WO2004088026A1 - Procede et dispositif pour produire un non-tisse composite - Google Patents

Procede et dispositif pour produire un non-tisse composite Download PDF

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Publication number
WO2004088026A1
WO2004088026A1 PCT/EP2004/003175 EP2004003175W WO2004088026A1 WO 2004088026 A1 WO2004088026 A1 WO 2004088026A1 EP 2004003175 W EP2004003175 W EP 2004003175W WO 2004088026 A1 WO2004088026 A1 WO 2004088026A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber fleece
fibers
fleece
fine
nonwoven
Prior art date
Application number
PCT/EP2004/003175
Other languages
German (de)
English (en)
Inventor
Axel Nickel
Erwin Glawion
Original Assignee
Rieter Automatik Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rieter Automatik Gmbh filed Critical Rieter Automatik Gmbh
Publication of WO2004088026A1 publication Critical patent/WO2004088026A1/fr

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Classifications

    • 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
    • D04H13/00—Other non-woven fabrics
    • 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
    • D04H1/48—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 in combination with at least one other method of consolidation
    • D04H1/485—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 in combination with at least one other method of consolidation in combination with weld-bonding
    • 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
    • D04H1/498—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 entanglement of layered webs

Definitions

  • the invention relates to a method and a device for producing a composite nonwoven whose one component consists of a voluminous coarse fiber fleece consisting of endless fibers of more than ⁇ dtex, and the other component consists of a fine fiber fleece with endless fibers which are substantially thinner than the coarse fiber fleece.
  • Such a composite nonwoven material is described in DE 41 14 839 C2, which consists of coarse filaments with respect to one component and fine microfibers with its other component. These two nonwoven materials are joined together in layers, the cohesion being generated by the microfibers, which are formed by components of an adhesive, being connected to the other nonwoven layer by heating.
  • this is done by placing the fine fiber fleece consisting of low melting fibers on the coarse fiber fleece consisting of high-melting fibers and then directing a large number of fluid jets onto the fine fiber fleece at such high pressure that the fibers of the fine fiber fleece are forced between the fibers of the coarse fiber fleece and become mix with the latter to form the composite fleece, which after drying a heating stage is subjected to further heating at temperatures such that the fibers of the fine fiber fleece are melted at least on the surface and stick to the coarse fiber fleece after the further heating has ended.
  • Water jets optionally tempered, and also superheated steam jets and air jets are primarily considered as fluid jets.
  • a particularly high dimensional stability is obtained even with a coarse fiber nonwoven fabric of more than 6 dtex, because one type of connection, namely the needling by means of Fluid jets, even in the case of the relatively thick fibers of more than 6 dtex, the stiffness of which largely counteracts a reduction in volume which occurs when needling, the other type of connection, namely the internal gluing, stabilizing the coarse fiber fleece, the combination of the two processes resulting in a high degree of mutuality Supporting the effect of both processes results in the result that the composite fleece produced according to the invention is a particularly dimensionally stable material.
  • the method can also be modified in such a way that the further heating is directed at the composite nonwoven with such temperature and duration that the fibers of the coarse fiber nonwoven are glued together when the fibers of the fine fiber nonwoven melt. This creates an effect on the fibers of the coarse fiber fleece in addition to the needling with fluid jets that previously took place, which results in a particular strength of this material.
  • the pressure and duration of the fluid jets directed onto the fine fiber fleece are advantageously set such that the mixing of the fibers of the fine fiber fleece with the fibers of the coarse fiber fleece decreases continuously with increasing depth in the coarse fiber fleece. This results in a composite fleece with a gentle strength transition from the outside to the inside of the composite fleece, the gradient of the mixing depending on the pressure and duration of the fluid jets being able to be set in each case, for example to a linear or exponential gradient.
  • the composite nonwoven can also be used to produce a material with a specially and attractively designed surface, for which purpose at least one further layer in the form of a further nonwoven, film or decorative material is placed on the composite nonwoven, which is bonded to the composite nonwoven in that the layers are melted by melting the Fine fiber fleece are glued together.
  • a plurality of composite nonwovens can be combined after each treatment by the fluid jets and exposed together to the heating stage, which leads to adhesion from layer to layer and ultimately results in a correspondingly thick material.
  • An apparatus for carrying out the above-described method is expediently designed such that a nozzle arrangement in each case deposits the fibers for the coarse fiber fleece and the fine fiber fleece on a conveyor belt which, with the two fleeces, reaches a stage with pressurized fluid jets, to which a heating stage for drying, melting and cooling the fibers of the fine fiber fleece.
  • the pressurized fluid jets can be guided in such a way that they perform a reciprocating transverse movement with respect to the conveyor belt, which due to the advance of the conveyor belt results in a meandering action on the fleece in question, the pressure of the fluid jets being adjusted so that the fine fibers are severed by the fluid jets to form small rhombic surface units.
  • Figure 1 shows a system for performing the method according to the invention with directly connected devices for generating the
  • Figures la, b and c structures of the structural pattern of the given nonwoven fabric generated at the points designated in this regard in Figure 1;
  • Figure 2 shows a plant part for the production of coarse fiber fleece
  • FIG. 3 shows the production of the composite fleece with a system that is fed with the result of the system according to FIG. 2;
  • FIG. 4 shows a system for producing a coarse fiber fleece coated on both sides with a fine fiber fleece
  • FIG. 5 shows a system for producing a composite nonwoven fabric that comes from composite nonwoven fabrics that are unwound from six coils and that are combined to form an overall composite nonwoven fabric
  • FIG. 6 shows a fluid jet pattern drawn by the fluid jets on a coarse fiber fleece which is moved back and forth transversely to the conveying direction;
