CN1869307B - Process and device for making a nonwoven fabric - Google Patents
Process and device for making a nonwoven fabric Download PDFInfo
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- CN1869307B CN1869307B CN2006100845107A CN200610084510A CN1869307B CN 1869307 B CN1869307 B CN 1869307B CN 2006100845107 A CN2006100845107 A CN 2006100845107A CN 200610084510 A CN200610084510 A CN 200610084510A CN 1869307 B CN1869307 B CN 1869307B
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/12—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with filaments or yarns secured together by chemical or thermo-activatable bonding agents, e.g. adhesives, applied or incorporated in liquid or solid form
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
- D04H3/147—Composite yarns or filaments
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/16—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Abstract
This invention relates to a method for making spun-bonded fabric by means of natural crimp filament, wherein the filament passes through a stretching unit, and a diffuser. Then the filament is layered on a layering unit to be crimp filament. The layered filament and the layering unit pass through the fixing device that uses fluid to fix the filament.
Description
Technical field
The present invention relates to a kind of the continuous filament yarn method of making nonwoven fabric and device that is used to carry out this method of adopting.The continuous filament yarn that is made of thermoplastic also within the scope of the invention.With regard to continuous length aspect, continuous filament yarn is different with staple fiber, the length of staple fiber is short-and in 10 to 60mm scope.
Background technology
In fact, utilize the method for a large amount of fabrics of staple fiber manufacturing to be known as " high elastic fabric " (high loft fleece).Adopt this method, fabric on unit independently by stratification and curing.Utilize carding machine that fabric is carried out stratification.Such fabric also is used to the hygienic articles industry and filters in the engineering.Quite thick or a large amount of fabrics that employing is made by continuous filament yarn carry out pilot production.Therefore, the multicomponent filaments that adopts nature to curl.Curling to cause producing convergent force usually, and this convergent force finally can be torn nonwoven fabric.Therefore, nonwoven fabric will lose desired uniformity, thereby the qualified products of producing are less.
Summary of the invention
On the contrary, technical problem of the present invention is based on the special process that adopts continuous filament yarn to make nonwoven fabric, utilizes this technology to control or it is minimized disadvantageous convergent force, thereby can produce thicker or a large amount of nonwoven fabrics easily.In addition, the present invention is based on technical problem to be solved a kind of proper device is provided specially.
In order to solve the problems of the technologies described above, the invention discloses a kind of method that adopts the curling a large amount of nonwoven fabrics of continuous filament yarn manufacturing of nature.
Wherein said long filament is by draw unit and finally pass diffuser,
Wherein the long filament of Juan Quing is placed on the stratification unit,
And these crimp filaments will with the stratification unit together by solidification equipment, at this solidification equipment place, described long filament is subjected to the curing of fluid.Within the scope of the invention, be to utilize hot fluid to carry out curing process, promptly as a kind of heat curing process.Preferably, except that the long filament that curls naturally, can also spin unconvoluted long filament, and it is placed on the stratification unit.
Can make individual layer or multilayer nonwoven fabric according to the present invention.When making the multilayer nonwoven fabric, can utilize nature to curl or unconvoluted long filament or utilize by the mixed filament that curls naturally and unconvoluted long filament constitutes and form each independent layer.Easily, according to nonwoven fabric of the present invention, it is characterized in that comprising the nature crimp filament or by natural crimp filament and the mixed filament that constitutes of crimp filament not at one deck special secondary school door at least.Also can make according to nonwoven fabric of the present invention as the individual layer nonwoven fabric, this nonwoven fabric then is to be made of natural crimp filament fully.
Within the scope of the invention, from spinneret or spinning head continuous filament yarn is carried out spinning.After the spinning, described long filament is cooled off and stretches, wherein particularly on cooling of combining and draw unit, cool off and drawing process.The term here " draw unit " is also represented " cooling of combining and draw unit ".Before long filament was placed into the stratification unit, these long filaments at first will pass through according to diffuser of the present invention.This diffuser is between draw unit and stratification unit, or between cooling, draw unit and stratification unit.Within the scope of the invention, this diffuser is even more important.After the spinning, will handle continuous filament yarn according to " Reicofil III " technology (DE-PS 19620379) and " Reicofil IV " technology (EP-OS1340843) especially.
