CN101732925B - Filter material in heating ventilation air conditioning, purifying and dedusting equipment, preparation method thereof and application - Google Patents
Filter material in heating ventilation air conditioning, purifying and dedusting equipment, preparation method thereof and application Download PDFInfo
- Publication number
- CN101732925B CN101732925B CN 201010100532 CN201010100532A CN101732925B CN 101732925 B CN101732925 B CN 101732925B CN 201010100532 CN201010100532 CN 201010100532 CN 201010100532 A CN201010100532 A CN 201010100532A CN 101732925 B CN101732925 B CN 101732925B
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- China
- Prior art keywords
- base cloth
- layer
- air conditioning
- fire resistance
- filtrate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004378 air conditioning Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 title claims abstract description 26
- 238000009423 ventilation Methods 0.000 title claims abstract description 24
- 239000000463 material Substances 0.000 title claims abstract description 17
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000000835 fiber Substances 0.000 claims abstract description 70
- 239000004744 fabric Substances 0.000 claims abstract description 60
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000009940 knitting Methods 0.000 claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 238000007598 dipping method Methods 0.000 claims abstract description 6
- 239000003063 flame retardant Substances 0.000 claims abstract description 6
- 238000005245 sintering Methods 0.000 claims abstract description 4
- 239000000706 filtrate Substances 0.000 claims description 40
- 239000000428 dust Substances 0.000 claims description 14
- 239000002002 slurry Substances 0.000 claims description 8
- 238000005299 abrasion Methods 0.000 claims description 7
- 230000002155 anti-virotic effect Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 230000001954 sterilising effect Effects 0.000 claims description 7
- 235000019506 cigar Nutrition 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000004519 grease Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 239000004753 textile Substances 0.000 claims description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 239000000839 emulsion Substances 0.000 claims description 3
- 229910052731 fluorine Inorganic materials 0.000 claims description 3
- 239000011737 fluorine Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229920000058 polyacrylate Polymers 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920002972 Acrylic fiber Polymers 0.000 claims description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims 1
- 238000002513 implantation Methods 0.000 claims 1
- 239000000047 product Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 abstract 4
- 239000006255 coating slurry Substances 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 3
- 238000001467 acupuncture Methods 0.000 description 2
- 229940072049 amyl acetate Drugs 0.000 description 2
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 2
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229920004933 Terylene® Polymers 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 238000004380 ashing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Landscapes
- Filtering Materials (AREA)
Abstract
The invention relates to a filter material in heating ventilation air conditioning, purifying and dedusting equipment. After velvets are uniformly planted on the surfaces of a base fabric, a bottom velvet layer and a surface velvet layer are formed, wherein the thickness of the base fabric is 0.25-0.35mm; the diameter of flame retardant fibers of the surface velvet layer is 0.25-0.35mm; both the surface velvet layer and the bottom velvet layer are formed by the flame retardant fibers; the fiber diameter of the surface velvet layer is 2.5-3.5d, and the length of the fibers is 7-16mm; the fiber diameter of the bottom velvet layer is 1.2-2.0d; the ratio of fiber quantities in the surface velvet layer and the bottom velvet layer is 1:1.2; and the density of the filter material is 450-500g/m<2>. A preparation method comprises the following steps of: knitting the flame retardant fibers to form the base fabric; sequentially and uniformly planting bottom velvets and surface velvets on the front face of the base fabric by a kitting method so as to form the bottom velvet layer and the surface velvet layer with different heights; sintering and cleaning the flame retardant fibers exposed out of the back face of the base fabric; dipping by using a treating agent and coating slurry on the back of the base fabric; and finally, roasting and sizing to form the filter material in the heating ventilation air conditioning, purifying and dedusting equipment.
Description
Technical field
The present invention relates to filtrate in a kind of heating ventilation air conditioning, purifying cleaner and its preparation method and application.
Background technology
At present, used filtrate is generally elementary, middle and high, the inferior efficiently terylene filter felt of glass fiber filter cloth, polyester fiber filter cloth (filter core) and the acupuncture of papery in the heating ventilation air conditioning, purifying cleaner that the public place of the more use central air-conditioning of mud dirt such as large-scale building, hospital, airport, textile mills, chemical fibre factory, cigar mill, paper mill and fiber dust uses.These paperys and needling fiber filtrate defective are that the air-flow running resistance is higher, and efficiency of dust collection is lower, and can't control effectively to this.Filtrate tensile strength is poor, easy to wear simultaneously, does not find stable, effective purge mode as yet.Present normally used purge mode mainly contains two kinds of air pulse deashing and negative pressure ashing suction nozzles, but owing to reasons such as the tensile strength of filtrate are relatively poor, the filter efficiency of filtrate reduces greatly in actual the use.
