CN104357998A - Filtering cloth applied to high-purity extraction in pharmaceutical industry and weaving method of filtering cloth - Google Patents
Filtering cloth applied to high-purity extraction in pharmaceutical industry and weaving method of filtering cloth Download PDFInfo
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- CN104357998A CN104357998A CN201410429906.5A CN201410429906A CN104357998A CN 104357998 A CN104357998 A CN 104357998A CN 201410429906 A CN201410429906 A CN 201410429906A CN 104357998 A CN104357998 A CN 104357998A
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- filter cloth
- pharmaceutical industry
- purity
- polypropylene fibre
- twill
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D15/00—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
- D03D15/40—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads
- D03D15/44—Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used characterised by the structure of the yarns or threads with specific cross-section or surface shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
- B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D13/00—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft
- D03D13/008—Woven fabrics characterised by the special disposition of the warp or weft threads, e.g. with curved weft threads, with discontinuous warp threads, with diagonal warp or weft characterised by weave density or surface weight
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06C—FINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
- D06C7/00—Heating or cooling textile fabrics
- D06C7/02—Setting
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/02—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins
- D10B2321/022—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polyolefins polypropylene
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2505/00—Industrial
- D10B2505/04—Filters
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Woven Fabrics (AREA)
Abstract
The invention discloses filtering cloth applied to high-purity extraction in the pharmaceutical industry. The multifilament of the filtering cloth adopts superfine denier multi-hole polypropylene multifilament, and the filter cloth is obtained by weaving warps and latitudes, and carrying out high-temperature instantaneous polymerization surface treatment with a calender; the texture structure of the filtering cloth is one of tabby, twill, satin or one of all multiple cloth structures; the high-temperature range of the filtering cloth is 120 to 220 DEG C. The filtering cloth has the advantages of being high in interception precision, favorable in filter cake stripping capability, excellent in acid resistance and alkali resistance, relative high in hydrophobicity, high in reproducibility and the like. The invention further discloses a weaving method of the filtering cloth.
Description
Technical field
The present invention relates to a kind of filter cloth and the weaving method thereof that are applied to the extraction of pharmaceutical industry high-purity.
Background technology
Medicine industry is the important component part of Chinese national economy, and its main class comprises: medicinal chemicals and preparation, Chinese medicine, the prepared slices of Chinese crude drugs, Chinese patent drug, antibiotic, biological products, biochemical drug, radioactive drugs, medicine equipment, hygienic material, pharmaceutical machine, acceptable packaging material and pharmaceutical business.Pharmaceutical industry is for protection and promote people ' s health, improve the quality of living, for family planning, disaster relief epidemic prevention, military supplies war preparedness and to promote economic development and social progress all has a very important role.
Along with carrying out of new round medical system reform, within 2007, rise, Chinese pharmaceutical industry enters new developing stage.Although China is about to become global the third-largest drug market, still there is many deficiencies in pharmaceutical industry: industry size is large but concentration degree is low, production of raw medicine is competitive but high added value formulation products shortage, innovation deficiency etc.
Pharmacy industry belongs to process industry, and workflow industry belongs to process manufacturing industry.The manufacturing management of process has oneself feature.Process manufacturing industry mainly through mixing raw material, being separated, pulverize, physics or the chemical method such as heating, raw material are rised in value.Usually, produce with batch or continuous print mode, produce with discrete type and compare, process industry has many-sided particularity.In manufacturing technology, to continually develop high efficiency, high yield, high automation, multi-functional, continuously airtight, meet the various drugs manufacture equipment that GMP (GMP) requires, so when continuous seepage high-quality product in enormous quantities, have and meet the quality of production and to require and the supporting filter cloth of higher rejection just seems particularly important, simultaneously also require filter cloth to possess reproducibility is good, filter cloth surface residue is few feature.
Pharmaceutical industry now uses filter cloth mainly to there is following defect: filter cloth to material to retain precision inadequate, the reproducibility of filter cloth is poor, filter cake fissility difference etc., simultaneously the also external filter cloth of main dependence.
Summary of the invention
For solving the technical problem that existing filter cloth exists, the object of the invention is to provide a kind of filter cloth and the weaving method thereof that are applied to the extraction of pharmaceutical industry high-purity, and this filter cloth has height and retains precision, good filter cake fissility, excellent acid-fast alkali-proof, the preferably advantage such as hydrophobicity, good reproducibility.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of filter cloth being applied to pharmaceutical industry high-purity and extracting, it is characterized in that, the multifilament of filter cloth adopts super fine denier number porous polypropylene fibre multifilament, after this filter cloth is weaved by warp and parallel, carry out high-temperature instantaneous polymeric surface treatment process through calender to make, the texture structure of filter cloth is any one in plain weave, twill, satin weave or all multiply cloth structures, and described hyperthermia temperature range is 120 ~ 220 DEG C.