  • FIG. 7 shows an enlarged illustration of the pattern according to FIG. 6.
  • FIG. 1 shows a plant for carrying out the method according to the invention, in which two devices for producing a coarse fiber fleece and a fine fiber fleece are combined, namely the plant 1 for producing a coarse fiber fleece, shown in increased broken lines, with a granule hopper 2, an extruder 3 and a nozzle arrangement 4, from which a number of fibers 5 emerge, which form the coarse fiber fleece 7 on the advancing conveyor belt 6.
  • the representation of the above-mentioned components 2, 3 and 4 is only a symbolic representation, since the components in question are known designs.
  • the system also contains the device 8 for producing a fine fiber fleece 9, shown in fine dashed lines, which, similar to the device 1, contains a granulate hopper 10, an extruder 11 and a nozzle arrangement 12.
  • the fibers 13 emerge from the nozzle arrangement 12 and form the fine fiber fleece on the conveyor belt 6, which is deposited on the coarse fiber fleece 7.
  • FIG. 1b shows the unfinished composite nonwoven transported at the marked point in FIG. 1 after the fibers 13 are deposited on the coarse fiber nonwoven 7, which together with the coarse fiber nonwoven 7 form the composite nonwoven.
  • the two superposed nonwovens are exposed to the water jet nozzles 14, 15 and 16, which direct their fluid jets onto the fine fiber nonwoven fabric 9 under high pressure (for example 200 bar). If necessary, it is possible that the fibers of the fine fiber fleece 9 are first cut into short fibers in a pattern according to FIG.
  • the thickness of the fluid jets corresponds approximately to the thickness of the fibers of the coarse fiber fleece.
  • the structure of this composite fleece is shown in FIG. 1c (see corresponding marking in FIG. 1), from which it can be seen that the thin fibers of the fine fiber fleece have mixed to a considerable extent between the fibers of the coarse fiber fleece.
  • the fibers of the coarse fiber fleece can be those which have a fiber fineness of about 6 to 30 dtex (g per 10000 m length). About 0.1 to 0.3 dtex apply to the fine fiber fleece. These values correspond approximately to a diameter of 25 - 60 micrometers for coarse fiber fleece and 3 - 6 micrometers for fine fiber fleece.
  • FIGS. 2 and 3 A modification of the design of a plant for producing the composite fleece according to the invention is shown in FIGS. 2 and 3. Starting from the illustration in FIG. 1 relating to the device 1, the part of the installation shown in FIG.
  • the conveyor belt 6a contains only the production of the coarse fiber fleece 7, which after being formed on the conveyor belt 6a is first passed under the water jet nozzle 19 in order to be pre-consolidated there.
  • the coarse fiber fleece 7 is then fed to the dryer 20, after which it is then wound up on the roll 21.
  • FIG. 3 goes back to the illustration of the device part 8 from FIG. 1.
  • the device 8 is fed by the coarse fiber fleece 7 wound on the roll 21, onto which the fibers 13 forming the fine fiber fleece 9 are placed here, similar to the system according to FIG.
  • the structure shown in FIG. 1b thus arises at the point in FIG. 1b according to FIG.
  • the nonwovens placed one on top of the other then come under the influence of the water jet nozzles 14, 15 and 16, which, as described in connection with FIG. 1, press the fibers of the fine fiber nonwoven 9 into the fibers of the coarse fiber nonwoven 7, where they coexist with the fibers of the coarse fiber nonwoven 7 mix.
  • the composite nonwoven thus initially produced as a prefabricated product then passes into the heating stage 17, in which the composite nonwoven is dried and then the fibers of the fine fiber nonwoven 9 are melted, whereby the composite nonwoven is finally produced and after cooling in the cooling section 23 can be wound onto the winding 18.
  • FIG. 4 shows a system which contains the assemblies of the system according to FIG. 3 and which, however, is not fed with a coarse fiber fleece (winding 21 in FIG. 3), but rather is fed with a composite fleece 29 which, as in FIG shown, is wound on the winding 18 there.
  • the winding 18 is turned over in relation to its position in FIG. 3, so that the outermost layer with respect to the individual layers on the winding 18 is coated with the extruded fibers 27 for a fine-fiber fleece 28.
  • the composite fleece which here carries a fine fiber fleece on both sides, is transported further through the further stages of the plant 4, which correspond to those according to FIG. 3, and finally wound onto the winding 26 as a composite fleece coated on both sides with a fine fiber fleece ,
  • the method according to the invention can also be used to produce a composite nonwoven which consists of several layers of individual composite nonwovens, consisting of coarse fiber nonwoven and fine fiber nonwoven.
  • FIG. 5 shows six coils 21, each of which contains the composite fleece produced by the method according to the invention, preferably with the fine-fiber fleece not yet melted.
  • These composite nonwovens are supplied in a known manner via deflection rollers to the heating stage 22, where, if necessary, the nonwovens supplied to them are also dried, provided that this drying has not already taken place beforehand.
  • the fine fiber fleece is heated in such a way that its fibers develop the required adhesive force and can bind to neighboring fibers. The consequence of this is that the individual composite nonwovens which are pulled off from the six windings 21 lie against one another within the heating stage 22, in order then to be glued together in the heating stage.
  • the heating stage 22 then provides a particularly thick, stiff nonwoven.
  • the individual composite nonwovens can be subjected to a continuous or cyclical shaping and are glued to one another in this way, thus giving the composite nonwoven fabric emitted by the heating stage 22 a shape that is shaped by the heating stage 22 equivalent. It can e.g. to be a piece of a circular arc.
  • heating stages 17 and 22 shown in FIGS. 1, 3 and 4 can also be designed in the form of presses.
  • FIG. 6 shows the part of the installation according to FIG. 1 insofar as it comprises the area with the water jet nozzles 14 and 15 and water outlets 30 and 31 arranged below it.
  • the coarse fiber fleece 7 is moved back and forth during transport under the water jet nozzles 14 and 15, which can be brought about by a corresponding movement of the conveyor belt 6.
  • This back and forth movement of the coarse fiber fleece 9 takes place under the water jet nozzles 14 and 15, with a stroke of only a few millimeters, so that the fluid jets of the water jet nozzles 14 and 15 each act on the fine fiber fleece 9 via a meandering track, due to the offset the water jet nozzles 14 and 15 touch these tracks, which, as shown in FIG. 6, leads to a diamond pattern according to which the fibers of the fine-fiber fleece 9 are cut at the respective crossing points of the tracks mentioned.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

