CN110876870A - Non-woven non-collodion cotton filter material and preparation method thereof - Google Patents
Non-woven non-collodion cotton filter material and preparation method thereof Download PDFInfo
- Publication number
- CN110876870A CN110876870A CN201910752398.7A CN201910752398A CN110876870A CN 110876870 A CN110876870 A CN 110876870A CN 201910752398 A CN201910752398 A CN 201910752398A CN 110876870 A CN110876870 A CN 110876870A
- Authority
- CN
- China
- Prior art keywords
- melting
- retardant polyester
- polyester staple
- flame
- point
- 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
Links
Classifications
-
- 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
- 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
Abstract
A nonwoven non-collodion filter material comprising: high-melting-point flame-retardant polyester staple fibers and low-melting-point flame-retardant polyester staple fibers; the flame-retardant polyester staple fiber with the high melting point and the flame-retardant polyester staple fiber with the low melting point are mixed according to the mass percentage ratio of (30-90%): (10-70%).
Description
Technical Field
The invention relates to the field of preparation of filter materials, in particular to a non-woven non-collodion filter material and a preparation method thereof.
Background
With the enhancement of environmental protection consciousness all over the world, various enterprises in China continuously develop new and more effective environmental protection materials. Wherein the filtration efficiency and the service life of the filter material are of the greatest concern for the respective manufacturer and user.
Nonwoven fabrics are currently not only used in more filtration applications, but also differ in product properties. The wet-process non-woven fabric is commonly used in the field of filtration of liquid, automobiles and the like, has better filtration efficiency and dust holding capacity, is beneficial to adding some functional fibers with high melting point and high temperature resistance, such as aramid, in the production process, can be used in special filtration environments, but has lower strength and stronger texture.
The needle-punched non-woven fabric is a filter material which is most popular in the field of filtering air dust and the like at present, has excellent dust holding capacity and better strength, can be directly prepared from polyimide, aromatic polyamide, polyphenylene sulfide, inorganic fiber and the like, has wide processing adaptability, but can only present a general better level on the filtering efficiency because the needle-punched process mainly adopts carding web formation and is difficult to adopt structural characteristics and specific factors determined by superfine fiber processing and consolidation modes below 1d, and after finishing or compositing is needed to improve the efficiency.
The non-woven fabric of the spray melting method is one of materials with the finest fibers (generally 1-4 mu m) in the non-woven fabric and uniform net formation, and has high shielding performance and filtering performance on tiny dust and bacteria. The higher quality melt-blown material can reach 97% -99% of the filtration efficiency of 0.3um dust, only has poor strength, and is difficult to be used alone in occasions with larger external force.
The spunbonded nonwoven fabric has superior strength performance compared with any other nonwoven fabric, even is close to woven fabric, has inferior net forming uniformity compared with other products, has a structure close to a two-dimensional state, and therefore, has poor filtering effect and dust holding capacity.
Therefore, there is a need for a new nonwoven non-collodion filter material and method of manufacture that overcomes the above-mentioned deficiencies.
Disclosure of Invention
The invention aims to provide a novel non-woven non-collodion cotton filter material with economic, flame-retardant, waterproof, oil-repellent, soil-release and other functions and a manufacturing method thereof.
In order to achieve the above object, according to an aspect of the present invention, there is provided a nonwoven non-collodion filter material comprising: high-melting-point flame-retardant polyester staple fibers and low-melting-point flame-retardant polyester staple fibers; the flame-retardant polyester staple fiber with the high melting point and the flame-retardant polyester staple fiber with the low melting point are mixed according to the mass percentage ratio of (30-90%): (10-70%).
In one embodiment of the invention, the melting point temperature of the high-melting-point flame-retardant polyester staple fiber is 245-255 ℃.
In one embodiment of the invention, the melting point temperature of the low-melting-point flame-retardant polyester staple fiber is 105-115 ℃.
In one embodiment of the invention, the fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9-18D; the fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5-12D.
In one embodiment of the invention, the fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9D, 5D, 12D, 15D and 18D, and 20% of each fiber fineness is adopted. That is, in the high melting point flame retardant polyester staple fibers, fibers having fiber finenesses of 0.9D, 5D, 12D, 15D, and 18D each account for 20% of the total amount of the high melting point flame retardant polyester staple fibers.
