CN212383335U - Non-woven fabric and multi-layer composite air filter material structure - Google Patents
Non-woven fabric and multi-layer composite air filter material structure Download PDFInfo
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- CN212383335U CN212383335U CN202020568361.7U CN202020568361U CN212383335U CN 212383335 U CN212383335 U CN 212383335U CN 202020568361 U CN202020568361 U CN 202020568361U CN 212383335 U CN212383335 U CN 212383335U
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 69
- 239000002131 composite material Substances 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 title claims abstract description 20
- 239000010410 layer Substances 0.000 claims abstract description 75
- 239000000835 fiber Substances 0.000 claims abstract description 63
- 239000011148 porous material Substances 0.000 claims abstract description 49
- 239000012792 core layer Substances 0.000 claims abstract description 23
- 239000002344 surface layer Substances 0.000 claims abstract description 12
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000004698 Polyethylene Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 6
- 230000008018 melting Effects 0.000 claims abstract description 6
- 229920000728 polyester Polymers 0.000 claims abstract description 6
- -1 polyethylene Polymers 0.000 claims abstract description 6
- 229920000573 polyethylene Polymers 0.000 claims abstract description 6
- 238000009987 spinning Methods 0.000 claims abstract description 6
- 230000037303 wrinkles Effects 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 42
- 230000000694 effects Effects 0.000 abstract description 19
- 150000001875 compounds Chemical class 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 8
- 239000002245 particle Substances 0.000 description 8
- 239000006185 dispersion Substances 0.000 description 6
- 239000013618 particulate matter Substances 0.000 description 6
- 238000012216 screening Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000012855 volatile organic compound Substances 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 210000000748 cardiovascular system Anatomy 0.000 description 1
- 210000003169 central nervous system Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010128 melt processing Methods 0.000 description 1
- 210000002345 respiratory system Anatomy 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The utility model discloses a non-woven fabric and multilayer composite air filter material structure, the non-woven fabric is formed by a plurality of skin-core structure fibers through hot air bonding process bonding, the skin-core structure fibers are spiral, the skin-core structure fibers comprise a skin layer and a core layer, the skin layer is polyethylene, the core layer is high-shrinkage polyester fiber, and the core layer and the skin layer are combined through a composite spinning process; after the skin-core structure fibers are subjected to melting treatment, the connecting parts of the skin layers are deformed and bonded, and a plurality of skin-core structure fibers form a non-woven fabric with a fluffy pore structure; after the non-woven fabric is heated, a plurality of folds are formed on the outer peripheral surface of the skin layer. The multilayer composite air filter material structure comprises a base layer, a middle layer and a surface layer, wherein the base layer is arranged to be a needle-punched non-woven filter felt layer, the middle layer is arranged to be an activated carbon fiber layer, and the surface layer is arranged to be non-woven fabric. The utility model discloses non-woven fabrics and compound air filter material structure of multilayer have good filtration efficiency and filter effect, extensively are used for normal atmospheric temperature filtration environment.
Description
Technical Field
The utility model relates to a filtering material technical field, in particular to non-woven fabrics and compound air filter material structure of multilayer.
Background
With the acceleration of the modern industrial process in China, the content of air pollutants mainly comprising suspended particulate matters and volatile organic compounds in the air rapidly rises, the air quality is increasingly deteriorated, and the daily work and life of people are seriously influenced. For example, suspended particles (PM 2.5) with the size less than or equal to 2.5 μm in the air are not easy to capture, and diseases of respiratory tract, cardiovascular system and central nervous system can be caused after the suspended particles are inhaled into the lung; and the air contains a large amount of Organic Substances (VOCs) that can cause cancer. Therefore, how to prepare an effective air filter material is a great problem to be solved at present.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims at providing a non-woven fabric, which increases the specific surface area and porosity of a fluffy pore structure due to the existence of folds, so that the pore distribution is more uniform and the pore size of the fluffy pore structure is reduced; therefore, the effects of the non-woven fabric on dispersion, interception, screening, trapping and the like of suspended particles in the carrier are improved, the filtering efficiency and the filtering effect of the non-woven fabric are further improved, and the non-woven fabric is widely applied to a normal-temperature filtering environment.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the non-woven fabric is formed by bonding a plurality of sheath-core structural fibers through a hot air bonding process, the sheath-core structural fibers are spiral, the sheath-core structural fibers comprise a sheath layer and a core layer, the sheath layer is made of polyethylene, the core layer is made of high-shrinkage polyester fibers, and the core layer and the sheath layer are combined through a composite spinning process; after the skin-core structure fibers are subjected to melting treatment, the connecting parts of the skin layers are deformed and bonded, and a plurality of skin-core structure fibers form a non-woven fabric with a fluffy pore structure; after the non-woven fabric is heated, a plurality of folds are formed on the peripheral surface of the skin layer.
