EP0900295B1 - Procédé pour fabriquer un non-tissé par aiguilletage hydrodynamique - Google Patents

Procédé pour fabriquer un non-tissé par aiguilletage hydrodynamique Download PDF

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Publication number
EP0900295B1
EP0900295B1 EP96927024A EP96927024A EP0900295B1 EP 0900295 B1 EP0900295 B1 EP 0900295B1 EP 96927024 A EP96927024 A EP 96927024A EP 96927024 A EP96927024 A EP 96927024A EP 0900295 B1 EP0900295 B1 EP 0900295B1
Authority
EP
European Patent Office
Prior art keywords
fleece
water
needled
needling
drying
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
EP96927024A
Other languages
German (de)
English (en)
Other versions
EP0900295A1 (fr
Inventor
Gerold Fleissner
Alfred Watzl
Ullrich MÜNSTERMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Truetzschler Nonwovens GmbH
Original Assignee
Fleissner 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 Fleissner GmbH filed Critical Fleissner GmbH
Publication of EP0900295A1 publication Critical patent/EP0900295A1/fr
Application granted granted Critical
Publication of EP0900295B1 publication Critical patent/EP0900295B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets
    • 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
    • D04H1/492—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 by fluid jet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
    • Y10T442/60—Nonwoven fabric [i.e., nonwoven strand or fiber material]
    • Y10T442/689—Hydroentangled nonwoven fabric

Definitions

  • a new water soluble PVA fiber for nonwovens application "describes a special chemical fiber made from a hydrophilic synthetic polymer is made. It has other important properties continue to have the special ability to be residue-free in water at certain temperatures dissolve.
  • the fiber consists of a polyvinyl alcohol and is both can be processed into a surface good using weaving technology or nonwovens technology which any item of clothing or the like can be produced. These area goods out
  • the PVA fiber is used especially for the hygiene product range because after use z. B. in the hospital during operations, an easy and fast Disposal of goods contaminated with blood and the like by dissolving in hot Water is possible.
  • This composite is then wetted, if necessary also by means of the hydrodynamic Water needling wet, solidified and shaped and then in one Two stage process on heating cylinders with continuously increasing temperatures of 40 ° C to 100 ° C dried.
  • the invention has for its object to develop a method with which as usual, nonwovens made from these PVA fibers continuously with higher Speed than can be solidified in the mechanical process and thereby a product can be manufactured that has ongoing qualities.
  • the invention Based on a process for producing an endless nonwoven product with hydrodynamic needling of a fleece laying machine such as a card together with a nonwoven web made of at least partially PVA Fibers and the subsequent needling of the nonwoven surface Water jets to solidify the nonwoven product and then one subsequent drying of the needled fleece, the invention now has found that with some special parameters it is still possible to use a Nonwoven product made from this fiber using only the hydrodynamic method solidify and dry quickly without damage.
  • the needled fleece is in front of the Partial dewatering mechanically, e.g. B. squeeze or suction, and the drying of the fleece with a fleece ventilation and high Flow rate of more than 2 to 4 m / sec at a temperature up to 120 ° C.
  • the energy of the jets of the following nozzle bars becoming ever higher, e.g. B. from 50 bar to 120 bar on the first side and from 120 bar to 160 bar on the second side.
  • the last needling on each side should be done at about 80 bar and carried out with a larger number of water jets distributed over the width of the nonwoven in order to achieve a uniformly smooth surface.
  • a nonwoven weight of 40 to 150 g / m 2 can be consolidated.
  • the transport speed of the nonwoven during consolidation is 70 m / min and more.
  • the fleece treatment speed is only dependent on the possible fleece speed.
  • the production speed is adapted to the respective fleece weights, in any case it is lower with higher weights.
  • the drying parameters are essential. First of all, it is needled Mechanically dewater fleece immediately before drying to achieve a To achieve moisture that is not higher than 100%. Then the fleece is to be dried with flowing drying air that is not heated higher than 120 ° C. It is particularly advantageous if the drying with the ventilation on one rotating, placed inside under suction and takes place the Air speed in the fleece increased by a high fan speed up to 4 m / sec becomes. Various tests have shown that this method is harmful the PVA fiber does not occur. Both during drying and during the subsequent hot final treatment, there were no discernible disadvantages, such as otherwise usual brown spots. Basically, drying is also possible with a Belt dryer, where aeration can also be created, or with an IR dryer or similar possible.
  • the fleece still with a water repellent impregnation like Foam or liquid impregnation should be provided, so it is appropriate to do this after a first drying to 30% moisture, unless the Impregnation is carried out wet on wet. Then after the first drying, the second should Drying level just like the first at a temperature up to 120 ° C and the fleece can be fully dried. It is also possible that Impregnation only after drying e.g. B. up to 5% moisture. After the needled fleece has dried completely, it is not a problem if that Fleece is still crosslinked at temperatures up to 210 ° C.
  • Pulp or paper to provide the water repellent property of the nonwoven to increase. It can be a foam impregnation, a liquid impregnation, with advantage but can also in the method according to the invention such a layer in Released in pulp form or as tissue paper and then with the needled fleece be connected by it for simultaneous needling on the back with the The fleece is placed on the fleece before the second needling and then at the next starting needling is connected to the fleece.