In one embodiment of the invention, the fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5D, 3D, 6D, 10D and 12D, and each fiber fineness is 20%. That is, in the low melting point flame retardant polyester staple fiber, the fibers having the fiber fineness of 1.5D, 3D, 6D, 10D, 12D each account for 20% of the total amount of the low melting point flame retardant polyester staple fiber.
In an embodiment of the present invention, the cross-sections of the high melting point flame-retardant polyester staple fiber and the low melting point flame-retardant polyester staple fiber are shaped as a special hollow.
In an embodiment of the present invention, the cross-sections of the high melting point flame-retardant polyester staple fiber and the low melting point flame-retardant polyester staple fiber are square, circular or triangular.
According to another aspect of the present invention, there is provided a method of making the above nonwoven non-collodion filter material, comprising:
mixing raw materials: the high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber are mixed according to the mass percentage ratio of (30-90%): (10-70%) are uniformly mixed;
obtaining the non-glue cotton: opening, carding and lapping the mixed raw materials, and then carrying out hot melting and shaping to obtain non-collodion cotton; wherein the temperature of hot melt shaping is 185-210 ℃; and the number of the first and second groups,
hot-melt spraying finishing: uniformly spraying a three-proofing finishing agent on the non-collodion cotton according to the mass percentage of 3-10%, and then baking and shaping to obtain the non-woven non-collodion cotton filtering material; wherein the baking and shaping temperature is 150-180 ℃.
In one embodiment of the invention, the melting point temperature of the high-melting-point flame-retardant polyester staple fiber is 245-255 ℃; the melting point temperature of the low-melting-point flame-retardant polyester staple fiber is 105-115 ℃.
It will be understood by those skilled in the art that each of the reagents described herein is commercially available, unless otherwise specified. For example, the high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber used in the invention are sold and can be obtained through the following methods: the flame-retardant polyester chips prepared by copolycondensation reaction of phosphorus-based copolymerization flame retardants, purified terephthalic acid and ethylene glycol are prepared into high-melting-point flame-retardant polyester staple fibers and low-melting-point flame-retardant polyester staple fibers by a chemical fiber spinning process. The raw material is characterized in that the flame-retardant group segments are polymerized on a fiber molecular chain, the flame-retardant fiber is different from post-finishing type flame-retardant fibers, is not afraid of washing, has permanent and stable flame-retardant function, is nontoxic and odorless, does not generate toxic or harmful gas during combustion, and does not cause environmental pollution. In addition, the three-proofing finishing agent is a conventional agent known in the field, and any finishing agent capable of enabling the fibers to have the functions of flame retardance, water resistance, oil resistance and the like is a suitable three-proofing finishing agent.
Because the non-woven non-collodion cotton filter material of the invention adopts two kinds of fibers with different melting points, in the preparation method of the invention, the low-melting-point flame-retardant polyester staple fiber is firstly melted in the step of obtaining the non-collodion cotton and is completely melted or integrated with the high-melting-point flame-retardant polyester staple fiber. Therefore, the preparation method of the invention completely does not need glue adhesion and has no formaldehyde.
The invention provides a non-glue filter cotton prepared from flame-retardant polyester staple fibers with different melting points by a non-woven non-glue hot melting process, and the obtained non-glue filter cotton has a good flame-retardant function, is stable and durable in flame-retardant performance and reaches the standard of national standard (GB/T17591-2006). Therefore, the non-collodion cotton filter material has the advantages of no formaldehyde, no peculiar smell, no toxicity and the like, and is safe and environment-friendly to use. Meanwhile, the three-proofing finishing agent is utilized to enable the filtering material to have the functions of water resistance, oil repellency, easy decontamination and the like, the surface cleanliness of the material can be effectively improved, stains are reduced, the ventilation and air permeability are good, the filtering material is easy to clean and durable, and the service life of the product is greatly prolonged. Therefore, the filter material has wide application, and can be used as a primary air filter material for household appliances, chemical industry, medicine, food, grain and oil, and vehicles such as airplanes, trains, motor cars and high-speed rails.
Detailed Description
Hereinafter, the technique of the present invention will be described in detail with reference to specific embodiments. It should be understood that the following detailed description is only for the purpose of assisting those skilled in the art in understanding the present invention, and is not intended to limit the present invention.
