CN116200877A - Manufacturing method of washable flame-retardant filter material - Google Patents
Manufacturing method of washable flame-retardant filter material Download PDFInfo
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- CN116200877A CN116200877A CN202310026245.0A CN202310026245A CN116200877A CN 116200877 A CN116200877 A CN 116200877A CN 202310026245 A CN202310026245 A CN 202310026245A CN 116200877 A CN116200877 A CN 116200877A
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- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 239000003063 flame retardant Substances 0.000 title claims abstract description 92
- 239000000463 material Substances 0.000 title claims abstract description 62
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000835 fiber Substances 0.000 claims abstract description 157
- 229920000742 Cotton Polymers 0.000 claims abstract description 45
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 38
- 238000001035 drying Methods 0.000 claims abstract description 17
- 238000009960 carding Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 10
- 108010081750 Reticulin Proteins 0.000 claims abstract description 9
- 238000002844 melting Methods 0.000 claims abstract description 8
- 230000008018 melting Effects 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000001914 filtration Methods 0.000 description 22
- 238000009423 ventilation Methods 0.000 description 9
- 238000005406 washing Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 5
- 230000035699 permeability Effects 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/541—Composite fibres, e.g. sheath-core, sea-island or side-by-side; Mixed fibres
- D04H1/5418—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/542—Adhesive fibres
- D04H1/544—Olefin series
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
- D04H1/558—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in combination with mechanical or physical treatments other than embossing
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Filtering Materials (AREA)
Abstract
The invention provides a manufacturing method of a washable flame-retardant filter material, which comprises the following steps: s1, mixing at least one kind of thick and thin ES fibers and at least one kind of thick and thin flame-retardant fibers through a rotary stirring roller; s2, opening the mixed fibers in the step 1 through an opening roller of an opener; s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and the cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer; s4, uniformly paving the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying the bottom curtain through a high-temperature drying channel to obtain a hard cotton non-woven fabric coiled material with a fluffy structure and a thickness of 6-8 mm; s5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller, and pressurizing the hard cotton non-woven fabric coiled material to bond the fiber surface of the hard cotton non-woven fabric coiled material so that the thickness of the hard cotton non-woven fabric coiled material is changed into 2-4mm. The flame-retardant filter material manufactured by the method has good water-resistant and flame-retardant effects.
Description
Technical Field
The invention belongs to the technical field of non-woven filter materials, and particularly relates to a manufacturing method of a washable flame-retardant filter material.
Background
When the currently used filter material reaches the service life, the filtering performance of the filter material is greatly reduced once the filter material is washed or rinsed by water, all the performance parameters are reduced, and the filter is seriously and directly scrapped. Methods of replacing filter media are often used to ensure air cleanliness. This causes a great waste of resources.
In the places where fire accidents are easy to occur, the flame retardant property of the filter material is an important index. The current method for increasing the flame retardant effect comprises the following steps: post-treatment adds a flame retardant; flame retardant fibers are added during carding. With the continuous progress of science and technology, new varieties of high-temperature resistant flame retardant fibers and antibacterial agents are layered, but the development and application of flame retardant filter materials are less at present.
Disclosure of Invention
The invention aims to solve the following technical problems: a method for producing a washable flame retardant filter material is provided.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing at least one thick and thin ES fiber and at least one thick and thin flame-retardant fiber through a rotary stirring roller;
s2, opening the mixed fibers in the step 1 through an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and the cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying the reticular fiber thin layer through a high-temperature drying channel to obtain a hard cotton non-woven fabric coiled material with a fluffy structure and a thickness of 6-8 mm;
s5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller, and pressurizing the hard cotton non-woven fabric coiled material to bond the fiber surface and the fiber surface to be 2-4mm thick.
