CN107938007A - The system and method for PTFE staple fibers is prepared using different molecular weight material - Google Patents
The system and method for PTFE staple fibers is prepared using different molecular weight material Download PDFInfo
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- CN107938007A CN107938007A CN201810004530.1A CN201810004530A CN107938007A CN 107938007 A CN107938007 A CN 107938007A CN 201810004530 A CN201810004530 A CN 201810004530A CN 107938007 A CN107938007 A CN 107938007A
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- oriented film
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- 229920001343 polytetrafluoroethylene Polymers 0.000 title claims abstract description 63
- 239000004810 polytetrafluoroethylene Substances 0.000 title claims abstract description 63
- 239000000835 fiber Substances 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000000463 material Substances 0.000 title claims abstract description 21
- 238000005245 sintering Methods 0.000 claims abstract description 27
- 238000001125 extrusion Methods 0.000 claims abstract description 20
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000001467 acupuncture Methods 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims description 15
- 229920005989 resin Polymers 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 15
- 238000010438 heat treatment Methods 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 5
- 238000003490 calendering Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 239000002002 slurry Substances 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 43
- 239000000047 product Substances 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 206010016654 Fibrosis Diseases 0.000 description 2
- 230000004761 fibrosis Effects 0.000 description 2
- 239000006210 lotion Substances 0.000 description 2
- 238000002074 melt spinning Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 1
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D13/00—Complete machines for producing artificial threads
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/04—Melting filament-forming substances
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/06—Feeding liquid to the spinning head
- D01D1/065—Addition and mixing of substances to the spinning solution or to the melt; Homogenising
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D11/00—Other features of manufacture
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/42—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments
- D01D5/426—Formation of filaments, threads, or the like by cutting films into narrow ribbons or filaments or by fibrillation of films or filaments by cutting films
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D7/00—Collecting the newly-spun products
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G1/00—Severing continuous filaments or long fibres, e.g. stapling
- D01G1/02—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form
- D01G1/04—Severing continuous filaments or long fibres, e.g. stapling to form staple fibres not delivered in strand form by cutting
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2321/00—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
- D10B2321/04—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons
- D10B2321/042—Fibres made from polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds polymers of halogenated hydrocarbons polymers of fluorinated hydrocarbons, e.g. polytetrafluoroethene [PTFE]
Abstract
The invention discloses a kind of system and method that PTFE staple fibers are prepared using different molecular weight material, including sintering extrusion device, further includes mixed stirring device and acupuncture comb cuts device；The mixed stirring device is connected with sintering the feeding end of extrusion device, including：Cavity volume, the first feed pipe, the second feed pipe, motor, blender and discharge nozzle, first feed pipe and the second feed pipe are connected with cavity volume respectively, and blender is arranged in cavity volume, and motor is arranged on the top of cavity volume, and be connected with the blender in cavity volume, discharge nozzle is connected with cavity volume；The acupuncture comb, which cuts device, to be included：The road after the discharge end of sintering extrusion device, to unreel the oriented film unwinding device of oriented film, and is set in turn in puncture needle rod, cutting device, buncher, traversing gear and wrap-up behind oriented film unwinding device.The present invention can improve the production efficiency of PTFE staple fibers, the PTFE staple fibers for reducing cost, producing mass higher.
Description
Technical field
The present invention relates to the preparation of PTFE staple fibers, is prepared more specifically to one kind using different molecular weight material
The system and method for PTFE staple fibers.
Background technology
Polytetrafluoroethylene (PTFE) (PTFE) is unrivaled excellent with the other plastics of high temperature resistant, acid-alkali-corrosive-resisting, hydrolysis etc.
Point, is made into staple fiber and can be made into high temperature resistance filtration material, the corrosion-resistant filtrate of chemical and medicine industry industry, PTFE non-woven fabrics etc., more
To be widely used more.