Within the scope of the invention, need be placed into long filament on the stratification unit, make long filament pass through solidification equipment then with described stratification unit, this fact shows: can by the stratification unit to mechanical performance relatively more weak, short-life long filament wadding (filament batt) leads and support, up to producing durable fabric by the hot fluid curing process.Within the scope of the invention, the long filament of stratiform directly passes through solidification equipment with the stratification unit, and need not to solidify before, for example uses calender (calendar).Preferably, do not need long filament wadding to be carried out mechanical treatment and/or heat treated extras are connected between the wadding of the long filament on stratification unit part and solidification equipment with being used for.Therefore between long filament wadding part and solidification equipment, only transport the long filament wadding by the stratification unit.
In scope according to method of the present invention, adopt hot fluid to carry out heat cure and be meant that the hot fluid by means of gaseous state is cured, particularly utilize hot-air to carry out heat cure.In this technology, hot fluid with transverse to or flow to the long filament wadding perpendicular to the direction on long filament wadding surface.In this solidification equipment, the long filament wadding is subjected to the pressure effect of its lip-deep hot fluid.Therefore, according to the present invention, the pressurization that the long filament wadding is subjected under the air-flow effect of concentrating changes, especially when adopting hot air knife (hot air knife).Within the scope of the invention, the hot fluid temperature that is used for heat cure at least should be on softening point minimum in all filament raw materials of long filament wadding.Adopt this mode can make the long filament wadding more stable.In addition, in framework of the present invention, long filament wadding or nonwoven fabric in interior exposed in flow of heated fluid.
In framework of the present invention, natural crimp filament refers in particular to through after the stratification, and radius of curvature is below the 5mm, be positioned at long filament on the stratification unit with lax state.The largest portion of the feature of described long filament and its length of curling with above-mentioned radius of curvature.This rolled state on the long filament must be able to directly be detected, particularly after the stretched and stratification of long filament, that is to say do not need further long filament to be applied machinery or heat aspect under the situation of influence, just can directly detect this rolled state.According to a preferred embodiment of the present invention, the long filament of Juan Quing has multicomponent filaments naturally, and preferably described multicomponent filaments is arranged to block form, and/or be arranged to eccentric core/cover arrangement.In this long filament,, need in the process of spinning, these raw materials be cooled off accordingly and stretch if different raw materials is placed to together stacked on top of each other.With final yarn speed long filament is carried out after the stratification, these raw materials all have different residual stress.With below long filament stratification last, and no longer have after the air pressure of elongate filaments, in different raw materials, will produce different lax and deferring procedures (contraction); Long filament is produced to curl.Curling quantity on bending radius and each threads length all depends on the cross section and the process conditions of raw material, long filament.In air-flow, especially in diffuser, long filament is carried out before the stratification, long filament can produce significantly and curl.Long filament carries out stratification on the stratification unit, as the long filament that curls, this long filament that shows that at least a portion is curled naturally curled before stratification, and is particularly just curling stretched device after or when being positioned at diffuser inside.Between diffuser and stratification unit, these long filaments still can curl.Long filament carries out stratification on the stratification unit, as the long filament that curls, this fact can not be got rid of long filament that nature curls and still produce curling possibility on being positioned at the stratification unit time.And in curing process subsequently, long filament also shows and further curls or the extra trend of curling of generation.According to the present invention, curling also to become the part of heat cure.
In framework of the present invention, crimp filament does not refer to the long filament of radius of curvature greater than 5mm, and this long filament also is smooth simultaneously and is positioned on the stratification unit.According to a preferred embodiment of the present invention, crimp filament is not single component filaments and/or is the multicomponent filaments that left-and-right-hand core/cover is arranged.Within the scope of the invention, described single component filaments is made of uniform solid-state long filament.
According to a particular, described long filament wadding or nonwoven fabric comprise that at least one deck is by natural crimp filament and the mixed filament that constitutes of crimp filament not.Therefore, preferably the long filament mixture that comes from a spinning head is carried out spinning, and finally it is cooled off and stretch.
Therefore, be positioned on the stratification unit long filament wadding by one deck at least not crimp filament and at least the natural crimp filament that is applied on the above-mentioned not bent filaments layer of one deck constitute.Two or more spinning heads are set continuously.Perhaps can produce the aforesaid filament layer of one deck at least in advance, wherein these filament layers can both turn round on a cylinder.
Within the scope of the invention, the weight that contained natural crimp filament in the layer (placed layer) is set of long filament wadding or nonwoven fabric surpasses 20%, preferably surpasses 30%, more preferably surpasses 40%.In this external framework of the present invention, the remaining long filament part of this long filament wadding or described layer is made of crimp filament not.