As a preferable technical scheme, in step 1, the ES fiber with the thickness of 4D, the flame-retardant fiber with the thickness of 3D, and the flame-retardant fiber with the thickness of 8D are mixed by a rotary stirring roller according to the following weight parts: 4.5-5.5 parts of 4D ES fiber, 1.5-2.5 parts of 3D flame-retardant fiber and 2.5-3.5 parts of 8D flame-retardant fiber; the weight parts of the 4D ES fiber, the 3D flame-retardant fiber and the 8D flame-retardant fiber are preferably as follows: 5 parts of 4D ES fibers, 2 parts of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers.
As a preferable embodiment, in step 1, the ES fiber with a thickness of 2D, the ES fiber with a thickness of 4D, the flame-retardant fiber with a thickness of 3D, and the flame-retardant fiber with a thickness of 8D are mixed by a rotary stirring roller according to the following weight portions: 1.5-2.5 parts of 2D ES fibers, 4.5-5.5 parts of 4D ES fibers, 0.5-1.5 parts of 3D flame-retardant fibers and 2.5-3.5 parts of 8D flame-retardant fibers; the weight parts of the 2D ES fibers, the 4D ES fibers, the 3D flame retardant fibers and the 8D flame retardant fibers are preferably as follows: 2 parts of 2D ES fibers, 4 parts of 4D ES fibers, 1 part of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers.
As a preferable technical scheme, in the step 5, the running speed of the hard cotton non-woven fabric coiled material is 4-10m/min.
As a preferable technical scheme, in the step 5, the heating temperature of the heating roller is 110-140 ℃.
As a preferred technical scheme, in the step 1, the rotating speed of the mixer is 300-600r/min, and particularly, the rotating speed of the mixer is preferably 350-580 r/min.
As a preferred embodiment, in step 2, the opening roller rotation speed is 500-900r/min, and in particular, the opening roller rotation speed is preferably 450-850 r/min.
As a preferred embodiment, in step 3, the cotton feeder speed is 10-25m/min, in particular 15-25 m/min.
As a preferred embodiment, in step 4, the high temperature drying tunnel temperature is 130-250 ℃, particularly preferably 150-230 ℃.
After the technical scheme is adopted, the invention has the following advantages:
according to the manufacturing method of the washable flame-retardant filter material, when the produced flame-retardant filter material reaches the service life, good filtration resistance and filtration efficiency can be ensured by washing for a plurality of times, the waste of resources is effectively avoided, and the service life of the filter is greatly prolonged; the temperature above 200 ℃ does not generate open fire, can still maintain good filtration efficiency in a high-temperature environment, and ensures safety.
Detailed Description
The present invention will be described in further detail with reference to specific examples.
Example 1
A method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing the ES fiber with the thickness of 4D, the flame-retardant fiber with the thickness of 3D and the flame-retardant fiber with the thickness of 8D by a rotary stirring roller according to the following parts by weight: 5 parts of 4D ES fibers, 2 parts of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers;
ES of ES fibers is an abbreviation of "ethylene-propylene-based fibers" and is one of polyolefin-based fibers. As a novel thermal bonding composite fiber, ES fiber has been highly evaluated in the world. After the ES fibers are heat-treated, the fibers are bonded to each other to form a nonwoven fabric molded body without using a binder. After the ES fibers are heat treated, the fibers are mutually adhered to form a non-woven fabric formed body without adhesive, and the non-woven fabric formed body is particularly suitable for producing products such as sanitary materials, thermal fillers, filter materials and the like by a hot air penetrating process.
The flame-retardant fiber is a novel high-technology fiber material with flame-retardant and anti-dripping properties, which is developed on the basis of the national '863' planned research result. The product adopts a new generation fiber flame-retardant technology, namely a sol-gel technology, so that the inorganic high molecular flame retardant exists in a nano state or an interpenetrating network state in the organic macromolecule of the viscose fiber, thereby not only ensuring the excellent physical properties of the fiber, but also realizing the characteristics of low smoke, no toxicity, no peculiar smell, no melting and dripping, and the like. The fiber and the textile have the effects of flame retardance, heat insulation and molten drop resistance, the application performance, the safety performance and the added value of the fiber and the textile are greatly improved, and the fiber and the textile can be widely applied to the fields of civil use, industry, military use and the like.