The method of currently manufactured PTFE staple fibers has two kinds, the first is melt spinning method, due under PTFE molten conditions
Mobility it is very poor, so cannot use common melt spinning method manufacture staple fiber.But use special method, i.e., it is logical
Viscose glue is crossed as carrier, viscose glue melting lotion is mixed with the lotion that PTFE disperses and is integrated, then extruding spinning, then pass through height
Temperature thermally decomposes adhesive component, retains PTFE components and becomes PTFE staple fibers, since viscose glue is always had by high temperature thermal decomposition
Small ashes are remained in PTFE staple fibers, and are in coke yellow, so, method can only produce auburn short fibre in this
Dimension.This manufacture method invests big, of high cost, complex process, and the staple strength produced is low, brown, and staple fiber should
With being restricted.
The method of second of manufacture PTFE staple fiber is that film splits method, and exactly first PTFE dispersion resins are made with certain strong
Length (longitudinal direction) direction of degree is in the oriented film of fibrosis, is then divided thin-film width (transverse direction) direction by the method for machinery
Split, the linear fibrosis in longitudinal direction, this method can produce the fiber of white or other a variety of colors.Second of manufacturer
Method investment is small, cost is low, and the PTFE staple fibers intensity produced is high, can produce multiple color as needed, so application is wide
It is general.
Film, which splits legal system, to be made in PTFE staple fibers it is crucial that the method that film is split, this method can have many kinds, at present
It is common be employed have two kinds, the first is that embossed is carried out on oriented film, i.e., along length (longitudinal direction) direction line of film
Property and on width (transverse direction) direction of film with similar to the concave-convex of zigzag shape carry out embossed, width
Strand break and then split, obtain fiber filament, then staple fiber is obtained by cut-out.Second method is to orient
Film cuts into linearly and directly some crins in length direction in horizontal direction, is then carrying out bunchy heating, then lead to
Crossing the processes such as repeatedly extruding, stretching, heating, stretching draws and attenuates the crin in beam, and becomes fiber, and staple fiber is formed through cut-out.
Film dividing into boundling twisting again after bar, is then stretched, extruded again by second method by extrusion stretching, heating
Stretching, reheat stretching, and technique is so repeated several times, the crin after segmentation is pulled into fine fibre, the fibre fineness of this method
Mainly as obtained from multiple stretching, still, since the used raw material of such method are typically all using same
The PTFE dispersion resins of one batch, same molecular weight, then through in case of technological operation is improper, easily causing fibre during multi-drawing process
The fracture of dimension, improves disqualification rate.
The content of the invention
In view of the above defects of the prior art, the object of the present invention is to provide one kind to use different molecular weight material
Prepare the system and method for PTFE staple fibers, it is possible to increase the production efficiency of PTFE staple fibers, reduce cost, production mass more
High PTFE staple fibers.
To achieve the above object, the present invention adopts the following technical scheme that：
On the one hand, a kind of system that PTFE staple fibers are prepared using different molecular weight material, including sintering extrusion device, also
Device is cut including mixed stirring device and acupuncture comb；
The mixed stirring device is connected with sintering the feeding end of extrusion device, including：Cavity volume, the first feed pipe, second
Feed pipe, motor, blender and discharge nozzle, the first feed pipe and the second feed pipe are connected with cavity volume respectively, and blender is arranged on
In cavity volume, motor is arranged on the top of cavity volume, and is connected with the blender in cavity volume, and discharge nozzle is connected with cavity volume, and arranged on appearance
The bottom of chamber, discharge nozzle are connected with sintering the feeding end of extrusion device；
The acupuncture comb, which cuts device, to be included：The road after the discharge end of sintering extrusion device, to unreel determining for oriented film
To film unwinding device, and it is set in turn in puncture needle rod, cutting device, buncher, traversing dress behind oriented film unwinding device
Put and wrap-up.
The blender includes rotation axis, and the stirring slurry being sheathed in rotation axis, rotation axis are connected with motor.
The puncture needle rod has a pair, is respectively arranged on oriented film over and under.
A diameter of 0.5~0.6mm of puncture needle on the puncture needle rod, needle point area≤0.001mm2, puncture
The array pitch of draw point is 3~5mm, and density is 35~40/cm2。
The cutting device includes：Erecting bed, the knife rest on erecting bed, the axis on knife rest, and lay
In the blade on axis.