Example 1
In this embodiment, there is provided a nonwoven non-collodion filter material comprising: the flame-retardant polyester staple fiber with the high melting point and the low melting point, wherein the melting point temperature of the flame-retardant polyester staple fiber is 245-255 ℃, and the melting point temperature of the flame-retardant polyester staple fiber with the low melting point is 105-115 ℃. The high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber are mixed in a mass percentage ratio of (30-90%): (10-70%). The fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9D, 5D, 12D, 15D and 18D, and 20 percent of each fiber. The fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5D, 3D, 6D, 10D and 12D, and the fiber fineness is 20 percent respectively.
The specific preparation method of the non-woven non-collodion cotton filter material comprises the following steps:
(1) proportioning and selecting raw materials: uniformly mixing the high-melting-point flame-retardant polyester staple fibers and the low-melting-point flame-retardant polyester staple fibers in proportion;
considering that the non-glue cotton has good elasticity and fluffiness, the fiber sections of the high-melting point flame-retardant polyester staple fiber and the low-melting point flame-retardant polyester staple fiber are in a heterosexual hollow state, and the heterosexual hollow state can be square, circular or triangular.
(2) The hot melting glue-free process comprises the following steps: opening, carding and lapping the high-melting point and low-melting point flame-retardant polyester staple fiber mixture obtained in the step (1) on non-woven equipment, and then entering a hot-melting setting area to obtain non-glue cotton, wherein the hot-melting setting temperature is 185-210 ℃;
in the reaction, the low-melting-point flame-retardant polyester staple fiber is firstly melted and is completely melted or integrated with the high-melting-point flame-retardant polyester staple fiber, and glue is not needed for bonding, so that the process is called a glue-free process, and formaldehyde does not exist;
(3) one-step method of hot-melt spraying finishing: and (3) uniformly spraying an SK-7600A three-proofing finishing agent (Spanish) on the non-glue cotton obtained in the step (2) according to the mass percentage of 3% -10%, and then, entering a pre-drying area, wherein the temperature of the pre-drying area is 100-120 ℃, and the baking and shaping temperature is 150-180 ℃, so that the required non-glue filter cotton material with the functions of flame retardance, water resistance, oil resistance and easy decontamination is prepared.
In the reaction, a one-step spraying process is adopted on the processing equipment, after the non-collodion cotton in the step (2) is formed, a spraying device is arranged on the same equipment, and 3% -10% of the three-proofing finishing agent is uniformly sprayed on the non-collodion cotton.
Example 2
In this embodiment, there is provided a nonwoven non-collodion filter material comprising: the flame-retardant polyester staple fiber with the high melting point and the low melting point, wherein the melting point temperature of the flame-retardant polyester staple fiber is 245-255 ℃, and the melting point temperature of the flame-retardant polyester staple fiber with the low melting point is 105-115 ℃. The high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber are mixed in a mass percentage ratio of 40%: 60 percent. The fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9D, 5D, 12D, 15D and 18D, and 20 percent of each fiber. The fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5D, 3D, 6D, 10D and 12D, and the fiber fineness is 20 percent respectively.
The specific preparation method of the non-woven non-collodion cotton filter material comprises the following steps:
(1) proportioning and selecting raw materials: uniformly mixing the high-melting-point flame-retardant polyester staple fibers and the low-melting-point flame-retardant polyester staple fibers in proportion;
considering that the non-glue cotton has good elasticity and fluffiness, the fiber sections of the high-melting point flame-retardant polyester staple fiber and the low-melting point flame-retardant polyester staple fiber are in a heterosexual hollow state, and the heterosexual hollow state can be square, circular or triangular.
(2) The hot melting glue-free process comprises the following steps: opening, carding and lapping the high-melting point and low-melting point flame-retardant polyester staple fiber mixture obtained in the step (1) on non-woven equipment, and then entering a hot-melting setting area to obtain non-glue cotton, wherein the hot-melting setting temperature is 200 ℃;
in the reaction, the low-melting-point flame-retardant polyester staple fiber is firstly melted and is completely melted or integrated with the high-melting-point flame-retardant polyester staple fiber, and glue is not needed for bonding, so that the process is called a glue-free process, and formaldehyde does not exist;
(3) one-step method of hot-melt spraying finishing: and (3) uniformly spraying an SK-7600A three-proofing finishing agent (Spanish) on the non-glue cotton obtained in the step (2) according to the proportion of 5% by mass, and then, entering a pre-drying area, wherein the temperature of the pre-drying area is 110 ℃, and the baking and forming temperature is 160 ℃, so that the required non-glue filter cotton material with the functions of flame retardance, water resistance, oil resistance and easy decontamination is prepared.
