CN105040155B - It is applied to composite monofilament of health sieve material and preparation method thereof - Google Patents
It is applied to composite monofilament of health sieve material and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of composite monofilament for being applied to health sieve material and preparation method thereof, belong to compound fibrous material field, this is applied to the composite monofilament that health sieves material, using PLA as composite monofilament cortex material, using PA66 as composite monofilament center core layer material, and low melting point LPA66 is added in cortex, so as to improve the compatibility between cortex and center core layer, so that bond stress of the cortex on sandwich layer is more preferable, enhance the tight ness rating of cortex and center core layer, so that cortex is difficult for drop-off in center core layer, simultaneously, the hygienic requirements of drinking water can be reached due to PLA, therefore, the composite monofilament for being applied to health sieve material can apply to health sieve material, and then expand the range of application of the composite monofilament in industries such as food medicine for being applied to health sieve material.
Description
Technical field
Health sieve material is applied to the present invention relates to a kind of compound fibrous material and preparation method thereof, more particularly to one kind
Composite monofilament and preparation method thereof.
Background technology
Composite monofilament is used as a kind of compound fibrous material, and its product has that surface is smooth, color and luster is gorgeous, waterproof, anti-
The advantages of oil, antiultraviolet, fire-retardant, nice and cool, wear-resisting, long service life, thus it is widely used in outdoor lie fallow article, furniture
On each product such as decoration, beach chair, hammock, curtain, automobile cushion foot pad, doormat, decoration articles for use.But due to compound in preparation
Relatively costly during monofilament, product on production line is single and product quality is not high enough and receives certain limitation.
In order to improve the quality of product, person skilled have devised new method.Such as Chinese patent (Publication No.:
CN200810024809.2 " technology of producing PLA microwave radiation shielding fiber by core-skin composite spinning "), the invention spins melt using section
And the feature melt of twin-screw production produces skin-core structural micro-wave screening function by composite box, core-sheath pack spin
The production method of PLA fibers.Produced in composite spinning method by using composite spinning casing.Use conventional equipment, work
Skill is simple, and operation is easy, with low cost, is easy to industrial application;Such as Chinese patent (Publication No.:CN202705116U)
" a kind of clad structure water process composite fibre ", from novel cladding structure, its center core layer be profiled filament, as
Backing material, enables cortex to be more closely coated on sandwich layer.
However, the core filaments of above-mentioned these patent center core layers are all outsourcings, the center core layer that buying is returned, then by polyphosphazene polymer
Polymer melt cladding is cortex, two-step method processing, center core layer outsourcing, so that relatively costly and of the prior art multiple
Close monofilament easily to peel, do not meet the hygienic requirements that health sieves material.
The content of the invention
For above-mentioned problem, the present invention provides a kind of composite monofilament for being applied to health sieve material and its preparation side
Method, to overcome composite monofilament of the prior art, easily decortication causes not meeting the problem that health sieves material requirement, also overcomes existing
The relatively costly problem of composite monofilament in technology, so as to both reduce the production cost of composite monofilament, enhances compound single again
The cortex of silk and the tight ness rating of center core layer so that cortex is difficult for drop-off, and selection meets hygienic requirements, can apply to health sieve
Material, and then expand range of application of the composite monofilament in food pharmaceuticals industry.
To achieve these goals, the technical scheme taken of the present invention is:
It is a kind of to be applied to the composite monofilament that health sieves material, wherein, including:Material is PLA for the center core layer and material of PA66
Cortex, the cortex coats the center core layer.
Above-mentioned is applied to the composite monofilament that health sieves material, wherein, nano-calcium carbonate, and institute are mixed with the center core layer
The addition for stating nano-calcium carbonate is 8%~13%.
Above-mentioned is applied to the composite monofilament that health sieves material, wherein, the LPA66 of low melting point is mixed with the cortex, and
The addition of the LPA66 is 3%~10%.
It is above-mentioned to be applied to the composite monofilament that health sieves material, wherein, the filament diameter of the center core layer for 0.05~
3.1mm。
Above-mentioned is applied to the composite monofilament that health sieves material, wherein, the compound ratio of the center core layer and the cortex is 33
~67:67~33.