L'invention concerne un procédé servant à produire un non-tissé composite dont un constituant est un non-tissé à fibres grossières volumineux, constitué de fibres continues ou finies de plus de 6 dtex, et dont l'autre constituant est un non-tissé à fibres fines comprenant des fibres continues ou finies significativement plus minces que celles du non-tissé à fibres grossières. Selon l'invention, on pose sur un non-tissé à fibres grossières, constitué de fibres à point de fusion élevé, un non-tissé à fibres fines constitué de fibres à point de fusion bas, puis on dirige une multitude de jets de fluide sur le non-tissé à fibres fines à une pression suffisamment élevée pour que les fibres du non-tissé à fibres fines soient pressées entre les fibres du non-tissé à fibres grossières et se mélangent à ces dernières pour former le non-tissé composite. Après séchage du non-tissé composite dans un étage de chauffage, on poursuit le chauffage en soumettant le non-tissé composite à des températures telles que les fibres du non-tissé à fibres fines fondent au moins superficiellement et se collent au non-tissé à fibres grossières une fois le chauffage supplémentaire achevé.
PCT/EP2004/003175 2003-03-31 2004-03-25 Procede et dispositif pour produire un non-tisse composite WO2004088026A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003114552 DE10314552A1 (de) 2003-03-31 2003-03-31 Verfahren und Vorrichtung zur Herstellung eines Verbundvlieses
DE10314552.4 2003-03-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106715775A (zh) * 2014-05-13 2017-05-24 优品无纺布公司 图案化非织造物以及使用热风干燥工艺制备该图案化非织造物的方法
CN108221177A (zh) * 2018-01-30 2018-06-29 杭州诚品实业有限公司 一种三层复合非织造材料及其生产设备、生产方法和应用

