CN108079699A - A kind of a lot of dust amount dust catcher filtering material - Google Patents

A kind of a lot of dust amount dust catcher filtering material Download PDF

Info

Publication number
CN108079699A
CN108079699A CN201711407916.9A CN201711407916A CN108079699A CN 108079699 A CN108079699 A CN 108079699A CN 201711407916 A CN201711407916 A CN 201711407916A CN 108079699 A CN108079699 A CN 108079699A
Authority
CN
China
Prior art keywords
filtering material
layer
dust
outer layer
fiber
Prior art date
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.)
Pending
Application number
CN201711407916.9A
Other languages
Chinese (zh)
Inventor
朱桂林
朱振霄
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Suzhou Jiayida Electrical Appliances Co Ltd
Original Assignee
Suzhou Jiayida Electrical Appliances Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Suzhou Jiayida Electrical Appliances Co Ltd filed Critical Suzhou Jiayida Electrical Appliances Co Ltd
Priority to CN201711407916.9A priority Critical patent/CN108079699A/en
Publication of CN108079699A publication Critical patent/CN108079699A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/30—Particle separators, e.g. dust precipitators, using loose filtering material
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/10—Filters; Dust separators; Dust removal; Automatic exchange of filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/067—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/047—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material made of fibres or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/20—All layers being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—Fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0253—Polyolefin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/06—Vegetal fibres
    • B32B2262/062—Cellulose fibres, e.g. cotton
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres

Abstract

This case is related to a kind of a lot of dust amount dust catcher filtering material, including inner layer, filled layer and outer layer；Inner layer is woven by glass fibre and polytetrafluoroethylene fibre according to satin weave mode；Filled layer contains polylactic acid-co-glycolic acid fiber, silica flour, carbon fiber and N methyl pyrrolidones；Outer layer is woven by glass fibre and modified cotton fiber according to satin weave mode；Filtering material provided by the present invention is mainly used for domestic vacuum cleaners, and not only filter efficiency is high for the filtering material, but also dust containing capacity is big, validity period limit for length, and market prospects are more extensive.

