CN116815421B - Method for forming a nonwoven fabric made of a multilayer fiber web by means of a cross-lapper, a cross-lapper and its use - Google Patents
Method for forming a nonwoven fabric made of a multilayer fiber web by means of a cross-lapper, a cross-lapper and its useInfo
- Publication number
- CN116815421B CN116815421B CN202310761183.8A CN202310761183A CN116815421B CN 116815421 B CN116815421 B CN 116815421B CN 202310761183 A CN202310761183 A CN 202310761183A CN 116815421 B CN116815421 B CN 116815421B
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- China
- Prior art keywords
- width
- cross
- linear speed
- web
- lapping machine
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Classifications
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
- D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
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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
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/44—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
- D04H1/465—Hydraulic needling
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
- D01G25/00—Lap-forming devices not integral with machines specified above
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Preliminary Treatment Of Fibers (AREA)
Abstract
本发明涉及一种借助于交叉铺网机形成由多层纤维网制成的无纺织物的方法，由纤维网制成的多个层借助所述交叉铺网机而相互叠置，以便调节预定的工作宽度，其中，借助于所述交叉铺网机，已铺设的纤维网的铺设宽度由预定的所述工作宽度减小至引入宽度，以便生产引入条带。此外，本发明还涉及该种交叉铺网机及其应用。
The present invention relates to a method for forming a nonwoven fabric made of a multilayer fiber web by means of a cross-lapper, wherein a plurality of layers made of a fiber web are laid one on top of the other by means of the cross-lapper in order to adjust a predetermined working width, wherein the laying width of the laid fiber web is reduced by means of the cross-lapper from the predetermined working width to an introduction width in order to produce an introduction strip. The invention also relates to such a cross-lapper and its use.
Description
Technical Field
The invention relates to a method for forming a nonwoven from a multi-layer web by means of a cross-lapping machine, in particular according to the independent claims, to such a cross-lapping machine and to the use thereof.
Background
To produce a multilayer nonwoven fabric, carding machines with downstream cross lapping machines are often used. When applied to such carding machines, the bulk fibers are fed on the input side, are loosened to the individual fibers and are output on the removal side as an uncured woven planar formation, i.e. a web.
The cross-lapper includes at least one conveyor belt that conveys the web from an input area of the cross-lapper to a laying apparatus. The laying device is configured to place the web on the output belt in a state rotated 90 ° relative to the input direction. The laying device can be configured as a laying arm, which is commercially available, for example, as a super-laying machine (HYPERLAYER), or as a back-and-forth moving laying carriage, which places the web on the output belt in a laying gap at an angle of 90 ° to the input direction between two surrounding conveyor belts. The nonwoven fabric thus produced can be reinforced, for example, in a downstream needling machine, a water jet reinforcement device or a thermal bonding machine.
Cross lappers of the above type are known from EP2881509B1 and EP1854910B 1.
In order to transport the web produced by means of the cross-lapping machine, for example, to a downstream needling machine, a significantly finer web is necessary in order to be able to introduce the nonwoven to be needled into the needling machine and to start the needling machine.
To complete the transport, so-called lead-in strips are used. In this case, it is a narrow strip which does not extend over the entire predetermined working width of the crosslapper and is formed at the beginning of the nonwoven/fibrous web to be produced.
The invention relates to objects of this type.
Such narrow intake strips have traditionally been produced by different methods, such as by partially drawing the web, wherein the width of the draw is continuously reduced, or by "over-blowing" the web into a triangle. It is additionally possible to shut down the entire device after the deactivation of the safety device, to shape the input wedge manually, and to restart the device after the safety of the device has been established again. There is a waste deposit in the form of the cut-out side of the web and the device must be shut down completely.
In the production of the intake strip by means of suction, the fibre web must be divided into a portion to be sucked and a portion which remains on the transport element. Such a division is generally not problematic if the strength of the web in the cross direction is low. If the fiber web has a strength in the transverse direction, for example, a cross-laid nonwoven which has been pre-consolidated by a nonwoven drawing frame is involved, such a division no longer works or works very reliably. Furthermore, if the weight per unit area is too great, suction is problematic or impossible to achieve.
