh, has improved the powerful and elongation at break index through broadwise of filtrate integral body.
3, the lower floor of filtrate is coarse denier fiber layer, and the integral body of filtrate is played to reinforcement supporting role, and the filtration resistance of coarse denier fiber layer is low, is conducive to improve the overall air permeability energy of filtrate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
The filtrate for ultrafine dust filtering as shown in Figure 1, by three-decker, formed, the superfine Denier fibre layer (0.05～0.08 dawn), the woven net layer of cloth in middle level and the coarse denier fiber layer of lower floor (2.65 dawn) that comprise upper strata, the content of superfine Denier fibre layer, woven net layer of cloth and coarse denier fiber layer is (weight portion): 185～220: 80～110: 185～220.The content of superfine Denier fibre, woven mesh and coarse denier fiber is preferably (weight portion): 200: 100: 200.The warp-wise brute force of woven mesh is>=1600N (50mm * 200mm) that broadwise brute force is>=1500N (50mm * 200mm) that the mass area ratio of woven mesh is 80～110g/m
2.
The above-mentioned filtrate preparation method for ultrafine dust filtering, comprises the steps:
1. will by shredding, homogenizing, mix, be carded to the thin dawn web layer in upper strata without opening fine fine count fiber;
2. coarse denier fiber is mixed, is carded to lower coarse dawn web layer by shredding, homogenizing;
3. needling process is carried out to without opening the mixed layer of inserting woven mesh between fine thin dawn web layer and lower coarse dawn web layer in the upper strata making, make semi-finished product filtrate;
4. the semi-finished product filtrate making is carried out to chemistry and open fine processing, be generally and subtract alkali number processing, subtracting time that alkali number processes and be 30～40min, temperature and be 85～100 ℃, bake out temperature is 160～180 ℃, drying time is 8～10min, after processing, the upper strata of filtrate becomes the superfine Denier fibre layer at 0.05～0.08 dawn, the woven net layer of cloth in middle level and lower coarse dawn fibrage remain unchanged, and making upper strata is that superfine Denier fibre layer, middle level are that woven mesh, lower floor are the filtrate semi-finished product of coarse denier fiber layer;
5. more above-mentioned filtrate semi-finished product carried out to tentering thermal finalization, singe, make final filtrate after the processing such as press polish.
Upper strata of the present invention adopts superfine Denier fibre layer, and has uniform gas permeability, can realize secondary filter to the ultrafine dust below 2 μ m, has improved the filtering accuracy of filtrate.The centre of filtrate is equipped with woven mesh, has improved the powerful and elongation at break index through broadwise of filtrate integral body.The lower floor of filtrate is coarse denier fiber layer, and the integral body of filtrate is played to reinforcement supporting role, and the filtration resistance of coarse denier fiber layer is low, is conducive to improve the overall air permeability energy of filtrate.
It needs to be noted, the mode of above-described embodiment only limits to describe embodiment, but the present invention is confined to aforesaid way incessantly, and those skilled in the art can modify easily accordingly in not departing from the scope of the present invention, therefore scope of the present invention should comprise disclosed principle and the maximum magnitude of new feature.
Claims (3)
1. the filtrate for ultrafine dust filtering, it is characterized in that: by three-decker, formed, its fiber number of superfine Denier fibre layer that comprises upper strata was 0.05～0.08 dawn, its fiber number of coarse denier fiber layer of the woven net layer of cloth in middle level and lower floor was 2.65 dawn, described superfine Denier fibre layer, the content of woven net layer of cloth and coarse denier fiber layer is (weight portion): 200:100:200, when area is 50mm * 200mm, the warp-wise of woven net layer of cloth is powerful is>=1600N, when area is 50mm * 200mm, broadwise is powerful is>=1500N, the mass area ratio of described woven mesh is 80～110g/m
2,
The described filtrate for ultrafine dust filtering is prepared by the following method:
1. will by shredding, homogenizing, mix, be carded to the thin dawn web layer in upper strata without opening fine fine count fiber;
2. coarse denier fiber is mixed, is carded to lower coarse dawn web layer by shredding, homogenizing;
3. needling process is carried out to without opening the mixed layer of inserting woven mesh between fine thin dawn web layer and lower coarse dawn web layer in the upper strata making, make semi-finished product filtrate;
4. the semi-finished product filtrate making is carried out to chemistry and open fine processing, make the upper strata of filtrate become the superfine Denier fibre layer at 0.05～0.08 dawn, the woven net layer of cloth in middle level and lower coarse dawn fibrage remain unchanged, and making upper strata is that superfine Denier fibre layer, middle level are that woven mesh, lower floor are the filtrate semi-finished product of coarse denier fiber layer;
5. above-mentioned filtrate semi-finished product carried out to tentering thermal finalization, singe, make final filtrate after the processing such as press polish.