Landscapes

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

Abstract

La fabrication d'un non-tissé à partir d'une fibre d'alcool polyvinylique (PVA) est connue. Le principal avantage de cette fibre PVA est sa solubilité dans l'eau. Le non-tissé subit donc un aiguilletage mécanique en vue de sa consolidation. L'invention concerne un procédé faisant également appel à un aiguilletage hydrodynamique. L'invention est également caractérisée par des paramètres particuliers relatifs au traitement ultérieur lors de l'aiguilletage dans l'eau et lors du séchage qui s'ensuit.

Claims (10)

  1. Procédé de fabrication d'un voile sans fin avec aiguilletage par eau d'une bande de voile appliquée par une nappeuse comme une cardeuse, par exemple, ou avec un applicateur croisé. Cette bande de voile se compose au moins partiellement de fibres d'alcool polyvinylique (APV). Ce procédé prévoit également l'injection de la surface du voile avec des jets d'eau d'aiguilletage destinés à consolider le voile ainsi que le séchage du voile aiguilleté, et est caractérisé en ce que, avant le séchage, le voile aiguilleté est partiellement asseché mécaniquement, par écrasement ou aspiration, par exemple, et en ce que le voile est séché par une aération de bout en bout et avec une vitesse de séchage de plus de 2 à 4 m / sec., pour une température maximale de 120°C.
  2. Procédé selon la revendication 1 et caractérisé en ce que le voile déjà préseché et aiguilleté par eau fait l'objet d'un deuxième séchage avec aération de bout en bout et une température maximale de 120°C.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le voile sec est chauffé rapidement, en 20 - 30 sec. par exemple, jusqu'à atteindre une température de quelque 210°C permettant d'atteindre la réaction complète (curing).
  4. Procédé selon l'une ou l'autre des revendications 1 à 3, caractérisé en ce que le voile aiguilleté par eau est imprégné avant ou après un séchage partiel jusqu'à un taux d'humidité d'environ 30 % ou après le séchage définitif avec un agent de finissage rendant la fibre hydrofuge.
  5. Procédé selon l'un ou l'autre des revendications 1 à 4, et caractérisé en ce que le voile constitué de fibres d'alcool polyvinylique est au moins une fois aiguilleté par eau, sur les deux côtés consécutivement.
  6. Procédé selon l'une ou l'autre des revendications 1 à 5, et caractérisé en ce que le voile composé de fibres d'alcool polyvinylique est, lors de l'aiguilletage par eau sur une bande portant le voile, comme une bande perforée ou un système d'entoilage à tambour, plié avec une surface libre de 18 à 25 % et / ou 80 à 120 mesh(s) (torsions / pouce) et avec une ou plusieurs armure(s).
  7. Procédé selon l'une ou l'autre des revendications 1 à 6, caractérisé en ce que l'aiguilletage du voile constitué de fibres d'alcool polyvinylique est exécuté avec plusieurs, et si possible quatre, barres d'injection disposées l'une derrière l'autre et avec une pression hydraulique progressant lentement, de 50, 80 puis 120 bars, par exemple.
  8. Procédé selon la revendication 5 ou 7, et caractérisé en ce que le deuxième aiguilletage de l'autre côté du voile composé de fibres d'APV est executé avec plusieurs, et si possible quatre, barres d'injection disposées l'une derrière l'autre et avec une pression hydraulique progressant lentement, de 120, 140 puis 160 bars par exemple.
  9. Procédé selon la revendication 7 ou 8, caractérisé en ce que la dernière barre d'injection présente une pression hydraulique réduite de 80 bars par exemple, mais une densité de trous supérieure à celle des barres d'injection précédentes.
  10. Procédé selon l'une ou l'autre des revendications 1 à 9, caractérisé en ce que la première ou la deuxième face du voile en fibres d'alcool polyvinylique à aiguilleter est, avant le deuxième aiguilletage par eau, recouverte de pulpe ou de papier d'un poids d'environ 15 g / m2 et caractérisé également en ce que ce deuxième aiguilletage permet de lier cette enduction avec le voile déjà aiguilleté d'un seul côté.
EP96927024A 1996-05-22 1996-07-17 Procédé pour fabriquer un non-tissé par aiguilletage hydrodynamique Expired - Lifetime EP0900295B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19620503A DE19620503A1 (de) 1996-05-22 1996-05-22 Verfahren zur Herstellung eines Vlieses durch hydromechanisches Vernadeln und Produkt nach diesem Herstellungsverfahren
DE19620503 1996-05-22
PCT/EP1996/003130 WO1997044512A1 (fr) 1996-05-22 1996-07-17 Procede pour fabriquer un non-tisse par aiguilletage hydrodynamique et produit ainsi obtenu

