CN101624755A - Production technique of pure cotton non-woven fabrics and device - Google Patents
Production technique of pure cotton non-woven fabrics and device Download PDFInfo
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- CN101624755A CN101624755A CN200910109154A CN200910109154A CN101624755A CN 101624755 A CN101624755 A CN 101624755A CN 200910109154 A CN200910109154 A CN 200910109154A CN 200910109154 A CN200910109154 A CN 200910109154A CN 101624755 A CN101624755 A CN 101624755A
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Abstract
The invention discloses a production technique of pure cotton non-woven fabrics and a device. The technique comprises the following steps: cross lapping: spreading a fibre screen evenly and alternately in a reciprocating way; extending: regulating the arrangement of fibre at different extension speeds; clipping screen and prewetting: performing pre-wetting processing to the fibre screen; performing once flat-screen water thrust: snarling the fibre screen for parallel movement with water jet; performing drum water thrust: snarling the fibre screen for circular movement with water jet; and performing twice flat screen water thrust: snarling the fibre screen for parallel movement with water jet again. By adopting the production technique, the device and the water thrust process of using the manner combining the flat screen and the drum, the invention can maximize favorable factors and minimize unfavorable ones to develop respective advantages, improves the physical performances of producing ratio, product tension, evenness, flexibility and surface mass, saves materials, reduces pollution to circulating water, reduces the maintenance amount of device, prolongs the service period of the device and achieves the aim of reducing cost and saving energy.
Description
[technical field]
The present invention relates to a kind of production technology and equipment of nonwoven fabric.
[background technology]
The raw material of nonwoven fabric mainly is synthetic fiber and cotton, and its raw material resources of non-woven fabrics of synthetic fiber have non-renewable, and the production cost height is destroyed the cost height, and not environmental protection, so its application is not extensive.And its raw material of pure cotton non-woven fabrics is a natural cotton, the raw material abundance, handle convenient, human body do not had draws quick reaction, has natural characteristics such as biodegradation, and pure cotton non-woven fabrics have high-hygroscopicity and gas permeability, intensity height, phozy, do not fall that hair, drapability are good, good hand touch, do not contain characteristics such as chemical binder and other impurity, thereby be used widely, as: products such as sanltary towel, panty liner, baby diapers, cotton pads, beauty mask.The pure cotton non-woven fabrics production technology remains in deficiencies such as complex process, product energy consumption height and row yielding are low yet at present.
[summary of the invention]
Main purpose of the present invention is: a kind of production technique of pure cotton non-woven fabrics and equipment that improves row yielding is provided.
For this reason, the present invention proposes a kind of production technology of pure cotton non-woven fabrics, its flow sequence comprises:
Cross lapping: reciprocal interlocking of fibre web evenly spread out;
Drawing-off: utilize different draft speeds to adjust the arrangement of fiber;
The folder net is prewetted: fibre web is carried out pre-humidifying handle;
Plain net water thorn: utilize water jet that the fibre web of parallel motion is tangled;
Circle drum water thorn: utilize water jet that the fibre web of circular motion is tangled;
Secondary plain net water thorn: utilize water jet that the fibre web of parallel motion is tangled once more.
Above-mentioned production technique of pure cotton non-woven fabrics, described plain net water thorn is opposite to the water thorn direction of fibre web with described secondary plain net water thorn.
Above-mentioned production technique of pure cotton non-woven fabrics, described circle drum water thorn comprise once circle drum water thorn, secondary circle drum water thorn and three circle drum water thorns; Water thorn direction to fibre web between the adjacent circle drum water thorn step is opposite.
Above-mentioned production technique of pure cotton non-woven fabrics, described drawing-off adopt many groups to grip card clothing roller and drawing-off card clothing roller, form the multistage drafting of a plurality of draw zones.
Above-mentioned production technique of pure cotton non-woven fabrics, described plain net water thorn, once in circle drum water thorn, secondary circle drum water thorn, three circle drum water thorns and the secondary plain net water thorn, the water thorn direction to fibre web between the thorn that borders on the river the mutually step is opposite.
Simultaneously, the present invention proposes a kind of pure cotton non-woven fabrics production equipment, comprise that order is connected with lower device:
Cross lapping device: be used for reciprocal interlocking of fibre web evenly spread out;
Drafting system: utilize different draft speeds to adjust the arrangement of fiber;
The folder net device of prewetting: fibre web is carried out pre-humidifying handle;
Plain net water thorn device: utilize water jet that the fibre web of parallel motion is tangled;
Circle drum water thorn device: utilize water jet that the fibre web of circular motion is tangled;
Secondary plain net water thorn device: utilize water jet that the fibre web of parallel motion is tangled once more.
