CN203874574U - Glass fiber and PTFE fiber blended filter material - Google Patents
Glass fiber and PTFE fiber blended filter material Download PDFInfo
- Publication number
- CN203874574U CN203874574U CN201420068762.0U CN201420068762U CN203874574U CN 203874574 U CN203874574 U CN 203874574U CN 201420068762 U CN201420068762 U CN 201420068762U CN 203874574 U CN203874574 U CN 203874574U
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- Prior art keywords
- ptfe
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- fiber
- filter material
- filtrate
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- Expired - Lifetime
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 101
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 101
- 239000000835 fiber Substances 0.000 title claims abstract description 50
- 239000003365 glass fiber Substances 0.000 title claims abstract description 26
- 239000000463 material Substances 0.000 title abstract description 18
- 239000004744 fabric Substances 0.000 claims abstract description 18
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 18
- 239000000706 filtrate Substances 0.000 claims description 56
- 239000010410 layer Substances 0.000 claims description 44
- 239000011521 glass Substances 0.000 claims description 32
- 239000000203 mixture Substances 0.000 claims description 31
- 238000000034 method Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 20
- 206010046996 Varicose vein Diseases 0.000 claims description 19
- 238000005470 impregnation Methods 0.000 claims description 17
- 239000004809 Teflon Substances 0.000 claims description 12
- 229920006362 Teflon® Polymers 0.000 claims description 12
- 210000004379 membrane Anatomy 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000001914 filtration Methods 0.000 abstract description 16
- 230000007797 corrosion Effects 0.000 abstract description 6
- 238000005260 corrosion Methods 0.000 abstract description 6
- 239000000779 smoke Substances 0.000 abstract description 4
- 230000035699 permeability Effects 0.000 abstract description 2
- 238000007654 immersion Methods 0.000 abstract 3
- 238000005452 bending Methods 0.000 abstract 1
- 238000003475 lamination Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 13
- 239000000428 dust Substances 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000002131 composite material Substances 0.000 description 5
- 239000012982 microporous membrane Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000005098 hot rolling Methods 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000009987 spinning Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 239000004734 Polyphenylene sulfide Substances 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003500 flue dust Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000005021 gait Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000013327 media filtration Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000004056 waste incineration Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
The utility model provides a glass fiber and PTFE fiber blended filter material. The blended filter material sequentially comprises a polytetrafluoroethylene microporous film layer, a polytetrafluoroethylene immersion treatment layer and a glass fiber and PTFE fiber blended expanded cloth layer from a dust-facing surface to a purified gas surface, wherein when the immersion treatment temperature of the polytetrafluoroethylene immersion treatment layer is higher than 300 DEG C, PTFE is in a half-molten state at the high temperature, and the glass fiber and the PTFE fiber are bonded together. According to the blended filter material, warp yarns and weft yarns of the filter material are glass fiber and the PTFE fiber blended yarns, and the content of the PTFE fiber is controlled at 55wt%-60wt%, so that the toughness and bending resistance of the filter material are remarkably improved, and the blended filter material is high in lamination fastness, good in air permeability, high in filter fineness, long in service life and low in cost, has surface filtering efficacy, can resist high temperature and corrosion, and can be applied to working condition environments having the characteristics of complex smoke components and high temperature and high corrosiveness.
Description
Technical field
The utility model relates to a kind of blending filtrate, the filtering material of especially a kind of glass and PTFE fiber blend.
Background technology
Flue-gas temperature that the industry such as waste incineration and other biomass power generation, coal-burning boiler, chemical industry produces is high, complicated, contains the burn into harmful substances such as soda acid, heavy metal, to high-temperature-resistant filtering material overall target, requires very high.
Require the temperature tolerance of filtrate good, bear for a long time high temperature and can not make its intensity decline and cause filter bag to damage.Require the good corrosion resistance of filtrate, resistance to oxidation, acidproof, hydrolysis, high temperature is non-hygroscopic, and chemical stability is good.Require the intensity of filtrate high, can bear the motion of long-term expansion and contraction, guarantee that filter bag keeps long-term use indeformable.Require the deashing of filtrate good, because the smoke components of operating mode is complicated, the flue dust particle diameter of generation is thin, and viscosity is high.Require the high-efficiency low-resistance that has of filtrate, good permeability, filtering accuracy must reach discharge standard requirement simultaneously, and running resistance increases slowly, and this is guarantee filtrate service life basic.