Suggestion makes spinning at first by cooling device, then by draw unit, or cooling and draw unit by combining, immediately again by diffuser, and finally on the stratification unit, carry out stratification.In cooling device or cooling of combining and draw unit, can produce the suction of air supply or cold air usually.On diffuser or in the diffuser, or the entrance slit of at least one surrounding air is set between diffuser and draw unit.According to the present invention's one highly preferred embodiment, form a unit by the cooling of cooling device, draw unit or combination and draw unit and diffuser, except to the cooling of cooling device or combination and draw unit air supply and by the air inlet of at least one ambient air inlet slit, this unit is designed to an airtight system.In other words, there is not air not have air to be supplied to this unit in other words substantially.This airtight system self has confirmed especially that it belongs in the framework according to the method for the invention, and can be used for solving according to technical problem of the present invention.
Having mentioned diffuser above is very important according to technical problem of the present invention for solving.Carry out stratification and according to other technology of the present invention before, by means of the diffuser that links to each other with the draw unit that is positioned at its downstream, the nature crimp filament is curled effectively.Just can advantageously produce thicker or a large amount of nonwoven fabrics by this way.
According to the present invention, long filament wadding or nonwoven fabric have been conducted through solidification equipment together with the stratification unit.In other words, nonwoven fabric is transmitted to solidification equipment with the stratification unit, passes through solidification equipment in other words conj.or perhaps.Therefore, this stratification unit is characterised in that and has a stratification unit at least.Within the scope of the invention, described stratification unit comprises delivery unit or the conveyer belt that is used for the long filament wadding.
According to a particular preferred embodiment of the method for the invention, it comprises a stratification unit that shows as permeability type (but air permeable) screen cloth conveyer belt (belt screen) form at least to have used a stratification unit.This screen cloth conveyer belt especially can comprise a continuous band that can be directed on the revolution roller.The screen cloth conveyer belt as the stratification unit, perhaps can be implemented the screen cloth conveyor application in this mode in stratification unit well.
Within the scope of the invention, utilize the nonwoven fabric pressurization of hot fluid in solidification equipment,, particularly be pressed against on the permeability type screen cloth conveyer belt of stratification unit so that nonwoven fabric is pressed against on the stratification unit.The front illustrates, can laterally pressurize to the surface of nonwoven fabric easily by the active force of hot fluid.So, can effectively nonwoven fabric be pressed on stratification unit or the screen cloth conveyer belt, so just can avoid the mobile and contraction opening that appearance is not expected on nonwoven fabric.Within the scope of the invention, hot fluid flows through nonwoven fabric and permeability type screen cloth conveyer belt.On the stratification unit, carry out in the process of heat cure, with hot fluid continuously from respect to the relative direction of the end face of nonwoven fabric and bottom surface to this nonwoven fabric pressurization.
According to a preferred embodiment of the present invention, the stratification unit comprises an independent stratification unit, and particularly a stratification unit that shows as permeability type screen cloth conveyer belt form is sent to nonwoven fabric on this stratification unit (screen cloth conveyer belt) by solidification equipment.Promptly according to the present embodiment, long filament wadding (nonwoven fabric) directly is sent on this independent stratification unit (screen cloth conveyer belt), and need not to connect other device or become layer assembly.Therefore utilize fluid nonwoven fabric to be pressed on stratification unit or the screen cloth conveyer belt by horizontal pressurization.With regard to this embodiment, nonwoven fabric is placed on the top side of stratification unit or screen cloth conveyer belt, and the pressurization that utilizes hot fluid is also from the top.Term " screen cloth conveyer belt " is often referred to traditional screen cloth conveyer belt, and in the production of nonwoven fabric, it can be used as the stratification unit usually.And term " screen cloth conveyer belt " mainly refers to the conveyer of any permeability type, utilize it to transmit long filament wadding or nonwoven fabric, and hot fluid also can flow through this screen cloth conveyer belt.