Wherein, described polypropylene fibre multifilament adopts FDY super fine denier number porous polypropylene fibre long fine, and single fiber is no more than 3 D.
Wherein, single Shu Fusi hole count is 240-1200 hole.
Wherein, the line density of polypropylene fibre multifilament is 300-4000 D.
Wherein, the twist of polypropylene fibre list Shu Fusi is not less than 200 twists/m.
Wherein, on polypropylene fibre multifilament, machine warp-wise density is 200-1000 root/10cm.
Wherein, described filter cloth is multiply cloth structure, multiply cloth texture is the combination of top layer 3/1 twill and nexine 1/3 twill, or the combination of line and nexine 2/2 twill is forged on top layer 4/1, or the combination of line and nexine 3/1 twill is forged on top layer 4/1, or the combination of top layer 1/1 plain weave and nexine 3/1 twill.
Wherein, described filter cloth texture is 2/2 twill, and being interweaved by longitude and latitude node is formed by connecting.
The present invention discloses a kind of weaving method being applied to the filter cloth that pharmaceutical industry high-purity is extracted simultaneously, it is characterized in that, mainly comprises the following steps:
(1) the application operating mode extracted according to pharmaceutical industry high-purity selects super fine denier number porous polypropylene fibre multifilament;
(2) super fine denier number porous polypropylene fibre multifilament is added the super large twist, by yarn steaming process by polypropylene fibre multifilament pre-setting, stablize yarn twist;
(3) be wound in warp beam according to design density by the single even tension of polypropylene fibre multifilament complete for preliminary treatment, single tension force is at 100 ~ 150cN, and single tension force must ensure unanimously, and single tension error is no more than 1cN, to ensure the definitely smooth of following fabric;
(4) weave, this weaves employing hightension, and single warp tension is not less than 300 ± 1 cN;
(5) carry out HEAT SETTING process to filter screen, stable dimensions, described temperature range is 120-170 DEG C;
(6) filter screen is carried out the process of surface high-temp instantaneous polymerization, by flat for longitude and latitude node processing, described high temperature range is 120-220 DEG C.
Compared with prior art, the present invention has following beneficial effect:
The polypropylene fibre filter cloth of use super fine denier number porous multifilament adds the perforate number in filter cloth unit are to greatest extent, namely effective filter area is added, this measure not only adds filter cloth and retains precision to particle, opened abundant filtration duct, ensure that has sufficiently high discharge opeing speed while high rejection simultaneously;
By the filter cloth fabric structure after high-temperature instantaneous polymerization process, not only there is firmly DIMENSIONAL STABILITY, avoid in use repeatedly stressed and filter cloth that is that cause relaxes, and decrease material particles remaining on filter cloth, and the fissility of filter cake is fine.
Accompanying drawing explanation
Fig. 1 is that filter cloth fabric of the present invention adopts 2/2 twill texture front Electronic Speculum enlarged drawing;
Fig. 2 is that filter cloth fabric of the present invention adopts 2/2 twill texture reverse side Electronic Speculum enlarged drawing.
Detailed description of the invention
By describing technology contents of the present invention, structural feature in detail, realized object and effect, accompanying drawing is coordinated to be explained in detail below in conjunction with embodiment.
Refer to Fig. 1 and Fig. 2, the filter cloth fabric being applied to the extraction of pharmaceutical industry high-purity for the present invention adopts 2/2 twill texture front and reverse side Electronic Speculum enlarged drawing.A kind of filter cloth being applied to pharmaceutical industry high-purity and extracting, the multifilament of filter cloth adopts super fine denier number porous polypropylene fibre multifilament, after this filter cloth is weaved by warp and parallel, carry out high-temperature instantaneous polymeric surface treatment process through calender to make, the texture structure of filter cloth is any one in plain weave, twill, satin weave or all multiply cloth structures, and described hyperthermia temperature range is 120 ~ 220 DEG C.
Comparing existing filter cloth adopts normal polypropylene material to there is the larger and shortcoming that hole count is less of fiber Denier, the polypropylene fibre filter cloth of super fine denier number porous polypropylene fibre multifilament of the present invention adds the perforate number in filter cloth unit are to greatest extent, namely effective filter area is added, which not only adds the dam precision of filter cloth to particle, open abundant filtration duct simultaneously, while ensure that high interception capacity, have abundant discharge opeing speed.