The combination property of the fibers such as the glass fibre that high temperature filtration field is used at present, polyphenylene sulfide, polyimides, aramid fiber is poor, can not meet the actual demand of filtering under above-mentioned worst hot case; The combination property of PTFE is fine, but because its price is high, has limited range of application.
Utility model content
The purpose of this utility model is aimed at exhaust gas components complexity, temperature is high, corrosivity is large work condition environment, and a kind of high temperature resistant, corrosion-resistant, strainability is good, long service life, cost are low glass and PTFE fiber blend filtrate and preparation method thereof are provided.
Glass and the PTFE fiber blend filtrate of realizing the purpose of this utility model, comprise microporous teflon membran layer by dust-collecting face successively to pure qi (oxygen) face, polytetrafluoroethylene (PTFE) impregnation process layer, glass and PTFE fiber blend varicosity layer of cloth, polytetrafluoroethylene (PTFE) impregnation process layer.
The aperture of described microporous teflon membran layer is between 0.1 μ m-2.0 μ m.
The warp thread of described glass and PTFE fiber blend varicosity layer of cloth is superfine glass fiber yarn and PTFE fiber blend yarn, and weft yarn is for making through superfine glass fiber yarn and the PTFE fiber blend yarn of varicosity processing.
The utility model glass and PTFE blending filtrate through weft yarn, use glass and PTFE fibre blending yarn, significantly improve the overall flexibility of filtrate, the folding resistance of raising filtrate; The overlay film fastness of blending filtrate is high, adopts hot rolling coating technique, owing to implanting PTFE fiber in weft yarn, with PTFE emulsion and PTFE microporous membrane under high temperature semi-molten state in conjunction with effective, both guaranteed overlay film fastness, take into account again Air permenbility.
Blending filtrate four-layer structure, filtering accuracy is high, has surface filtration effect.
The utility model filtrate top layer is smooth, fine and close microporous teflon membran, and filter type is realized " surface filtration ", be conducive to, to careful dust collection, catch dirt effect stability, thereby efficiency of seizing dust is higher than other filtering material, and dust removal efficiency reaches more than 99.995%; And the easy deashing of filtrate, running resistance only has 1/3 of traditional filtrate, and its filter efficiency and the rate of filtration significantly improve.
The filtrate second layer is the polytetrafluoroethylene (PTFE) impregnate layer forming after polytetrafluoroethylene (PTFE) impregnation process, and this layer can play bridge beam action between microporous teflon membran and PTFE web, is convenient to the combination of the two, increases overlay film firmness and durability degree.
The 3rd layer of filtrate is glass and PTFE fiber blend varicosity cloth, due to glass and PTFE fiber blend varicosity cloth acid-fast alkali-proof, high temperature resistant and water resistance, can improve the decay resistance of filtrate; Meanwhile, glass and PTFE fiber blend varicosity cloth add high-strength PTFE fiber in spinning process, and the one, play the pliability effect that strengthens scribbled; The 2nd, play the effect of reinforcement, make composite echelon filter material keep very high tensile strength, extend the service life of filtrate.
The 4th layer of the filtrate polytetrafluoroethylene (PTFE) impregnate layer for forming after polytetrafluoroethylene (PTFE) impregnation process, this layer can improve the combination properties such as the heatproof, corrosion resistant, Anti-dew of filtrate pure qi (oxygen) face; Guarantee that filter material surface is smooth simultaneously, be conducive to passing through smoothly of air-flow, reduce running resistance.
Glass of the present utility model and PTFE fiber blend filtrate, the porosity of impregnation process layer and blending varicosity layer of cloth is greater than polytetrafluoroethylmicroporous microporous membrane, to entering the dusty gas of filtrate inside, can play diffusing air current effect, effectively reduces filtration resistance.
