A kind of preparation method of needle punched non-woven fabrics
Technical field
The present invention relates to the preparation method of a kind of needle punched non-woven fabrics, belong to non-woven fabrics manufacture field.
Background technology
Needle punched non-woven fabrics is the one of dry method non-woven fabrics, the principle of needle point method nonwovens process be utilize triangle section (
Or other cross sections) pricker of seamed edge band barb carries out bob-weight puncture to fibre web, when barb is through fibre web, by web surface drawn game
Portion's strong short thrust of nexine fiber enters inside fibre web.Due to the rubbing action between fiber, the most fluffy fibre web is compressed.Pricker moves back
When going out fibre web, the fibre bundle barb that thrusts and stay in fibre web.So, many fibre bundles tangle fibre web so that it is can not
Recover original fluffy state again.Through acupuncture many times, considerable fibre bundle is pierced fibre web, makes fiber in fibre web mutual
Tangle mutually, thus formed and there is certain strength and the needle point method non-woven material of thickness.
The manufacturing process technological process of existing needle punched non-woven fabrics is complicated, and equipment needed thereby is complicated, made acupuncture nonwoven
Cloth strength, bulkiness, water-permeable and air permeable poor-performing.
Therefore, it is necessary to composition of raw materials and technique manufacturing process to existing needle punched non-woven fabrics improve so that system
Making process flow process to shorten, equipment is simple, the strength of needle punched non-woven fabrics for preparing, bulkiness, water-permeable and air permeable better performances.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides the preparation method of needle punched non-woven fabrics, it is possible to former
Some technical recipes and preparation method improve so that technological process is shortened, and device structure is simple, and it is equal that product has grammes per square metre
The features such as even, fracture strength is high, tearing strength is big, Heat stability is good, the most also have good bulkiness, water-permeable and air permeable.
In order to achieve the above object, the present invention proposes following technical scheme:
The preparation method of described needle punched non-woven fabrics specifically includes following steps:
A. the preparation of the short fibre of modified dacron
Polyester slice, fire retardant, dispersed lubricant and adjuvant are blended in double screw extruder extrusion in proportion filter, logical
Cross manifold, dosing pump and spinneret and carry out spray webbing, then cool down boundling, carry out once and once add hot gas spring, finally above
Carry out shaping, rolling, cut-out packing;
B. the preparation of needle punched non-woven fabrics
1) prepare before becoming net
1. fiber is selected
According to the requirement of properties of product, select in 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A made
The short fine POY of modified dacron, carries out shredding mixing of weighing in proportion;
2. bale opener opener
A. thick shredding operation
Chartered plane is reopened, institute in required 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A by three table scales
The short fine POY of modified dacron of system, puts in proportion on the flat curtain of conveying, is sent to thick opener, make the fibre of block curling compacting
Dimension obtains preliminary shredding, and thick opener is made up of 10 pieces of steel nail-plates, and rotating speed is 1250 revs/min, prepares changing of preliminary shredding
Property terylene short fiber;
B. mixed cotton operation
The short fibre of modified dacron through preliminary shredding, send the effect with cyclone separator by wind so that it is be evenly distributed on
The big storehouse of mixed cotton deposits, it is ensured that cotton layer height is consistent, by the common effect of the oblique curtain of flat curtain and brad so that it is be transported to essence and open
Machine;The size in the big storehouse of this mixed cotton is: 4100 × 2300 × 4200mm;
C. essence shredding operation
Raw material, after mixed cotton is sufficiently mixed, feeds refined opener, carries out abundant shredding and pre-comb in refined opener,
Make the further shredding of fiber, stretch, feed next procedure by blower fan;Refined opener is made up of 10 pieces of steel nail-plates, and rotating speed is
