EP0900295B1 - Process for manufacturing a non-woven by hydrodynamic needling - Google Patents
Process for manufacturing a non-woven by hydrodynamic needling Download PDFInfo
- 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
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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
- D04H18/00—Needling machines
- D04H18/04—Needling machines with water jets
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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
- D04H1/492—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
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- 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.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
In der Zeitschrift ITB Nonwovens, Industrial Textiles 4/95, Seite 20 - 25 "Degradables or the recycling economy for disposables" oder in der Zeitschrift Chemical Fibers International Vol. 46, April 96, Seite 102 "A new water soluble PVA fiber for nonwovens application" ist eine besondere Chemiefaser beschrieben, die aus einem hydrophilen synthetischen Polymer hergestellt ist. Sie hat neben anderen wichtigen Eigenschaften weiterhin die besondere Fähigkeit, sich bei bestimmten Temperaturen in Wasser rückstandsfrei aufzulösen. Die Faser besteht aus einem Polyvinyl Alkohol und ist sowohl über die Webtechnik oder die Nonwoventechnik zu einem Flächengut verarbeitbar, aus dem jedes beliebige Kleidungsstück od. dgl. herstellbar ist. Diese Flächengüter aus der PVA-Faser werden aber besonders für die Hygieneproduktpalette verwendet, weil nach deren Gebrauch z. B. im Krankenhaus bei Operationen, eine leichte und schnelle Entsorgung der mit Blut und dgl. verschmutzten Güter durch die Auflösung in heißem Wasser möglich ist.In the magazine ITB Nonwovens, Industrial Textiles 4/95, pages 20-25 "Degradables or the recycling economy for disposables "or in the magazine Chemical Fibers International Vol. 46, April 96, page 102 "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.
Es ist bekannt, diese PVA-Faser mittels einer Karde oder aerodynamisch zu einem Nonwoven zu verarbeiten. Um ihm eine genügende Festigkeit zu geben, werden diese Vliese mittels der mechanischen Nadeltechnik verfestigt und dann zu den gewünschten Kleidungsstücken verarbeitet. Es hat sich gezeigt, daß Vliese mit diesen Fasern, die mit der mechanischen Nadeltechnik verfestigt werden sollen, mit für die Industrie zu geringer Produktionsgeschwindigkeit produziert werden können. Außerdem besteht beim mechanischen Vernadeln die Gefahr der Lochbildung, was für die gewünschte Wasserundurchlässigkeit der Hygieneartikel nachteilig ist.It is known to combine this PVA fiber by means of a card or aerodynamically Process nonwoven. To give it sufficient strength, these are Nonwovens are consolidated using mechanical needle technology and then to the desired ones Garments processed. It has been shown that nonwovens with these fibers, which are to be consolidated with mechanical needle technology, for industry can be produced at slow production speeds. There is also with mechanical needling the risk of hole formation, what is the desired Waterproofing of the hygiene article is disadvantageous.
Durch die EP-A-0 671 496 ist auch ein Verfahren bekannt, bei dem die PVA-Fasern mit anderen saugfähigen Fasern vermischt auf ein tragendes Gewebe abgelegt werden. From EP-A-0 671 496 a method is also known in which the PVA fibers other absorbent fibers mixed are placed on a supporting fabric.
Anschließend wird dieser Verbundstoff genäßt, ggf. auch mittels der hydrodynamischen Wasservernadelung genäßt, verfestigt und geprägt und dann in einem Zweistufenverfahren auf Heizzylindern mit fortlaufend steigenden Temperaturen von 40 °C bis 100 °C getrocknet.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.
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zu entwickeln, mit dem das wie üblich hergestellte Nonwoven aus diesen PVA-Fasern kontinuierlich mit höherer Geschwindigkeit als beim mechanischen Verfahren verfestigt werden kann und dabei ein Produkt hergestellt werden kann, das einwandfreie Qualitäten hat.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 impeccable qualities.
Es ist bekannt, zur Herstellung eines verfestigten endlosen Vliesproduktes allein die hydrodynamische Vernadelung zu verwenden. Dabei wird die von einer Vlieslegemaschine wie Karde oder zusammen mit einem Kreuzleger vorgelegte Vliesbahn unmittelbar anschließend mit den vernadelnden Wasserstrahlen zur Verfestigung des Vliesproduktes beaufschlagt. Anschließen muß das nasse Vlies getrocknet werden. Es ist nun die Idee der Erfindung ein Nonwoven mit diesem Verfahren zu verarbeiten, das zumindest teilweise aus PVA-Fasern gebildet ist. Zunächst scheint es unmöglich, allein dieses Wasservernadelungsverfahren als Verfestigungsverfahren für eine solche Chemiefaser zu verwenden, da die Faser beim Vernadeln längere Zeit mit Wasser in Berührung kommt und deshalb schon jetzt die Gefahr besteht, daß sie sich auflöst. Ein Qualitätsnachteil könnte, wenn nicht schon beim Vernadeln, zumindest beim sich unbedingt anschließenden Trocknen des nassen Vliesproduktes entstehen, da eine Trocknung nicht ohne Wärme möglich ist und hier die Gefahr der Farbveränderung besteht.It is known that only for the production of a consolidated endless nonwoven product to use hydrodynamic needling. The one Fleece laying machine such as a card or placed together with a stacker Nonwoven web immediately afterwards with the needling water jets Consolidation of the nonwoven product. The wet fleece must be connected be dried. It is now the idea of inventing a nonwoven with this Process method that is at least partially formed from PVA fibers. At first, it seems impossible to consider this water needling method alone To use consolidation processes for such a synthetic fiber, since the fiber is used for Needling comes into contact with water for a longer period of time and therefore already There is a danger that it will dissolve. A quality disadvantage could, if not already when needling, at least when drying the wet one Nonwoven product arise because drying is not possible without heat and here there is a risk of color changes.