By adopting the technical scheme, the non-woven fabric has a fluffy pore structure, and the wrinkles formed on the peripheral surface of the skin layer increase the specific surface area and the porosity of the fluffy pore structure, so that the pore distribution is more uniform, and the pore size of the fluffy pore structure is reduced; thereby improving the functions of the non-woven fabric such as dispersion, interception, screening, trapping and the like of suspended particles in the carrier, and further improving the filtration efficiency and the filtration effect of the non-woven fabric.
The utility model discloses further set up to: the length of the skin-core structure fiber is 20-50 mm; the average fiber fineness of the skin-core structure fiber is 0.05-20 denier.
By adopting the technical scheme, the fineness of the skin-core structure fiber is small, the non-woven fabric with the same thickness has more fluffy pore structures and folds, and the filtering efficiency and the filtering effect of the non-woven fabric are improved.
The utility model discloses further set up to: the dry heat shrinkage rate of the skin layer is 1.0-4.0%, and the dry heat shrinkage rate of the core layer is 20-40%.
By adopting the technical scheme, the dry heat shrinkage rates of the skin layer and the core layer are different, and the spiral skin-core structure fiber is obtained through the composite spinning process, so that the non-woven fabric obtained through melting treatment has more fluffy pore structures, the porosity of the fluffy pore structures is increased, the pore distribution is more uniform, the pore size of the fluffy pore structures is reduced, and the filtering efficiency and the filtering effect of the non-woven fabric are improved.
The utility model discloses further set up to: the elongation at break of the skin-core structure fiber is 3-10%.
By adopting the technical scheme, the non-woven fabric is not easy to relax, namely, the interior of the non-woven fabric is provided with a stable fluffy pore structure, and the non-woven fabric still has good filtering efficiency and filtering effect along with the lapse of service time.
An object of the utility model is also to provide a compound air filter material structure of multilayer, it has good filtration efficiency and filter effect, can effectively block particle pollution, gaseous state pollution, extensively is used for normal atmospheric temperature filtration environment.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the multilayer composite air filter material structure comprises a base layer, a middle layer and a surface layer, wherein the base layer is a needle-punched non-woven filter felt layer, the middle layer is an activated carbon fiber layer, and the surface layer is non-woven fabric; the non-woven fabric comprises a plurality of skin-core structure fibers which are bonded together through a hot air bonding process, and a fluffy pore structure is formed among the plurality of skin-core structure fibers; the sheath-core structure fiber comprises a sheath layer and a core layer, the sheath layer is made of polyethylene, the core layer is made of high-shrinkage polyester fiber, and the peripheral surface of the sheath layer is provided with a plurality of folds.
By adopting the technical scheme, the non-woven fabric is used as the surface layer, and the specific surface area and the porosity of the fluffy pore structure are increased by the folds, so that the pore distribution is more uniform, and the pore size of the fluffy pore structure is reduced; thereby improving the functions of the surface layer non-woven fabric such as dispersion, interception, screening, trapping and the like of suspended particles in the carrier, and further improving the filtration efficiency and the filtration effect of the non-woven fabric. The activated carbon fiber layer is used as an intermediate layer for physically adsorbing pollutants. The needle-punched non-woven filter felt layer is used as a base layer, has small pores and can prevent smaller particle pollution. Therefore, the multilayer composite air filter material structure has good filtering efficiency and filtering effect, can effectively prevent particle pollution and gaseous pollution, and is widely applied to normal-temperature filtering environments.
The utility model discloses further set up to: the length of the skin-core structure fiber is 20-50 mm; the average fiber fineness of the skin-core structure fiber is 0.05-20 denier.
By adopting the technical scheme, the fineness of the skin-core structure fiber is small, the non-woven fabric with the same thickness has more fluffy pore structures and folds, and the filtering efficiency and the filtering effect of the non-woven fabric are improved.
The utility model discloses further set up to: the dry heat shrinkage rate of the skin layer is 1.0-4.0%, and the dry heat shrinkage rate of the core layer is 20-40%.
By adopting the technical scheme, the dry heat shrinkage rates of the skin layer and the core layer are different, and the spiral skin-core structure fiber is obtained through the composite spinning process, so that the non-woven fabric obtained through melting treatment has more fluffy pore structures, the porosity of the fluffy pore structures is increased, the pore distribution is more uniform, the pore size of the fluffy pore structures is reduced, and the filtering efficiency and the filtering effect of the non-woven fabric are improved.