After the start-up of a functional unit, for example a needle machine, which is arranged downstream of the crosslapper, i.e. during its normal operation, the laying width is again increased by the introduction of the strip, in order to produce a predetermined product-specific and possible working width by means of the crosslapper.
Disclosure of Invention
The object of the present invention is therefore to provide a method for forming a nonwoven fabric from a multi-layer web by means of a cross-lapping machine, and also to such a cross-lapping machine and its use, which is improved over the prior art. In particular, it is possible to produce an intake strip for transporting a multi-layer web laid in a cross-lapper into a downstream functional unit, for example a needle machine, without requiring costly additional components, for example suction equipment for the web, in which no web scrap is deposited and without having to bring the equipment to a standstill.
This object is achieved by a method for forming a nonwoven from a multi-layer web by means of a cross-lapper, such a cross-lapper and the use thereof according to the independent claims. The dependent claims describe embodiments of the invention which are particularly advantageous.
In the method according to the invention for forming a nonwoven fabric made of a multi-layer web by means of a cross-lapper, a plurality of layers made of the web are stacked on top of one another by means of a cross-lapper in order to adjust a predetermined working width, wherein the laying width of the laid web is reduced from the predetermined working width to the introduction width by means of the cross-lapper in order to produce the introduction strip.
The disadvantages known from the prior art can be avoided by means of the invention in that the dividing of the web or the partial suction of the web is no longer necessary at all. For this purpose, the crosslapper should not first be placed at the full predetermined working width, but rather only in small laying widths a narrow crosslaid web, i.e. a lead-in strip, which can be used in order to penetrate into the functional units connected to the crosslapper in the working direction. The functional units connected to the cross-lapping machine are understood to be, for example, water jet reinforcement devices, needling machines or dryers.
The production of the introduction strip is preferably carried out on the operating side of the subsequent functional unit. Thereby, the operator can manually (by hand) support the introduction process. The introduction strap is configured on the operating side so that an operator can grasp the introduction strap in certain situations without releasing the safety device. Immediately after the threading process, the laying width of the crossweb machine and the nonwoven width are continuously gradually increased or increased with an optional width increase until the full nonwoven width is reached.
By means of the invention, the introduction strip itself is thereby produced additively by the cross-lapper-and in the normal operation of the cross-lapper, or in the normal operation of a device comprising functional units arranged after the cross-lapper, instead of being cut from an existing web, i.e. formed in a subtractive manner, as in the prior art. In a normal operation, or simply operation, described herein is a state in which the cross-lapper lays a predetermined working width, i.e., the incoming strip is successfully delivered to the following functional unit.
The intake strip is a strip of the fibrous web or nonwoven fabric to be produced, which is also referred to as a material web, the extent of which in the width direction is smaller than the width of the material web running over the complete width. The material web running in full width has a predetermined working width. The latter can be defined by the physical conditions of the cross-lapper and is compatible with the maximum width that can be produced on the cross-lapper. The introduction strip is used to transport the material web between the crosslapper and the downstream functional unit. In this way, for example, the material web can be transported from the crosslapper to the needling machine connected thereto.
The concept of lead-in width defines the width of the lead-in strip, which is smaller than the predetermined working width.
The concept of laying width describes the web width which can be produced by means of a cross-lapper and which can be adjusted at least between the introduction width and the predetermined working width.
According to one embodiment, the introduction width corresponds for example to between 5% and 60% of the predetermined working width. The laying width is at least sufficient to introduce the introduction strip in the subsequent machines and to run these machines. The predetermined working width can be temporarily reduced to the insertion width in order to produce the insertion strip. The duration can likewise be set in order to activate and operate the functional units arranged after the cross-lapping machine.
The width of the insertion strip, viewed in the longitudinal direction, is variable, which is characterized in particular by a continuous change or is held constant over a predefined length range. In this way, the laying width can be increased by the introduction width with each layer of the fibre web which is additionally laid by the cross-lapping machine until a predetermined working width is reached. The increase in the laying width from one layer to the other can be adjusted here, preferably between 30mm and 500 mm. It has been shown that this is sufficient for most functional units that are connected to the cross-lapper in order to be able to transport the incoming strip and to make the functional units operational. Instead of the lay width increasing with each additional layer, the lay width may be increased stepwise with each two layers or multiples of two layers of the web by the introduction width until a predetermined working width is reached. In a similar manner, the increase in lay-up width may be increased by at least 30mm per step.