Another preferred embodiment of the present invention, it is characterized in that the stratification unit comprises the first stratification unit that shows as screen cloth conveyer belt form especially, the spinning that is positioned on this device can be by stratification, and utilize the described first stratification unit nonwoven fabric (long filament wadding) can be sent on the second stratification unit that also shows as screen cloth conveyer belt form especially, utilize this second stratification unit to transmit nonwoven fabric then again and make it pass through solidification equipment.According to the present invention's one highly preferred embodiment, the second stratification unit can transport nonwoven fabric with the transfer rate that reduces with respect to the first stratification unit.According to an embodiment of the present invention, the directly servo-actuated each other of the first and second stratification unit, and need not in the middle of them, to connect other stratification unit or transfer equipment.Utilize this embodiment, nonwoven fabric can directly be sent on the second stratification unit from the first stratification unit.According to another embodiment of the present invention, the 3rd a stratification unit that particularly shows as screen cloth conveyer belt form can be connected between the first and second stratification unit, and Unit one, same back also can transmit nonwoven fabric.According to the modification of an embodiment, below the 3rd stratification unit, especially on the bottom surface of the 3rd screen cloth conveyer belt, transmit nonwoven fabric.In this mode, need utilize suction air to make nonwoven fabric remain on the downside of the 3rd stratification unit easily.In the scope of this embodiment of the present invention, reduce from the transfer rate of the nonwoven fabric of three stratification unit, the first stratification unit to the, and the transfer rate from the 3rd stratification unit to the nonwoven fabric of the second stratification unit also reduces.
An embodiment of the present invention is characterized in that the long filament on the first stratification unit end face is carried out stratification, sends it to second stratification unit together with this first stratification unit then.Then the long filament wadding directly is transferred to the second stratification unit from the first stratification unit, then on the bottom surface of the second stratification unit, solidification equipment is passed through in its transmission.Utilize this embodiment of the present invention in addition, the first stratification unit and the second stratification unit preferably are made of the screen cloth conveyer belt.The transfer rate of the second stratification unit is less than the transfer rate of the first stratification unit.
Another embodiment of the present invention, it is characterized in that on the first stratification unit, long filament being carried out stratification, preferred stratification on the first screen cloth conveyer belt is subsequently in the first stratification unit with preferably show as and transport long filament between the second stratification unit of the second screen cloth conveyer belt form and make it pass through solidification equipment.In the process of heat cure, nonwoven fabric is remained between low screen cloth conveyer belt and the top mesh conveyer belt easily.
Within the scope of the invention, be subjected to nonwoven fabric last curing of final acceptance in solidification equipment of thermmohardening.Described last curing is particularly including the water jet curing to nonwoven fabric.
In addition, the purpose of this invention is to provide a kind of device of making a large amount of nonwoven fabrics,, have the long filament that nature curls to be used to produce comprising at least one device for spinning; In addition, an available stratification unit is to be used for having the long filament stratification of nature curl characteristics; One be used to solidify the solidification equipment of long filament wadding (nonwoven fabric) and long filament wadding (nonwoven fabric) be arranged so that it can directly pass through solidification equipment with the stratification unit.According to the present invention's one preferred embodiment, can also utilize this device to produce unconvoluted long filament.
Within the scope of the invention, long filament wadding can be with the stratification unit directly by solidification equipment, and this fact shows particularly do not have other solidification equipment between long filament wadding part and solidification equipment particularly do not have calender.One preferred embodiment of device of the present invention is characterized in that being provided with the cooling and the draw unit that are used for long filament between spinning equipment and stratification unit.Between draw unit and stratification unit, also be provided with the diffuser that is used for long filament.
Based on the understanding of the present invention, can produce a large amount of or thicker nonwoven fabric according to method and apparatus of the present invention, these fabrics have outstanding quality and uniform characteristic.Aspect thickness, can compare with existing " the high elasticity bondedfibre fabric " that produces by staple fiber according to these a large amount of nonwoven fabrics that the present invention produces.Within the scope of the invention, particularly importantly can make nonwoven fabric, so just can not exist because the uncontrolled inhomogeneities that convergent force or opening or hole cause by continuous fiber.Utilization can realize effective control to convergent force according to method of the present invention.Can adopt hot fluid to solidify by direct heat, therefore can by keep or even the thickness that increases nonwoven fabric carry out fixing effectively to the multiplicity of filaments wadding that utilizes crimp filament especially and obtain.So based on the understanding of the present invention, utilize the stratification unit, can directly be driven into the wadding of the long filament on this stratification unit in the thermal-curable system, and described long filament wadding can be supported effectively and be guided, utilize direct heat to solidify in addition, can fix and can not produce by the internal contraction active force and cause the disconnection of long filament wadding or be damaged the long filament wadding.