1440 revs/min;
D. air pressure cotton box gives cotton
Fiber through essence start enters into the upper hopper of air pressure cotton box by air delivery pipe, by feed roll motor and doffer
Effect make fiber fall in lower hopper with " flakes ", then in the way of counterpressure, fiber constant volume is given, it is ensured that cotton
Layer body density is consistent;
3. combing
Carding machine receives the fiber that air pressure cotton box feeds according to technique initialization weight, after entering into cotton-supplying roller, by double stannum
The effect of woods two pass husband, is carded to uniform 5 20 grams/m of netted thin layers of double layer fibre;
2) lapping
1. cross lapping
5 20 grams/m of fleeces, through the gripping conveying of clamping carbon curtain, make fleece not made by external force
Under with, passing through reciprocating so that it is lapping reaches 7 18 layers, web thickness is that 10 40cm are for next procedure;
2. feeding machine
Feed before needing machine, make fleece uniform clamping feeding pin district before acupuncture;
3) needing machine is reinforced
1. pre-needling is reinforced
Fleece is tentatively tangled sizing by the fleece formed through combing, lapping by pre-needling operation, it is ensured that former
The direction of fleece is constant, and pre-needling machine is needing machine on single needle plate, and Needle Board density is 4500 pieces/meter;
The most main pinprick reinforcement
Being tangled by the further acupuncture of main needing machine by the fleece tentatively tangled through pre-needling machine, main needing machine is double
Needle plate dystopy Double felting needle felting machine, Needle Board density is 13000 pieces/meter;
3. have a shave pinprick reinforcement
By the needle punched non-woven fabrics tangled through main pinprick reinforcement by needing machine tow sides acupuncture of having a shave, reach molding pin
Prick nonwoven cloth surfacing, impulse-free robustness, bone trace phenomenon, Needle Board density is 14000 pieces/meter;
4. cloth is stored up
Carry out storing up cloth with storage cloth tension bracket;
5. rolling
Rolling rolling is carried out with automatic cut-to-length trimming up-coiler;
4) later stage processes
The mode using thermal contraction fixation reduces the percent thermal shrinkage of the needle punched non-woven fabrics of molding, improves performance.
Further, in step A, the mass percent of polyester slice, fire retardant, dispersed lubricant and adjuvant is respectively
: polyester slice 82-90%, fire retardant 4-12%, dispersed lubricant 2-5%, adjuvant 2-5%.
Further, in step B, 1. select 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm in fiber
The mass percent of the short fine POY of the modified dacron made with in A is respectively as follows: 2D terylene short fiber * 51mm consumption and is
40-50%, 2.5D terylene short fiber * 51mm consumption 50-60%, the short fine POY0-10% of modified dacron.
The invention has the beneficial effects as follows:
The present invention has that technological process is short, adaptability to raw material is strong, device structure is simple, product
There is the features such as grammes per square metre is uniform, fracture strength is high, tearing strength is big, Heat stability is good, the pin prepared by the present invention
The fracture strength of prick nonwoven cloth is 250-380N/5cm, and elongation at break is 50-98%, and fabric limited oxygen index is 30-
34, the most also there is the performances such as good bulkiness, water-permeable and air permeable, and the sensation of also cotton, compare with cotton goods, nothing
The sack spinning cloth is easily formed, and low cost, so being widely used in every field, main uses is:
Geotextiles, waterproof material, filtering material, synthetic leather base cloth, footwear material, textile for automobile.
Accompanying drawing explanation
Fig. 1 is the fabrication processing of the present invention.
Detailed description of the invention
Below in conjunction with embodiments of the invention, the technical scheme in the embodiment of the present invention is clearly and completely retouched
State, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments, based on the present invention
In embodiment, those of ordinary skill in the art obtained under not making creative work premise all other implement
Example, broadly falls into the scope of protection of the invention.
Embodiment 1
The preparation method of described needle punched non-woven fabrics specifically includes following steps:
A. the preparation of the short fibre of modified dacron
Polyester slice, fire retardant, dispersed lubricant and adjuvant are blended in double spiral shell with the ratio of 89%, 4%, 3%, 4%
Bar extruder extrusion filters, and carries out spray webbing by manifold, dosing pump and spinneret, then cools down boundling, carries out once and one
Secondary above add hot gas spring, finally carry out shaping, rolling, cut-out packing;
B. the preparation of needle punched non-woven fabrics
1) prepare before becoming net
1. fiber is selected
According to the requirement of properties of product, select in 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A
The short fine POY of made modified dacron, the ratio in 40%, 50%, 10% carries out shredding mixing of weighing;
2. bale opener opener
A. thick shredding operation
Chartered plane is reopened, in required 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A by three table scales
The short fine POY of made modified dacron, is put on the flat curtain of conveying in the ratio of 40%, 50%, 10%, is sent to thick opener,
The fiber making block curling compacting obtains preliminary shredding, and thick opener is made up of 10 pieces of steel nail-plates, and rotating speed is 1250 revs/min
Clock, prepares the short fibre of modified dacron of preliminary shredding;
B. mixed cotton operation
Through the modified dacron chopped fiber of preliminary shredding, send the effect with cyclone separator by wind so that it is be uniformly distributed
Deposit at each position, the big storehouse of mixed cotton, it is ensured that cotton layer height is consistent, by the common effect of the oblique curtain of flat curtain and brad so that it is
It is transported to essence start;The size in the big storehouse of this mixed cotton is: 4100 × 2300 × 4200mm;
C. essence shredding operation
Raw material, after mixed cotton is sufficiently mixed, feeds refined opener, carries out abundant shredding and pre-comb in refined opener,
Make the further shredding of fiber, stretch, feed next procedure by blower fan;Refined opener is made up of 10 pieces of steel nail-plates, and rotating speed is
1440 revs/min;
D, air pressure cotton box give cotton
Fiber through essence start send pipeline to enter into the upper hopper of air pressure cotton box, by feed roll motor and doffer by phoenix
Effect make fiber fall in lower hopper with " flakes ", then in the way of counterpressure, fiber constant volume is given, it is ensured that cotton
Layer body density is consistent;
3. combing
Carding machine receives the fiber that air pressure cotton box feeds according to technique initialization weight, after entering into cotton-supplying roller, by double stannum
The effect of woods two pass husband, is carded to uniform 5 grams/m of netted thin layers of double layer fibre;
2) lapping
1. cross lapping
5 grams/m of fleeces through the gripping conveying of clamping carbon curtains, make fleece under not effect by external force,
Passing through reciprocating so that it is lapping reaches 7 layers, web thickness is that 10cm is for next procedure;
2. feeding machine
Feed before needing machine, make fleece uniform clamping feeding pin district before acupuncture;
3) needing machine is reinforced
1. pre-needling is reinforced
Fleece is tentatively tangled sizing by the fleece formed through combing, lapping by pre-needling operation, it is ensured that former
The direction of fleece is constant, and pre-needling machine is needing machine on single needle plate, and Needle Board density is 4500 pieces/meter;
The most main pinprick reinforcement
The fleece tentatively tangled through pre-needling machine is tangled by the further acupuncture of main needing machine;Main needing machine is
Crosspointer plate dystopy Double felting needle felting machine, Needle Board density is 13000 pieces/meter;
3. have a shave pinprick reinforcement
By the needle punched non-woven fabrics tangled through main pinprick reinforcement by needing machine tow sides acupuncture of having a shave, reach molding pin
Prick nonwoven cloth surfacing, impulse-free robustness, bone trace phenomenon, Needle Board density is 14000 pieces/meter;
4. cloth is stored up
Carry out storing up cloth with storage cloth tension bracket;
5. rolling
Rolling rolling is carried out with automatic cut-to-length trimming up-coiler;
4) later stage processes
The mode using thermal contraction fixation reduces the percent thermal shrinkage of the needle punched non-woven fabrics of molding, improves performance.
Embodiment 2
A. the preparation of the short fibre of modified dacron
Polyester slice, fire retardant, dispersed lubricant and adjuvant are blended in double spiral shell with the ratio of 85%, 8%, 3%, 4%
Bar extruder extrusion filters, and wherein, fire retardant addition is the 8% of blend gross mass, by manifold, dosing pump and spray webbing
Plate carries out spray webbing, then cools down boundling, carries out once and once above adds hot gas spring, finally carries out shaping, rolling, cut-out are beaten
Bag;
B. the preparation of needle punched non-woven fabrics
1) prepare before becoming net
1. fiber is selected
According to the requirement of properties of product, select in 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A
The short fine POY of made modified dacron, the ratio in 40%, 50%, 10% carries out shredding mixing of weighing;
2. bale opener opener
A. thick shredding operation
Reopened chartered planes by three table scales, required 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and
The short fine POY of modified dacron made in A, is put on the flat curtain of conveying in the ratio of 40%, 50%, 10%, is sent to slightly open
Pine machine, makes the fiber of block curling compacting obtain preliminary shredding, and thick opener is made up of 10 pieces of steel nail-plates, and rotating speed is
1250 revs/min, prepare the short fibre of modified dacron of preliminary shredding;
B. mixed cotton operation
Through the modified dacron chopped fiber of preliminary shredding, send the effect with cyclone separator by wind so that it is be uniformly distributed
Deposit at each position, the big storehouse of mixed cotton, it is ensured that cotton layer height is consistent, by the common effect of the oblique curtain of flat curtain and brad so that it is
It is transported to essence start;The size in the big storehouse of this mixed cotton is: 4100 × 2300 × 4200mm;
C. essence shredding operation
Raw material, after mixed cotton is sufficiently mixed, feeds refined opener, carries out abundant shredding and pre-comb in refined opener,
Make the further shredding of fiber, stretch, feed next procedure by blower fan;Refined opener is made up of 10 pieces of steel nail-plates, rotating speed
It it is 1440 revs/min;
D, air pressure cotton box give cotton
Fiber through essence start send pipeline to enter into the upper hopper of air pressure cotton box, by feed roll motor and doffer by phoenix
Effect make fiber fall in lower hopper with " flakes ", then in the way of counterpressure, fiber constant volume is given, it is ensured that cotton
Layer body density is consistent;
3. combing
Carding machine receives the fiber that air pressure cotton box feeds according to technique initialization weight, after entering into cotton-supplying roller, by double stannum
The effect of woods two pass husband, is carded to uniform 15 grams/m of netted thin layers of double layer fibre;
2) lapping
1. cross lapping
15 grams/m of fleeces through the gripping conveying of clamping carbon curtains, make fleece under not effect by external force,
Passing through reciprocating so that it is lapping reaches 13 layers, web thickness is that 25cm is for next procedure;
2. feeding machine
Feed before needing machine, make fleece uniform clamping feeding pin district before acupuncture;
3) needing machine is reinforced
1. pre-needling is reinforced
Fleece is tentatively tangled sizing by the fleece formed through combing, lapping by pre-needling operation, it is ensured that former
The direction of fleece is constant, and pre-needling machine is needing machine on single needle plate, and Needle Board density is 4500 pieces/meter;
The most main pinprick reinforcement
The fleece tentatively tangled through pre-needling machine is tangled by the further acupuncture of main needing machine;Main needing machine is
Crosspointer plate dystopy Double felting needle felting machine, Needle Board density is 13000 pieces/meter;
3. have a shave pinprick reinforcement
By the needle punched non-woven fabrics tangled through main pinprick reinforcement by needing machine tow sides acupuncture of having a shave, reach molding pin
Prick nonwoven cloth surfacing, impulse-free robustness, bone trace phenomenon, Needle Board density is 14000 pieces/meter;
4. cloth is stored up
Carry out storing up cloth with storage cloth tension bracket;
5. rolling
Rolling rolling is carried out with automatic cut-to-length trimming up-coiler;
4) later stage processes
The mode using thermal contraction fixation reduces the percent thermal shrinkage of the needle punched non-woven fabrics of molding, improves performance.