The longitudinal direction refers to the direction of the nonwoven fabric to be produced, which is perpendicular to the width direction of the nonwoven fabric. The longitudinal direction coincides with the working direction of the cross lapping machine. The working direction can be preset by the output belt of the cross lapping machine. The web or nonwoven to be produced is passed through the crosslapper in the working direction and at the working line speed, i.e. when a predetermined working width of the web is produced.
After leaving the cross-lapping machine, the linear speed, which can be adjusted by the control of the device, must be reduced when the incoming strip is transported to a subsequent functional unit, such as a needling machine or a water jet consolidation device. Whereas the line speed increases with increasing laying width. In this way, in the production of the intake strip, the linear speed of the nonwoven fabric to be produced in the crosslapper is reduced from the working linear speed to the intake linear speed, wherein the linear speed increases with each further layer of the web, preferably from the intake linear speed to the working linear speed. The speed at which the incoming strip is formed is adjustable. The lead-in line speed may be a fraction of the working line speed, for example between 1% and 20% of the working line speed.
The invention also relates to a cross-lapping machine for forming a nonwoven fabric made of a multi-layer web, wherein the cross-lapping machine is arranged such that it can carry out the method according to the invention.
The cross-lapper includes at least one belt that conveys the web from an input area of the cross-lapper to the laying device. The laying device places the webs on the output belt in a state rotated by 90 ° relative to the input direction in order to place one layer of webs on another, wherein a controller is assigned to the cross-lapping machine, which is arranged such that it implements the method according to the invention, and preferably the laying device is operated in order to produce the lead-in strip such that the laying width is reduced by means of the cross-lapping machine from the predetermined working width to the lead-in width.
The laying device can be configured as a laying arm, which is commercially available as a super-laying machine, or as a back-and-forth moving laying carriage, which places the fibre web on the output belt in a laying gap at an angle of 90 ° to the input direction between two encircling conveyor belts. The nonwoven fabric thus produced can be reinforced, for example, in a subsequent needling machine, a water jet reinforcement device or a thermal bonding machine.
The line speed of the device can be regulated by means of the device controller, so that during the production of the incoming strip the line speed is reduced from the working line speed to the incoming line speed, wherein the line speed increases again with each further layer of the web, preferably from the incoming line speed, to the working line speed.
The invention also relates to a combination, also called a device, which is made up of a cross-lapping machine according to the invention and functional units connected to the cross-lapping machine, such as a water jet reinforcement device, a needle machine or a dryer. The apparatus also includes a bulk fiber feeder having a downstream carding machine disposed prior to the cross-lapping machine. The web can also optionally or additionally be fed through an upstream opening station to the cross-lapper.
The invention furthermore relates to the use of a cross-lapping machine by means of which a nonwoven fabric made of a plurality of layers of fibre web can be formed, by reducing the laying width of the laid fibre web from a predetermined working width to an introduction width by means of the cross-lapping machine in order to produce an introduction strip.
The invention also provides a method for transporting a plurality of layers of a web produced by means of a cross-lapper to a functional unit connected to the cross-lapper, comprising the following steps:
a) By reducing the width of the laid web, which is related to the working width, to the run-in width, the run-in strip is produced by means of a cross-lapper,
B) The incoming strip produced in this way is transported to a functional unit downstream of the crosslapper in the web travel direction,
C) After the introduction strip is transported to the downstream functional unit, the introduction width is preferably increased stepwise to a predetermined working width.
The object described in relation to the method according to the invention is substantially similar to the cross-lapping machine according to the invention as well.
Drawings
The advantages of the invention are now further illustrated by means of preferred embodiments and the accompanying drawings.