The advantages such as polytetrafluoroethylene (PTFE) product has high-low temperature resistant, corrosion-resistant, weatherability, highly lubricatedly do not adhere to, nonhazardous, because the aperture of polytetrafluoroethylmicroporous microporous membrane is little of 0.1 μ m-2.0 μ m, during filtrating smoke dust without forming dust layer, rely on catching dirt function and can having the good dirt effect of catching of self, dust catching filter can reach more than 99.99%; Controlled powder process dirt enters filtrate depths simultaneously, prevents that filtrate is blocked; In addition, the film surface coefficient of kinetic friction reduces, and has improved deashing property, also contributes to improve the hydrophobicity of self, can prevent that filtrate from causing filter bag fouling because of dewfall.
The microstructure of glass of the present utility model and PTFE fiber blend filter material surface PTFE microporous membrane as shown in Figure 2.5 is PTFE fiber, and 6 is superfine glass fiber yarn, and glass and PTFE blending filtrate ground floor to the four layer porosities increase gradually, are conducive to air-flow and pass through smoothly.Only a few enters the dust of filtrate inside, be easy under the impact of air-flow, through filtrate, to guarantee that filtrate inside is difficult for control of dust, filtrate resistance after long-term operation substantially do not raise or the rate of climb slow.Effectively reduce the pressure drop of filtrate, reduce deashing number of times, cost-saving, the while can also extend the service life of filtrate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model glass and PTFE fiber blend filtrate
Fig. 2 is superfine glass fiber yarn and PTFE fibre blending yarn structural representation
1-microporous teflon membran layer, 2-polytetrafluoroethylene (PTFE) impregnation process layer, 3-glass and PTFE fiber blend varicosity layer of cloth, 4-polytetrafluoroethylene (PTFE) impregnation process layer, 5-PTFE fiber, 6-superfine glass fiber yarn.
The specific embodiment
Below in conjunction with embodiment, glass of the present utility model and PTFE fiber blend filtrate and preparation method thereof are described.
As shown in Figure 1, glass of the present utility model and PTFE fiber blend filtrate comprise by meeting knoisphere to pure qi (oxygen) layer four-layer structure, top layer (meeting knoisphere) is microporous teflon membran layer 1, the second layer is polytetrafluoroethylene (PTFE) impregnation process layer 2, the 3rd layer is glass and PTFE blending varicosity layer of cloth 3, the 4th layer is polytetrafluoroethylene (PTFE) impregnation process layer 4, and this blending media filtration precision is high, has surface filtration effect.
This filtrate top layer is smooth, fine and close microporous teflon membran, and filter type is realized " surface filtration ", be conducive to, to careful dust collection, catch dirt effect stability, thereby efficiency of seizing dust is higher than other filtering material, and dust removal efficiency reaches more than 99.995%; And the easy deashing of filtrate, running resistance only has 1/3 of traditional filtrate, and its filter efficiency and the rate of filtration significantly improve.
The filtrate second layer is the polytetrafluoroethylene (PTFE) impregnate layer forming after polytetrafluoroethylene (PTFE) impregnation process, and this layer can play bridge beam action between microporous teflon membran and PTFE web, is convenient to the combination of the two, increases overlay film firmness and durability degree.
The 3rd layer of filtrate is glass and PTFE fiber blend varicosity cloth, due to glass and PTFE fiber blend varicosity cloth acid-fast alkali-proof, high temperature resistant and water resistance, can improve the decay resistance of filtrate; Meanwhile, glass and PTFE fiber blend varicosity cloth add high-strength PTFE fiber in spinning process, and the one, play the pliability effect that strengthens scribbled; The 2nd, play the effect of reinforcement, make composite echelon filter material keep very high tensile strength, extend the service life of filtrate.
The 4th layer of the filtrate polytetrafluoroethylene (PTFE) impregnate layer for forming after polytetrafluoroethylene (PTFE) impregnation process, this layer can improve the combination properties such as the heatproof, corrosion resistant, Anti-dew of filtrate pure qi (oxygen) face; Guarantee that filter material surface is smooth simultaneously, be conducive to passing through smoothly of air-flow, reduce running resistance.