Summary of the invention
The objective of the invention is to, at mud dirt such as present large-scale building, hospital, airport, textile mills, chemical fibre factory, cigar mill, paper mills with fiber dust is more and the air dust content is less than or equal to 200mgN/m
3The dust removal by ventilation equipment that uses of public place in the problem that exists of used filtrate, a kind of new heating ventilation air conditioning, purifying dedusting filtrate and its preparation method and application is provided.
The object of the present invention is achieved like this: the filtrate in a kind of heating ventilation air conditioning, purifying cleaner, it is characterized in that: the under hair layer with differing heights that after the even flocking in the surface of base cloth, forms and table suede layer, described base cloth is by the fire resistance fibre looped fabric, the thickness of base cloth is 0.25～0.35mm, table suede layer and under hair layer are fire resistance fibre, the fire resistance fibre diameter of table suede layer is 2.5～3.5d, length is 7～16mm, the fire resistance fibre diameter of under hair layer is 1.2～2.0d, length is 2～5mm, table suede layer is 1: 1.2 with fiber number ratio in the under hair layer, and being prepared into back filtrate density is 450～500g/m
2Air conditioning purge dedusting filtrate can waterproof and oilproof, antistatic, sterilizing and anti-virus and anti-corrosion abrasion-resistant, can be wherein a kind of, also can be wherein several.
In the present invention: table suede layer and under hair layer adopt and the fire resistance fibre of base cloth with material, a kind of in the polyster fibre handled through fire-retardant for fibre, acrylic fiber, the polytetrafluoroethylene fibre of described fire resistance fibre.
In the present invention: the fire resistance fibre diameter of knitting base cloth is 3.8d, and the base cloth grammes per square metre is 200g/m
2, described under hair is curling shape.
In the present invention: the under hair layer is 1: 2.5 with the vertical height ratio at table suede layer top.
Filtrate preparation method in the above-mentioned heating ventilation air conditioning, purifying cleaner is characterized in that: with the knitting formation base cloth of fire resistance fibre; Earlier evenly plant under hair with knitting in the front of base cloth, evenly plant again with knitting in the base cloth front that is implanted with under hair then and show suede, form under hair layer and table suede layer with differing heights; The fire resistance fibre sintering cleaning at the base cloth back side will be exposed to after the flocking; With the inorganic agent dipping, be coated with slurry at the base cloth back side again; Bake and finalize the design at stentering forming equipment at last, 90～125 ℃ of baking temperatures form the filtrate in the heating ventilation air conditioning, purifying cleaner.
In preparation method of the present invention: the fire resistance fibre diameter of knitting base cloth is 3.8d, and the thickness of base cloth is 0.25～0.35mm, and grammes per square metre is 200g/m
2The fire resistance fibre diameter of table suede layer is 2.5～3.5d, length is 7～16mm, the fire resistance fibre diameter of under hair layer is 1.2～2.0d, length is 2～5mm, table suede layer is 1: 1.2 with fiber number ratio in the under hair layer, the under hair layer is 1: 2.5 with the vertical height ratio at table suede layer top, and being prepared into back filtrate density is 450～500g/m
2Slurry in the brushing of the base cloth back side is the mixture of amyl acetate converted starch and water.
In preparation method of the present invention: base cloth, table suede layer and under hair layer are the fire resistance fibre with material, and described Waterproof, grease proof treating compound is organic fluorine, and described antistatic treatment agent is polyacrylate, and described sterilizing and anti-virus inorganic agent is nanometer Al
2O
3-Si
2-TiO
2-ZnO material, described anti-corrosion abrasion-resistant inorganic agent is ptfe emulsion.
In preparation method of the present invention: when the diameter of under hair layer fire resistance fibre greater than 1.8d, earlier with several roll boiling hot press of fire resistance fibre in heating, surface comb is cut the back and is formed the shape that curls, and then forms the under hair layer with the knitting front that the fire resistance fibre of shape evenly is implanted in base cloth of will curling.