Above-mentioned pure cotton non-woven fabrics production equipment, described circle drum water thorn device comprise once circle drum water thorn device, secondary circle drum water thorn device and three circle drum water thorn devices; Adjacent circle drum water thorn device is opposite to the water thorn direction of fibre web.
Above-mentioned pure cotton non-woven fabrics production equipment, described drafting system comprise that many groups grip card clothing roller and drawing-off card clothing roller, form the multistage drafting of a plurality of draw zones.
Adopt production technology of the present invention and equipment, the mode that water thorn operation employing plain net and circle drum combine can be maximized favourable factors and minimized unfavourable ones, performance advantage separately, the physical properties such as tension force, uniformity, flexibility and surface quality of raising row yielding and finished product; Both saved raw material, alleviated pollution, reduced the maintenance capacity of equipment again, increased the life cycle of equipment, reached the purpose that reduces cost, saves the energy recirculated water.
Production technology of the present invention overcomes in the prior art water thorn operation and does not exceed three times technology prejudice, adopts the water thorn operation more than three times, and fibre web is carried out positive and negative two-way water repeatedly thorn, makes the fiber reinforcing of fully tangling, and has improved every performance of finished product.
The plain net water jet process is simple in structure, be convenient to maintenance, low cost of manufacture.In the circle drum water jet process, water jet is along circle drum circumferential arrangement, and fibre web is adsorbed on the rotary drum, accepts the injection of the water jet of water jet ejection; Rotate synchronously with same angular speed between processed fibre web, transmission net and the rotary drum, in whole water thorn process, do not have relative displacement, eliminated the fiber quilt phenomenon of " shearing " in the flat screen type water thorn device; Fibre web is adsorbed on the rotary drum, does not have deviation phenomenon, helps high-speed production, and fibre web is non-plane motion in water thorn district simultaneously, accepts water thorn face and loosens, and the reverse side compression helps water jet like this and penetrates, effectively entangled fiber; Rotary drum is the metallic cylinder perforation structure, in establish dewater unit, compare with the holder lace curtaining that plain net water thorn is reinforced, current are had good rebound effect; Simultaneously, because the minimizing of surface area, the suction effect of water thorn waste water is better, and because of the disconnected fiber of " being cut ", " pulling " also fewer, thereby both saved raw material, alleviated pollution, reduced the maintenance capacity of equipment again recirculated water, increase the life cycle of equipment, reached the purpose that reduces cost, saves the energy.
[description of drawings]
Fig. 1 is the production process flow chart of one embodiment of the present of invention.
Fig. 2 is that the folder net of one embodiment of the present of invention is prewetted and water thorn part.
[specific embodiment]
Also the present invention is described in further detail in conjunction with the accompanying drawings below by specific embodiment.
As shown in Figure 1, this routine producing technology of non-woven fabrics may further comprise the steps in proper order: get the raw materials ready, shredding removes micronic dust, combing, and cross lapping, drawing-off, the folder net is prewetted, and the water thorn is pricked and is done, drying and shaping, storage cloth is reeled, and cuts packing.
1) gets the raw materials ready: high-quality absorbent cotton or color cotton are ready to, so that next procedure is used.
2) shredding: adopt fibre-opening unit having, the raw material shredding is become the filament state.Absorbent cotton of getting ready or color cotton process conveyer belt are sent into pre-blowing machine, carry out preliminary shredding, send into big storehouse cotton blender machine through defeated cotton blower fan then, the fiber that various length, fiber number are differed fully mixes, a mixed raw material part is taken out of through blower fan by the pin nail and is sent into next process, part has been stored and has been used as follow-up output, has so just avoided frequent feeding raw material, greatly reduces operative employee's labour intensity.The raw material of being sent out by blower fan enters fine opener, makes raw material further shredding becoming filament state.
3) remove micronic dust: utilize little dust removal machine, remove some small dust, impurity in the raw material, and the raw material that is the filament state makes whole dust removal process clean, thoroughly, has further improved the cleanliness factor of product.
4) combing: make fiber form the uniform fibers net; Adopt carding machine, utilize the card clothing of various models rotations and velocity of rotation, the direction of different card clothing to divide comb fully to fiber, removal of contamination reaches the parallel filament state that stretches, and fiber is fully mixed, and forms the uniform fibers net at last.
5) cross lapping: adopt cross lapping machine (cross lapping device) that fibre web is back and forth interlocked and evenly spread out, make the powerful in length and breadth unified of fibre web, and then improve the intensity of product; Cross lapping mainly is the performance that changes fibre web and product, utilize each motion of input curtain, compensation curtain, lapping curtain (dolly), output curtain, under the situation of performance carding machine fabric width, the fabric width that changes fibre web is adjusted the fabric width of product, change the uniformity that the fibre web number of plies guarantees product, the number of plies and the degree of draft that change fibre web are controlled the quantitative of product, and what change fibre web improves the inherent comprehensive powerful of product to arrangement in length and breadth.Fiber can reach 1: 1 to the brute force ratio in length and breadth through behind the cross lapping.