On the other hand, a kind of method that PTFE staple fibers are prepared using different molecular weight material, is comprised the following steps：
S1. the PTFE dispersion resins of two kinds of different molecular weights are ultrasonically treated 30~50 minutes at 25~35 DEG C；
S2. by the PTFE dispersion resins of two kinds of different molecular weights after step S1 processing respectively by the first feed pipe and
Second feed pipe enters in cavity volume；
S3. start motor driving blender, the PTFE dispersion resins of two kinds of different molecular weights are stirred in cavity volume
Mixing；
S4. mixed PTFE is disperseed tree by discharge nozzle, feeding end to enter in sintering extrusion device, by being molded,
Push, calendering film forming, then through sintering, heating, stretching oriented film is made；
S5. between the oriented film obtained by step S4 being introduced a pair of of puncture needle rod by oriented film unwinding device, to fixed
Punctured to film, make to form the pin hole arranged in length and breadth on oriented film；
S6. the oriented film after being punctured is transmitted to cutting device and is cut again, makes oriented film continuous in the longitudinal direction
The long filament of linear single fiber state；
S7. the long filament obtained by step S6 is transmitted to buncher and carries out boundling；
S8. PTFE staple fibers are obtained after the long filament after boundling being passed sequentially through cut-out, shredding or pass sequentially through curling, are determined
The PTFE staple fibers of curling are obtained after type, cut-out, shredding.
In the step S5, the needle point linear velocity of puncture needle rod is consistent with the linear velocity that oriented film is run.
In the step S6, the operation linear velocity of cutting device is more than 2~4 times of oriented film operation linear velocity.
In the step S4, the thickness of oriented film is 20~40um.
In the step S4, sintering temperature is 330~475 DEG C, and sintering time is 20~35 minutes.
It is provided by the present invention a kind of using different molecular weight material preparation PTFE staple fibers in above-mentioned technical solution
System and method also there is some following beneficial effect：
1. the present invention admirably can be mixed the PTFE dispersion resins of two kinds of different molecular weights, easy to operate；
It is less energy consumption, efficient 2. present invention process advantages of simple, reliable；
It is low that 3. the present invention makes low price, small investment, maintenance cost；
4. the present invention utilizes the characteristic mixed between different molecular weight, the rigidity, toughness and tensile strength of product are improved；
5. this invention ensures that the being of close texture property of product.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Fig. 2 is the structure diagram of mixed stirring device of the present invention；
Fig. 3 is the structure diagram of cutting device of the present invention；
Fig. 4 is the flow chart of the present invention.
Embodiment
Technical scheme is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 1 to Fig. 3, one kind provided by the present invention prepares PTFE staple fibers using different molecular weight material
System, including sintering extrusion device 1, further include mixed stirring device 2 and acupuncture comb cut device.
Preferably, the mixed stirring device 2 is connected with sintering the feeding end of extrusion device 1, including：Cavity volume 3, first into
Expects pipe 4, the second feed pipe 5, motor 6, blender 7 and discharge nozzle 8, the first feed pipe 4 and the second feed pipe 5 respectively with cavity volume 3
It is connected, the PTFE dispersion resins of two kinds of different molecular weights can be made to enter in cavity volume 3, blender 7 is installed in cavity volume 3, to
The PTFE dispersion resins of two kinds of different molecular weights are stirred mixing, motor 6 is installed on the top of cavity volume 3, and with cavity volume 3
Blender 7 be connected, to drive the rotation of blender 7, discharge nozzle 8 is connected with cavity volume 3, and is installed on the bottom of cavity volume 3,
Discharge nozzle 8 is connected with sintering the feeding end of extrusion device 1, and the feedstock transportation after being stirred in cavity volume 3 is filled to extrusion is sintered
Put 1 carry out next process.