D represents the denier (D), also known as "denier" or (denier), of a fiber, which means the gram of weight of 9000 meters of yarn or fiber at a given moisture regain, which is also the unit of length, the greater the denier the greater the yarn or fiber.
S2, opening the mixed fibers in the step 1 through an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and a photoelectric controlled cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying through a high-temperature drying tunnel with the length of 8 meters to obtain a hard cotton non-woven fabric coiled material with a fluffy structure;
in the step 4, the physical properties of the obtained hard cotton non-woven fabric coiled material are as follows: the gram weight is 300+/-30 g/square meter, the thickness is 7+/-1 mm, the transverse stiffness is 3000-4000mg, the longitudinal stiffness is 4000-5000mg, the air permeability is 1800-2200L/square meter/s, and the filtering efficiency is more than 40%.
S5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller at 110-140 ℃ at the running speed of 4-10m/min, adjusting the two ends of the rubber roller to 0.9mm and 1mm, and pressurizing and bonding the hard cotton non-woven fabric coiled material to enable the thickness of the hard cotton non-woven fabric coiled material to be 4mm.
In the step 5, the transverse stiffness of the finally obtained washable flame-retardant filter material is improved to 4000-6000mg; the longitudinal stiffness is raised to 5000-6000mg; the ventilation is reduced to 1600-1800L per square meter per second; the filtration efficiency is improved to 70-75%. The product has the following effects: after 4 times of water washing, the ventilation and filtration efficiency are not obviously changed.
Example 2
A method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing the ES fiber with the thickness of 4D, the flame-retardant fiber with the thickness of 3D and the flame-retardant fiber with the thickness of 8D by a rotary stirring roller according to the following parts by weight: 5 parts of 4D ES fibers, 2 parts of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers;
s2, opening the mixed fibers in the step 1 through an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and a photoelectric controlled cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying through a high-temperature drying tunnel with the length of 8 meters to obtain a hard cotton non-woven fabric coiled material with a fluffy structure;
in the step 4, the physical properties of the obtained hard cotton non-woven fabric coiled material are as follows: the gram weight is 300+/-30 g/square meter, the thickness is 7+/-1 mm, the transverse stiffness is 3000-4000mg, the longitudinal stiffness is 4000-5000mg, the air permeability is 1800-2200L/square meter/s, and the filtering efficiency is more than 40%.
S5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller at 110-140 ℃ at the running speed of 4-10m/min, adjusting the two ends of the rubber roller to 0.8mm and 0.9mm, and pressurizing and bonding the hard cotton non-woven fabric coiled material to enable the thickness of the hard cotton non-woven fabric coiled material to be 3mm.
In the step 5, the transverse stiffness of the finally obtained washable flame-retardant filter material is increased to 5000-7000mg; the longitudinal stiffness is raised to 6000-8000mg; the ventilation is reduced to 1300-1700L per square meter per second; the filtration efficiency is improved to 75-80%. The product has the following effects: after 4 times of water washing, the ventilation and filtration efficiency are not obviously changed.
Example 3
A method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing the ES fiber with the thickness of 4D, the flame-retardant fiber with the thickness of 3D and the flame-retardant fiber with the thickness of 8D by a rotary stirring roller according to the following parts by weight: 5 parts of 4D ES fibers, 2 parts of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers;
s2, opening the mixed fibers in the step 1 through an opening roller of an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and a photoelectric controlled cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying through a high-temperature drying tunnel with the length of 8 meters to obtain a hard cotton non-woven fabric coiled material with a fluffy structure;
in the step 4, the physical properties of the obtained hard cotton non-woven fabric coiled material are as follows: the gram weight is 300+/-30 g per square meter, the thickness is 7+/-1 mm, the transverse stiffness is 3000-4000mg, the longitudinal stiffness is 4000-5000mg, the air permeability is 1800-2200L per square meter per second, and the filtering efficiency is more than 40%.
