CN108274833A - A kind of non-woven fabrics that filter capacity is strong - Google Patents
A kind of non-woven fabrics that filter capacity is strong Download PDFInfo
- Publication number
- CN108274833A CN108274833A CN201810180285.XA CN201810180285A CN108274833A CN 108274833 A CN108274833 A CN 108274833A CN 201810180285 A CN201810180285 A CN 201810180285A CN 108274833 A CN108274833 A CN 108274833A
- Authority
- CN
- China
- Prior art keywords
- cloth
- bed
- hole
- woven fabrics
- stratum reticulare
- 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.)
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Links
- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 33
- 239000004744 fabric Substances 0.000 claims abstract description 64
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 53
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 7
- 239000003610 charcoal Substances 0.000 claims description 5
- 239000004831 Hot glue Substances 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 8
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 238000004078 waterproofing Methods 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000002313 adhesive film Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229920001821 foam rubber Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000742 Cotton Polymers 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
- B32B5/18—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 features of a layer of foamed material
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2055—Carbonaceous material
- B01D39/2065—Carbonaceous material the material being fibrous
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- 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
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
-
- 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
- B32B5/02—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 structural features of a fibrous or filamentary layer
- B32B5/028—Net structure, e.g. spaced apart filaments bonded at the crossing points
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
-
- 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
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/73—Hydrophobic
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Filtering Materials (AREA)
Abstract
The invention discloses a kind of non-woven fabrics that filter capacity is strong,It is made of nonwoven cloth,The nonwoven cloth is by the first bed of cloth,Second bed of cloth,Sponge bed course and activated carbon stratum reticulare are constituted,The sponge bed course and activated carbon stratum reticulare are between the first bed of cloth and the second bed of cloth,Filter is equipped between the sponge bed course and activated carbon stratum reticulare,Four end edge angles of first bed of cloth and the second bed of cloth are equipped with locking hole,It is respectively equipped with first through hole and the second through-hole on four end edge angles of the sponge bed course and activated carbon stratum reticulare,The locking hole,First through hole and the second through-hole are run through jointly by fixed pin to be fixed,Pass through the addition of sponge bed course and active carbon net,The effective water proofing property or filterability for enhancing nonwoven cloth,Pass through different filter layers,So that non-woven fabrics material entirety has stronger filterability,To improve non-woven fabrics practicability in different field.
Description
Technical field
The present invention relates to field of nonwoven fabric technology, specially a kind of non-woven fabrics that filter capacity is strong.
Background technology
Non-woven fabrics refers to non-woven cloth, or is nonwoven fabric.It is a kind of need not spin cotton and weave cloth and the fabric formed, only
Textile staple or long filament are oriented or then randomizing, formation fibre net structure use mechanical, hot sticky or chemical etc.
Method is reinforced, and has moisture-proof, ventilative, flexible, light, not combustion-supporting, easy decomposition, nontoxic nonirritant, rich in color, valence
The features such as lattice are cheap, recyclable.
Non-woven fabrics on the market is chiefly used in the fields such as health care, agricultural, industry and packaging at present, due to current nonwoven
Cloth material is more single, and there is certain limitation, the unicity of material to result in non-woven fabrics mistake in the purposes of different field
Filter efficiency and low-quality situation.To solve the above-mentioned problems, therefore, we have proposed a kind of non-woven fabrics that filter capacity is strong.
Invention content
The purpose of the present invention is to provide a kind of non-woven fabrics that filter capacity is strong, solve asking proposed in background technology
Topic.
To achieve the above object, the present invention provides the following technical solutions：A kind of non-woven fabrics that filter capacity is strong, by non-woven fabrics
Material is constituted, and the nonwoven cloth is made of the first bed of cloth, the second bed of cloth, sponge bed course and activated carbon stratum reticulare, the sponge
Bed course and activated carbon stratum reticulare are between the first bed of cloth and the second bed of cloth, between the sponge bed course and activated carbon stratum reticulare
Equipped with filter, four end edge angles of first bed of cloth and the second bed of cloth are equipped with locking hole, the sponge bed course and activity
First through hole and the second through-hole are respectively equipped on four end edge angles of charcoal stratum reticulare, the locking hole, first through hole and the second through-hole are equal
Run through jointly by fixed pin and is fixed.
As a kind of preferred embodiment of the present invention, first bed of cloth, the second bed of cloth, sponge bed course and activity
Charcoal stratum reticulare size physical size is identical.
As a kind of preferred embodiment of the present invention, the locking hole, first through hole and the second hole size, structure phase
Same and corresponding position is consistent.
As a kind of preferred embodiment of the present invention, first bed of cloth and the second bed of cloth respectively with sponge bed course
It is equipped with anticorrosive heat insulating adhesive film in one end cloth surface connected with activated carbon stratum reticulare.