Preferably, the acupuncture comb cuts device and includes：Be arranged at sintering extrusion device 1 discharge end after road, to unreel
The oriented film unwinding device 10 of oriented film 9, and be set in turn in behind oriented film unwinding device 10 being carried out to oriented film 9
A pair of of puncture needle rod 11 of puncture, by the oriented film 9 after puncture cut into the cutting device 12 of long filament, the boundling by long filament boundling
Device 13, traversing gear 14 and the wrap-up 15 wound to endless tow, oriented film unwinding device 10, puncture needle rod 11, divide
A pair of of rubber rollers 16 are also provided between cutting apparatus 12 and buncher 13, to convey oriented film 9.
Preferably, the blender 7 includes rotation axis, and the stirring slurry being sheathed in rotation axis, rotation axis and motor
It is connected, easy to disassemble and maintaining.
Preferably, a diameter of 0.5~0.6mm of the puncture needle on the puncture needle rod 11, needle point area≤
0.001mm2, the array pitch of puncture needle is 3~5mm, and density is 35~40/cm2, the depth of insertion oriented film 9 for 0.3~
1mm。
Preferably, the cutting device 12 includes：Erecting bed, the knife rest 121 being arranged on erecting bed, is arranged at knife rest
Axis 122 on 121, and be uniformly arranged in the blade 123 on axis 122, spacer 124 is additionally provided between adjacent two blade 123, every
Set 124 is socketed on axis 122, can prevent the play on axis 122 of blade 123.
Incorporated by reference to shown in Fig. 4, a kind of side that PTFE staple fibers are prepared using different molecular weight material provided by the present invention
Method, comprises the following steps：
S1. the PTFE dispersion resins of two kinds of different molecular weights are ultrasonically treated 30~50 minutes at 25~35 DEG C；
S2. by the PTFE dispersion resins of two kinds of different molecular weights after step S1 processing respectively by the first feed pipe and
Second feed pipe enters in cavity volume；
S3. start motor driving blender, the PTFE dispersion resins of two kinds of different molecular weights are stirred in cavity volume
Mixing；
S4. mixed PTFE is disperseed tree by discharge nozzle, feeding end to enter in sintering extrusion device, by being molded,
Push, calendering film forming, then through sintering, heating, stretch oriented film is made, sintering temperature is 330~475 DEG C, sintering time 20
~35 minutes, the thickness of caused oriented film was 20~40um；
S5. between the oriented film obtained by step S4 being introduced a pair of of puncture needle rod by oriented film unwinding device, to fixed
Punctured to film, make to form the pin hole arranged in length and breadth on oriented film, and the needle point linear velocity of puncture needle rod is run with oriented film
Linear velocity it is consistent；
S6. the oriented film after being punctured is transmitted to cutting device and is cut again, makes oriented film continuous in the longitudinal direction
The long filament of linear single fiber state, the operation linear velocity of cutting device are more than 2~4 times of oriented film operation linear velocity；
S7. the long filament obtained by step S6 is transmitted to buncher and carries out boundling；
S8. PTFE staple fibers are obtained after the long filament after boundling being passed sequentially through cut-out, shredding or pass sequentially through curling, are determined
The PTFE staple fibers of curling are obtained after type, cut-out, shredding.
In conclusion the PTFE staple fibers that the present invention is produced are not only with short production cycle, product quality is stablized, and due to profit
The chemical effect caused by the PTFE dispersion resins mixing of two kinds of different molecular weights, it is possible to increase product latitudinal strength, toughness.
Those of ordinary skill in the art it should be appreciated that the embodiment of the above be intended merely to explanation the present invention,
And be not used as limitation of the invention, as long as in the spirit of the present invention, the change to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (10)
1. a kind of system that PTFE staple fibers are prepared using different molecular weight material, including sintering extrusion device, it is characterised in that：
Further include mixed stirring device and acupuncture comb cuts device；
The mixed stirring device is connected with sintering the feeding end of extrusion device, including：Cavity volume, the first feed pipe, the second charging
Pipe, motor, blender and discharge nozzle, the first feed pipe and the second feed pipe are connected with cavity volume respectively, and blender is arranged on cavity volume
Interior, motor is arranged on the top of cavity volume, and is connected with the blender in cavity volume, and discharge nozzle is connected with cavity volume, and arranged on cavity volume
Bottom, discharge nozzle are connected with sintering the feeding end of extrusion device；
The acupuncture comb, which cuts device, to be included：The road after the discharge end of sintering extrusion device, to unreel the oriented film of oriented film
Unwinding device, and be set in turn in puncture needle rod behind oriented film unwinding device, cutting device, buncher, traversing gear and
Wrap-up.