Description of drawings
Below will the present invention is described in detail according to the schematic figures of a typical embodiments.Following accompanying drawing schematically shows:
Fig. 1 is the side view according to first embodiment of the present invention's one device,
Fig. 2 be in second embodiment according to device shown in Figure 1,
Fig. 3 be in the 3rd embodiment according to device shown in Figure 1,
Fig. 4 be in the 4th embodiment according to device shown in Figure 1,
Fig. 5 be in the 5th embodiment according to device shown in Figure 1,
Fig. 6 be in the 6th embodiment according to device shown in Figure 1,
Fig. 7 be in the 7th embodiment according to device shown in Figure 1,
Fig. 8 is the profile according to bicomponent filament of the present invention,
Fig. 9 be in another embodiment according to object shown in Figure 8,
Figure 10 be in the another embodiment according to object shown in Figure 8,
Figure 11 is according to object shown in Figure 8 in the another embodiment.
The specific embodiment
Fig. 1 to 7 shows according to the present invention and utilizes continuous filament yarn 2,3 to make the device of the method for a large amount of nonwoven fabrics 1.With long filament 2 and being spun of curling naturally, on stratification unit 4, carry out stratification then with unconvoluted long filament 3.Naturally the long filament 2 that curls described here can be that eccentric core/cover is arranged the long filament 2 of (Fig. 9), or the long filament 2 of block form (Figure 10 and 11).In Figure 10, bicomponent filament 2 is the block form of symmetry, and in Figure 11, bicomponent filament is asymmetrical block form.The long filament (not shown) of one pack system also can be used as unconvoluted long filament 3, or has multicomponent filaments or bicomponent filament 3 that left-and-right-hand core/cover is arranged (Fig. 8).
Device for spinning is at first transported cooling device (not shown) by being used to cool off expediently together with one or more spinning (spun filament) 2,3 (not shown), and is transported the draw unit (also not shown) by being used for elongate filaments 2,3 at last.According to the present invention, as Fig. 1 to 7 schematically shown in, the diffuser 5 that has the diffuser wall of dispersion links to each other with this draw unit.At the end of this diffuser, long filament 2,3 is placed on the stratification unit 4.Utilize this stratification unit 4, can directly send long filament 2,3 to solidification equipment 6, on this solidification equipment, long filament 2,3 is subjected to the curing of hot fluid, preferably adopts hot-air to carry out heat cure.In Fig. 1 to 7, long filament 2,3 is directly carried together with stratification unit 4 and is carried out the hot fluid curing process obviously, and need not the connection of intermediate solidification device.In Fig. 1 to 7, adopt the hot-air pressing mode to illustrate in the solidification equipment 6 by arrow plot.These arrows strike on the surface of stratification unit 4 with representing the hot-air preferred vertical, and vertically or substantially vertically strike on the surface of nonwoven fabric 1.Therefore, by the hot-air pressurization, nonwoven fabric 1 just is crushed on the stratification unit 4.To shown in Figure 7, below diffuser 5, can also see an arrow as Fig. 1.This arrow is illustrated under the stratification unit 4, under the wadding of diffuser 5 bottoms or long filament 2,3, air has been drawn through ventilative stratification unit 4, thereby guarantees in the ordinary way to long filament 2,3 stratification safely.
Fig. 1 shows first embodiment according to apparatus of the present invention, and wherein stratification unit 4 has an independent stratification unit that shows as screen cloth conveyer belt 7 forms.Below diffuser 5, directly be directed on the top side of the described screen cloth conveyer belt 7 that is positioned at solidification equipment 6, and in this position, long filament wadding or nonwoven fabric 1 are subjected to the heat cure of hot-air by the long filament 2,3 of stratification.Because aforementioned " loose " long filament wadding is defeated on screen cloth conveyer belt 7 by pneumatic action, that therefore can avoid effectively occurring in nonwoven fabric 1 not expecting obtaining moves or shrinks opening.
In according to exemplary shown in Figure 2, stratification unit 4 has first a stratification unit that shows as the first screen cloth conveyer belt, 7 forms, can carry out stratification to spinning 2,3 thereon.Utilize the first screen cloth conveyer belt 7, nonwoven fabric 1 can be sent to the second stratification unit that shows as the second screen cloth conveyer belt, 8 forms, this second screen cloth conveyer belt 8 is transferred together with nonwoven fabric 1 and has passed through solidification equipment 6.On the top side of two screen cloth conveyer belts 7,8, transmit nonwoven fabric 1, and can directly nonwoven fabric 1 be transferred to the second screen cloth conveyer belt 8 from the first screen cloth conveyer belt 7, and need not that setting can be with they interconnective stratification unit in the middle of them.According to the preferred embodiments of the invention, the transfer rate that makes the second screen cloth conveyer belt 8 reduces with respect to the transfer rate of the first screen cloth conveyer belt 7.In addition, reduce, can compensate effectively and not expect the tendencies toward shrinkage that obtains in the long filament wadding by speed from the first screen cloth conveyer belt, 7 to second screen cloth conveyer belts 8.