As a kind of preferred embodiment of the present invention, the sponge bed course is internally provided with anti-corrosion dry particle.
Compared with prior art, beneficial effects of the present invention are as follows：
By the addition of sponge bed course and active carbon net, the water proofing property or filterability of nonwoven cloth are effectively enhanced, is led to
Cross different filter layers so that non-woven fabrics material entirety has stronger filterability, to improve non-woven fabrics in different field
Upper practicability.
Description of the drawings
Fig. 1 is a kind of non-woven fabrics overall appearance structural representation that filter capacity is strong of the present invention；
Fig. 2 is a kind of non-woven fabrics foam-rubber cushion schematic diagram of a layer structure that filter capacity is strong of the present invention；
Fig. 3 is a kind of non-woven fabrics active carbon net schematic diagram of a layer structure that filter capacity is strong of the present invention.
In figure:1- nonwoven clothes, the first bed of cloths of 2-, the second bed of cloths of 3-, 4- sponge bed courses, 5- activated carbon stratum reticulares, 6-
Locking hole, 7- first through hole, the second through-holes of 8-.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
- 3 are please referred to Fig.1, the present invention provides a kind of technical solution：A kind of non-woven fabrics that filter capacity is strong, by nonwoven cloth 1
It constitutes, the nonwoven cloth 1 is made of the first bed of cloth 2, the second bed of cloth 3, sponge bed course 4 and activated carbon stratum reticulare 5, the sea
Continuous bed course 4 and activated carbon stratum reticulare 5 are the sponge bed course 4 and activated carbon between the first bed of cloth 2 and the second bed of cloth 3
Filter is equipped between stratum reticulare 5, four end edge angles of first bed of cloth, 2 and second bed of cloth 3 are equipped with locking hole 6, the sea
It is respectively equipped with first through hole 7 and the second through-hole 8, the locking hole 6, first on four end edge angles of continuous bed course 4 and activated carbon stratum reticulare 5
Through-hole 7 and the second through-hole 8 are run through jointly by fixed pin to be fixed.
As a kind of preferred embodiment of the present invention, first bed of cloth 2, the second bed of cloth 3,4 and of sponge bed course
5 size physical size of activated carbon stratum reticulare is identical.The first bed of cloth, the second bed of cloth, sponge bed course and the activated carbon of same size
Stratum reticulare ensures the integrally-built consistency of non-woven fabrics.
As a kind of preferred embodiment of the present invention, 8 size of the locking hole 6, first through hole 7 and the second through-hole, knot
Structure is identical and corresponding position is consistent.Locking hole, first through hole, the second through-hole of same size ensure fixed pin through fixed
Consistency and fixed compactness.
As the present invention a kind of preferred embodiment, first bed of cloth, 2 and second bed of cloth 3 respectively with foam-rubber cushion
It is equipped with anticorrosive heat insulating adhesive film in one end cloth surface that layer 4 and activated carbon stratum reticulare 5 connect.Pass through adding for anticorrosive heat insulating adhesive film
Add and effectively enhance the whole heat-insulated and corrosion-resistant effect of non-woven fabrics, while sponge bed course and activated carbon stratum reticulare have been provided
The protection of effect.
As a kind of preferred embodiment of the present invention, the sponge bed course 4 is internally provided with anti-corrosion dry particle.By anti-
Rotten dry particle effectively adsorbs the moisture in humid air, to improve the quality of anti-corrosion drying.
A kind of strong non-woven fabrics of filter capacity of the present invention, compound type non-woven fabric, the first bed of cloth 2 and the second cloth
Layer 3 provides external protection for entire nonwoven cloth 1, provides nonwoven cloth 1 one layer of protection, if wet air into
When entering nonwoven 1 inside of cloth, when wet air is by sponge bed course 4, the anti-corrosion dry particle inside sponge bed course 4 has
Effect, which to the moisture in air absorb, achievees the effect that minitype particle that is dry, while containing in some air, passes through activity
When charcoal stratum reticulare 5, the adsorbent charcoal on activated carbon stratum reticulare 5 can effectively adsorb the minitype particle in air, in entire nonwoven
The filtering of cloth 1 to a certain degree when, the fixed pin at four ends can be removed, internal sponge bed course 4 and activated carbon stratum reticulare 5 are carried out
It replaces.
The nonwoven cloth 1 of the present invention, first layer cloth 2, second layer cloth 3, sponge bed course 4, activated carbon stratum reticulare 5, locking
Hole 6, first through hole 7, the second through-hole 8, component are universal standard part or the component that those skilled in the art know, structure and
Principle, which is all this technology personnel, can be learnt by technical manual or be known by routine experiment method, problems solved by the invention
It is that non-woven fabrics material is more single, there is certain limitation, the unicity of material to result in nothing in the purposes of different field
Woven fabric filter efficiency and low-quality situation.The present invention uses the addition by sponge bed course 4 and active carbon net 5, effective to increase
The strong water proofing property or filterability of nonwoven cloth, passes through different filter layers so that non-woven fabrics material it is whole there is stronger mistake
Filter property, to improve non-woven fabrics practicability in different field.