A kind of preparation method of the composite monofilament for being applied to health sieve material described above, wherein, including:
(1) be blended with nano-calcium carbonate PA66 section, through dried process, screw rod melting, spinning, drawing and setting, surpass
Center core layer monofilament is made after sound cleaning;
(2) the PLA sections of LPA66 are blended with, cortex is made after being melted through drying, screw rod;
(3) the center core layer monofilament and cortex that will be made in step (1) and step (2) be compound, spinning, then carries out water-bath cold
But, last coiling and molding is made and is applied to the composite monofilament that health sieves material.
The preparation method of the above-mentioned composite monofilament for being applied to health sieve material, wherein, in step (1), the dried process
When, it is pre-crystallized:45~95 DEG C (1~4 hour), heats up:96~115 DEG C (1~5 hour), insulation:115 DEG C (5~11 hours);
When the screw rod is melted, extruder is for amount:250~550g/min, pressure:50~150kg/cm2, preheating zone temperature
Degree:245~290 DEG C, melting zone temperature:260~295 DEG C, metering zone temperature:280~300 DEG C;
During the spinning, die plate temperature:280~300 DEG C, spinning speed:50~200m/min;
During the drawing and setting, draw ratio:3~5.5, setting temperature:120~160 DEG C;
During the ultrasonic cleaning, ultrasonic tank length:10~15 meters, ultrasonic power:0.15~2.5KW.
The preparation method of the above-mentioned composite monofilament for being applied to health sieve material, wherein, in step (3), the center core layer list
Silk and the cortex compound tense, the pump of extruder is for amount:100~200g/min, main frame temperature:170~210 DEG C, head temperature:
180~210 DEG C, screw pressure:150~300kg/cm2.
The preparation method of the above-mentioned composite monofilament for being applied to health sieve material, wherein, used by the combination process in step (3)
Equipment and step (1) in screw rod smelting process used by equipment be same equipment;Used by spinning technique in step (3)
The equipment used by spinning technique in equipment and step (1) is also same equipment.
The preparation method of the above-mentioned composite monofilament for being applied to health sieve material, wherein, the spinning technique in step (3) is used
Parallel spinning technique.
Above-mentioned technical proposal has the following advantages that or beneficial effect:
What the present invention was provided is applied to the composite monofilament that health sieves material, using PLA as the cortex material of composite monofilament, adopts
With PA66 as the center core layer material of composite monofilament, and low melting point LPA66 is added in cortex, so as to improve cortex with
Compatibility between sandwich layer so that bond stress of the cortex on sandwich layer more preferably, enhances the tight ness rating of cortex and center core layer so that
Cortex is difficult for drop-off in center core layer, simultaneously as PLA can reach the hygienic requirements of drinking water, therefore, this is applied to health sieve
The composite monofilament of material can apply to health sieve material, and then expand this be applied to health sieve material composite monofilament food medicine
Etc. the range of application of industry.
What the present invention was provided is applied in the preparation method of the composite monofilament of health sieve material, using technique is cleaned by ultrasonic, makes
Ultrasound removes the nano-calcium carbonate of fiber surface in ultrasonic tank so that hole occurs in center core layer monofilament surface, in increased
Bonding area between core layer filaments and cortex, so that the bond stress between center core layer monofilament and cortex is more preferably, in enhancing
Bonding intensity between core layer filaments and cortex, improves the anti-wear performance of the composite monofilament for being applied to health sieve material and uses the longevity
Life.
In addition, the present invention provide be applied to health sieve material composite monofilament preparation method in, due to center core layer list
It is same equipment that equipment employed in combination process of the silk with cortex melts used equipment with the screw rod of center core layer monofilament,
Equipment employed in spinning technique of the center core layer monofilament with cortex after being combined is used with the spinning technique of center core layer monofilament
Equipment it is also identical, i.e.,:It is applied to the compound of composite monofilament, spinning work and the preparation work of center core layer monofilament of health sieve material
Completed on same production line, so as to reduce intermediate link, and then can reduce the composite monofilament for being applied to health sieve material
Preparation cost.
On the other hand, because the spinning technique after center core layer monofilament and outer layer are compound uses parallel spinning technique, more
Deficiency (factory building complicated, equipment investment big, operating cost high) of the composite spinning of the prior art using vertical spinning has been mended,
On the parallel spinning silk thread of center core layer monofilament, plus a set of melting cladding die head, monofilament is formed the characteristics of continuously produce, coat online,
Equipment investment is reduced, factory building is simple, operating cost is low, varietal adaptation is strong, can produce thick composite monofilament, further drop
The production cost of the low composite monofilament for being applied to health sieve material.