The application of the filtrate in a kind of above-mentioned heating ventilation air conditioning, purifying cleaner is characterized in that: be applicable to that the dust-laden material is mud dirt and fiber dust in the gas, gas temperature is less than or equal to 150 ℃, and relative humidity is 50～85%, handles air quantity and is less than or equal to 15000m
3/ h, filtration velocity is less than or equal to 0.3m/s, and dust content is less than or equal to 200mg/Nm
3Large-scale building, hospital, airport and textile mills, chemical fibre factory, cigar mill, paper mill etc. use in the heating ventilation air conditioning, purifying cleaner that the public place ventilating and purifying air system of central air-conditioning uses.
In an application of the invention: described public place is: the more place of central air-conditioning is used in large-scale building, hospital, airport, textile mills, chemical fibre factory, cigar mill, paper mill etc.
The invention has the advantages that: because the weight per unit area of base cloth is 200g/m
2, make its porosity higher, woven and non-woven filtrate is low by 30% at least so the lint density of filter material surface is than other, and permeability is high by 30% at least, and filtration resistance is low by 30% at least, and specific energy consumption is lower than other class filtrate 30% at least; Because base cloth adopts the fire resistance fibre looped fabric, shows suede and under hair simultaneously and is and the fire resistance fibre of base cloth with material, can guarantee that filtrate uses safely under higher temperature environment; Owing to evenly be implanted with table suede and under hair on the surface of base cloth, in the air cleaning processing procedure, long table suede can capture more grit, and the under hair that is the shape that curls and dirt body converge new filter course of back formation; Because in preparation process, be coated with slurry at the base cloth back side, after baking and finalizing the design, can prevent that base cloth from deforming in using, and increases the tensile strength of filtrate; Dipping functional processing agent in preparation process can be given filtrate and have dedusting new function in addition in particular environment.
The specific embodiment
Embodiment 1
Base cloth: thickness is 0.25～0.35mm, is formed by the knitting back of fire resistance fibre, and the fire resistance fibre diameter of knitting base cloth is 3.8d, and the grammes per square metre of base cloth is 200g/m
2
Table suede: adopt the fire resistance fibre with the identical material of base cloth, the diameter of fiber is 2.5～3.5d, and length is 7～16mm.
Under hair: adopt the fire resistance fibre with the identical material of base cloth, the diameter of fiber is 1.2～2.0d, and length is 2～5mm.
The preparation method
Earlier evenly plant under hair with knitting in the front of base cloth; Evenly plant with knitting in the front of the base cloth that is implanted with under hair more again and show suede, form under hair layer and table suede layer with differing heights, wherein, the fiber number ratio in table suede layer and the under hair layer is 1: 1.2, and being prepared into back filtrate density is 450～500g/m
2
The fire resistance fibre sintering cleaning at the base cloth back side will be exposed to after the flocking; Again with inorganic agent dipping, inorganic agent can select one or partly or entirely select Waterproof, grease proof treating compound commonly used, or antistatic treatment agent, or the sterilizing and anti-virus inorganic agent, or the anti-corrosion abrasion-resistant inorganic agent; Be coated with slurry at the base cloth back side, the slurry of brushing at the base cloth back side is the mixture of amyl acetate converted starch and water.
The base cloth that the back side is coated with slurry bakes and finalizes the design at stentering forming equipment, and 90～125 ℃ of baking temperatures form the filtrate in the heating ventilation air conditioning, purifying cleaner at last.
During concrete enforcement, if if the fire resistance fibre diameter of under hair layer less (diameter is less than 1.8d) can be heated in the cleaner running and from line bend, need not be processed into bending flocking again; Press and the surface comb is cut and formed curling shape and normally scald at several roll of heating for the fire resistance fibre of diameter big (diameter is less than 1.8d), and then form the under hair layer with the knitting front that the fire resistance fibre of shape evenly is implanted in base cloth of will curling; Filtrate can basis instructions for use different in preparation process, select different inorganic agents, for example, described Waterproof, grease proof treating compound is selected organic fluorine, and described antistatic treatment agent can be selected polyacrylate, and described sterilizing and anti-virus inorganic agent can be selected nanometer Al
2O
3-Si
2-TiO
2-ZnO material, described anti-corrosion abrasion-resistant inorganic agent can be selected ptfe emulsion.
Embodiment 2
Flat dedusting unit, cartridge type dedusting unit, honeycomb fashion dedusting unit are the present and matching used purification combined type dedusting units commonly used of HVAC of China, and they are mainly used in the air cleaning that the public place dust pelletizing system of central air-conditioning is used in large-scale building, hospital, airport and textile mills, chemical fibre factory, cigar mill, paper mill etc.Filtrate in the heating ventilation air conditioning, purifying cleaner that embodiment 1 obtains can be according to the unit of different structure and different model, and flexible Application is in described unit.Specifically, can be according to the actual conditions of unit, after cutting into different size, covering is fixed on the flat metal screen surface of flat dedusting unit, or covering is fixed on a plurality of tubbiness metal screens surface, or cut the block that is rolled into different size, be installed in the honeycomb fashion dedusting unit after being sewn into tubular.