A kind of 2. system that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 1, it is characterised in that：
The blender includes rotation axis, and the stirring slurry being sheathed in rotation axis, rotation axis are connected with motor.
A kind of 3. system that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 1, it is characterised in that：
The puncture needle rod has a pair, is respectively arranged on oriented film over and under.
A kind of 4. system that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 3, it is characterised in that：
A diameter of 0.5~0.6mm of puncture needle on the puncture needle rod, needle point area≤0.001mm2, the row of puncture needle
Away from being 35~40/cm for 3~5mm, density2。
A kind of 5. system that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 1, it is characterised in that：
The cutting device includes：Erecting bed, the knife rest on erecting bed, the axis on knife rest, and be laid on axis
Blade.
A kind of 6. method that PTFE staple fibers are prepared using different molecular weight material, it is characterised in that：Comprise the following steps：
S1. the PTFE dispersion resins of two kinds of different molecular weights are ultrasonically treated 30~50 minutes at 25~35 DEG C；
S2. the PTFE dispersion resins of two kinds of different molecular weights after step S1 processing are passed through into the first feed pipe and second respectively
Feed pipe enters in cavity volume；
S3. start motor driving blender, the PTFE dispersion resins of two kinds of different molecular weights are stirred mixing in cavity volume；
S4. mixed PTFE is disperseed tree by discharge nozzle, feeding end to enter in sintering extrusion device, by being molded, pushing,
Calendering film forming, then through sintering, heating, stretching oriented film is made；
S5. between the oriented film obtained by step S4 being introduced a pair of of puncture needle rod by oriented film unwinding device, to oriented film
Punctured, make to form the pin hole arranged in length and breadth on oriented film；
S6. the oriented film after being punctured is transmitted to cutting device and is cut again, and it is in continuously line in the longitudinal direction to make oriented film
The long filament of property single fiber state；
S7. the long filament obtained by step S6 is transmitted to buncher and carries out boundling；
S8. the long filament after boundling is passed sequentially through PTFE staple fibers are obtained after cut-out, shredding or pass sequentially through curling, sizing,
The PTFE staple fibers of curling are obtained after cut-out, shredding.
A kind of 7. method that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 6, it is characterised in that：
In the step S5, the needle point linear velocity of puncture needle rod is consistent with the linear velocity that oriented film is run.
A kind of 8. method that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 6, it is characterised in that：
In the step S6, the operation linear velocity of cutting device is more than 2~4 times of oriented film operation linear velocity.
A kind of 9. method that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 6, it is characterised in that：
In the step S4, the thickness of oriented film is 20~40um.
10. a kind of method that PTFE staple fibers are prepared using different molecular weight material as claimed in claim 6, its feature are existed
In：In the step S4, sintering temperature is 330~475 DEG C, and sintering time is 20~35 minutes.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810004530.1A CN107938007A (en) | 2018-01-03 | 2018-01-03 | The system and method for PTFE staple fibers is prepared using different molecular weight material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810004530.1A CN107938007A (en) | 2018-01-03 | 2018-01-03 | The system and method for PTFE staple fibers is prepared using different molecular weight material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111890587A (en) * | 2020-08-11 | 2020-11-06 | 常州万容新材料科技有限公司 | Method for manufacturing PTFE short fiber |
| CN111893591A (en) * | 2020-08-11 | 2020-11-06 | 常州万容新材料科技有限公司 | Preparation method of PTFE (polytetrafluoroethylene) long fibers |
| CN112726029A (en) * | 2020-12-22 | 2021-04-30 | 杭州诺邦无纺股份有限公司 | Filament non-woven composite material and preparation method thereof |
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| CN112726029A (en) * | 2020-12-22 | 2021-04-30 | 杭州诺邦无纺股份有限公司 | Filament non-woven composite material and preparation method thereof |
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