Brief description of the drawings
By reading with reference to the following drawings detailed description made for the present invention, the present invention and its feature, profile and advantage
Will become more apparent.
Fig. 1 is the process chart of the preparation method of the composite monofilament for being applied to health sieve material that the present invention is provided.
Specific embodiment
The present invention is further illustrated with specific embodiment below in conjunction with the accompanying drawings, but not as limit of the invention
It is fixed.
Fig. 1 is the process chart of the preparation method of the composite monofilament for being applied to health sieve material that the present invention is provided;As schemed
Shown, the preparation method of the composite monofilament for being applied to health sieve material of present invention offer includes:
(1) be blended with nano-calcium carbonate PA66 section, through dried process, screw rod melting, spinning, drawing and setting, surpass
Center core layer monofilament is made after sound cleaning;
(2) the PLA sections of LPA66 are blended with, cortex is made after being melted through drying, screw rod;
(3) the center core layer monofilament and cortex that will be made in step (1) and step (2) be compound, spinning, then carries out water-bath cold
But, last coiling and molding is made and is applied to the composite monofilament that health sieves material.
Wherein, in step (1), 8%~13% nano-calcium carbonate is mixed with PA66;It is pre-crystallized in dried process:45
~95 DEG C (1~4 hour), heats up:96~115 DEG C (1~5 hour), insulation:115 DEG C (5~11 hours);
When screw rod is melted, extruder is for amount:250~550g/min, pressure:50~150kg/cm2, preheating zone temperature:
245~290 DEG C, melting zone temperature:260~295 DEG C, metering zone temperature:280~300 DEG C;
In spinning, die plate temperature:280~300 DEG C, spinning speed:50~200m/min;
In drawing and setting, draw ratio:3~5.5, setting temperature:120~160 DEG C;
When being cleaned by ultrasonic, ultrasonic tank length:10~15 meters, ultrasonic power:0.15~2.5KW.
In step (2), 3%~10% LPA66 is mixed with PLA.
In step (3), center core layer monofilament and cortex compound tense, the pump of extruder is for amount:100~200g/min, main frame temperature
Degree:170~210 DEG C, head temperature:180~210 DEG C, screw pressure:150~300kg/cm2.
The equipment used by screw rod smelting process in equipment used by combination process in step (3) and step (1) is same
One equipment;The equipment used by spinning technique in equipment used by spinning technique in step (3) and step (1) also sets for same
It is standby.
Spinning technique in step (3) uses parallel spinning technique.
The compound list that health sieves material is applied to using what the preparation method for being applied to the composite monofilament of health sieve material was made
Silk includes:Material is the cortex of PLA, cortex cladding center core layer for the center core layer and material of PA66;Wherein, it is mixed with center core layer
Nano-calcium carbonate, and the addition of nano-calcium carbonate is 8%~13%;The LPA66 of low melting point, and LPA66 are mixed with cortex
Addition be 3%~10%;The filament diameter of center core layer is 0.05~3.1mm;Center core layer and cortex it is compound than for 33~
67:67~33.
Embodiment 1:
1st, the preparation of PA66 center core layers:
The preparation process of center core layer includes:The PA66 chip dryings of nano-calcium carbonate will be mixed with, then carry out screw rod melting,
Spinning, drawing and setting, ultrasonic cleaning;Wherein, the addition of nano-calcium carbonate is 8%;A diameter of 0.05mm of center core layer monofilament.
Technological parameter in its preparation process is specially:Chip drying:It is pre-crystallized:45~95 DEG C (1 hour);Heat up:96~115 DEG C (1
Hour);Insulation:115 DEG C (5 hours).Screw rod is melted:Extruder is for amount:250g/min;Pressure:50kg/cm2;Preheating zone temperature
Degree:245℃;Melting zone temperature:260℃;Metering zone temperature:280℃.Spinning:Die plate temperature:280℃;Spinning speed:50m/
min.Drawing and setting:Draw ratio:3;Setting temperature:120℃.It is cleaned by ultrasonic:Ultrasonic tank length:10 meters;Power:
0.15KW。
2nd, the preparation of PLA cortexes:
The preparation process of cortex includes:The PLA chip dryings of LPA66 are blended with, screw rod melting is then carried out;Wherein,
The addition of the low melting point LPA66 being mixed with cortex is 3%.