As preferred embodiment, polypropylene fibre multifilament adopts FDY super fine denier number porous polypropylene fibre long fine, and single fiber is no more than 3 D; Further, single Shu Fusi hole count is preferably 240-1200 hole; The line density of polypropylene fibre multifilament is preferably 300-4000 D.
As a kind of embodiment, the twist of polypropylene fibre list Shu Fusi is not less than 200 twists/m; On polypropylene fibre multifilament, machine warp-wise density is 200-1000 root/10cm.
In the present invention, grain design is applicable to plain weave, twill, satin weave and all fabric constructions.Plain weave, twill, satin weave are the basic textures of three foundation weave, and belong to woven structure, plain weave is the finest and close, but its hole easily blocks, and filter cake is also slightly difficult to be peeled off; The intensity of twill-weave is the highest, and micropore not easily blocks, and flow is large; Satin weave is concentrated because of its vertical silk and is prepared, and filter cake fissility is good, but particle capturing ability is poor.Multiply cloth structure is the combination of three foundation weave, belongs to two-layer and two-layer above fabric.
As preferred embodiment, filter cloth texture is multiply cloth structure, it can be the combination of top layer 3/1 twill and nexine 1/3 twill, or the combination of line and nexine 2/2 twill is forged on top layer 4/1, it can be the combination that line and nexine 3/1 twill are forged in top layer 4/1, also can be the combination etc. of top layer 1/1 plain weave and nexine 3/1 twill, be not limited thereto.Different combination textures and different graticule proportionings can reach different and retain precision, can be applied to different industries, as petrochemical industry, fine chemistry industry, coloured and rare metal etc.
As preferably embodiment, filter cloth texture is 2/2 twill, and being interweaved by longitude and latitude node is formed by connecting, as depicted in figs. 1 and 2.
In the present invention, polypropylene fibre filter cloth surface high-temperature instantaneous polymerization process refers to filter cloth surface first through preheating, again through being full of the calender of high temperature, high pressure, filter cloth surface is rapidly heated to the melting critical-temperature of filter cloth materials, the process flatness of filter cloth surface and the longitude and latitude node of filter cloth; Temperature ranges is 120-220 degree Celsius.
The present invention discloses a kind of weaving method being applied to the filter cloth that pharmaceutical industry high-purity is extracted simultaneously, mainly comprises the following steps:
(1) the application operating mode extracted according to pharmaceutical industry high-purity selects super fine denier number porous polypropylene fibre multifilament;
(2) super fine denier number porous polypropylene fibre multifilament is added the super large twist, by yarn steaming process by polypropylene fibre multifilament pre-setting, stablize yarn twist;
(3) be wound in warp beam according to design density by the single even tension of polypropylene fibre multifilament complete for preliminary treatment, single tension force is at 100 ~ 150cN, and single tension force must ensure unanimously, and single tension error is no more than 1cN, to ensure the definitely smooth of following fabric;
(4) weave, this weaves employing hightension, and single warp tension is not less than 300 ± 1 cN;
(5) carry out HEAT SETTING process to filter screen, stable dimensions, described temperature range is 120-170 DEG C;
(6) filter screen is carried out the process of surface high-temp instantaneous polymerization, by flat for longitude and latitude node processing, described high temperature range is 120-220 DEG C.
In step (1), to require according to filter cloth application operating mode, application, application purpose, select graticule material, wire diameter, mainly refer to the pH value according to operating mode, use type, precision of damming, the selection such as filter cake peeling effect requirement.Ultra-fine retain precision, the rejection of superelevation requires the yarn of selecting line density little, select super fine denier number porous polypropylene fibre multifilament in the present invention, utilize individual filaments fiber finer, the feature that single Shu Fusi hole count is many, increase the perforate number in filter cloth unit are to greatest extent, namely add effective filter area, this measure not only adds the dam precision of filter cloth to particle, open abundant filtration duct simultaneously, there is while ensure that high rejection sufficiently high discharge opeing speed.