In the figure:
FIG. 1 shows a schematic side view of a cross-lapping machine according to one possible embodiment;
FIG. 2 shows a perspective view of a cross lapping machine according to one possible embodiment;
FIG. 3 shows a schematic representation of the manner in which a nonwoven fabric is transported from a crosslapper to its downstream functional unit, and
Fig. 4 shows a schematic representation of another way of transporting a nonwoven from a cross-lapping machine to its downstream functional units.
Detailed Description
Fig. 1 and 2 show by way of example and only schematically the principle of a cross-lapping machine 1, in which a laying device is constructed by means of a laying carriage. The laying device can also optionally be constructed by a laying arm. The web 3 produced by the carding device 17 (fig. 3) is transported onto the input belt 2 of the cross-lapper 1. An upper carriage is arranged in the crosslapper 1, but only the turning rolls 6 thereof are visible in the figure. Furthermore, the cross-lapping machine 1 has a laying carriage from which a laying roller 10 for the mating belt 13 and a laying roller 9 for the input belt 2 are shown. A so-called laying gap 11 is provided between the laying roller 10 of the matching belt 13 and the laying roller 9 of the input belt 2, from which the fibre web 3 is removed and placed on an output belt 15 arranged below the laying carriage. The task of the two laying rollers 9, 10, which are mounted as a function of the direction of travel, is to place the web 3 orthogonally to the direction of travel to date (see the thickened arrow in fig. 3) on an output belt 15 arranged below the laying carriage and fold it in this case. In fig. 3, the folding is represented by diagonal lines in the nonwoven fabric 18 produced from the multilayer web 3. For this purpose, the laying carriage is moved back and forth in the horizontal direction over the preconditioned laying width, as indicated by the double arrow in fig. 1 and 2, for example, here over a predetermined working width.
In this embodiment, the input belt 2 is diverted around first and second diverting rollers 4, 5 and around diverting roller 6 of the upper carriage. Above the input belt 2 a cover belt 7 can be arranged, which in the figure is guided around a turning roll 8, a turning roll 6 of the upper carriage and a further turning roll 12. The two belts 2, 7 can be embodied as endless belts driven on at least one further turning roll, not shown. Other constructional variants of the laying carriage which do not interact with the input belt 2 but with further belts are also possible and known.
In this embodiment, the inlet belt 2 and the cover belt 7 do not run parallel, but rather form an open acute angle towards the carding device 17, into which the fibrous web 3 is pulled and slightly compressed. The web 3 is guided around the deflecting roller 6 of the upper carriage, wherein the cover strip 7 is guided laterally away by means of the deflecting roller 12. The web 3 is transported just in the other direction because it is guided around the turning rolls 6 of the upper carriage at an angle of 180 ° and is placed on a mating belt 13 arranged in parallel below the input belt 2. The matching belt 13 and the feed belt 2 now grip or guide the fiber web 3 together up to the laying gap 11, which is essentially formed by the distance between the two laying rollers 9, 10 of the laying carriage. The fibre web 3 leaves the laying gap 11 and is laid onto an output belt 15 arranged below the laying gap 11. The laying carriage is moved in a horizontal back and forth direction all the way across the width of the output belt 15, on which the fibre web 3 is placed and folded. The web 3 or nonwoven 18 (fig. 3) on the output belt 15 is then conveyed further in the working direction 14 (arrow direction) toward the functional unit 19 (see fig. 3) connected to the crosslapper 1.
The inlet belt 2, cover belt 7 and counter belt 13 can be embodied as endless belts, wherein the cover belt 7 and counter belt 13 can be designed to be air-permeable in order to conduct the entrained air away. The use of foraminous conveyor belts is a valuable embodiment. The use of a screen belt is a preferred embodiment here.
The input belt 2 and cover belt 7 have the same direction of travel for the web 3 and often the same speed. If the two conveyor belts 2,7 are driven at very slightly different speeds, the orientation of the neutral fibers of the fibers on the surface relative to the fiber strips will be affected to some extent.