3rd, it is applied to the preparation of the composite monofilament of health sieve material:
Be applied to the preparation process of the composite monofilament of health sieve material be by center core layer monofilament and cortex it is compound after be spun into it is multiple
The step of closing monofilament, it includes:The center core layer monofilament and cortex that both the above step is made are combined, spinning, then enter water-filling
Bath cooling, last coiling and molding.Wherein, the compound ratio of center core layer and cortex is 33:67, the technological parameter of compound tense is specially:
The pump of extruder is for amount:100g/min;Main frame temperature:170℃;Head temperature:180℃;Screw pressure:150kg/cm2.
Embodiment 2:
1st, the preparation of PA66 center core layers:
The preparation process of center core layer includes:The PA66 chip dryings of nano-calcium carbonate will be mixed with, then carry out screw rod melting,
Spinning, drawing and setting, ultrasonic cleaning;Wherein, the addition of nano-calcium carbonate is 13%;A diameter of 3.1mm of center core layer monofilament.
Technological parameter in its preparation process is specially:Chip drying:It is pre-crystallized:45~95 DEG C (4 hours);Heat up:96~115 DEG C (5
Hour);Insulation:115 DEG C (11 hours).Screw rod is melted:Extruder is for amount:550g/min;Pressure:150kg/cm2;Preheating zone temperature
Degree:290℃;Melting zone temperature:295℃;Metering zone temperature:300℃.Spinning:Die plate temperature:300℃;Spinning speed:200m/
min.Drawing and setting:Draw ratio:5.5;Setting temperature:160℃.It is cleaned by ultrasonic:Ultrasonic tank length:15 meters;Power:
2.5KW。
2nd, the preparation of PLA cortexes:
The preparation process of cortex includes:The PLA chip dryings of LPA66 are blended with, screw rod melting is then carried out;Wherein,
The addition of the low melting point LPA66 being mixed with cortex is 10%.
3rd, it is applied to the preparation of the composite monofilament of health sieve material:
Be applied to the preparation process of the composite monofilament of health sieve material be by center core layer monofilament and cortex it is compound after be spun into it is multiple
The step of closing monofilament, it includes:The center core layer monofilament and cortex that both the above step is made are combined, spinning, then enter water-filling
Bath cooling, last coiling and molding.Wherein, the compound ratio of center core layer and cortex is 67:33, the technological parameter of compound tense is specially:
The pump of extruder is for amount:200g/min;Main frame temperature:210℃;Head temperature:210℃;Screw pressure:300kg/cm2.
Embodiment 3:
1st, the preparation of PA66 center core layers:
The preparation process of center core layer includes:The PA66 chip dryings of nano-calcium carbonate will be mixed with, then carry out screw rod melting,
Spinning, drawing and setting, ultrasonic cleaning;Wherein, the addition of nano-calcium carbonate is 10%;A diameter of 1.5mm of center core layer monofilament.
Technological parameter in its preparation process is specially:Chip drying:It is pre-crystallized:45~95 DEG C (2 hours);Heat up:96~115 DEG C (2
Hour);Insulation:115 DEG C (7 hours).Screw rod is melted:Extruder is for amount:350g/min;Pressure:90kg/cm2;Preheating zone temperature
Degree:275℃;Melting zone temperature:275℃;Metering zone temperature:285℃.Spinning:Die plate temperature:285℃;Spinning speed:120m/
min.Drawing and setting:Draw ratio:4;Setting temperature:130℃.It is cleaned by ultrasonic:Ultrasonic tank length:12 meters;Power:1.0KW.
2nd, the preparation of PLA cortexes:
The preparation process of cortex includes:The PLA chip dryings of LPA66 are blended with, screw rod melting is then carried out;Wherein,
The addition of the low melting point LPA66 being mixed with cortex is 5%.
3rd, it is applied to the preparation of the composite monofilament of health sieve material:
Be applied to the preparation process of the composite monofilament of health sieve material be by center core layer monofilament and cortex it is compound after be spun into it is multiple
The step of closing monofilament, it includes:The center core layer monofilament and cortex that both the above step is made are combined, spinning, then enter water-filling
Bath cooling, last coiling and molding.Wherein, the compound ratio of center core layer and cortex is 45:55, the technological parameter of compound tense is specially:
The pump of extruder is for amount:130g/min;Main frame temperature:185℃;Head temperature:190℃;Screw pressure:210kg/cm2.