In step (5), sizing refer to by the process of certain physics or chemistry eliminate accumulate in filter cloth stress, strain, the form making it obtain certain in state, size or structure to need, and reach certain stability.HEAT SETTING refers to that filter cloth is heat-treated under some tension, makes its size, the processing technology of form stable.Its meaning is 1. size setting: dimensional stability improves, and washing shrinkage declines; 2. flat set: eliminate fine wrinkle, improves wrinkle resistance; 3. improve the internal performance of filter cloth: the degree of crystallinity of monofilament, intensity, filter cloth breathed freely, the improvement of thickness, application performance etc.The sizing of this filter cloth is HEAT SETTING, temperature range 120 DEG C-170 DEG C.
The object of sizing arranges filter cloth wire side, in weaving process, filter cloth also exists internal stress, and this is that the stress caused because of equipment, material etc. when weaving is inconsistent because the tension force of warping local is irregular, these can make the grey cloth wire side out-of-flatness after lower machine, need arrange by sizing.
In step (6), polypropylene fibre filter cloth surface high-temperature instantaneous polymerization process refers to filter cloth surface first through preheating, again through being full of the calender of high temperature, high pressure, filter cloth surface is rapidly heated to the melting critical-temperature of filter cloth materials, the process flatness of filter cloth surface and the longitude and latitude node of filter cloth; Temperature ranges is 120-220 degree Celsius.The material molten of screen surface is polymerized by high temperature, pressing, ensures the flatness of wire side, makes filter screen have good filter cake fissility, can accomplish automatic cake discharging, and screen surface is residual less simultaneously, can extend the cleaning frequency.
As a kind of concrete weaving mode, concrete weaving method comprises the following steps:
The twist of 200-300 twist/m is added with above-described super fine denier number porous 600D polypropylene fibre multifilament, be wound up in warp beam by single for multifilament even tension after yarn steaming process, single tension force is at 100-150cN, uniform tension in order must be ensured simultaneously, single tension error is no more than 1cN, to ensure the definitely smooth of following fabric;
Filter cloth is used 2/2 twill weave structures, upper machine through close be 400-450 root/10cm, on machine, filling density is that 80-150 root/10cm weaves, and grey cloth is breathed freely as 20-60 L/m2.s@200 Pa; Then by the process of filter cloth HEAT SETTING, stable dimensions, simultaneously by filter cloth surface high-temperature instantaneous polymerization process, by flat for longitude and latitude node processing, after process, the air permeability of finished product filter cloth is 0.5-8 L/m2.s@200 Pa.
By the filter cloth that this technology makes, the production for certain pharmaceutical factory's board and frame machine domestic is filtered, and material average grain 0.5 μm, rejection is 99%, and the moisture content of filter cake is lower than 18%, and result of use is good.
Filter cloth of the present invention has very high particle entrapment precision, effectively can improve quality and the recovery rate of product in the application of pharmaceutical industry, and good permeability rate and the easy fissility of splendid filter cake, can ensure high efficiency and the stability of device fabrication.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (9)
1. the filter cloth being applied to pharmaceutical industry high-purity and extracting, it is characterized in that, the multifilament of filter cloth adopts super fine denier number porous polypropylene fibre multifilament, after this filter cloth is weaved by warp and parallel, carry out high-temperature instantaneous polymeric surface treatment process through calender to make, the texture structure of filter cloth is any one in plain weave, twill, satin weave or all multiply cloth structures, and described hyperthermia temperature range is 120 ~ 220 DEG C.
2. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 1, is characterized in that, described polypropylene fibre multifilament adopts FDY super fine denier number porous polypropylene fibre long fine, and single fiber is no more than 3 D.
3. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 1 and 2, it is characterized in that, single Shu Fusi hole count is 240-1200 hole.
4. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 1 and 2, it is characterized in that, the line density of polypropylene fibre multifilament is 300-4000 D.
5. the filter cloth being applied to the extraction of pharmaceutical industry high-purity according to any one of claim 1 ~ 4, it is characterized in that, the twist of polypropylene fibre list Shu Fusi is not less than 200 twists/m.
6. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 5, it is characterized in that, on polypropylene fibre multifilament, machine warp-wise density is 200-1000 root/10cm.
7. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 1, it is characterized in that, described filter cloth is multiply cloth structure, multiply cloth texture is the combination of top layer 3/1 twill and nexine 1/3 twill, or the combination of line and nexine 2/2 twill is forged on top layer 4/1, or the combination of line and nexine 3/1 twill is forged on top layer 4/1, or the combination of top layer 1/1 plain weave and nexine 3/1 twill.
8. the filter cloth being applied to pharmaceutical industry high-purity and extracting according to claim 1, it is characterized in that, described filter cloth texture is 2/2 twill, and being interweaved by longitude and latitude node is formed by connecting.