Description

A kind of a lot of dust amount dust catcher filtering material
Technical field
The invention belongs to dust collecting technique fields, and in particular to a kind of a lot of dust amount dust catcher filtering material.
Background technology
In order to mitigate the burden of housework, people are freed from heavy cleaning, dust catcher is as one The burnisher of kind convenient and efficient has entered into huge numbers of families.Dust catcher is the motive power using electricity as machine operation, is passed through It forms strong air flow and generates pull of vacuum, and using the suction rubbish such as required dust, the paper scraps for sweeping place Rubbish is washed through hose in dust bucket, completes the process swept.
The most important effect of dust catcher is exactly dust filtering and dust, can fully cut dust-break angstrom and foul, while can allow again Air passes through, and dust filtering material used should have enough intensity to bear wind pressure and will not be damaged.Dust catcher filters Material includes glass fibre, polypropylene, activated carbon fibre, polyphenylene sulfide, aramid fiber etc., the index of reflection filtering dust material property Usually there are filter efficiency, gas permeability, dirt capacity, fiber transfer, aperture, the pressure loss (i.e. filtration resistance), initial resistance etc..Its In, the dust containing capacity of material is when the whole resistance of the filtering material in using usually being reached 2 times of initial resistance on filtering material Dust accumulation amount can interpolate that the service life of filtering material by dirt capacity as its standard dirt capacity, and mistake in existing dust catcher The dirt capacity of filter material material is smaller, causes service life shorter, while the replacement cycle also shortens.
The content of the invention
For shortcoming of the prior art, it is an object of the invention to provide a kind of filterings of a lot of dust amount dust catcher Material.
The present invention provides a kind of a lot of dust amount dust catcher filtering material, including inner layer, filled layer and outer layer；In described Layer is woven by glass fibre and polytetrafluoroethylene fibre according to satin weave mode；The filled layer contains polylactic acid-hydroxyl second Acid copolymer fiber, silica flour, carbon fiber and N-Methyl pyrrolidone；The outer layer by glass fibre and modified cotton fiber according to Satin weave mode weaves.
Preferably, the inner layer satin weave middle longitude is adopted as glass fibre, and weft uses polytetrafluoroethylene fibre.
Preferably, polylactic acid-co-glycolic acid fiber, silica flour, carbon fiber and N- methylpyrroles in filled layer The weight composition of alkanone is 1: 2-2.5: 2.5-3: 0.1-0.15.
Preferably, the outer layer satin weave middle longitude uses glass fibre, and weft uses modified cotton fiber.
Preferably, the grain size of silica flour is less than 300 mesh in the filled layer；Polylactic acid-the co-glycolic acid The length of fiber and carbon fiber is in 5-10mm.
Limited says, the modified cotton fiber in the outer layer is using acrylamide quaternary ammonium salt as modifying agent, with dipping Technique is made.
Preferably, the weight ratio of the inner layer, filled layer and outer layer is 1: 2-2.2: 1-1.1.
Elaboration to the present invention and its advantage：Filtering material provided by the present invention is mainly used for domestic vacuum cleaners, Not only filter efficiency is high for the filtering material, but also dust containing capacity is big, validity period limit for length, and market prospects are more extensive；Mistake in this case The internal layer of filter material material by glass fibre and it is teflon fibre braided form, the inner layer structure dust containing capacity of gained is big and is convenient for Cleaning；Silica flour in filled layer is the key that improve filtering material service life, in the fusion of N-Methyl pyrrolidone Under, silica flour, polylactic acid-co-glycolic acid fiber and carbon fiber are cross-linked with each other to form the special filling of a lot of dust amount Object, between each component mutual cooperation act on, realize a lot of dust amount of filtering material；Filtering material outer layer employs glass fibre The quaternary ammonium salt-modified cotton fiber with acrylamide, using the weaving manner of satin weave, fabrics smooth is soft, the addition of modified cotton fiber Effectively increase the dust containing capacity and service life of material；The cooperation effect of internal layer, filled layer and outer layer finally realized The excellent appearance dirt performance of filter material material.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification Word can be implemented according to this.
Embodiment 1
Inner layer：Glass fibre and polytetrafluoroethylene fibre weave according to satin weave mode, and warp is adopted as glass fibre, Weft uses polytetrafluoroethylene fibre；
Outer layer：It is woven by glass fibre and the quaternary ammonium salt-modified cotton fiber of acrylamide according to satin weave mode, warp is adopted With glass fibre, weft uses modified cotton fiber；
Filled layer：By polylactic acid -1 parts by weight of co-glycolic acid fiber, 2.5 parts by weight of silica flour, 3 weight of carbon fiber Amount part and 0.12 parts by weight of N-Methyl pyrrolidone are uniformly mixed；The mixture is applied on the inside of outer layer and bonds upper internal layer, Internal layer and outer layer it is identical in quality, the weight of filled layer is 2 times of internal layer.
Embodiment 2
Silica flour weight in filled layer in embodiment 1 is adjusted to 2 parts by weight, N-Methyl pyrrolidone weight is adjusted to 0.1 parts by weight, remaining composition are same as Example 1.
Comparative example 1
Polytetrafluoroethylene fibre in 1 inner layer of embodiment is replaced with glass fibre, i.e., glass fibers are used only in interior layer material Dimension, remaining composition are same as Example 1.
Comparative example 2
The quaternary ammonium salt-modified cotton fiber of acrylamide in 1 outer layer of embodiment is replaced with common cotton fiber, remaining composition It is same as Example 1.
Comparative example 3
Modified cotton fiber in 1 outer layer of embodiment with glass fibre is replaced, i.e., glass fibre is used only in cladding material, Remaining composition is same as Example 1.
Comparative example 4
Polylactic acid-co-glycolic acid fiber in 1 filled layer of embodiment is replaced with acid fiber by polylactic, remaining composition It is same as Example 1.
Comparative example 5
Silica flour in 1 filled layer of embodiment is replaced with the talcum powder of identical weight, remaining composition and 1 phase of embodiment Together.
Comparative example 6
Commercially available top grade dust catcher filtering material.
For the dust containing capacity of each filtering material in testing example 1-2 and comparative example 1-6, each product is cut into size respectively For 15*15cm2Square, in salt aerosol, filtering velocity under 4.5cm/s, to be reached by the whole resistance for testing filtering material Dust accumulation amount during 2 times of numerical value of its initial resistance on filtering material determines respective dust containing capacity, is as a result reported in Table 1 below.
By the data in table 1, it can be seen that according to the filtering material that the present invention is produced, i.e. embodiment 1 and embodiment 2, dust containing capacity is maximum, illustrates that its effective life is most long, durability is best；Comparative example 1- comparative examples 3 changed respectively Fibrous raw material composition in filter material material inner layer or outer layer, the dust containing capacity of resulting materials is decreased obviously, and illustrates inner layer and outer The selection of layer fibrous material and weaving manner all play an important roll the raising of dust containing capacity, this is unable to reach once changing Invention institute appearance dirt standard to be achieved；Comparative example 4-5 changes the raw material composition in filled layer, and respective dust containing capacity is also relatively implemented Example 1 significantly reduces, and especially in comparative example 5, when lacking quartz sand in filled layer, the dust containing capacity of material has dropped 25%, But the comprehensive performances such as filter efficiency, tensile strength for material, it is necessary to which quartz sand cooperation polylactic acid-hydroxyacetic acid is common Polymer fibre, carbon fiber and N-Methyl pyrrolidone comprehensive function could really realize the raising of the Rong Chenxing of material；Pass through The test result of embodiment 1 and comparative example 7 compares, it is found that the dust catcher filtering material prepared by the present invention is holding dirt Similar product in property more on the market improves a lot.
Table 1
Although the embodiments of the present invention have been disclosed as above, but its be not restricted in specification and embodiment it is listed With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, it is of the invention and unlimited In specific details.