Embodiment 4:
1st, the preparation of PA66 center core layers:
The preparation process of center core layer includes:The PA66 chip dryings of nano-calcium carbonate will be mixed with, then carry out screw rod melting,
Spinning, drawing and setting, ultrasonic cleaning;Wherein, the addition of nano-calcium carbonate is 12%;A diameter of 2.2mm of center core layer monofilament.
Technological parameter in its preparation process is specially:Chip drying:It is pre-crystallized:45~95 DEG C (3 hours);Heat up:96~115 DEG C (4
Hour);Insulation:115 DEG C (9 hours).Screw rod is melted:Extruder is for amount:450g/min;Pressure:120kg/cm2;Preheating zone temperature
Degree:285℃;Melting zone temperature:290℃;Metering zone temperature:295℃.Spinning:Die plate temperature:295℃;Spinning speed:160m/
min.Drawing and setting:Draw ratio:5;Setting temperature:150℃.It is cleaned by ultrasonic:Ultrasonic tank length:14 meters;Power:1.8KW.
2nd, the preparation of PLA cortexes:
The preparation process of cortex includes:The PLA chip dryings of LPA66 are blended with, screw rod melting is then carried out;Wherein,
The addition of the low melting point LPA66 being mixed with cortex is 8%.
3rd, it is applied to the preparation of the composite monofilament of health sieve material:
Be applied to the preparation process of the composite monofilament of health sieve material be by center core layer monofilament and cortex it is compound after be spun into it is multiple
The step of closing monofilament, it includes:The center core layer monofilament and cortex that both the above step is made are combined, spinning, then enter water-filling
Bath cooling, last coiling and molding.Wherein, the compound ratio of center core layer and cortex is 55:45, the technological parameter of compound tense is specially:
The pump of extruder is for amount:170g/min;Main frame temperature:200℃;Head temperature:200℃;Screw pressure:220kg/cm2.
In sum, it is provided in an embodiment of the present invention to be applied in the preparation method of the composite monofilament of health sieve material, use
It is cleaned by ultrasonic technique, makes ultrasound that the nano-calcium carbonate of fiber surface is removed in ultrasonic tank so that center core layer monofilament surface goes out
Existing hole, increased the bonding area between center core layer monofilament and cortex, so that holding between center core layer monofilament and cortex
Wrap up in power more preferably, the bonding intensity between enhancing center core layer monofilament and cortex improves the composite monofilament for being applied to health sieve material
Anti-wear performance and service life.
In addition, it is provided in an embodiment of the present invention be applied to health sieve material composite monofilament preparation method in, due in
It is same that equipment employed in combination process of the core layer filaments with cortex melts used equipment with the screw rod of center core layer monofilament
One equipment, the spinning technique of equipment and center core layer monofilament employed in spinning technique of the center core layer monofilament with cortex after being combined
The equipment for being used is also identical, i.e.,:It is applied to the system of the compound of composite monofilament, spinning work and center core layer monofilament of health sieve material
Standby being operated on same production line is completed, and the compound of health sieve material is applied to so as to reduce intermediate link, and then can reduce
The preparation cost of monofilament.
On the other hand, because the spinning technique after center core layer monofilament and outer layer are compound uses parallel spinning technique, more
Deficiency (factory building complicated, equipment investment big, operating cost high) of the composite spinning of the prior art using vertical spinning has been mended,
On the parallel spinning silk thread of center core layer monofilament, plus a set of melting cladding die head, monofilament is formed the characteristics of continuously produce, coat online,
Equipment investment is reduced, factory building is simple, operating cost is low, varietal adaptation is strong, can produce thick composite monofilament, further drop
The production cost of the low composite monofilament for being applied to health sieve material.
In addition, being applied to of being made of preparation method of the composite monofilament for being applied to health sieve material provided in an embodiment of the present invention
Health sieves the composite monofilament of material, and it uses PLA as the cortex material of composite monofilament, using PA66 as composite monofilament SMIS
Layer material, and low melting point LPA66 is added in cortex, so as to improve the compatibility between cortex and center core layer so that skin
Bond stress of the layer on sandwich layer more preferably, enhances the tight ness rating of cortex and center core layer so that cortex is difficult for drop-off in center core layer, together
When, the hygienic requirements of drinking water can be reached due to PLA, therefore, the composite monofilament for being applied to health sieve material can apply to
Health sieves material, and then expands the range of application of the composite monofilament in industries such as food medicine for being applied to health sieve material.