6) drawing-off: adopt drawing machine (drafting system), utilize 7 to grip card clothing roller and 7 groups of (3 every group) drawing-off card clothing rollers, fiber 7 draw zones have been formed, each roller of draw zone is controlled by motor band decelerator, regulate each rotating speed of motor and can regulate the speed in each district, the draw ratio of first draw zone is about 19%, and second is about 14.5%, remaining 5 all is about 13%, the aforementioned speed-up ratio that is.Can change tension force, intensity, grammes per square metre and the production capacity of fibre web by regulating draft speed, further improve the arrangement of fiber, make between fibrage and the layer and combine closely, to reduce the layering after water stings.
7) the folder net is prewetted: please refer to shown in Figure 2ly, send into spun-laced machine through the fibre web 20 that is shaped and reinforce, at first is that pre-humidifying is handled, and makes fibre web enter the energy that water thorn Qu Houneng absorbs water jet effectively, with reinforcing fibre entanglement effect.This example adopts the clipping horizontal feeding type of two nets to prewet, fibre web 20 under the clamping of two layers polyester net 10 up and down, the level feeding, water thorn device 1 is prewetted through prewetting.This mode can reduce that fiber produces unexpected displacement in the fibre web in the process of prewetting, and effectively compresses the fluffy fiber net input district of prewetting.The fibre web control and the effect of prewetting are better than cylinder with holes and defeated lace curtaining method of clamping, are fit to the production technology of high line speed.
8) water thorn: please refer to shown in Figure 2, the little water column of high pressure that adopts spun-laced machine group (water thorn device) to utilize the water under high pressure tartar to penetrate by water needle plate, thus the fiber typing is tangled and tangle and reinforce the nonwoven fabric that formation has certain intensity in positive and negative.The water thorn reinforcing mode that this example adopts the circle drum to combine with plain net: carry out the plain net water thorn first time by a plain net water thorn device 21, the fibre web reverse side is carried out the water thorn to be reinforced, justify bulging water thorn by circle drum water thorn device 22, carry out the plain net water thorn second time by secondary plain net water thorn device 23; Corresponding is distributed in the three road water thorns, the use number of water jet and pressure can change with the change of product specification, the recoil water of plain net water thorn stings the about 2.5MPa of pressure for the first time, circle drum water thorn pressure is about 2.5MPa, the 3rd road plain net water thorn adopts three its pressure of water jet to be followed successively by 6MPa, 6.5MPa, 2.5MPa arbitrarily, and remaining water jet can.First road low-pressure water thorn is in order to prewet and the compacting fibre web, the second road water under high pressure thorn be to fibre web reinforce, moulding, the 3rd road low-pressure water thorn has been the effect of shaping.Wherein circle drum water thorn adopts three grades of circle drum water thorns, carrying out first time circle drum water by circle drum water thorn device 221 once stings, carry out the circle drum water thorn second time by secondary circle drum water thorn device 222, carry out circle drum water thorn for the third time by three circle drum water thorn devices 223, by the setting of circle drum, the fibre web direction of motion changes, and the direction of adjacent circle drum water thorn is opposite, can in very little locus, finish the fibre web thorn of repeatedly just turning one's coat, strengthen the entanglement effect.The plain net water jet process is simple in structure, be convenient to maintenance, low cost of manufacture, and its weak point is to cause the damage of fiber easily, influences brute force, uniformity and the surface quality of product.
In the circle drum water jet process, water jet is along circle drum circumferential arrangement, and fibre web is adsorbed on the rotary drum, accepts the injection of the water jet of water jet ejection.Rotate synchronously with same angular speed between processed fibre web, transmission net and the rotary drum, in whole water thorn process, do not have relative displacement, eliminated the fiber quilt phenomenon of " shearing " in the flat screen type water thorn device.Fibre web is adsorbed on the rotary drum, does not have deviation phenomenon, helps high-speed production, and fibre web is non-plane motion in water thorn district simultaneously, accepts water thorn face and loosens, and the reverse side compression helps water jet like this and penetrates, effectively entangled fiber.
The hole for water spraying of spun-laced machine water spray plate ejects the fine water jet of multiply, vertical directive fibre web.Water jet makes that a part of surface fibre is subjected to displacement in the fibre web, comprises the vertical motion to the fibre web reverse side, after water jet penetrates fibre web, is subjected to holding in the palm the rebound effect of lace curtaining or rotary drum, scatters to the reverse side of fibre web with different orientation.Water jet directly impact and the double action of the current that rebound under, the fiber in the fibre web is subjected to displacement, interts, entanglement, obvolvent, forms numerous flexible entanglement point, thereby makes fibre web obtain reinforcing.