In the embodiment depicted in fig. 3, stratification unit 4 comprises the first stratification unit that shows as the first screen cloth conveyer belt, 7 forms, the second stratification unit that shows as the second screen cloth conveyer belt, 8 forms, and the 3rd stratification unit that shows as the 3rd screen cloth conveyer belt 9 forms.At first on the first screen cloth conveyer belt 7, long filament 2,3 is carried out stratification, along the direction shown in the arrow long filament is transferred on the 3rd screen cloth conveyer belt 9 left as shown in Figure 3 then.The long filament wadding that is positioned on the first screen cloth conveyer belt, 7 top sides is transferred under the 3rd screen cloth conveyer belt 9.In carrying out this process, utilizing bleeds remains on below the 3rd screen cloth conveyer belt 9 the long filament wadding.Figure 3 illustrates on the 3rd screen cloth conveyer belt 9 with arrow and to bleed.Then the bottom surface of long filament wadding from the 3rd screen cloth conveyer belt 9 is sent on the top side of the second screen cloth conveyer belt 8.As shown in Figure 3, the bottom surface of the 3rd screen cloth conveyer belt 9 can be overlapping with the top side of the first screen cloth conveyer belt 7 and the second screen cloth conveyer belt 8 obviously.The long filament wadding that will be positioned at then on the second screen cloth conveyer belt, 8 top sides transmits by solidification equipment 6 together with the second screen cloth conveyer belt 8.According to particular preferred embodiment of the present invention,, and all reducing from the transfer rate of the 3rd screen cloth conveyer belt 9 to second screen cloth conveyer belts 8 from the transfer rate of the first screen cloth conveyer belt, 7 to the 3rd screen cloth conveyer belts 9.In other words, in the embodiment depicted in fig. 3, the first screen cloth conveyer belt 7 is with the fastest transfer rate running, and the 3rd screen cloth conveyer belt 9 is with the second fast speed running, and the second screen cloth conveyer belt 8 is then with the slowest speed running.
In addition,, on the first screen cloth conveyer belt 7, long filament 2,3 is carried out stratification, at first transmit along the direction of solidification equipment 6 left then in the top side of this first screen cloth conveyer belt 7 according to embodiment shown in Figure 4.Finally the long filament wadding is incorporated in the gap 10, wherein said gap is limited by first lower screen cloth conveyer belt 7 and the second high screen cloth conveyer belt 8.The long filament wadding is transmitted through solidification equipment 6 in gap 10.By the pneumatic action power in the solidification equipment 6, long filament on the first screen cloth conveyer belt, 7 top sides wadding is lifted, and be crushed on the second screen cloth conveyer belt 8 below, also from the second screen cloth conveyer belt 8, further transmitted left simultaneously.
According to schematic embodiment shown in Figure 5, in the top side of the first screen cloth conveyer belt 7 long filament 2,3 is carried out stratification, the direction along solidification equipment 6 transmits left then.In the front of solidification equipment 6, long filament wadding contacts with the second screen cloth conveyer belt 8 on top, and is sent to the downside of the second screen cloth conveyer belt 8 from the first screen cloth conveyer belt 7, promptly is transported to the downside of the second screen cloth conveyer belt 8 by solidification equipment 6.Utilize pneumatic action power in the solidification equipment 6 long filament wadding to be remained on the downside of the second screen cloth conveyer belt 8 whereby.Exemplary is the same as shown in Figure 4, and the transfer rate that preferably makes the second screen cloth conveyer belt 8 here reduces with respect to the transfer rate of the first screen cloth conveyer belt 7.
Figure 6 illustrates modification according to the another embodiment of apparatus of the present invention.Identical with other device through modification, in the top side of the first screen cloth conveyer belt 7 long filament 2,3 is carried out stratification, and transmit left along the direction of solidification equipment 6.The second top mesh conveyer belt 8 is set in the zone of solidification equipment 6.The first lower screen cloth conveyer belt 7 has formed the gap with the second top mesh conveyer belt 8, nonwoven fabric 1 is sent in this gap by solidification equipment 6, in the embodiment of this modification, nonwoven fabric 1 both had been positioned on the top side of the first screen cloth conveyer belt 7, also was positioned at the downside of the second screen cloth conveyer belt 8 simultaneously.Therefore nonwoven fabric 1 can be clamped between the screen cloth conveyer belt 7,8 simultaneously.