Claims (7)

1. a kind of a lot of dust amount dust catcher filtering material, which is characterized in that including inner layer, filled layer and outer layer；The inner layer It is woven by glass fibre and polytetrafluoroethylene fibre according to satin weave mode；The filled layer contains polylactic acid-hydroxyacetic acid Copolymer fibre, silica flour, carbon fiber and N-Methyl pyrrolidone；The outer layer is by glass fibre and modified cotton fiber according to satin Line mode weaves.
2. filtering material according to claim 1, which is characterized in that the inner layer satin weave middle longitude is adopted as glass fibers Dimension, weft use polytetrafluoroethylene fibre.
3. filtering material according to claim 1, which is characterized in that polylactic acid-co-glycolic acid is fine in filled layer Dimension, silica flour, the weight composition of carbon fiber and N-Methyl pyrrolidone are 1: 2-2.5: 2.5-3: 0.1-0.15.
4. filtering material according to claim 1, which is characterized in that the outer layer satin weave middle longitude uses glass fibre, Weft uses modified cotton fiber.
5. filtering material according to claim 1, which is characterized in that the grain size of silica flour is less than 300 in the filled layer Mesh；The length of the polylactic acid-co-glycolic acid fiber and carbon fiber is in 5-10mm.
6. filtering material according to claim 1, which is characterized in that the modified cotton fiber in the outer layer is with acryloyl Amine quaternary ammonium salt is made as modifying agent with impregnation technology.
7. filtering material according to claim 1, which is characterized in that the weight ratio of the inner layer, filled layer and outer layer is 1 ∶2-2.2∶1-1.1。
CN201711407916.9A 2017-12-22 2017-12-22 A kind of a lot of dust amount dust catcher filtering material Pending CN108079699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711407916.9A CN108079699A (en) 2017-12-22 2017-12-22 A kind of a lot of dust amount dust catcher filtering material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711407916.9A CN108079699A (en) 2017-12-22 2017-12-22 A kind of a lot of dust amount dust catcher filtering material

Publications (1)

Publication Number Publication Date
CN108079699A true CN108079699A (en) 2018-05-29

Family

ID=62178820

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711407916.9A Pending CN108079699A (en) 2017-12-22 2017-12-22 A kind of a lot of dust amount dust catcher filtering material

Country Status (1)