It should be appreciated by those skilled in the art that those skilled in the art combine prior art and above-described embodiment can be real
The existing change case, will not be described here.Such change case has no effect on substance of the invention, will not be described here.
Presently preferred embodiments of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, wherein the equipment and structure that do not describe in detail to the greatest extent are construed as giving reality with the common mode in this area
Apply;Any those of ordinary skill in the art, many possible variations and modification are made technical solution of the present invention is not departed from, or
The Equivalent embodiments of equivalent variations are revised as, this has no effect on substance of the invention.Therefore, it is every without departing from skill of the present invention
The content of art scheme, according to technical spirit of the invention is to any simple modification made for any of the above embodiments, equivalent variations and repaiies
Decorations, still fall within the range of technical solution of the present invention protection.
Claims (6)
1. it is a kind of to be applied to the composite monofilament that health sieves material, it is characterised in that including:Material is that the center core layer and material of PA66 are
The cortex of PLA, the cortex coats the center core layer;
Wherein, nano-calcium carbonate is mixed with the center core layer, and the addition of the nano-calcium carbonate is 8%~13%;Institute
The LPA66 that low melting point is mixed with cortex is stated, and the addition of the LPA66 is 3%~10%;The monofilament of the center core layer is straight
Footpath is 0.05~3.1mm;The compound ratio of the center core layer and the cortex is 33~67:67~33.
2. it is a kind of to be applied to the preparation method that health sieves the composite monofilament of material as claimed in claim 1, it is characterised in that bag
Include:
(1) the PA66 sections of nano-calcium carbonate are blended with, it is clear through dried process, screw rod melting, spinning, drawing and setting, ultrasound
Center core layer monofilament is made after washing;
(2) the PLA sections of LPA66 are blended with, cortex is made after being melted through drying, screw rod;
(3) the center core layer monofilament and cortex that will be made in step (1) and step (2) be compound, spinning, then carries out water-bath cooling,
Last coiling and molding is made and is applied to the composite monofilament that health sieves material.
3. it is as claimed in claim 2 to be applied to the preparation method that health sieves the composite monofilament of material, it is characterised in that step (1)
In, during the dried process, pre-crystallized 1~4 hour:45~95 DEG C, heat up 1~5 hour:96~115 DEG C, insulation 5~11 is small
When:115℃;
When the screw rod is melted, extruder is for amount:250~550g/min, pressure:50~150kg/cm2, preheating zone temperature:245
~290 DEG C, melting zone temperature:260~295 DEG C, metering zone temperature:280~300 DEG C;
During the spinning, die plate temperature:280~300 DEG C, spinning speed:50~200m/min;
During the drawing and setting, draw ratio:3~5.5, setting temperature:120~160 DEG C;
During the ultrasonic cleaning, ultrasonic tank length:10~15 meters, ultrasonic power:0.15~2.5KW.
4. it is as claimed in claim 2 to be applied to the preparation method that health sieves the composite monofilament of material, it is characterised in that step (3)
In, the center core layer monofilament and the cortex compound tense, the pump of extruder is for amount:100~200g/min, main frame temperature:170~
210 DEG C, head temperature:180~210 DEG C, screw pressure:150~300kg/cm2。
5. it is as claimed in claim 2 to be applied to the preparation method that health sieves the composite monofilament of material, it is characterised in that step (3)
In combination process used by equipment and step (1) in screw rod smelting process used by equipment be same equipment;In step (3)
Spinning technique used by equipment and step (1) in spinning technique used by equipment be also same equipment.
6. it is as claimed in claim 2 to be applied to the preparation method that health sieves the composite monofilament of material, it is characterised in that step (3)
In spinning technique use parallel spinning technique.
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CN101490335A (en) * | 2006-07-15 | 2009-07-22 | 考勒邦德有限公司 | Tufted nonwoven and bonded nonwoven |
CN102808235A (en) * | 2011-05-31 | 2012-12-05 | 上海杰事杰新材料(集团)股份有限公司 | Corrosion resisting polyamide hollow fiber film and preparation method thereof |
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