9. be applied to the weaving method of the filter cloth that pharmaceutical industry high-purity is extracted, it is characterized in that, mainly comprise the following steps:
(1) the application operating mode extracted according to pharmaceutical industry high-purity selects super fine denier number porous polypropylene fibre multifilament;
(2) super fine denier number porous polypropylene fibre multifilament is added the super large twist, by yarn steaming process by polypropylene fibre multifilament pre-setting, stablize yarn twist;
(3) be wound in warp beam according to design density by the single even tension of polypropylene fibre multifilament complete for preliminary treatment, single tension force is at 100 ~ 150cN, and single tension force must ensure unanimously, and single tension error is no more than 1cN, to ensure the definitely smooth of following fabric;
(4) weave, this weaves employing hightension, and single warp tension is not less than 300 ± 1 cN;
(5) carry out HEAT SETTING process to filter cloth, stable dimensions, described temperature range is 120-170 DEG C;
(6) filter cloth is carried out the process of surface high-temp instantaneous polymerization, by flat for longitude and latitude node processing, described high temperature range is 120-220 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429906.5A CN104357998A (en) | 2014-08-28 | 2014-08-28 | Filtering cloth applied to high-purity extraction in pharmaceutical industry and weaving method of filtering cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410429906.5A CN104357998A (en) | 2014-08-28 | 2014-08-28 | Filtering cloth applied to high-purity extraction in pharmaceutical industry and weaving method of filtering cloth |
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| Publication Number | Publication Date |
|---|---|
| CN104357998A true CN104357998A (en) | 2015-02-18 |
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| CN201410429906.5A Pending CN104357998A (en) | 2014-08-28 | 2014-08-28 | Filtering cloth applied to high-purity extraction in pharmaceutical industry and weaving method of filtering cloth |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332384A (en) * | 2007-06-26 | 2008-12-31 | 上海火炬产业用纺织品有限公司 | Filter cloth using polypropylene fiber silk as raw material and production method thereof |
| CN101564619A (en) * | 2008-04-22 | 2009-10-28 | 东丽纤维研究所（中国）有限公司 | Reinforcing fabric for non-woven fabric heat-resisting filter material and application thereof |
| CN201578933U (en) * | 2009-11-16 | 2010-09-15 | 天台县西南滤布厂 | Superfine polypropylene fiber double-sided symmetrical twill filter cloth |
| CN201930642U (en) * | 2010-12-31 | 2011-08-17 | 秦皇岛新维工业用布有限公司 | Filter cloth |
| DE102011121380A1 (en) * | 2011-12-19 | 2013-06-20 | Nextrusion Gmbh | Fabric used for e.g. filtration sieves, consists of yarns or threads containing polyethylene terephthalate, polyamides or polyolefin such as polyethylene or polypropylene and polylactide |
| CN203043733U (en) * | 2012-12-10 | 2013-07-10 | 江苏林欧环保科技有限公司 | Monofilament filter cloth for fine chemical engineering |
-
2014
- 2014-08-28 CN CN201410429906.5A patent/CN104357998A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101332384A (en) * | 2007-06-26 | 2008-12-31 | 上海火炬产业用纺织品有限公司 | Filter cloth using polypropylene fiber silk as raw material and production method thereof |
| CN101564619A (en) * | 2008-04-22 | 2009-10-28 | 东丽纤维研究所（中国）有限公司 | Reinforcing fabric for non-woven fabric heat-resisting filter material and application thereof |
| CN201578933U (en) * | 2009-11-16 | 2010-09-15 | 天台县西南滤布厂 | Superfine polypropylene fiber double-sided symmetrical twill filter cloth |
| CN201930642U (en) * | 2010-12-31 | 2011-08-17 | 秦皇岛新维工业用布有限公司 | Filter cloth |
| DE102011121380A1 (en) * | 2011-12-19 | 2013-06-20 | Nextrusion Gmbh | Fabric used for e.g. filtration sieves, consists of yarns or threads containing polyethylene terephthalate, polyamides or polyolefin such as polyethylene or polypropylene and polylactide |
| CN203043733U (en) * | 2012-12-10 | 2013-07-10 | 江苏林欧环保科技有限公司 | Monofilament filter cloth for fine chemical engineering |
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| CB03 | Change of inventor or designer information |
Inventor after: Hou Wanghui Inventor after: Guan Taiping Inventor after: Lin Liyan Inventor before: Hou Wanghui Inventor before: Guan Taiping Inventor before: Lin Liyan |
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Application publication date: 20150218 |