Wherein, the aperture of described microporous teflon membran layer is between 0.1 μ m-2.0 μ m.The warp thread of described glass and PTFE fiber blend varicosity layer of cloth is superfine glass fiber yarn, and weft yarn is superfine glass fiber buiky yarn and PTFE fiber and is twisted into.
The concrete preparation method of this filtrate is as follows:
(1) the superfine glass fiber yarn of superfine glass fiber single thread being separated and closed through moving back, the processes such as twisting being made respectively 56tex and 110tex is standby.
(2) the superfine glass fiber yarn of 56tex step (1) being made and the PTFE fiber of 80tex carry out and close, twist, and superfine glass fiber and the PTFE fiber blend yarn of making 136tex are standby.
(3) the 110tex superfine glass fiber yarn of step (2) being made and the PTFE fiber of 162tex carry out and close, twist, make superfine glass fiber and PTFE mixed yarn that specification is 272tex, the content of described PTFE fiber is controlled at 58wt%, and then carrying out varicosity, to be processed into superfine glass fiber and the PTFE fiber blend buiky yarn of 272tex standby.
(4) 136tex superfine glass fiber step (2) being made and PTFE mixed yarn are as warp thread, through warping, the operation such as gait, make warp shaft, the superfine glass fiber of the 272tex that employing step (3) is made and PTFE blending buiky yarn, as weft yarn, are woven into varicosity cloth on loom.
(5) glass of step (4) being made and PTFE fiber blend varicosity cloth carry out sintering processes, remove the size of superfine glass fiber remained on surface, are beneficial to rear arrangement and add man-hour, the abundant combination of dipping solution and blending varicosity cloth.
(6) after, arrange processing, the filtrate that step (5) is made is introduced in polytetrafluoroethylsolution solution dipping tank and is carried out rear arrangement processing, comprising: the operations such as impregnation process-volatilization processing-drying and processing-sintering processes-thermocompression forming-check rolling of polytetrafluoroethylsolution solution; Make 780g/m
2glass and PTFE fiber blend filtrate.Wherein impregnation process temperature is at 400 ℃, and when impregnation process temperature is when more than 300 ℃, PTFE can present semi-molten state in high temperature, and glass and PTFE fiber are bonded together.
(7) hot overlay film processing, filtrate and microporous teflon membran that step (6) is carried out after impregnation process are introduced thermal composite machine device jointly, by stretching and drawing, microporous barrier is trailed, the process high temperature of hot-rolling,, the mode of hot pressing firmly combines the polytetrafluoroethylmicroporous microporous membrane trailing and blending filtrate, is made 780g/m again
2glass and PTFE fiber blend filtrate.
The utility model media performance parameter is as following table:
Glass of the present utility model and the filter of PTFE fiber blend make up for each other's deficiencies and learn from each other glass fiber material and polytetrafluoroethylmaterial material in performance, produce cooperative effect, make the combination property of composite be better than former composition material, cost performance is higher, thereby meets the filtrating smoke dust requirement that exhaust gas components complexity, temperature are high, corrode large operating mode.
The above; it is only the preferably specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claims.
Claims (2)
1. a glass and PTFE fiber blend filtrate, it is characterized in that, by dust-collecting face, to pure qi (oxygen) face, comprise successively microporous teflon membran layer, polytetrafluoroethylene (PTFE) impregnation process layer, glass and PTFE fiber blend varicosity layer of cloth and polytetrafluoroethylene (PTFE) impregnation process layer, the aperture of described microporous teflon membran layer is between 0.2 μ m-2.0 μ m.