Country Link
CN (1) CN108079699A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102500158A (en) * 2011-11-29 2012-06-20 无锡格瑞普尔膜科技有限公司 Preparation method for high-efficiency filter medium with adion exchanging function and membrane filtering function
CN104652038A (en) * 2015-01-14 2015-05-27 上海特安纶纤维有限公司 Blending type fiber, non-woven fabric containing fiber, filter material, and preparation methods thereof
CN204469392U (en) * 2014-12-31 2015-07-15 泉州市泉港区争艳农场 A kind of air-filtering non-woven fabrics
CN205182363U (en) * 2015-08-31 2016-04-27 浙江天台华宇工业用布有限公司 Novel filter cloth
CN105561676A (en) * 2014-10-13 2016-05-11 江苏康洁环境工程有限公司 Composite filter cloth equipped with filter membrane
CN105999884A (en) * 2016-08-02 2016-10-12 安徽国能亿盛环保科技有限公司 High-strength de-dusting filter material
CN106861293A (en) * 2010-10-06 2017-06-20 霍林斯沃思和沃斯有限公司 It is adapted to the filter medium of hydraulic pressure application
CN206334441U (en) * 2016-12-26 2017-07-18 无锡市玉净净化科技有限公司 High efficiency filter cotton

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106861293A (en) * 2010-10-06 2017-06-20 霍林斯沃思和沃斯有限公司 It is adapted to the filter medium of hydraulic pressure application
CN102500158A (en) * 2011-11-29 2012-06-20 无锡格瑞普尔膜科技有限公司 Preparation method for high-efficiency filter medium with adion exchanging function and membrane filtering function
CN105561676A (en) * 2014-10-13 2016-05-11 江苏康洁环境工程有限公司 Composite filter cloth equipped with filter membrane
CN204469392U (en) * 2014-12-31 2015-07-15 泉州市泉港区争艳农场 A kind of air-filtering non-woven fabrics
CN104652038A (en) * 2015-01-14 2015-05-27 上海特安纶纤维有限公司 Blending type fiber, non-woven fabric containing fiber, filter material, and preparation methods thereof
CN205182363U (en) * 2015-08-31 2016-04-27 浙江天台华宇工业用布有限公司 Novel filter cloth
CN105999884A (en) * 2016-08-02 2016-10-12 安徽国能亿盛环保科技有限公司 High-strength de-dusting filter material
CN206334441U (en) * 2016-12-26 2017-07-18 无锡市玉净净化科技有限公司 High efficiency filter cotton

Similar Documents

Publication Publication Date Title
US8152879B2 (en) Filter bag for a vacuum cleaner and also use thereof
US8728212B2 (en) High efficiency low pressure drop synthetic fiber based air filter made completely from post consumer waste materials
CN101302659B (en) Bi-component polyester coarse fibre, filter material and preparation thereof
JP2014529495A (en) Multilayer filter media and filter elements made from multilayer filter media
AU2004304682A1 (en) Vacuum cleaner bag and method for extending the service life thereof
CN102824785A (en) Ultra-high molecular weight polyethylene filter cloth and production method thereof
CN207738932U (en) A kind of weaving loom with dedusting function
CN103249883A (en) Low elongation structures for hot gas filtration
CN108079699A (en) A kind of a lot of dust amount dust catcher filtering material
CN206285640U (en) A kind of sack cleaner filter bay assembly
CN205867723U (en) Filter bag is crossed to liquid
CN102527150A (en) Preparation method of smoke dust filter material by using glass fiber
CN109367171A (en) A kind of polytetrafluoroethylene material filtrate base fabric resistant to high temperature
CN108079663A (en) A kind of dust catcher filtering material of filtration efficiency
CN109289324A (en) A kind of composite dedusting removes peculiar smell filter cloth
CN105617763A (en) Composite air filtration cloth and manufacturing method thereof
CN108043113A (en) It is a kind of to be resistant to the high dust catcher filtering material of the rate of filtration
KR20140107742A (en) Ultra fine fiber filter and manufacturing method of the same
CN209828447U (en) Composite filter cloth with viscose layer
CN215742432U (en) Dust remover sweeps device
CN102389671A (en) Graphite alkali-free high-precision filtration dust bag and manufacturing process thereof
CN203790734U (en) Dust remover filtering bag with good filtering effect
CN112007428A (en) Composite sintered plate, preparation method thereof and sintered plate type dust remover
CN206502469U (en) A kind of improved textile machinery bobbin
CN202387309U (en) Filtering material for filtering superfine dust

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20180529

RJ01 Rejection of invention patent application after publication