Publications (2)

Publication Number Publication Date
EP0900295A1 EP0900295A1 (fr) 1999-03-10
EP0900295B1 true EP0900295B1 (fr) 2000-05-31

Family

ID=7794943

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927024A Expired - Lifetime EP0900295B1 (fr) 1996-05-22 1996-07-17 Procédé pour fabriquer un non-tissé par aiguilletage hydrodynamique

Country Status (5)

Country Link
US (1) US6112385A (fr)
EP (1) EP0900295B1 (fr)
CN (1) CN1119446C (fr)
DE (2) DE19620503A1 (fr)
WO (1) WO1997044512A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1169505A1 (fr) * 1999-03-26 2002-01-09 Isolyser Company, Inc. Non tisse lace par filage de poly(alcool vinylique)
US6420284B1 (en) 1999-03-26 2002-07-16 Isolyser Company, Inc. Poly (vinyl alcohol) wipes
US6319455B1 (en) 1999-08-13 2001-11-20 First Quality Nonwovens, Inc. Nonwoven fabric with high CD elongation and method of making same
MXPA02004206A (es) * 1999-10-28 2002-10-17 Kimberly Clark Co Materiales no tejidos dispersables.
US6576575B2 (en) 2000-05-15 2003-06-10 Kimberly-Clark Worldwide, Inc. Dispersible adherent article
EP1424425A1 (fr) * 2002-11-27 2004-06-02 Polyfelt Gesellschaft m.b.H. Procédé de fabrication de géotextiles à partir de filaments spunbond
ATE474949T1 (de) * 2003-03-10 2010-08-15 Kuraray Co Polyvinylalkoholfasern und diese enthaltende vliesstoffe
FR2856952B1 (fr) * 2003-07-01 2006-09-01 Rieter Perfojet Nontisse biodegradable
BRPI0412663A (pt) * 2003-07-16 2006-09-26 Fleissner Gmbh pano de limpeza totalmente sintético, processo e equipamento para fabricação do mesmo
DE10345086A1 (de) * 2003-07-16 2005-02-03 Fleissner Gmbh Vollsynthetisches Wischtuch, Verfahren und Anlage zur Herstellung des Wischtuchs
US7328463B2 (en) * 2003-09-08 2008-02-12 Microtek Medical Holdings, Inc. Water-soluble articles and methods of making and using the same
US7378360B2 (en) 2003-12-17 2008-05-27 Kimberly-Clark Worldwide, Inc. Water dispersible, pre-saturated wiping products
US20090069825A1 (en) * 2005-03-22 2009-03-12 Agency For Science, Technology And Research Scaffold and Method of Forming Scaffold by Entangling Fibres
EP1931482A2 (fr) * 2005-09-12 2008-06-18 Sellars Absorbent Materials, Inc. Procédé et dispositif pour fabriquer une serviette, un mouchoir et des raclettes sur un cardage à l'air ou une ligne de flux d'air utilisant des liaisons d'hydrogène
EP2128320B1 (fr) * 2008-05-29 2013-09-25 Reifenhäuser GmbH & Co. KG Maschinenfabrik Procédé et dispositif destinés à la fabrication de tissus non tissés en filaments
KR101001260B1 (ko) 2009-10-14 2010-12-14 (주)태봉 친환경 한지부직포의 제조방법
DE202019100745U1 (de) 2019-02-08 2020-05-11 Autefa Solutions Germany Gmbh Trocknungseinrichtung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3930086A (en) * 1971-01-05 1975-12-30 Johnson & Johnson Apertured nonwoven fabrics
US4970104A (en) * 1988-03-18 1990-11-13 Kimberly-Clark Corporation Nonwoven material subjected to hydraulic jet treatment in spots
US5650219A (en) * 1991-04-10 1997-07-22 Isolyser Co. Inc. Method of disposal of hot water soluble garments and like fabrics
US5885907A (en) * 1993-04-29 1999-03-23 Isolyser Company, Inc. Method of disposal of hot water soluble garments and like fabrics
US5500281A (en) * 1994-02-23 1996-03-19 International Paper Company Absorbent, flushable, bio-degradable, medically-safe nonwoven fabric with PVA binding fibers, and process for making the same

Also Published As

Publication number Publication date
CN1191582A (zh) 1998-08-26
US6112385A (en) 2000-09-05
DE59605371D1 (de) 2000-07-06
WO1997044512A1 (fr) 1997-11-27
EP0900295A1 (fr) 1999-03-10
CN1119446C (zh) 2003-08-27
DE19620503A1 (de) 1997-11-27

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