The modification of device shown in Figure 7 is applicable to and is divided into two-layer nonwoven fabric 1.Here be provided with two spinning head (not shown), utilize these two spinning heads long filament 2,3 can be spun, on the long filament wadding part that is arranged in according to this on the first screen cloth conveyer belt, 7 top sides, long filament is carried out stratification then.Then these two long filament waddings directly are transferred to the second screen cloth conveyer belt 8 from the first screen cloth conveyer belt 7, further are transmitted in the top of the second screen cloth conveyer belt 8, and send solidification equipment 6 to.As shown in Figure 7, the scope of clearly bleeding not only is present under two diffusers 5, also is present between the long filament wadding part or under the first screen cloth conveyer belt 7 between two diffusers 5.By interconnecting of the zone of bleeding, the mobile or contraction opening that can prevent to occur not expecting to obtain in first long filament wadding is up to having formed second long filament wadding.
Claims (16)
1. use nature crimp filament (2) to make the method for nonwoven fabric (1), wherein, long filament (2) passes through draw unit, and immediately by diffuser (5), wherein, the long filament that at least a portion is curled had naturally formed curling before stratification when being positioned at diffuser inside, and long filament is as crimp filament, stratification on a stratification unit, the solidification equipment that these are cured long filament (2) by available fluid with the stratification unit through the crimp filament of stratification.
2. the method for claim 1, wherein as heat curing process, be cured technology with hot fluid.
3. method as claimed in claim 1 or 2, wherein, the long filament of Juan Quing (2) comprises multicomponent filaments naturally, the described long filament that curls naturally has the multicomponent filaments that block form is arranged and/or eccentric core/cover is arranged.
4. method as claimed in claim 1 or 2 wherein, except that nature crimp filament (2), also can spin and on the stratification unit it be carried out stratification crimp filament (3) not.
5. method as claimed in claim 4, wherein, crimp filament (3) is not single component filaments and/or has the multicomponent filaments that left-and-right-hand core/cover is arranged.
6. method as claimed in claim 5, wherein, nonwoven fabric (1) is characterised in that wherein that at least one deck comprises the nature crimp filament (2) and the mixture of crimp filament (3) not.
7. method as claimed in claim 6, wherein, this layer is characterised in that the percentage by weight of nature crimp filament (2) is greater than 20%.
8. method as claimed in claim 1 or 2 wherein, is used stratification unit (4), and it comprises that at least one shows as the stratification unit of permeability type screen cloth conveyer belt form.
9. method as claimed in claim 2 wherein,, makes on its permeability type screen cloth conveyer belt that is resisted against stratification unit (4) the pressurization of the nonwoven fabric (1) in the solidification equipment (6) with hot fluid, makes nonwoven fabric (1) be pressed against on the stratification unit (4).
10. method as claimed in claim 1 or 2, wherein, this stratification unit (4) comprises an independent stratification unit, its form is screen cloth conveyer belt (7), on this independent stratification unit nonwoven fabric (1) is transported by solidification equipment (6).
11. method as claimed in claim 1 or 2, wherein, stratification unit (4) comprises the first stratification unit, its form is the first screen cloth conveyer belt (7), on this first stratification unit stratification is carried out in spinning (2,3), nonwoven fabric (1) is sent to the second stratification unit with the first stratification unit, the form of the second stratification unit is the second screen cloth conveyer belt (8), and nonwoven fabric is transmitted through solidification equipment (6) with the second stratification unit.
12. method as claimed in claim 11, wherein, the second stratification unit transports nonwoven fabric (1) with the transfer rate that reduces with respect to the first stratification unit.
13. method as claimed in claim 1 or 2 wherein, is carried out stratification in the top side of the first stratification unit to nonwoven fabric (1), and at the downside of the second stratification unit this nonwoven fabric is transmitted by solidification equipment (6).
14. method as claimed in claim 1 or 2 wherein, is carried out stratification in the top side of the first stratification unit to nonwoven fabric (1), and transports this nonwoven fabric at last make it pass through solidification equipment (6) between the first stratification unit and another stratification unit.
15. method as claimed in claim 1 or 2, wherein, the nonwoven fabric of process heat cure finally is subjected to curing to the end.