S5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller at 110-140 ℃ at the running speed of 4-10m/min, adjusting the two ends of the rubber roller to 0.7mm and 0.8mm, pressurizing the hard cotton non-woven fabric coiled material to bond, and changing the thickness of the hard cotton non-woven fabric coiled material to 2mm.
In the step 5, the transverse stiffness of the finally obtained washable flame-retardant filter material is improved to 6000-7000mg; the longitudinal stiffness is improved to 7000-8000mg; the ventilation is reduced to 1200-1500L per square meter per second; the filtration efficiency is improved to 80-85%. The product has the following effects: after 4 times of water washing, the ventilation and filtration efficiency are not obviously changed.
Example 4
A method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing the ES fiber with the thickness of 2D, the ES fiber with the thickness of 4D, the flame-retardant fiber with the thickness of 3D and the flame-retardant fiber with the thickness of 8D by a rotary stirring roller according to the following weight parts: 2 parts of 2D ES fibers, 5 parts of 4D ES fibers, 1 part of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers;
s2, opening the mixed fibers in the step 1 through an opening roller of an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and a photoelectric controlled cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying through a high-temperature drying tunnel with the length of 8 meters to obtain a hard cotton non-woven fabric coiled material with a fluffy structure;
in the step 4, the physical properties of the obtained hard cotton non-woven fabric coiled material are as follows: the gram weight is 300+/-30 g/square meter, the thickness is 7+/-1 mm, the transverse stiffness is 6000-8000mg, the longitudinal stiffness is 4000-5000mg, the ventilation is 1700-2100L/square meter/s, and the filtering efficiency is high: > 40%.
S5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller at 110-140 ℃ at the running speed of 4-10m/min, adjusting the two ends of the rubber roller to 0.7mm and 0.8mm, and pressurizing and bonding the hard cotton non-woven fabric coiled material to enable the thickness of the hard cotton non-woven fabric coiled material to be 2mm.
In the step 5, the transverse stiffness of the finally obtained washable flame-retardant filter material is improved to 6000-7000mg; the longitudinal stiffness is improved to 7000-8000mg; the ventilation is reduced to 1000-1400L per square meter per second; the filtration efficiency is improved to 80-90%. The product has the following effects: after 4 times of water washing, the ventilation and filtration efficiency are not obviously changed.
In summary, when the flame-retardant filter material reaches the service life, the good filtering resistance and filtering efficiency can be ensured by washing for a plurality of times, the waste of resources is effectively avoided, and the service life of the filter is greatly prolonged; the temperature above 200 ℃ does not generate open fire, can still maintain good filtration efficiency in a high-temperature environment, and ensures safety.
The flame-retardant fibers with different deniers and the ES fibers are mixed by a mixing opener, carded into a web and dried by a drying room to form a roll, so that the flame-retardant effect is ensured, and the filter material with the filtering precision of more than 5 mu m and the efficiency of more than 80% is formed. And the resistance after four times of water washing is not obviously improved.
The flame-retardant effect of the product reaches the B1 grade under the GB8624-1997 standard, the filtering effect is more than 80% under the condition that the filtering precision is more than 5 mu m, and the resistance and the efficiency are not obviously changed after ash is removed by a high-pressure water gun and an air gun after four times of ash absorption.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which is defined in the appended claims.
Claims (9)
1. A method for manufacturing a washable flame retardant filter material, comprising the steps of:
s1, mixing at least one thick and thin ES fiber and at least one thick and thin flame-retardant fiber through a mixer;
s2, opening the mixed fibers in the step 1 through an opening roller of an opener;
s3, uniformly conveying the fibers opened in the step 2 to a carding machine through a vibrating plate and the cotton feeder, and carding raw material fibers to form a single fiber state to form a netlike fiber thin layer;
s4, uniformly laying the reticular fiber thin layer obtained in the step 3 on a bottom curtain through a lapping machine, and drying the reticular fiber thin layer through a high-temperature drying channel to obtain a hard cotton non-woven fabric coiled material with a fluffy structure and a thickness of 6-8 mm;
s5, melting the fiber surface of the hard cotton non-woven fabric coiled material with the fluffy structure obtained in the step 4 through a heating roller, and pressurizing the hard cotton non-woven fabric coiled material to bond the fiber surface of the hard cotton non-woven fabric coiled material so that the thickness of the hard cotton non-woven fabric coiled material is changed into 2-4mm.