As shown in fig. 3, the nonwoven fabric 18 produced by laying in the crosslapper 1 from the web 3 is transported to a downstream functional unit 19, before which an intake strip 16 is produced by means of the crosslapper 1. The inlet strip 16 is produced here by itself by the crosslapper 1 already implemented in relation to fig. 1,2 by placing the individual layers of the fibrous web 3 one on top of the other. For this purpose, the laying width of the nonwoven fabric 18, i.e. of the laid web 3, is reduced from a predetermined working width (shown in dashed lines in fig. 2) to a feed-in width. This may be the first section of the lead-in strip 16 shown in fig. 3 and thus the narrowest section of the lead-in strip 16. Its width corresponds to the lead-in width which is a fraction of the predetermined working width.
After placing an additional layer of web 3 on the output belt 15, the laying width can be increased again by the introduction width until the predetermined working width is reached. Whereby, as shown in fig. 2, a wedge-shaped or triangular shape of the nonwoven fabric 18 is created, which is substantially increased in width over its width. As shown in fig. 3, the wedge shape is generated by an increase in the layer-to-layer lay width. In this way, it is possible, for example, in a first step, to adjust the laying width of the fibre web 3 to an introduction width of 1000mm and then to widen it from layer to layer of the fibre web 3 by a width of, for example, 30mm to 500 mm. Thereby, for example, after seven layers, a predetermined working width of up to, for example, 4500mm is produced.
It is also possible in principle to produce the insertion strip 16 no longer in the shape of a wedge or triangle, but in the shape of a rectangle, i.e. with a constant insertion width layer by layer. By laying the intake strips 16 by means of the cross-lapping machine 1, significantly fewer rejects of nonwoven fabric 18 are produced. A complete working width of 4500mm can be achieved, for example, by a single jump from a 500mm wide inlet strip 16.
An alternative embodiment for transporting the nonwoven 18 from the crosslapper 1 to the downstream functional unit 19 is shown in fig. 4. The inlet strip 16 is produced here by itself by the cross-lapping machine 1 already implemented in relation to fig. 1, 2 by placing the individual double layers of the fibre web 3 one above the other. For this purpose, the laying width of the nonwoven fabric 18, i.e. of the laid web 3, is reduced from a predetermined working width (shown in dashed lines in fig. 2) to a feed-in width. This may be the first section of the lead-in strip 16 shown in fig. 4 and thus the narrowest section of the lead-in strip 16. Its width corresponds to the lead-in width which is a fraction of the predetermined working width.
After placing the other two layers of web 3 on the output belt 15, the laying width can be increased again by the introduction width until the predetermined working width is reached. Whereby, as shown in fig. 2, a wedge-shaped or triangular shape of the nonwoven fabric 18 is created, which is substantially increased in width over its width. As shown in fig. 4, the wedge shape is generated due to the increase of the laying width from two layers to two layers. In this way, for example, the laying width of the fiber web 3 can be adjusted in a first step to an insertion width of 1000mm and then be widened from two to two layers of the fiber web 3 in a step-by-step manner, for example, by a width of 30mm to 500 mm.
By means of the invention, it is thus possible to transport the fiber web 3 or the nonwoven fabric 18 produced by means of the crosslapper 1 to a functional unit 19, for example a needle loom, a water jet reinforcement device or a thermal bonding machine, which is connected to the crosslapper 1, wherein after the production of the intake strip 16, the intake strip is handed over to the downstream functional unit 19 and the intake width is increased to a predetermined working width after that. In this case, the line speed of the nonwoven fabric 18 produced in the crosslapper 1 is reduced from the working line speed to the intake line speed during the production of the intake strip 16. This is achieved by controlling the whole device.
The cross-lapping machine 1 may be assigned a controller 20 which is arranged such that it implements the method according to the invention and preferably operates a laying device for producing the run-in strip 16 such that the laying width is reduced by means of the cross-lapping machine from a predetermined working width to a run-in width. The control 20 of the crosslapper 1 is controlled by the higher-level control of the entire installation, since the upstream bulk fibre feeder, carding installation 17 or opening station must likewise be shut down at a certain speed and then be started up. The same applies to the downstream functional unit 19. The linear speed of the output belt 15 can likewise be regulated by means of the controller 20 so that during the production of the intake strip 16 the linear speed is reduced from an operating linear speed to an intake linear speed, wherein the linear speed increases again towards the operating linear speed with each further layer of the fibre web 3, preferably from the intake linear speed.