16. method as claimed in claim 7, wherein, the percentage by weight of described natural crimp filament (2) is greater than 30%.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP05011330.7 | 2005-05-25 | ||
| EP05011330A EP1726699A1 (en) | 2005-05-25 | 2005-05-25 | Process and device for making a nonwoven fabric |
| EP06008625A EP1726700B1 (en) | 2005-05-25 | 2006-04-26 | Process and device for making a nonwoven fabric |
| EP06008625.3 | 2006-04-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1869307A CN1869307A (en) | 2006-11-29 |
| CN1869307B true CN1869307B (en) | 2011-06-22 |
Family
ID=34980370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006100845107A Active CN1869307B (en) | 2005-05-25 | 2006-05-25 | Process and device for making a nonwoven fabric |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1726699A1 (en) |
| CN (1) | CN1869307B (en) |
| DK (1) | DK1726700T3 (en) |
| ES (1) | ES2406002T3 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE483052T1 (en) * | 2006-12-06 | 2010-10-15 | Reifenhaeuser Gmbh & Co Kg | METHOD AND DEVICE FOR PRODUCING A SPUNNED WEB |
| DE102010009275A1 (en) * | 2010-02-25 | 2011-08-25 | Trützschler Nonwovens GmbH, 63329 | Device for solidifying a material web |
| EP3382080B1 (en) * | 2017-03-28 | 2019-08-07 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Method and device for producing a non-woven fabric from fibres |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929542A (en) * | 1970-11-03 | 1975-12-30 | Basf Farben & Fasern | Non-woven webs of filaments of synthetic high molecular weight polymers and process for the manufacture thereof |
| EP0391260B1 (en) * | 1989-04-06 | 1994-06-22 | Chisso Corporation | Method for manufacturing bulky nonwoven fabrics |
| WO2000028123A1 (en) * | 1998-11-12 | 2000-05-18 | Kimberly-Clark Worldwide, Inc. | Crimped multicomponent fibers and methods of making same |
| WO2002057525A3 (en) * | 2000-12-22 | 2003-01-30 | Kimberly Clark Co | In-line heat treatment of homofilament crimp fibers |
| WO2003027364A1 (en) * | 2001-09-26 | 2003-04-03 | E. I. Du Pont De Nemours And Company | Stretchable multiple component spunbond webs and a process for making |
| WO2003056089A1 (en) * | 2001-12-21 | 2003-07-10 | Kimberly-Clark Worldwide, Inc. | High loft low density nonwoven webs of crimped filaments and methods of making same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2623330B2 (en) * | 1987-06-10 | 1997-06-25 | 鐘紡株式会社 | Laterally stretchable fabric and method for producing the same |
-
2005
- 2005-05-25 EP EP05011330A patent/EP1726699A1/en not_active Withdrawn
-
2006
- 2006-04-26 ES ES06008625T patent/ES2406002T3/en active Active
- 2006-04-26 DK DK06008625T patent/DK1726700T3/en active
- 2006-05-25 CN CN2006100845107A patent/CN1869307B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3929542A (en) * | 1970-11-03 | 1975-12-30 | Basf Farben & Fasern | Non-woven webs of filaments of synthetic high molecular weight polymers and process for the manufacture thereof |
| EP0391260B1 (en) * | 1989-04-06 | 1994-06-22 | Chisso Corporation | Method for manufacturing bulky nonwoven fabrics |
| WO2000028123A1 (en) * | 1998-11-12 | 2000-05-18 | Kimberly-Clark Worldwide, Inc. | Crimped multicomponent fibers and methods of making same |
| CN1100904C (en) * | 1998-11-12 | 2003-02-05 | 金伯利-克拉克环球有限公司 | Crimped multicomponent fibers and methods of making same |
| WO2002057525A3 (en) * | 2000-12-22 | 2003-01-30 | Kimberly Clark Co | In-line heat treatment of homofilament crimp fibers |
| WO2003027364A1 (en) * | 2001-09-26 | 2003-04-03 | E. I. Du Pont De Nemours And Company | Stretchable multiple component spunbond webs and a process for making |
| WO2003056089A1 (en) * | 2001-12-21 | 2003-07-10 | Kimberly-Clark Worldwide, Inc. | High loft low density nonwoven webs of crimped filaments and methods of making same |
Also Published As
| Publication number | Publication date |
|---|---|
| DK1726700T3 (en) | 2013-05-06 |
| CN1869307A (en) | 2006-11-29 |
| EP1726699A1 (en) | 2006-11-29 |
| ES2406002T3 (en) | 2013-06-04 |
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