Finally it should be noted that：The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in the present invention's
Within protection domain.
Claims (5)
1. a kind of non-woven fabrics that filter capacity is strong is made of nonwoven cloth (1), it is characterised in that：The nonwoven cloth (1) is by
One bed of cloth (2), the second bed of cloth (3), sponge bed course (4) and activated carbon stratum reticulare (5) are constituted, the sponge bed course (4) and work
Property charcoal stratum reticulare (5) is the sponge bed course (4) and activated carbon stratum reticulare between the first bed of cloth (2) and the second bed of cloth (3)
(5) filter is equipped between, four end edge angles of first bed of cloth (2) and the second bed of cloth (3) are equipped with locking hole (6), institute
It states and is respectively equipped with first through hole (7) and the second through-hole (8) on four end edge angles of sponge bed course (4) and activated carbon stratum reticulare (5), it is described
Locking hole (6), first through hole (7) and the second through-hole (8) are run through jointly by fixed pin to be fixed.
2. a kind of strong non-woven fabrics of filter capacity according to claim 1, it is characterised in that：First bed of cloth (2),
Second bed of cloth (3), sponge bed course (4) are identical with activated carbon stratum reticulare (5) size physical size.
3. a kind of strong non-woven fabrics of filter capacity according to claim 1, it is characterised in that：The locking hole (6), first
Through-hole (7) with the second through-hole (8) size, structure is identical and corresponding position is consistent.
4. a kind of strong non-woven fabrics of filter capacity according to claim 1, it is characterised in that：First bed of cloth (2)
Be equipped in one end cloth surface being connect respectively with sponge bed course (4) and activated carbon stratum reticulare (5) with the second bed of cloth (3) anti-corrosion every
Hot glue film layer.
5. a kind of strong non-woven fabrics of filter capacity according to claim 1, it is characterised in that：In the sponge bed course (4)
Portion is equipped with anti-corrosion dry particle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180285.XA CN108274833A (en) | 2018-03-05 | 2018-03-05 | A kind of non-woven fabrics that filter capacity is strong |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810180285.XA CN108274833A (en) | 2018-03-05 | 2018-03-05 | A kind of non-woven fabrics that filter capacity is strong |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108274833A true CN108274833A (en) | 2018-07-13 |
Family
ID=62809129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810180285.XA Withdrawn CN108274833A (en) | 2018-03-05 | 2018-03-05 | A kind of non-woven fabrics that filter capacity is strong |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108274833A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721529A (en) * | 2019-10-22 | 2020-01-24 | 安徽原野滤材有限公司 | Improved nano composite filter cloth |
| CN112549681A (en) * | 2020-12-04 | 2021-03-26 | 南通汇优洁医用材料有限公司 | Non-woven fabric with strong air permeability and filtration capacity |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2621740Y (en) * | 2003-06-12 | 2004-06-30 | 东华大学 | High temp sterilizing mask |
| CN105749650A (en) * | 2016-05-12 | 2016-07-13 | 宁波钛安新材料科技有限公司 | Spongy air purifying filter mesh and production method thereof |
| CN205853517U (en) * | 2016-08-06 | 2017-01-04 | 温州新宇无纺布有限公司 | Filtration non-woven fabrics |
| CN206518162U (en) * | 2017-03-04 | 2017-09-26 | 江阴市檬佳非织布制品有限公司 | A kind of mouth mask |
-
2018
- 2018-03-05 CN CN201810180285.XA patent/CN108274833A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2621740Y (en) * | 2003-06-12 | 2004-06-30 | 东华大学 | High temp sterilizing mask |
| CN105749650A (en) * | 2016-05-12 | 2016-07-13 | 宁波钛安新材料科技有限公司 | Spongy air purifying filter mesh and production method thereof |
| CN205853517U (en) * | 2016-08-06 | 2017-01-04 | 温州新宇无纺布有限公司 | Filtration non-woven fabrics |
| CN206518162U (en) * | 2017-03-04 | 2017-09-26 | 江阴市檬佳非织布制品有限公司 | A kind of mouth mask |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110721529A (en) * | 2019-10-22 | 2020-01-24 | 安徽原野滤材有限公司 | Improved nano composite filter cloth |
| CN112549681A (en) * | 2020-12-04 | 2021-03-26 | 南通汇优洁医用材料有限公司 | Non-woven fabric with strong air permeability and filtration capacity |
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| 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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180713 |