2. The method for producing a washable flame retardant filter according to claim 1, wherein in step 1, ES fibers having a thickness of 4D, flame retardant fibers having a thickness of 3D, and flame retardant fibers having a thickness of 8D are mixed by a rotary stirring roller in the following parts by weight: 4.5-5.5 parts of 4D ES fiber, 1.5-2.5 parts of 3D flame-retardant fiber and 2.5-3.5 parts of 8D flame-retardant fiber; the weight parts of the 4D ES fiber, the 3D flame-retardant fiber and the 8D flame-retardant fiber are preferably as follows: 5 parts of 4D ES fibers, 2 parts of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers.
3. The method for producing a washable flame retardant filter according to claim 1, wherein in step 1, 2D thick ES fibers, 4D thick ES fibers, 3D thick flame retardant fibers, and 8D thick flame retardant fibers are mixed by a rotating stirring roller in the following parts by weight: 1.5-2.5 parts of 2D ES fiber; 4.5-5.5 parts of 4D ES fiber, 0.5-1.5 parts of 3D flame-retardant fiber and 2.5-3.5 parts of 8D flame-retardant fiber; the weight parts of the 2D ES fibers, the 4D ES fibers, the 3D flame retardant fibers and the 8D flame retardant fibers are preferably as follows: 2 parts of 2D ES fibers, 4 parts of 4D ES fibers, 1 part of 3D flame-retardant fibers and 3 parts of 8D flame-retardant fibers.
4. The method for producing a washable flame retardant filter according to claim 1, wherein in step 5, the running speed of the hard cotton nonwoven fabric web is 4-15m/min.
5. The method for producing a washable, flame retardant filter of claim 1, wherein in step 5, the heating temperature of the heated roll is 110-140 ℃.
6. The method for producing a washable flame retardant filter according to claim 1, wherein in step 1, the rotational speed of the mixer is 300-600r/min, in particular the rotational speed of the mixer is preferably 350-580 r/min.
7. The method for producing a washable flame retardant filter according to claim 1, wherein in step 2, the opening roller rotation speed is 500-900r/min, in particular, the opening roller rotation speed is preferably 450-850 r/min.
8. The method for producing a washable flame retardant filter according to claim 1, wherein in step 3, the cotton feeder speed is 10-25m/min, in particular the cotton feeder speed is preferably 15-25 m/min.
9. The method for producing a washable flame retardant filter according to claim 1, wherein in step 4, the high temperature drying tunnel temperature is 130-250 ℃, particularly preferably 150-230 ℃.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN115538035A (en) * | 2022-10-18 | 2022-12-30 | 成都昊达卫生材料有限公司 | Electrostatic hot air cotton for mask |
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| CN101307528A (en) * | 2008-02-29 | 2008-11-19 | 东莞市莲盈棉制品有限公司 | Fire retardant cotton nonwoven fabrics and manufacture method thereof |
| CN101302659A (en) * | 2008-05-09 | 2008-11-12 | 桐乡市健民过滤材料有限公司 | Bi-component polyester coarse fibre, filter material and preparation thereof |
| CN103120872A (en) * | 2011-11-18 | 2013-05-29 | 东丽纤维研究所（中国）有限公司 | Filter material for filter element, preparation method and application of filter material |
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| CN115538035A (en) * | 2022-10-18 | 2022-12-30 | 成都昊达卫生材料有限公司 | Electrostatic hot air cotton for mask |
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