In the reaction, a one-step spraying process is adopted on the processing equipment, and after the non-collodion cotton in the step (2) is formed, a spraying device is installed on the same equipment, and 5% of the three-proofing finishing agent is uniformly sprayed on the non-collodion cotton.
Example 3
In this embodiment, there is provided a nonwoven non-collodion filter material comprising: the flame-retardant polyester staple fiber with the high melting point and the low melting point, wherein the melting point temperature of the flame-retardant polyester staple fiber is 245-255 ℃, and the melting point temperature of the flame-retardant polyester staple fiber with the low melting point is 105-115 ℃. The high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber are mixed in a mass percentage ratio of 30%: 70 percent. The fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9D, 5D, 12D, 15D and 18D, and 20 percent of each fiber. The fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5D, 3D, 6D, 10D and 12D, and the fiber fineness is 20 percent respectively.
The specific preparation method of the non-woven non-collodion cotton filter material comprises the following steps:
(1) proportioning and selecting raw materials: uniformly mixing the high-melting-point flame-retardant polyester staple fibers and the low-melting-point flame-retardant polyester staple fibers in proportion;
considering that the non-glue cotton has good elasticity and fluffiness, the fiber sections of the high-melting point flame-retardant polyester staple fiber and the low-melting point flame-retardant polyester staple fiber are in a heterosexual hollow state, and the heterosexual hollow state can be square, circular or triangular.
(2) The hot melting glue-free process comprises the following steps: opening, carding and lapping the high-melting point and low-melting point flame-retardant polyester staple fiber mixture obtained in the step (1) on non-woven equipment, and then entering a hot-melting setting area to obtain non-glue cotton, wherein the hot-melting setting temperature is 190 ℃;
in the reaction, the low-melting-point flame-retardant polyester staple fiber is firstly melted and is completely melted or integrated with the high-melting-point flame-retardant polyester staple fiber, and glue is not needed for bonding, so that the process is called a glue-free process, and formaldehyde does not exist;
(3) one-step method of hot-melt spraying finishing: and (3) uniformly spraying the SK-7600A three-proofing finishing agent (Spanish) on the non-glue cotton obtained in the step (2) according to the proportion of 7% by mass, and then, entering a pre-drying area, wherein the temperature of the pre-drying area is 100 ℃, and the baking and forming temperature is 150 ℃, so that the required non-glue filter cotton material with the functions of flame retardance, water resistance, oil resistance and easy decontamination is prepared.
In the reaction, a one-step spraying process is adopted on the processing equipment, and after the non-collodion cotton in the step (2) is formed, a spraying device is installed on the same equipment, and 7 percent of the three-proofing finishing agent is uniformly sprayed on the non-collodion cotton.
The invention provides a non-glue filter cotton prepared from flame-retardant polyester staple fibers with different melting points by a non-woven non-glue hot melting process, and the obtained non-glue filter cotton has a good flame-retardant function, is stable and durable in flame-retardant performance and reaches the standard of national standard (GB/T17591-2006). Therefore, the non-collodion cotton filter material has the advantages of no formaldehyde, no peculiar smell, no toxicity and the like, and is safe and environment-friendly to use. Meanwhile, the three-proofing finishing agent is utilized to enable the filtering material to have the functions of water resistance, oil repellency, easy decontamination and the like, the surface cleanliness of the material can be effectively improved, stains are reduced, the ventilation and air permeability are good, the filtering material is easy to clean and durable, and the service life of the product is greatly prolonged. Therefore, the filter material has wide application, and can be used as a primary air filter material for household appliances, chemical industry, medicine, food, grain and oil, and vehicles such as airplanes, trains, motor cars and high-speed rails.