Rotary drum is the metallic cylinder perforation structure, in establish dewater unit, compare with the holder lace curtaining that plain net water thorn is reinforced, current are had good rebound effect.Simultaneously, because the minimizing of surface area, the suction effect of water thorn waste water is better, and because of the disconnected fiber of " being cut ", " pulling " also fewer, thereby both saved raw material, alleviated pollution, reduced the maintenance capacity of equipment again recirculated water, increase the life cycle of equipment, reached the purpose that reduces cost, saves the energy.
Therefore, the flat screen type that this example adopts can be maximized favourable factors and minimized unfavourable ones performance advantage separately with circle drum-type compound mode.
9) bundle is done: adopt the dried machine of bundle that part moisture in the fibre web of water thorn end back is squeezed, help reducing the drying energy consumption.
10) drying and shaping: through the fiber of water thorn processed, when it left the bundle dry systems, the water capacity of fibre web was still high, and water thorn line speed is fast, thereby needed drying plant that dry efficiency is high of configuration, in time product was dried.Dryer is by deep fat portion's circulation within it, with air in the heat heating drying room that distributes, utilizes a circulating fan again, forms negative pressure around drying cylinder, forms hot air convection formula heat transfer drying, reaches the purpose of flash baking typing.
11) storage cloth is reeled: adopt lapper will become the examination paper of certain fabric width and length by the product clot that technological requirement is produced.
12) cut: the nonwoven fabric cutting machine cuts into the similar and different little nonwoven fabric roll of a plurality of width to nonwoven fabric roll as required.
13) packing.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (10)
1. production technique of pure cotton non-woven fabrics, it is characterized in that: its process sequence comprises:
Cross lapping: reciprocal interlocking of fibre web evenly spread out;
Drawing-off: utilize different draft speeds to adjust the arrangement of fiber;
The folder net is prewetted: fibre web is carried out pre-humidifying handle;
Plain net water thorn: utilize water jet that the fibre web of parallel motion is tangled;
Circle drum water thorn: utilize water jet that the fibre web of circular motion is tangled;
Secondary plain net water thorn: utilize water jet that the fibre web of parallel motion is tangled once more.
2. production technique of pure cotton non-woven fabrics as claimed in claim 1 is characterized in that: described plain net water thorn is opposite to the water thorn direction of fibre web with described secondary plain net water thorn.
3. production technique of pure cotton non-woven fabrics as claimed in claim 1 is characterized in that: described circle drum water thorn comprises once circle drum water thorn, secondary circle drum water thorn and three circle drum water thorns; Water thorn direction to fibre web between the adjacent circle drum water thorn step is opposite.
4. production technique of pure cotton non-woven fabrics as claimed in claim 1 is characterized in that: described pre-wet process adopts two flat feeding types of network folder water holding to prewet.
5. production technique of pure cotton non-woven fabrics as claimed in claim 3, it is characterized in that: described plain net water thorn, once in circle drum water thorn, secondary circle drum water thorn, three circle drum water thorns and the secondary plain net water thorn, the water thorn direction to fibre web between the thorn that borders on the river the mutually step is opposite.
6. as each described production technique of pure cotton non-woven fabrics among the claim 1-5, it is characterized in that: before described cross lapping operation, also order comprises shredding, removes micronic dust, combing.
7. as each described production technique of pure cotton non-woven fabrics among the claim 1-5, it is characterized in that: described drawing-off adopts many groups to grip card clothing roller and drawing-off card clothing roller, forms the multistage drafting of a plurality of draw zones.
8. a pure cotton non-woven fabrics production equipment is characterized in that, comprise that order is connected with lower device:
Cross lapping device: be used for reciprocal interlocking of fibre web evenly spread out;
Drafting system: utilize different draft speeds to adjust the arrangement of fiber;
The folder net device of prewetting: fibre web is carried out pre-humidifying handle;
Plain net water thorn device: utilize water jet that the fibre web of parallel motion is tangled;
Circle drum water thorn device: utilize water jet that the fibre web of circular motion is tangled;
Secondary plain net water thorn device: utilize water jet that the fibre web of parallel motion is tangled once more.
9. pure cotton non-woven fabrics production equipment as claimed in claim 8 is characterized in that: described circle drum water thorn device comprises once circle drum water thorn device, secondary circle drum water thorn device and three circle drum water thorn devices; Adjacent circle drum water thorn device is opposite to the water thorn direction of fibre web.
10. pure cotton non-woven fabrics production equipment as claimed in claim 8 or 9, it is characterized in that: before described cross lapping device, also comprise fibre-opening unit having, little dust removal machine and carding machine, the three is connected in proper order.
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