List of reference numerals
1. Cross lapping machine
2. Input tape
3. Fiber web
4. First steering roller
5. Second steering roller
6. Steering roller of upper carriage
7. Cover tape
8. Steering roller
9. Laying roller
10. Laying roller
11. Laying gap
12. Steering roller
13. Mixing belt
14 Working direction
15 Output tape
16 Lead-in strip
17 Carding equipment
18 Nonwoven fabric
19 Functional units
20 Controller
Claims (17)
1. Method for forming a nonwoven fabric (18) made of a multi-layer web (3) by means of a cross-lapping machine (1), whereby a plurality of layers made of the web (3) are stacked on top of each other in order to adjust a predetermined working width, wherein by means of the cross-lapping machine (1) the laying width of the laid web (3) is reduced from the predetermined working width to an introduction width in order to produce an introduction strip (16).
2. The method of claim 1, wherein the lead-in width corresponds to between 5% and 60% of the predetermined working width.
3. Method according to claim 1, characterized in that the predetermined working width is temporarily reduced to the lead-in width in order to produce the lead-in strip (16).
4. Method according to claim 2, characterized in that the predetermined working width is temporarily reduced to the lead-in width in order to produce the lead-in strip (16).
5. A method according to any one of claims 1 to 4, characterized in that the laying width increases with each further layer of the fibre web (3) by the introduction width until a predetermined working width is reached.
6. A method according to claim 5, wherein the lay-up width increases from one layer to the other by at least 30mm.
7. Method according to one of claims 1 to 4, characterized in that the laying width is increased stepwise with each two layers of web (3) or with a multiple of two layers of web (3) by the introduction width until a predetermined working width is reached.
8. The method of claim 7, wherein the lay width increases by at least 30mm per step.
9. Method according to one of claims 1 to 4, 6 and 8, characterized in that in the production of the intake strip (16) the linear speed of the nonwoven fabric (18) to be produced in the cross-lapper (1) is reduced from an operating linear speed to an intake linear speed, wherein the linear speed increases with each further layer of the web (3) from the intake linear speed to the operating linear speed.
10. A method according to claim 5, characterized in that in the production of the intake strip (16), the linear speed of the nonwoven fabric (18) to be produced in the cross-lapper (1) is reduced from a working linear speed to an intake linear speed, wherein the linear speed increases from the intake linear speed to the working linear speed with each further layer of the web (3).
11. Method according to claim 7, characterized in that in the production of the intake strip (16), the linear speed of the nonwoven fabric (18) to be produced in the crosslapper (1) is reduced from a working linear speed to an intake linear speed, wherein the linear speed increases from the intake linear speed to the working linear speed with each further layer of the web (3).
12. Cross-lapping machine (1) for forming a nonwoven fabric (18) made of a multilayer web (3), wherein the cross-lapping machine (1) is arranged such that it implements the method according to one of the preceding claims.
13. Cross-lapping machine (1) according to claim 12, characterized in that the cross-lapping machine (1) comprises at least one belt conveying the fibre web (3) from an input area of the cross-lapping machine (1) to a laying device, wherein the laying device places the fibre web (3) on an output belt (15) and the laying device is movable back and forth along a predetermined working width for placing one layer of fibre web (3) on another layer, wherein a controller (20) is assigned to the cross-lapping machine (1), which controller is arranged such that it implements the method according to one of claims 1 to 11 and operates the laying device for producing the lead-in strip (16) such that the laying width is reduced by means of the cross-lapping machine (1) from the predetermined working width to the lead-in width.
14. Cross lapping machine (1) according to claim 13, characterized in that the laying device is configured as a laying carriage or a laying arm.
15. Cross-lapping machine (1) according to claim 13, characterized in that the linear speed of the output belt (15) is adjustable by means of the controller (20) so that during production of the incoming strip (16) the linear speed is reduced from an operating linear speed to an incoming linear speed, wherein the linear speed increases again towards the operating linear speed by the incoming linear speed with each further layer of fibrous web (3).
16. Cross-lapping machine (1) according to claim 13, characterized in that the controller (20) of the cross-lapping machine (1) is controlled by a controller of a device for producing nonwoven in order to vary the working speed.