The present invention has been described in relation to the above embodiments, which are only exemplary of the implementation of the present invention. It must be noted that the disclosed embodiments do not limit the scope of the invention. Rather, modifications and equivalent arrangements included within the spirit and scope of the claims are included within the scope of the invention.
Claims (10)
1. A nonwoven non-collodion filter material, wherein the nonwoven non-collodion filter material comprises: high-melting-point flame-retardant polyester staple fibers and low-melting-point flame-retardant polyester staple fibers; the flame-retardant polyester staple fiber with the high melting point and the flame-retardant polyester staple fiber with the low melting point are mixed according to the mass percentage ratio of (30-90%): (10-70%).
2. The non-woven non-collodion cotton filter material of claim 1, wherein the high-melting-point flame-retardant polyester staple fiber has a melting point temperature of 245-255 ℃.
3. The non-woven non-collodion cotton filter material of claim 1, wherein the low-melting flame-retardant polyester staple fiber has a melting point temperature of 105-115 ℃.
4. The non-woven non-collodion cotton filter material of claim 1, wherein the fiber fineness of the high-melting-point flame-retardant polyester staple fiber is 0.9-18D; the fiber fineness of the low-melting-point flame-retardant polyester staple fiber is 1.5-12D.
5. The non-woven non-collodion filter material of claim 4, wherein the high-melting flame-retardant polyester staple fibers have a fiber fineness of 0.9D, 5D, 12D, 15D, 18D, each 20%.
6. The non-woven non-collodion filter material of claim 4, wherein the low-melting flame-retardant polyester staple fibers have a fiber fineness of 1.5D, 3D, 6D, 10D, 12D, each 20%.
7. The non-woven non-collodion cotton filter material of claim 1, wherein the cross-section of the high-melting-point flame-retardant polyester staple fiber and the cross-section of the low-melting-point flame-retardant polyester staple fiber are shaped as a special hollow.
8. The nonwoven collodion-free filtration material of claim 7, wherein the cross-section of the fibers of the high-melting-point flame-retardant polyester staple fibers and the cross-section of the fibers of the low-melting-point flame-retardant polyester staple fibers are square, circular or triangular.
9. A method of making the nonwoven non-collodion filter of claim 1, comprising:
mixing raw materials: the high-melting-point flame-retardant polyester staple fiber and the low-melting-point flame-retardant polyester staple fiber are mixed according to the mass percentage ratio of (30-90%): (10-70%) are uniformly mixed;
obtaining the non-glue cotton: opening, carding and lapping the mixed raw materials, and then carrying out hot melting and shaping to obtain non-collodion cotton; wherein the temperature of hot melt shaping is 185-210 ℃; and the number of the first and second groups,
hot-melt spraying finishing: uniformly spraying a three-proofing finishing agent on the non-collodion cotton according to the mass percentage of 3-10%, and then baking and shaping to obtain the non-woven non-collodion cotton filtering material; wherein the baking and shaping temperature is 150-180 ℃.
10. The method of claim 11, wherein the melting point temperature of the high-melting-point flame-retardant polyester staple fiber is 245-255 ℃; the melting point temperature of the low-melting-point flame-retardant polyester staple fiber is 105-115 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752398.7A CN110876870A (en) | 2019-08-15 | 2019-08-15 | Non-woven non-collodion cotton filter material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910752398.7A CN110876870A (en) | 2019-08-15 | 2019-08-15 | Non-woven non-collodion cotton filter material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110876870A true CN110876870A (en) | 2020-03-13 |
Family
ID=69727477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910752398.7A Pending CN110876870A (en) | 2019-08-15 | 2019-08-15 | Non-woven non-collodion cotton filter material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110876870A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406662A (en) * | 2020-11-16 | 2021-02-26 | 佩尔哲汽车内饰系统(太仓)有限公司 | Automotive carpet sound insulation pad and forming method thereof |
| CN112877907A (en) * | 2020-12-31 | 2021-06-01 | 苏州爱美纤维科技有限公司 | Nonwoven material and method of making same |