2. glass according to claim 1 and PTFE fiber blend filtrate, is characterized in that, the warp thread of described glass and PTFE fiber blend varicosity layer of cloth is superfine glass fiber yarn, and weft yarn is superfine glass fiber buiky yarn and PTFE and is twisted into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068762.0U CN203874574U (en) | 2014-02-14 | 2014-02-14 | Glass fiber and PTFE fiber blended filter material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420068762.0U CN203874574U (en) | 2014-02-14 | 2014-02-14 | Glass fiber and PTFE fiber blended filter material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203874574U true CN203874574U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420068762.0U Expired - Lifetime CN203874574U (en) | 2014-02-14 | 2014-02-14 | Glass fiber and PTFE fiber blended filter material |
Country Status (1)
| Country | Link |
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| CN (1) | CN203874574U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785224A (en) * | 2014-02-14 | 2014-05-14 | 营口市洪源玻纤科技有限公司 | Glass fiber and PTFE (Polytetrafluoroethylene) fiber blended filter material and preparation method thereof |
| CN104623977A (en) * | 2015-02-04 | 2015-05-20 | 辽宁鸿盛环境技术集团有限公司 | High silica fiber woven tectorial membrane filter material for coal-fired boiler and preparation method of high silica fiber woven tectorial membrane filter material |
| CN105013246A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Filtering material possessing mercury removing efficacy and preparation method thereof |
| CN105013249A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Nitre and dioxin-removal PPS composite felt functional filtering material and preparation method thereof |
| CN105013250A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Filtering material possessing desulphurization efficacy and preparation method thereof |
| CN107137999A (en) * | 2017-06-09 | 2017-09-08 | 江苏通盛滤袋有限公司 | The filter cloth that a kind of dust arrester is lost with no pressure |
-
2014
- 2014-02-14 CN CN201420068762.0U patent/CN203874574U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785224A (en) * | 2014-02-14 | 2014-05-14 | 营口市洪源玻纤科技有限公司 | Glass fiber and PTFE (Polytetrafluoroethylene) fiber blended filter material and preparation method thereof |
| CN103785224B (en) * | 2014-02-14 | 2015-09-30 | 营口市洪源玻纤科技有限公司 | Glass and PTFE fiber blend filtrate and preparation method thereof |
| CN104623977A (en) * | 2015-02-04 | 2015-05-20 | 辽宁鸿盛环境技术集团有限公司 | High silica fiber woven tectorial membrane filter material for coal-fired boiler and preparation method of high silica fiber woven tectorial membrane filter material |
| CN104623977B (en) * | 2015-02-04 | 2016-04-06 | 辽宁鸿盛环境技术集团有限公司 | The woven coated filter material of coal-burning boiler high silica fiber and preparation method |
| CN105013246A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Filtering material possessing mercury removing efficacy and preparation method thereof |
| CN105013249A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Nitre and dioxin-removal PPS composite felt functional filtering material and preparation method thereof |
| CN105013250A (en) * | 2015-07-02 | 2015-11-04 | 辽宁鸿盛环境技术集团股份有限公司 | Filtering material possessing desulphurization efficacy and preparation method thereof |
| CN105013249B (en) * | 2015-07-02 | 2017-01-11 | 辽宁鸿盛环境技术集团股份有限公司 | Nitre and dioxin-removal PPS composite felt functional filtering material and preparation method thereof |
| CN105013250B (en) * | 2015-07-02 | 2017-08-01 | 辽宁鸿盛环境技术集团股份有限公司 | A kind of filtering material with desulfurization effect and preparation method thereof |
| CN105013246B (en) * | 2015-07-02 | 2017-09-05 | 辽宁鸿盛环境技术集团股份有限公司 | A kind of filtering material with demercuration effect and preparation method thereof |
| CN107137999A (en) * | 2017-06-09 | 2017-09-08 | 江苏通盛滤袋有限公司 | The filter cloth that a kind of dust arrester is lost with no pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180110 Address after: 115004 Liaoning Province, Yingkou City West District No. 101 West Street wise Patentee after: LIAONING XINHONGYUAN ENVIRONMENTAL PROTECTION MATERIAL Co.,Ltd. Address before: 115000 Liaoning Province, Yingkou City West District No. 101 West Street wise Patentee before: YINGKOU HONGYUAN FIBERGLASS TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |