CN101818413A - Manufacturing method and device for two-component hollow spun-bonded spunlace non-woven fabrics - Google Patents
Manufacturing method and device for two-component hollow spun-bonded spunlace non-woven fabrics Download PDFInfo
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Abstract
The invention belongs to the technical field of spun-bonded nonwovens manufacturing. The manufacturing method comprises the following steps: a. respectively drying, extruding, melting and filtering the two slices made of different materials according to a ratio; b. precisely measuring the two melts with a metric pump to enter into a main box for conjugate composition, spinning the composite melts at the condition of air cooling to obtain hollow as-spun fibers; c. air-drafting and spinning the as-spun fibers; d. spreading and lapping the obtained spinning; e. carrying out spunlace solidifying and splitting on the fiber nets obtained by spreading and lapping; and f. drying and shaping to form clothes. The device comprises a slice device, a conjugate composition device, a spinning device, an air drafting device, a swaying yarn and web forming device, a spunlace device and a sari forming device which are arranged in turn, and also comprises a central control desk which can manipulate the devices. The invention has the advantages of less labor room buildings, short processing flow, high production efficiency and the like. And the produced non-woven fabrics have better hand feeling, better softness and thinner single fiber fineness, have improved filtering property and developed application of the non-woven fabrics in health care.
Description
Technical field
The invention belongs to spun-bonded non-woven manufacturing technology field, specifically is the manufacture method and the equipment of bi-component hollow spun-bonded spunlace non-weaving cloth.
Background technology
Superfine composite fiber since advantages such as its high spreadability, soft comfortable, excellent adsorption, cloth cover exquisiteness be widely used, superfine composite fiber is applied to nonwoven manufacturing technology field the multiple technologies route is arranged, can be divided into core-skin type, parallel type, fabric of island-in-sea type and tangerine lobe type from its fiber section, the commercially available prod is mainly based on fabric of island-in-sea type and tangerine lobe type.
Fabric of island-in-sea type can be divided into figured type and figured type two classes not, two kinds of component slices are made sea-island staple fiber through conjugation melt spinning, cooling, drawing-off, make non-woven base fabric through carding, acupuncture again, carry out PU coating, toluene extraction, drying then and make not the figured type needle punched non-woven fabrics or dissolve with alkali lye at a certain temperature and make the figured type needle punched non-woven fabrics.The fabric of island-in-sea type nonwoven fabric can be used for producing super fine artificial leather, but above two kinds of technologies all exist, and production procedure is long, spinning speed is lower, complicated, low, the more high shortcoming of energy consumption of raw material availability of equipment configuration, and all need in the production process to add other chemicals, do not meet the product requirement of low pollution, low energy consumption.
Tangerine lobe type superfine fibre is divided into tangerine lobe type micro staple fiber and the ultra-fine long fiber of tangerine lobe type, Japan's clock spins company and Japanese Supreme Being people group develops tangerine lobe type staple fibre, behind carding, carry out post processing again, make it to divide the not weaving fabric of superfine fiber that obtains about 0.1D.
But the intensity of tangerine lobe type superfine fibre short fiber carding non-weaving cloth is lower, relatively poor to brute force in length and breadth, ductility is lower, and cloth cover is bright and clean inadequately smooth.
Spun-bond process unites two into one chemical-fibres filaments production and two operations of nonwoven production, has that technological process is short, cost is low, an excellent product performance, advantage such as of many uses.
Hollow tangerine lobe type superfine fibre long filament is to carry out the water thorn to handle after hollow is Comoposite spunbonded, obtain hollow superfine fibre spunbonded water-jet bonding non-woven fabrics, its fibre structure is finer and close, have better hygroscopicity and gas permeability, its intensity is considerably beyond the staple fibre non-weaving cloth, and cloth cover is more clean and tidy, smooth, feel is more soft, fine and smooth, comfortable, can be widely used in artificial leather base cloth, high-grade cleaning wiping cloth, filter substrate, various fields such as blanket base cloth, ornament materials and clothes, bedding and clothing.
But the production technology and the equipment that also lack comparatively ripe hollow tangerine lobe type superfine fibre spunbonded water-jet bonding non-woven fabrics at present.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of bi-component hollow spun-bonded spunlace non-woven fabrics manufacture method and equipment, the compound tubular filament of bicomponent conjugate, spunbond technology and water thorn technology are organically combined, and the spun-bonded non-woven that makes is more even, coverage rate is higher thereby make.
Concrete technical scheme of the present invention is:
Two component hollow spun-bonded spunlace non-woven fabrics manufacture methods is characterized in that may further comprise the steps:
A, in proportion two kinds of slices made of different materials are carried out drying, extruding, fusion, filtration respectively;
B, two kinds of melts of a step gained are gone into main box to carry out conjugation compound through the measuring pump accurate measurement is laggard, the melt spinning under air-cooled condition after compound obtains the hollow spun filament;
C, spun filament is carried out the air drawing spinning;
D, with the lapping of c step gained spinning carrying out branch silk;
E, will divide a lapping gained fiber web carry out water thorn fixed, open fibre;
F, drying are shaped as cloth;
The conjugation combined temp is 265 ℃～295 ℃ among the step b, and being used for air-cooled lateral blowing wind-warm syndrome is 10 ℃～20 ℃, and wind speed is 0.3m/s～0.8m/s, and ambient humidity range is 30%-95%,
Air drawing blast described in the step c is 0.4Mpa～0.8Mpa, and wind speed is 4000m/s～5000m/s,
The frequency of dividing the pendulum wire device pendulum of silk process in the steps d is 300 times/min～1400 time/min, and the speed of lapping lace curtaining is 2m/min～100m/min;
The liquid drugs injection pressure of water thorn is 1Mpa～30Mpa among the step e.
Described section is PET and PA-6, and PET is 20%～80% by weight percentage, and PA-6 is 80%～20%.
Described PET section melt temperature is 255 ℃～260 ℃, and PA-6 section melt temperature is 213 ℃～233 ℃.
Be used to carry out the equipment of described nonwoven manufacture method, it is characterized in that described equipment comprises that the slicing device, conjugation set composite, device for spinning, air draft equipment, the pendulum wire that set gradually become net arrangement, water thorn device, typing cloth rewinder, and the central control board of controlling said apparatus
Slicing device mainly is made up of drier, screw extruder,
The conjugation set composite mainly is made up of some main boxes and some auxiliary box bodies of being located at before the main box, and auxiliary box body links to each other with main box by pipeline,
Device for spinning comprises filament spinning component and crosswind formula air cooler,
Air draft equipment comprises some drafting tubes and the drawing-off head and the nozzle that mate with drafting tube, and the spacing of adjacent drafting tube is 40.5mm,
Pendulum wire becomes net arrangement mainly by forming with the pendulum wire device and the lapper of air-flow draw-gear coupling,
The water thorn device mainly is made up of water thorn combination machine and circulating water treatment device,
The typing cloth rewinder mainly is made up of rotary screen dryer and counting doff machine.
Described filament spinning component mainly is made up of top board, filtration bearing plate, distribution plate and spinnerets.
Described water thorn device comprises that one is installed on rotary screen dryer aspirator before.
The present invention further is described below:
Section of the present invention can be selected from PET, PA-6, PP, COPET, PTT, PBT, PE two kinds.
With PET section and PA-6 section is example, and drier is separately sent in PET and PA-6 section, delivers to the screw extruder fusion after the drying, gained melt filtration, metering, PA-6 is introduced into auxiliary box body, is imported in the main box by the auxiliary box body melt pipe again, and PET then directly enters main box; Melt is after filament spinning component is compound, and from the spinneret orifice ejection, the melt thread of ejection is cooled to spun filament rapidly through crosswind formula air cooler; Spun filament becomes filament fiber after the tubular type air draft equipment stretches, fiber is being layered on the lapper after with fabric thrashing under the high speed swinging of pendulum wire device uniformly; The lapper lace curtaining is delivered to water thorn combination machine with fiber web, enters the drying machine drying after the water thorn is fixed, again doff machine coiling.
For solving the problem that two kinds of inaccurate nonwovens that bring of section compositely proportional can't reach designing requirement in advance, the present invention is by being provided with auxiliary box body before main box, the section melt is introduced into auxiliary box body before entering main box, auxiliary box body is connected with main box by pipeline, both can guarantee that melt entered the time unanimity of measuring pump, can also give pipe insulation.
The present invention can set up the starching step according to product demand after water thorn step, can set up hot-rolled step behind baking step.
The main box that the present invention adopts is an aggregation type multimode composite spinning casing, and each main box has all disposed 12 spinning stations, can be according to the platform number of producing needs configuration main box.
The present invention also solves the abundant mixed spinning process of melt by device for spinning is set.
Device for spinning comprises filament spinning component and crosswind formula air cooler.
The effect of filament spinning component is to make melt pass through screen pack, metal sand and spinnerets to form the spinning initial pressure, and melt is extruded into strand.Melt quantitatively enters the assembly top board through spinning station with certain pressure after measuring pump metering, after the filter screen of filter plate and metal sand filter once more, evenly flow to distribution plate; Distribution plate also is deflector, it mixes the back with the melt thread and imports each spinneret orifice, form uniform thread, mixed melt is evenly imported each spinneret orifice, under certain spinning pressure, extrude, swell, form uniform melt thread, thread forms spun filament after the lateral blowing that crosswind formula air cooler blows out cools off rapidly; Distribution plate has four, and two-component polymer mixes on the 3rd distribution plate.
Filament spinning component of the present invention can be bi-component hollow tangerine lobe filament spinning component, and melt carries out compound in assembly, only needs to change distribution plate and just can reach 16 lobes or 32 lobe cross sections; Described crosswind formula air cooler mainly is made up of a high damping layer, multiple filtration net, cellular board, porous plate, blast pipe and blower fan, and the blower fan of many crosswind formula air coolers can be a big air-conditioning unit.
The tubular type air draft equipment mainly is made up of drawing-off head, drafting tube and nozzle, and the effect of air drawing directly influences the uniformity of nonwoven.The length of common commercially available drafting tube is 2.6m, the spacing of adjacent drafting tube is generally 81mm, and facts have proved that the nonwoven uniformity of producing is undesirable under this spacing, after the present invention is contracted to 40.5mm with the former spacing of adjacent drafting tube, not only improve the uniformity of nonwoven, reduced clouding, also very favourable to the drawing-off and the branch silk of long filament, also reduced simultaneously owing to spinnerets is spent the easy product lousiness phenomenon that produces greatly to the drawing-off brilliance, reduced the rubbing action of silk in drafting tube; The present invention has also reduced the nozzle opening diameter and has divided the silk effect to improve, and silk is fully disperseed, and reduces clouding; The drawing point of long filament of the present invention generally is located in the position from spinnerets 10cm～20cm.
Spun-bonded fibre of the present invention fixed employing water acupuncture manipulation and do not use the hot rolling method, the hot rolling method is that fiber web rolls into cloth with hot roll, and it is fixed to belong to the planar formula, thereby the product feel hardens, and drapability is relatively poor; And water thorn fixed be a kind of stereoscopic three-dimensional form, and through after the water under high pressure repeated localised puncture repeatedly, product is soft, draping property is good, and is powerful high, good quality.
During the water thorn was fixed, the fiber of fibre web was fixed by the point that tangles, and the point that tangles is many more, and the entanglement effect is good more.In consolidated fibers, liquid drugs injection leaves fibre to fiber, and the tangerine lobe of bi-component is split, and the number that splits is many more, and it is big more to open fine rate.Opening fibre is divided into again splitting and leaves fine and two kinds of fibres are opened in displacement.Split and leave the delicate fingers fiber and opened, but also together inter-adhesive, look that a ratio do not open fine slightly, still can see that a lot of individual filament are arranged on the rhizoid by liquid drugs injection; After the delicate fingers fiber detaching was opened in displacement, the filament back individualism that is shifted mutually can see it being that one one filament exists; Displacement is opened fine more finer and smoother than splitting the cloth cover that leaves fibre under the situation of opening fine rate equally.
Water in spun-bonded spunlace technology thorn equipment is compared with routine, and its water thorn pressure is bigger, and is higher to requirements in water quality during production because spun-bonded spunlace except will to fibre web carry out fixed, also to open fibre, so the configuration of water thorn pressure is most important to fiber.
Each the circle drum of water thorn combination machine that adopts in the water thorn step of the present invention is provided with two water jets, select single, double row's needle plate and water thorn road number according to the different performance that different product requires, liquid drugs injection pressure according to product required open fine rate, under fibre web reaches fixed prerequisite, be controlled at 1Mpa～30Mpa and do not wait; The difference that the present invention puts in order in the production line direction by water jet and adopt different pressure.For absorbing water thorn energy fully, through entering into the first road water thorn after prewetting, the first road water thorn pressure is lower earlier for fiber web, and along with the brute force of nonwoven is more and more higher, later water thorn pressure improves step by step.The water thorn combination machine that is adopted among the present invention can be and obtained different cloth cover effects, changes the circle drum circle of different size and decorative pattern.
The also configurable negative suction system of water thorn device of the present invention, along with the variation of the grammes per square metre of nonwoven and water thorn speed, suction air volume also can change thereupon.Grammes per square metre is big more, and speed is high more, and suction air volume is also big more, otherwise opposite, and the frequency of the negative pressure air intake device in the water thorn combination machine generally is controlled at 30 ± 20HZ.
Circulating water treatment device in the water thorn device can be made up of parts such as air-float filtration, the filtration of sand formula, bag type filterings, thereby reaches qualified water quality.
Typing cloth rewinder of the present invention adopts by the rotary screen dryer that contains contact drying and heated-air drying, and the dryness finalization temperature is controlled in 90 ℃～200 ℃ scopes according to product purpose, and the temperature of cylinder drying cylinder generally is controlled at 100 ℃～200 ℃.
All above-mentioned devices of the present invention are controlled by central control board, specifically can controlling by realization equipment such as electric cabinet gauge tap, frequency converters.
Technical solution of the present invention has characteristics such as build less in the delivery room, technological process weak point, production efficiency height, compare with common spunbonded non-woven production, the dual-component spunbonded water-jet bonding nonwoven of gained of the present invention has better feel and flexibility, the cloth cover that has improved common spunbond cloth is endured with all one's will, the shortcoming of feel difference, has thinner single fiber fineness, improve the shortcoming of common spunbond cloth strainability difference, and expanded the application of nonwoven aspect health care.
The short fiber carding arts demand that common spun laced fabric adopts is painted in postchannel process, has deficiency such as easily fall hair, fade; And gained dual-component spunbonded water-jet bonding nonwoven of the present invention adopts continuous yarn spinning to become net, in the filature fleece formation process, can add various Masterbatchs, make versicolor long filament, reinforce through the water thorn again and make non-weaving cloth, its colouring evenly and firmly, the nonwoven of superfine fibre filament structure is compared with the nonwoven of short fiber structure and is had higher brute force, pliability simultaneously, and feel is more fine and smooth.
Description of drawings
Fig. 1 is the schematic diagram of bi-component hollow spunbonded non-woven manufacturing equipment of the present invention
Fig. 2 is the air draft equipment partial structurtes schematic diagram of prior art
Fig. 3 is an air draft equipment partial structurtes schematic diagram of the present invention
Wherein: drier 1, drier 2, screw extruder 3, screw extruder 4, filter 5, filter 6, auxiliary box body 7, auxiliary box body 8, main box 9, main box 10, air cooler 11, air cooler 12, air draft equipment 13, air draft equipment 14, pendulum wire device 15, pendulum wire device 16, lapper 17, prewetting machine 18, spun-laced machine rotary drum cylinder 19, water jet 20, aspirator 21, drying machine 22, doff machine 23, drafting tube 24, drafting tube 25, drafting tube 26, drafting tube 27, drawing-off 241, nozzle 242, nozzle 262.
The specific embodiment
The invention will be further elaborated below in conjunction with accompanying drawing.
As Fig. 1, Fig. 2 and shown in Figure 3, drier 1 and drier 2 separately sent in PET and PA-6 section, deliver to screw extruder 1 and screw extruder 2 fusions after the drying, the gained melt filters metering through filter 5 and filter 6, PA-6 is introduced into auxiliary box body 8, is imported in main box 10 and the main box 9 by auxiliary box body 8 melt pipes again, and PET then directly enters main box 10 and main box 9, perhaps be introduced into auxiliary box body 7, enter main box 10 and main box 9 again according to production requirement; Melt is after filament spinning component is compound, spray from spinneret orifice, the melt thread of ejection is cooled to spun filament rapidly through crosswind formula air cooler 11 and air cooler 12, the conjugation combined temp is 265 ℃～295 ℃, being used for air-cooled lateral blowing wind-warm syndrome is 10 ℃～20 ℃, wind speed is 0.3m/s～0.8m/s, and ambient humidity range is 30%-95%; Spun filament becomes filament fiber after tubular type air draft equipment 13 and 14 stretchings of tubular type air draft equipment, the air drawing blast is 0.4Mpa～0.8Mpa, and wind speed is 4000m/s～5000m/s; Fiber is being layered on the lapper 17 after with fabric thrashing under the high speed swinging of pendulum wire device 15 and pendulum wire device 16 uniformly, and the frequency of pendulum wire device pendulum is 300 times/min～1400 time/min, and the speed of lapping lace curtaining is 2m/min～100m/min; Lapper 17 lace curtainings are delivered to water thorn combination machine with fiber web, enter drying machine 22 dryings after the water thorn is fixed, and liquid drugs injection pressure is 1Mpa～30Mpa, again by doff machine 23 coilings.
Wherein the technical program also can be stung at water and be set up the starching staining procedure after fixed, and sets up hot-rolled step after the drying machine drying, to adapt to different product requirements.
Described PET and PA-6 section, PET is 20%～80% by weight percentage, and PA-6 is 80%～20%, and concrete PET section melt temperature is 255 ℃～260 ℃, and PA-6 section melt temperature is 213 ℃～233 ℃.
Described filament spinning component can be bi-component hollow tangerine lobe filament spinning component, and melt carries out compound in assembly, only needs to change distribution plate and just can reach 16 lobes or 32 lobe cross sections; Described crosswind formula air cooler 11 and air cooler 12 mainly are made up of a high damping layer, multiple filtration net, cellular board, porous plate, blast pipe and blower fan, and the blower fan of many crosswind formula air coolers can be a big air-conditioning unit.
The tubular type air draft equipment mainly is made up of drawing-off 241, drafting tube 24 and nozzle 242, and the effect of air drawing directly influences the uniformity of nonwoven.
The length of common commercially available drafting tube is 2.6m, and adjacent drafting tube is that the spacing of drafting tube 24 shown in Figure 2 and drafting tube 25 is generally 81mm, and facts have proved that the nonwoven uniformity of producing under this spacing is undesirable.
The technical program is contracted to 40.5mm with the former spacing of adjacent drafting tube, as shown in Figure 3, the spacing of drafting tube 25 and drafting tube 26 is 40.5mm, the technical program has also reduced the nozzle opening diameter, the diameter that is nozzle 262 is less than nozzle 242, and the drawing point of the long filament of the technical program generally is located in the position from spinnerets 10cm～20cm.
Each cylinder 19 of water thorn combination machine that the technical program water thorn adopts is provided with two water jets 20, select single, double row's needle plate and water thorn road number according to the different performance that different product requires, liquid drugs injection pressure according to product required open fine rate, under fibre web reaches fixed prerequisite, be controlled at 1Mpa～30Mpa and do not wait; For absorbing water thorn energy fully, through entering into the first road water thorn after prewetting, the first road water thorn pressure is lower earlier for fiber web, and along with the brute force of nonwoven is more and more higher, later water thorn pressure improves step by step.Water thorn combination machine can be and obtained different cloth cover effects, changes the circle drum circle of different size and decorative pattern.
The also configurable negative suction system 21 of the technical program water thorn device, along with the variation of the grammes per square metre of nonwoven and water thorn speed, suction air volume also can change thereupon.Grammes per square metre is big more, and speed is high more, and suction air volume is also big more, otherwise opposite, and the frequency of the negative pressure air intake device in the water thorn combination machine generally is controlled at 30 ± 20HZ.
Claims (6)
1. two component hollow spun-bonded spunlace non-woven fabrics manufacture methods is characterized in that may further comprise the steps:
A, in proportion two kinds of slices made of different materials are carried out drying, extruding, fusion, filtration respectively;
B, two kinds of melts of a step gained are gone into main box to carry out conjugation compound through the measuring pump accurate measurement is laggard, the melt spinning under air-cooled condition after compound obtains the hollow spun filament;
C, spun filament is carried out the air drawing spinning;
D, with the lapping of c step gained spinning carrying out branch silk;
E, will divide a lapping gained fiber web carry out water thorn fixed, open fibre;
F, drying are shaped as cloth;
The conjugation combined temp is 265 ℃～295 ℃ among the step b, and being used for air-cooled lateral blowing wind-warm syndrome is 10 ℃～20 ℃, and wind speed is 0.3m/s～0.8m/s, and ambient humidity range is 30%-95%,
Air drawing blast described in the step c is 0.4Mpa～0.8Mpa, and wind speed is 4000m/s～5000m/s,
The frequency of dividing the pendulum wire device pendulum of silk process in the steps d is 300 times/min～1400 time/min, and the speed of lapping lace curtaining is 2m/min～100m/min;
The liquid drugs injection pressure of water thorn is 1Mpa～30Mpa among the step e.
2. according to claim 1 pair of component hollow spun-bonded spunlace non-woven fabrics manufacture method is characterized in that described section is PET and PA-6, and PET is 20%～80% by weight percentage, and PA-6 is 80%～20%.
3. according to claim 2 pair of component hollow spun-bonded spunlace non-weaving cloth manufacture method is characterized in that described PET section melt temperature is 255 ℃～260 ℃, and PA-6 section melt temperature is 213 ℃～233 ℃.
4. be used for the equipment that enforcement of rights requires 1 to 3 each described nonwoven manufacture method, it is characterized in that described equipment comprises that the slicing device, conjugation set composite, device for spinning, air draft equipment, the pendulum wire that set gradually become net arrangement, water thorn device, typing cloth rewinder, and the central control board of controlling said apparatus
Slicing device mainly is made up of drier, screw extruder,
The conjugation set composite mainly is made up of some main boxes and some auxiliary box bodies of being located at before the main box, and auxiliary box body links to each other with main box by pipeline,
Device for spinning comprises filament spinning component and crosswind formula air cooler,
Air draft equipment comprises some drafting tubes and the drawing-off head and the nozzle that mate with drafting tube, and the spacing of adjacent drafting tube is 40.5mm,
Pendulum wire becomes net arrangement mainly by forming with the pendulum wire device and the lapper of air-flow draw-gear coupling,
The water thorn device mainly is made up of water thorn combination machine and circulating water treatment device,
The typing cloth rewinder mainly is made up of rotary screen dryer and counting doff machine.
5. the equipment of nonwoven manufacture method according to claim 4 is characterized in that described filament spinning component mainly is made up of top board, filter plate, distribution plate and spinnerets.
6. the equipment of nonwoven manufacture method according to claim 4 is characterized in that described water thorn device comprises that one is installed on rotary screen dryer aspirator before.
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| CN 201010127028 CN101818413A (en) | 2010-03-18 | 2010-03-18 | Manufacturing method and device for two-component hollow spun-bonded spunlace non-woven fabrics |
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Cited By (32)
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| CN102704020A (en) * | 2011-09-20 | 2012-10-03 | 顾海云 | Method and composite spinning component for preparing ferris wheel sea island composite filaments |
| CN102704021A (en) * | 2011-09-20 | 2012-10-03 | 顾海云 | Method and composite spinning component for preparing ferris wheel sea island composite short fibers |
| CN102433688A (en) * | 2011-10-21 | 2012-05-02 | 成都彩虹环保科技有限公司 | Non-woven fabric forming device |
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