Embodiment 3
The preparation method of described needle punched non-woven fabrics specifically includes following steps:
A. the preparation of the short fibre of modified dacron
Polyester slice, fire retardant, dispersed lubricant and adjuvant are blended in double spiral shell with the ratio of 81%, 12%, 3%, 4%
Bar extruder extrusion filters, and carries out spray webbing by manifold, dosing pump and spinneret, then cools down boundling, carries out once and one
Secondary above add hot gas spring, finally carry out shaping, rolling, cut-out packing;
B. the preparation of needle punched non-woven fabrics
1) prepare before becoming net
1. fiber is selected
According to the requirement of properties of product, select in 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and A
The short fine POY of made modified dacron, the ratio in 40%, 50%, 10% carries out shredding mixing of weighing;
2. bale opener opener
A. thick shredding operation
Reopened chartered planes by three table scales, required 2D terylene short fiber * 51mm, 2.5D terylene short fiber * 51mm and
The short fine POY of modified dacron made in A, is put on the flat curtain of conveying in the ratio of 40%, 50%, 10%, is sent to slightly open
Pine machine, makes the fiber of block curling compacting obtain preliminary shredding, and thick opener is made up of 10 pieces of steel nail-plates, and rotating speed is
1250 revs/min, prepare the short fibre of modified dacron of preliminary shredding;
B. mixed cotton operation
Through the modified dacron chopped fiber of preliminary shredding, send the effect with cyclone separator by wind so that it is be uniformly distributed
Deposit at each position, the big storehouse of mixed cotton, it is ensured that cotton layer height is consistent, by the common effect of the oblique curtain of flat curtain and brad so that it is
It is transported to essence start;The size in the big storehouse of this mixed cotton is: 4100 × 2300 × 4200mm;
C. essence shredding operation
Raw material, after mixed cotton is sufficiently mixed, feeds refined opener, carries out abundant shredding and pre-comb in refined opener,
Make the further shredding of fiber, stretch, feed next procedure by blower fan;Refined opener is made up of 10 pieces of steel nail-plates, rotating speed
It it is 1440 revs/min;
D, air pressure cotton box give cotton
Fiber through essence start send pipeline to enter into the upper hopper of air pressure cotton box, by feed roll motor and doffer by phoenix
Effect make fiber fall in lower hopper with " flakes ", then in the way of counterpressure, fiber constant volume is given, it is ensured that cotton
Layer body density is consistent;
3. combing
Carding machine receives the fiber that air pressure cotton box feeds according to technique initialization weight, after entering into cotton-supplying roller, by double stannum
The effect of woods two pass husband, is carded to uniform 20 grams/m of netted thin layers of double layer fibre;
2) lapping
1. cross lapping
20 grams/m of fleeces through the gripping conveying of clamping carbon curtains, make fleece under not effect by external force,
Passing through reciprocating so that it is lapping reaches 18 layers, web thickness is that 40cm is for next procedure;
2. feeding machine
Feed before needing machine, make fleece uniform clamping feeding pin district before acupuncture;
3) needing machine is reinforced
1. pre-needling is reinforced
Fleece is tentatively tangled sizing by the fleece formed through combing, lapping by pre-needling operation, it is ensured that former
The direction of fleece is constant, and pre-needling machine is needing machine on single needle plate, and Needle Board density is 4500 pieces/meter;
The most main pinprick reinforcement
The fleece tentatively tangled through pre-needling machine is tangled by the further acupuncture of main needing machine;Main needing machine is
Crosspointer plate dystopy Double felting needle felting machine, Needle Board density is 13000 pieces/meter;
3. have a shave pinprick reinforcement
By the needle punched non-woven fabrics tangled through main pinprick reinforcement by needing machine tow sides acupuncture of having a shave, reach molding pin
Prick nonwoven cloth surfacing, impulse-free robustness, bone trace phenomenon, Needle Board density is 14000 pieces/meter;
4. cloth is stored up
Carry out storing up cloth with storage cloth tension bracket;
5. rolling
Rolling rolling is carried out with automatic cut-to-length trimming up-coiler;
4) later stage processes
The mode using thermal contraction fixation reduces the percent thermal shrinkage of the needle punched non-woven fabrics of molding, improves performance.
The present invention has that technological process is short, adaptability to raw material is strong, device structure is simple, product have grammes per square metre uniformly, fracture
The features such as intensity is high, big, the Heat stability is good of tearing strength, the fracture strength of the needle punched non-woven fabrics prepared by the present invention is 250-
380N/5cm, elongation at break is 50-98%, and fabric limited oxygen index is 30-34, the most also has good bulkiness, thoroughly
The performances such as water breathability, and the sensation of also cotton, compare with cotton goods, and the sack of non-woven fabrics is easily formed, and cost
Cheaply, so being widely used in every field, main uses is: geotextiles, waterproof material, filtering material, conjunction
Become leather base cloth, footwear material, textile for automobile.
The preparation method of a kind of needle punched non-woven fabrics provided the embodiment of the present invention above is described in detail, herein
In apply specific case principle and the embodiment of the present invention be set forth, the explanation of above example is only intended to side
Assistant solves method and the core concept thereof of the present invention;Simultaneously for one of ordinary skill in the art, according to the think of of the present invention
Thinking, the most all will change, in sum, it is right that this specification content should not be construed as
The restriction of the present invention.