The utility model discloses further set up to: the elongation at break of the skin-core structure fiber is 3-10%.
By adopting the technical scheme, the non-woven fabric is not easy to relax, namely, the interior of the non-woven fabric is provided with a stable fluffy pore structure, and the non-woven fabric still has good filtering efficiency and filtering effect along with the lapse of service time.
The utility model discloses further set up to: the gram weight of the fiber web of the non-woven fabric is 30-35 g/m2。
By adopting the technical scheme, the synchronous fusion bonding of the fibers of the inner and outer skin core structures of the non-woven fabric is convenient to control during the fusion treatment.
The utility model discloses further set up to: the nonwoven arrangement is provided in multiple layers.
By adopting the technical scheme, the filtering efficiency and the filtering effect of the non-woven fabric are improved.
To sum up, the utility model discloses following beneficial effect has:
the non-woven fabric is provided with a fluffy pore structure, and wrinkles are formed on the outer peripheral surface of the skin layer, so that the specific surface area and the porosity of the fluffy pore structure are increased, the pore distribution is more uniform, and the pore size of the fluffy pore structure is reduced; thereby improving the functions of the non-woven fabric such as dispersion, interception, screening, trapping and the like of suspended particles in the carrier, and further improving the filtration efficiency and the filtration effect of the non-woven fabric.
The second and multilayer composite air filter material structure has good filtering efficiency and filtering effect, can effectively prevent particle pollution and gaseous pollution, and is widely used for normal temperature filtering environment.
Drawings
FIG. 1 is a schematic structural view of a nonwoven fabric of the present invention;
FIG. 2 is a schematic radial cross-sectional view of a sheath-core structured fiber in the nonwoven fabric of the present invention;
fig. 3 is a schematic overall cross-sectional view of the multi-layer composite air filter structure of the present invention.
In the figure, 1, a non-woven fabric; 11. a sheath-core structural fiber; 111. a skin layer; 112. a core layer; 113. folding; 12. a fluffy pore structure; 2. an activated carbon fiber layer; 3. a needle-punched non-woven filter felt layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: as shown in fig. 1-2, a non-woven fabric disclosed by the present invention is made of a plurality of sheath-core structural fibers 11 sequentially through a hot air bonding process and a temperature-raising treatment process.
The sheath-core structure fiber 11 is spiral, the length of the sheath-core structure fiber 11 is 20-50 mm, and the average fiber fineness of the sheath-core structure fiber 11 is 0.05-20 denier; and the elongation at break of the sheath-core structure fiber 11 is 3-10%, so that the non-woven fabric 1 is not easy to loose.
The sheath-core structural fiber 11 comprises a sheath layer 111 and a core layer 112 in sequence from outside to inside, the sheath layer 111 is made of polyethylene, and the dry heat shrinkage rate of the sheath layer 111 is 1.0-4.0%; the core layer 112 is made of high-shrinkage polyester fibers, the dry heat shrinkage rate of the core layer 112 is 20-40%, the core layer 112 and the skin layer 111 are combined through a composite spinning process, before the skin-core structural fibers 11 are subjected to melt processing, in any radial cross section of the skin-core structural fibers, the outer contour of the skin layer 111 is circular or oval, and the boundary contour of the skin layer 111 and the core layer 112 is circular or oval.
After the melting treatment is performed on the sheath-core structure fibers 11, the connecting portions of the sheath 111 are deformed and bonded, and a fluffy pore structure 12 is formed among a plurality of sheath-core structure fibers 11. After the nonwoven fabric 1 is subsequently subjected to the heating treatment, the outer peripheral surface of the skin layer 111 is formed with a plurality of wrinkles 113. The gram weight of the fiber web of the non-woven fabric 1 is 30-35 g/m2。
The working principle of the non-woven fabric is as follows: due to the existence of the wrinkles 113, the specific surface area and the porosity of the fluffy pore structure 12 are increased, the pore distribution is more uniform, and the pore size of the fluffy pore structure 12 is reduced; thereby improving the functions of the non-woven fabric 1 such as dispersion, interception, screening, trapping and the like of suspended particles in the carrier, and further improving the filtration efficiency and the filtration effect of the non-woven fabric 1.
Example 2: as shown in fig. 3, the multi-layer composite air filter material structure of the present invention comprises a base layer, a middle layer and a surface layer. The base layer is set to be a needle-punched non-woven filter felt layer 3, the middle layer is set to be an activated carbon fiber layer 2, the surface layer is set to be a non-woven fabric 1 as disclosed in embodiment 1, and the non-woven fabric 1 is set to be three layers so as to enhance the filtering efficiency of the non-woven fabric 1.