Embodiment 3
In flat dedusting unit, compare test
Unit model: BCA300-5 (production of distant place environmental protection equipment factory of China Aviation Testing ﹠ Research Inst.)
At air dust content 150mg/Nm
3, in the simulated test room of relative humidity 65%, the dedusting unit is installed traditional papery and the new filtrate of acupuncture, and electric heating enters the gas temperature control of dedusting unit at 150 ℃, and filtration velocity is 0.1m/s, the air dust content 3-4mg/m of equipment work after 1 hour
3, air-flow is 140Pa-150Pa by the negative pressure value of filtrate; Under equal experimental condition, be replaced by the filtrate of embodiment 1, the air dust content is at 1～3mg/m under equal experimental condition
3, air-flow by filtrate negative pressure value be 95Pa-105Pa.As seen, dust removing effects of the present invention and power consumption situation obviously are better than traditional filtrate.
More than each embodiment be not to concrete restriction of the present invention.
Claims (6)
1. the filtrate in the heating ventilation air conditioning, purifying cleaner, it is characterized in that: the under hair layer with differing heights that after the even flocking in the surface of base cloth, forms and table suede layer, described base cloth is the fire resistance fibre looped fabric, the thickness of base cloth is 0.25～0.35mm, table suede layer and under hair layer are fire resistance fibre, the fire resistance fibre diameter of table suede layer is 2.5～3.5d, length is 7～16mm, the fire resistance fibre diameter of under hair layer is 1.8～2.0d, length is 2～5mm, table suede layer is 1: 1.2 with fiber number ratio in the under hair layer, and the density of finished product filtrate is 450～500g/m
2At least contain Waterproof, grease proof treating compound in the air conditioning purge dedusting filtrate, or antistatic treatment agent, or the sterilizing and anti-virus inorganic agent, or a kind of dipping in the anti-corrosion abrasion-resistant inorganic agent is residual;
Table suede layer and under hair layer adopt and the fire resistance fibre of base cloth with material, a kind of in the polyster fibre handled through fire-retardant for fibre, acrylic fiber, the polytetrafluoroethylene fibre of described fire resistance fibre;
The fire resistance fibre diameter of knitting base cloth is 3.8d, and the base cloth grammes per square metre is 200g/m
2, the under hair layer curls and handles back implantation base cloth.
2. the filtrate in the heating ventilation air conditioning, purifying cleaner according to claim 1 is characterized in that: the under hair layer is 1: 2.5 with the top vertical height ratio of table suede layer.
3. the preparation method as the filtrate in the heating ventilation air conditioning, purifying cleaner as described in one of claim 1～2 is characterized in that: with the knitting formation base cloth of fire resistance fibre; Earlier evenly plant under hair with knitting in the front of base cloth, evenly plant with knitting again in the base cloth front that is implanted with under hair then and show suede, form under hair layer and table suede layer with differing heights; The fire resistance fibre sintering cleaning at the base cloth back side will be exposed to after the flocking; With the inorganic agent dipping, be coated with slurry at the base cloth back side again; Bake and finalize the design at stentering forming equipment at last, 90～125 ℃ of baking temperatures form the filtrate in the heating ventilation air conditioning, purifying cleaner;
Inorganic agent is Waterproof, grease proof treating compound, or antistatic treatment agent, or the sterilizing and anti-virus inorganic agent, or the anti-corrosion abrasion-resistant inorganic agent, or their combination; Slurry in the brushing of the base cloth back side is the mixture of acetate converted starch and water;
Earlier under hair layer fire resistance fibre scalded at several roll of heating and press, the surface comb is cut the back and is formed the shape that curls, and then forms the under hair layer with the knitting front that the fire resistance fibre of shape evenly is implanted in base cloth of will curling.
4. the preparation method of the filtrate in the heating ventilation air conditioning, purifying cleaner according to claim 3, it is characterized in that: base cloth, table suede layer and under hair layer are the fire resistance fibre with material, described Waterproof, grease proof treating compound is organic fluorine, described antistatic treatment agent is polyacrylate, and described sterilizing and anti-virus inorganic agent is nanometer Al
2O
2-Ti
2-ZnO material, described anti-corrosion abrasion-resistant inorganic agent is ptfe emulsion.