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015105845A1 (de) * 2015-04-16 2016-10-20 J.H. Ziegler Gmbh Textilverbundmaterial

Citations (7)

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Publication number Priority date Publication date Assignee Title
DE2356720A1 (de) * 1972-09-06 1975-05-22 Kimberly Clark Co Nicht-gewebtes material
EP0403840A1 (fr) * 1989-06-20 1990-12-27 Corovin GmbH Matériau non tissé
EP0418493A1 (fr) * 1989-07-28 1991-03-27 Fiberweb North America, Inc. Une étoffe non-tissée composée combinée par hydroenchevêtrement et un procédé de sa fabrication
DE4114839A1 (de) * 1991-05-07 1992-11-12 Corovin Gmbh Mikrofaservlies sowie mikrofasern enthaltendes verbundvliesmaterial
EP0841156A1 (fr) * 1995-07-10 1998-05-13 Japan Absorbent Technology Institute Feuille composite poreuse et son procede de fabrication
US20010036788A1 (en) * 1998-01-30 2001-11-01 Sandoe Michael D. Vehicle headliner and laminate therefor
WO2003074267A1 (fr) * 2002-03-04 2003-09-12 Faurecia Automotive Industrie Insonorisant de type masse-ressort

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Publication number Priority date Publication date Assignee Title
JPH0784696B2 (ja) * 1983-05-20 1995-09-13 ジヨンソン・アンド・ジヨンソン 不織布製造方法
NZ212999A (en) * 1984-08-16 1987-05-29 Chicopee Entangled non woven fabric; fusible fibres at one surface thermobonded to base fibres
US4950531A (en) * 1988-03-18 1990-08-21 Kimberly-Clark Corporation Nonwoven hydraulically entangled non-elastic web and method of formation thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2356720A1 (de) * 1972-09-06 1975-05-22 Kimberly Clark Co Nicht-gewebtes material
EP0403840A1 (fr) * 1989-06-20 1990-12-27 Corovin GmbH Matériau non tissé
EP0418493A1 (fr) * 1989-07-28 1991-03-27 Fiberweb North America, Inc. Une étoffe non-tissée composée combinée par hydroenchevêtrement et un procédé de sa fabrication
DE4114839A1 (de) * 1991-05-07 1992-11-12 Corovin Gmbh Mikrofaservlies sowie mikrofasern enthaltendes verbundvliesmaterial
EP0841156A1 (fr) * 1995-07-10 1998-05-13 Japan Absorbent Technology Institute Feuille composite poreuse et son procede de fabrication
US20010036788A1 (en) * 1998-01-30 2001-11-01 Sandoe Michael D. Vehicle headliner and laminate therefor
WO2003074267A1 (fr) * 2002-03-04 2003-09-12 Faurecia Automotive Industrie Insonorisant de type masse-ressort

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106715775A (zh) * 2014-05-13 2017-05-24 优品无纺布公司 图案化非织造物以及使用热风干燥工艺制备该图案化非织造物的方法
CN108221177A (zh) * 2018-01-30 2018-06-29 杭州诚品实业有限公司 一种三层复合非织造材料及其生产设备、生产方法和应用

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