The working principle of the multilayer composite air filter material structure is as follows: the non-woven fabric 1 is used as a surface layer, and the specific surface area and the porosity of the fluffy pore structure 12 are increased by the folds, so that the pore distribution is more uniform, and the pore size of the fluffy pore structure 12 is reduced; thereby improving the functions of the surface layer non-woven fabric 1 such as dispersion, interception, screening, trapping and the like of suspended particles in the carrier, and further improving the filtration efficiency and the filtration effect of the non-woven fabric 1. The activated carbon fiber layer 2 is used as an intermediate layer for physically adsorbing pollutants. The needle-punched non-woven filter felt layer 3 is used as a base layer, has small pores and can prevent smaller particle pollution. Therefore, the multilayer composite air filter material structure has good filtering efficiency and filtering effect, can effectively prevent particle pollution and gaseous pollution, and is widely applied to normal-temperature filtering environments.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The non-woven fabric is characterized in that the non-woven fabric is formed by bonding a plurality of skin-core structural fibers (11) through a hot air bonding process, the skin-core structural fibers (11) are spiral, the skin-core structural fibers (11) comprise a skin layer (111) and a core layer (112), the skin layer (111) is made of polyethylene, the core layer (112) is made of high-shrinkage polyester fibers, and the core layer (112) and the skin layer (111) are combined through a composite spinning process; after the skin-core structure fiber (11) is subjected to melting treatment, the connecting part of the skin layer (111) is deformed and bonded, and a plurality of skin-core structure fibers (11) form a non-woven fabric with a fluffy pore structure (12); after the non-woven fabric is subjected to heating temperature rise treatment, a plurality of wrinkles (113) are formed on the outer peripheral surface of the skin layer (111).
2. A nonwoven according to claim 1, characterised in that the length of the sheath-core structural fibres (11) is 20-50 mm; the average fiber fineness of the skin-core structure fibers (11) is 0.05-20 denier.
3. The nonwoven fabric according to claim 1, wherein the dry heat shrinkage rate of the skin layer (111) is 1.0 to 4.0%, and the dry heat shrinkage rate of the core layer (112) is 20 to 40%.
4. The nonwoven fabric according to claim 1, wherein the sheath-core structured fiber (11) has an elongation at break of 3 to 10%.
5. The multilayer composite air filter material structure is characterized by comprising a base layer, a middle layer and a surface layer, wherein the base layer is provided with a needle-punched non-woven filter felt layer (3), the middle layer is provided with an activated carbon fiber layer (2), and the surface layer is provided with non-woven fabric (1); the non-woven fabric (1) comprises a plurality of skin-core structure fibers which are bonded together through a hot air bonding process, and a fluffy pore structure (12) is formed among the skin-core structure fibers (11); skin-core structural fiber includes cortex (111) and sandwich layer (112), cortex (111) are polyethylene, sandwich layer (112) are high shrink polyester fiber, the outer peripheral face of cortex (111) has a plurality of folds (113).
6. The multilayer composite air filter material structure according to claim 5, wherein the length of the skin-core structure fiber (11) is 20-50 mm; the average fiber fineness of the skin-core structure fibers (11) is 0.05-20 denier.
7. The multilayer composite air filter material structure of claim 5, wherein the skin layer (111) has a dry heat shrinkage of 1.0-4.0%, and the core layer (112) has a dry heat shrinkage of 20-40%.
8. The multilayer composite air filter material structure according to claim 5, wherein the sheath-core structure fiber (11) has an elongation at break of 3-10%.
9. The multilayer composite air filter material structure according to claim 5, wherein the fiber web gram weight of the non-woven fabric (1) is 30-35 g/m2。
10. The multilayer composite air filter structure according to claim 5, characterized in that the nonwoven (1) is provided in a plurality of layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020568361.7U CN212383335U (en) | 2020-04-16 | 2020-04-16 | Non-woven fabric and multi-layer composite air filter material structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020568361.7U CN212383335U (en) | 2020-04-16 | 2020-04-16 | Non-woven fabric and multi-layer composite air filter material structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212383335U true CN212383335U (en) | 2021-01-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020568361.7U Expired - Fee Related CN212383335U (en) | 2020-04-16 | 2020-04-16 | Non-woven fabric and multi-layer composite air filter material structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212383335U (en) |
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2020
- 2020-04-16 CN CN202020568361.7U patent/CN212383335U/en not_active Expired - Fee Related
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Granted publication date: 20210122 |