| CN115652652A (en) * | 2022-11-14 | 2023-01-31 | 东华大学 | Smoke filtering type flame-retardant warm-keeping flocculus and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053879B1 (en) * | 1980-11-12 | 1986-03-26 | Toyo Boseki Kabushiki Kaisha | Filter elements and processes for the production thereof |
| CN102343185A (en) * | 2010-08-04 | 2012-02-08 | 上海洁润丝新材料股份有限公司 | Non-glue cotton nonwoven filtering material and its preparation method |
| CN102485312A (en) * | 2010-12-06 | 2012-06-06 | 上海洁润丝新材料股份有限公司 | Collodion-free nonwoven filtering material containing bamboo charcoal fiber and its preparation method |
-
2019
- 2019-08-15 CN CN201910752398.7A patent/CN110876870A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0053879B1 (en) * | 1980-11-12 | 1986-03-26 | Toyo Boseki Kabushiki Kaisha | Filter elements and processes for the production thereof |
| CN102343185A (en) * | 2010-08-04 | 2012-02-08 | 上海洁润丝新材料股份有限公司 | Non-glue cotton nonwoven filtering material and its preparation method |
| CN102485312A (en) * | 2010-12-06 | 2012-06-06 | 上海洁润丝新材料股份有限公司 | Collodion-free nonwoven filtering material containing bamboo charcoal fiber and its preparation method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112406662A (en) * | 2020-11-16 | 2021-02-26 | 佩尔哲汽车内饰系统(太仓)有限公司 | Automotive carpet sound insulation pad and forming method thereof |
| CN112877907A (en) * | 2020-12-31 | 2021-06-01 | 苏州爱美纤维科技有限公司 | Nonwoven material and method of making same |
| CN112877907B (en) * | 2020-12-31 | 2022-04-15 | 苏州爱美纤维科技有限公司 | Nonwoven material and method of making same |
| CN115652652A (en) * | 2022-11-14 | 2023-01-31 | 东华大学 | Smoke filtering type flame-retardant warm-keeping flocculus and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110876870A (en) | Non-woven non-collodion cotton filter material and preparation method thereof | |
| CN102343185A (en) | Non-glue cotton nonwoven filtering material and its preparation method | |
| EP1326697B1 (en) | Filter structure with two or more layers of fine fiber having extended useful service life | |
| CN103696127A (en) | Montmorillonite/isotactic polypropylene/polylactic acid composite sound absorbing cotton and preparation method thereof | |
| JP2013076182A (en) | Polyester filament nonwoven fabric and method for manufacturing the same | |
| CN105771427A (en) | Electret non-woven filter material for air filtering | |
| CN102485312A (en) | Collodion-free nonwoven filtering material containing bamboo charcoal fiber and its preparation method | |
| CN103657254A (en) | Filter material and production method and application thereof | |
| CN106012296A (en) | Composite non-woven filter material and preparation method thereof | |
| CN112111853A (en) | Ultra-filtration embossed melt-blown non-woven fabric and preparation method thereof | |
| CN110062827A (en) | The manufacturing method of motor vehicle equipment semi-finished product | |
| CN112981701A (en) | Multilayer melt-blown non-woven fabric and preparation method thereof | |
| CN108914590B (en) | Preparation method of thin flame-retardant non-woven fabric for vehicle | |
| CN103785225B (en) | The fire-retardant easy decontamination filtering material of multicomponent and the preparation method of non-woven filter material | |
| CN102912651A (en) | Impregnated-type non-woven fabric and manufacturing method thereof | |
| CN105063779B (en) | A kind of chemical resistance composite monofilament and preparation method thereof | |
| CN207855076U (en) | A kind of efficient haze mask | |
| CN110499586B (en) | Electrostatic cotton material and preparation method and application thereof | |
| JP2006098890A (en) | Sound-deadening material and manufacturing method thereof | |
| CN111058190A (en) | Packaging material, preparation method thereof and composite packaging material | |
| JPH11137930A (en) | Heat-resistant filter material | |
| CN213866712U (en) | Non-woven filter material containing electret spunbond layer and melt-blown layer | |
| KR20160143860A (en) | Nonwoven fibrous structures including phenolic resin and ionic reinforcement material, and methods | |
| KR101012401B1 (en) | Air filter comprising a staple fiber non-woven support with high an air-permeability and Method of preparing the same | |
| CN208201298U (en) | A kind of degradable magnetic polylactic acid clean wiping cloth |
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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200313 |
|
| WD01 | Invention patent application deemed withdrawn after publication |