2. according to the filtrate for ultrafine dust filtering described in claims 1, it is characterized in that: described chemistry is opened fibre and is treated to and subtracts alkali number and process.
3. according to the filtrate for ultrafine dust filtering described in claims 2, it is characterized in that: described to subtract time that alkali number processes be that 30～40min, temperature are that 85～100 ℃, bake out temperature are 160～180 ℃, and drying time is 8～10min.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331832.8A CN102416277B (en) | 2011-10-27 | 2011-10-27 | Filter material for ultrafine dust filtering and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110331832.8A CN102416277B (en) | 2011-10-27 | 2011-10-27 | Filter material for ultrafine dust filtering and preparation method thereof |
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| CN102416277A CN102416277A (en) | 2012-04-18 |
| CN102416277B true CN102416277B (en) | 2014-04-16 |
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Citations (6)
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|---|---|---|---|---|
| CN1590635A (en) * | 2004-06-17 | 2005-03-09 | 东莞市新纶纤维材料科技有限公司 | Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather |
| CN1712100A (en) * | 2005-05-12 | 2005-12-28 | 孙熙 | Production of high-density topping filtering material from three gradient |
| US7137510B1 (en) * | 1997-11-25 | 2006-11-21 | Filterwerk Mann & Hummel Gmbh | Filter element |
| JP2011098292A (en) * | 2009-11-06 | 2011-05-19 | Kureha Ltd | Nonwoven fabric for filter |
| CN202387309U (en) * | 2011-10-27 | 2012-08-22 | 浙江宇邦滤材科技有限公司 | Filtering material for filtering superfine dust |
| JP5192520B2 (en) * | 2005-10-04 | 2013-05-08 | ローム アンド ハース カンパニー | Microbicidal composition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0716570B2 (en) * | 1992-01-22 | 1995-03-01 | 株式会社フジコー | Filter cloth with high collection efficiency and method for producing the same |
-
2011
- 2011-10-27 CN CN201110331832.8A patent/CN102416277B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7137510B1 (en) * | 1997-11-25 | 2006-11-21 | Filterwerk Mann & Hummel Gmbh | Filter element |
| CN1590635A (en) * | 2004-06-17 | 2005-03-09 | 东莞市新纶纤维材料科技有限公司 | Processing method of ultrafine fiber needing non-woven fabric simulated genuine leather |
| CN1712100A (en) * | 2005-05-12 | 2005-12-28 | 孙熙 | Production of high-density topping filtering material from three gradient |
| JP5192520B2 (en) * | 2005-10-04 | 2013-05-08 | ローム アンド ハース カンパニー | Microbicidal composition |
| JP2011098292A (en) * | 2009-11-06 | 2011-05-19 | Kureha Ltd | Nonwoven fabric for filter |
| CN202387309U (en) * | 2011-10-27 | 2012-08-22 | 浙江宇邦滤材科技有限公司 | Filtering material for filtering superfine dust |
Non-Patent Citations (2)
| Title |
|---|
| 《涤锦复合超细纤维开纤工艺的制定》;李志群等;《针织工业》;20101231(第6期);第39-40页 * |
| 李志群等.《涤锦复合超细纤维开纤工艺的制定》.《针织工业》.2010,(第6期),第39-40页. |
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| CN102416277A (en) | 2012-04-18 |
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