17. The use of a cross-lapping machine (1), by means of which cross-lapping machine (1) a nonwoven fabric (18) made of a multi-layer web (3) can be formed, by reducing the laying width of the laid web (3) from a predetermined working width to an introduction width by means of the cross-lapping machine (1), in order to produce an introduction strip (16).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022116216.8A DE102022116216A1 (en) | 2022-06-29 | 2022-06-29 | Method for forming a nonwoven from several layers of fiber web using a cross-layer, cross-layer and the use thereof |
| DE102022116216.8 | 2022-06-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116815421A CN116815421A (en) | 2023-09-29 |
| CN116815421B true CN116815421B (en) | 2025-09-05 |
Family
ID=86942055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310761183.8A Active CN116815421B (en) | 2022-06-29 | 2023-06-26 | Method for forming a nonwoven fabric made of a multilayer fiber web by means of a cross-lapper, a cross-lapper and its use |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4299807B1 (en) |
| CN (1) | CN116815421B (en) |
| DE (1) | DE102022116216A1 (en) |
| PL (1) | PL4299807T3 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107822A (en) * | 1977-06-08 | 1978-08-22 | Roger Alan Brown | Process for making a batt of modified basis weight profile and lengthwise uniformity |
| CN104695136A (en) * | 2013-12-04 | 2015-06-10 | 特吕茨施勒有限及两合公司 | Crosslapper |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1854910B1 (en) | 2006-05-09 | 2009-09-30 | Oskar Dilo Maschinenfabrik KG | Pendulum cross-lapper |
| FR2910496B1 (en) * | 2006-12-22 | 2009-03-13 | Asselin Thibeau Soc Par Action | METHOD OF ADJUSTING THE LOCAL CHARACTERISTICS OF A NON-WOVEN, AND PRODUCTION PLANT THEREFOR. |
| EP2014813B1 (en) * | 2007-07-09 | 2010-12-22 | Oskar Dilo Maschinenfabrik KG | Method of manufacturing a consolidated nonwoven fabric |
| FI122889B (en) * | 2010-12-31 | 2012-08-31 | Upm Kymmene Corp | Method and apparatus for producing nanocellulose |
| FR2996565B1 (en) * | 2012-10-04 | 2014-11-28 | Saint Gobain Isover | INSTALLATION AND METHOD FOR MANUFACTURING THERMAL AND / OR PHONIC INSULATION PRODUCT |
| CN107034587A (en) * | 2017-05-15 | 2017-08-11 | 常州维盛无纺科技有限公司 | The two-way combing device for layering and multilayer laying net for shaping system of ultralow base weight non-woven fabrics |
| DE102017116059A1 (en) * | 2017-07-17 | 2019-01-17 | TRüTZSCHLER GMBH & CO. KG | lapper |
| US20190368089A1 (en) * | 2018-05-29 | 2019-12-05 | Nike, Inc. | Method for nonwoven textiles with variable zonal properties |
| EP3617353B1 (en) * | 2018-08-29 | 2024-10-09 | Oskar Dilo Maschinenfabrik KG | A lap-forming device with a delivery transport belt |
-
2022
- 2022-06-29 DE DE102022116216.8A patent/DE102022116216A1/en active Pending
-
2023
- 2023-06-22 EP EP23180828.8A patent/EP4299807B1/en active Active
- 2023-06-22 PL PL23180828.8T patent/PL4299807T3/en unknown
- 2023-06-26 CN CN202310761183.8A patent/CN116815421B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4107822A (en) * | 1977-06-08 | 1978-08-22 | Roger Alan Brown | Process for making a batt of modified basis weight profile and lengthwise uniformity |
| CN104695136A (en) * | 2013-12-04 | 2015-06-10 | 特吕茨施勒有限及两合公司 | Crosslapper |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4299807A1 (en) | 2024-01-03 |
| PL4299807T3 (en) | 2025-03-24 |
| CN116815421A (en) | 2023-09-29 |
| EP4299807B1 (en) | 2024-11-27 |
| DE102022116216A1 (en) | 2024-01-04 |
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