5. application as the filtrate in the heating ventilation air conditioning, purifying cleaner as described in one of claim 1～2, it is characterized in that: filtrate is cut be rolled into tubular or block, being used for gas dust-laden material is mud dirt and fiber dust, gas temperature is less than or equal to 150 ℃, relative humidity is 50～85%, handles air quantity and is less than or equal to 15000m
3/ h, filtration velocity is less than or equal to 0.3m/s, and dust content is less than or equal to 200mg/Nm
3The heavily contaminated workshop or the heating ventilation air conditioning, purifying cleaner that uses of the high public place of flow of the people in.
6. the application of the filtrate in the heating ventilation air conditioning, purifying cleaner according to claim 5, it is characterized in that: the heavily contaminated workshop refers to the workshop in textile mills or chemical fibre factory or cigar mill or paper mill, and the public place that flow of the people is high refers to large-scale building or megastore or hospital or airport or cinema; Described heating ventilation air conditioning, purifying cleaner is flat dedusting unit, or honeycomb fashion dedusting unit, or multi-cartridge dedusting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010100532 CN101732925B (en) | 2010-01-25 | 2010-01-25 | Filter material in heating ventilation air conditioning, purifying and dedusting equipment, preparation method thereof and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010100532 CN101732925B (en) | 2010-01-25 | 2010-01-25 | Filter material in heating ventilation air conditioning, purifying and dedusting equipment, preparation method thereof and application |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101732925A CN101732925A (en) | 2010-06-16 |
| CN101732925B true CN101732925B (en) | 2013-08-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010100532 Expired - Fee Related CN101732925B (en) | 2010-01-25 | 2010-01-25 | Filter material in heating ventilation air conditioning, purifying and dedusting equipment, preparation method thereof and application |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111127B (en) * | 2013-03-01 | 2014-09-03 | 江苏物联网研究发展中心 | PM 2.5 filtration structure and preparation method thereof |
| CN108159788A (en) * | 2017-12-05 | 2018-06-15 | 江苏菲特滤料有限公司 | A kind of preparation method of air conditioning filter filtrate |
| CN110614786A (en) * | 2018-06-19 | 2019-12-27 | 奇鼎科技股份有限公司 | Method for manufacturing water spraying plate |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0162645A1 (en) * | 1984-05-11 | 1985-11-27 | Masami Harada | Carbon-fiber-covered material |
| CN1077412A (en) * | 1992-04-18 | 1993-10-20 | 洪重光 | Production technology and equipment of polytetrafluoroethylene fiber filtering material |
| CN1129681C (en) * | 1999-01-19 | 2003-12-03 | 东洋纺织株式会社 | Flame-retardant polyester fiber, woven or knitted flame-retardant polyester fiber fabric, nonwoven flame-retardant polyester fiber fabric, and woven or knitted suede fabric |
| CN2737452Y (en) * | 2004-07-22 | 2005-11-02 | 武汉市健康泽民科技有限公司 | Composite strucure filtering cloth for purified fluid |
| CN101275773A (en) * | 2008-05-13 | 2008-10-01 | 上海恒泓家电配件有限公司 | Air conditioner filter screen containing fluorine element coating and preparing method thereof |
-
2010
- 2010-01-25 CN CN 201010100532 patent/CN101732925B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0162645A1 (en) * | 1984-05-11 | 1985-11-27 | Masami Harada | Carbon-fiber-covered material |
| CN1077412A (en) * | 1992-04-18 | 1993-10-20 | 洪重光 | Production technology and equipment of polytetrafluoroethylene fiber filtering material |
| CN1129681C (en) * | 1999-01-19 | 2003-12-03 | 东洋纺织株式会社 | Flame-retardant polyester fiber, woven or knitted flame-retardant polyester fiber fabric, nonwoven flame-retardant polyester fiber fabric, and woven or knitted suede fabric |
| CN2737452Y (en) * | 2004-07-22 | 2005-11-02 | 武汉市健康泽民科技有限公司 | Composite strucure filtering cloth for purified fluid |
| CN101275773A (en) * | 2008-05-13 | 2008-10-01 | 上海恒泓家电配件有限公司 | Air conditioner filter screen containing fluorine element coating and preparing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP昭55-39207A 1980.03.19 |
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| CN101732925A (en) | 2010-06-16 |
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