Ausgehend von einem Verfahren zur Herstellung eines endlosen Vliesproduktes mit hydrodynamischer Vernadelung einer von einer Vlieslegemaschine wie Karde oder zusammen mit einem Kreuzleger vorgelegten Vliesbahn aus zumindest teilweise PVA Fasern und anschließender Beaufschlagung der Vliesoberfläche mit den vernadelnden Wasserstrahlen zur Verfestigung des Vliesproduktes und dann einer sich anschließenden Trocknung des vernadelten Vlieses hat die Erfindung nun herausgefunden, daß es mit einigen besonderen Parametern dennoch möglich ist, ein Vliesprodukt aus dieser Faser allein mittels der hydrodynamischen Methode zu verfestigen und schadenfrei schnell zu trocknen. Dazu ist das vernadelte Vlies vor dem Trocknen mechanisch teilzuentwässern, z. B. abzuquetschten oder abzusaugen, und die Trocknung des Vlieses mit einer Vliesdurchbelüftung und hoher Durchströmgeschwindigkeit von mehr als 2 bis 4 m/sec bei einer Temperatur bis 120 °C durchzuführen.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.
Dabei ist es vorteilhaft, wenn das vorher befeuchtete Nonwoven einmal beidseitig mit den Wasserstrahlen beaufschlagt wird und dabei jeweils von mehreren Wasserstrahlen hintereinander, wobei die Energie der Strahlen der folgenden Düsenbalken immer höher werden sollte, z. B. von 50 bar bis zu 120 bar auf der ersten Seite und von 120 bar bis zu 160 bar auf der zweiten Seite. Die letzte Vernadelung auf jeder Seite sollte mit etwa 80 bar erfolgen und mit einer größeren Anzahl von Wasserstrahlen verteilt über die Breite des Nonwoven durchgeführt werden, um eine gleichmäßig glatte Oberfläche zu erzielen. Mit diesen Bedingungen kann ein Vliesgewicht von 40 bis 150 g/m2 verfestigt werden. Die Transportgeschwindigkeit des Nonwoven liegt bei der Verfestigung bei 70 m/min und mehr. Die Vliesbehandlungsgeschwindigkeit ist nur abhängig von der möglichen Vlieslegeschwindigkeit. Die Produktionsgeschwindigkeit wird auf die jeweilige Vliesgewichte angepaßt, jedenfalls liegt sie bei höheren Gewichten niedriger.It is advantageous if the previously moistened nonwoven is acted upon once on both sides with the water jets and in each case by a plurality of water jets in succession, 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. With these conditions, 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.
Wesentlich sind wie definiert die Trocknungsparameter. Zunächst ist das vernadelte Vlies unmittelbar vor dem Trocknen mechanisch zu entwässern, um dabei eine Feuchtigkeit zu erzielen, die nicht höher ist als 100 %. Dann ist das Vlies zu trocknen mit einer strömenden Trocknungsluft, die nicht höher aufgeheizt ist als 120 °C. Es ist besonders vorteilhaft, wenn die Trocknung mit der Durchbelüftung auf einer sich drehenden, innen unter Saugzug gesetzten Siebtrommel erfolgt und dabei die Luftgeschwindigkeit im Vlies durch eine hohe Ventilatordrehzahl bis zu 4 m/sec erhöht wird. Vielfältige Versuche haben ergeben, daß mit diesem Verfahren eine Schädigung der PVA-Faser nicht eintritt. Sowohl während der Trocknung als auch bei der sich anschließenden heißen Schlußbehandlung traten keine erkennbare Nachteile, wie sonst übliche braune Flecken, auf. Grundsätzlich ist eine Trocknung auch mit einem Bandtrockner, wo auch die Durchbelüftung erzeugt werden kann, oder mit einem IR-Trockner o. ä. möglich. As defined, 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.
Wenn das Vlies noch mit einer wasserabweisend machenden Imprägnierung wie Schaum- oder Flüssigimprägnierung versehen werden sollte, so ist es zweckmäßig diese nach einer 1. Trocknung bis auf 30 % Feuchtigkeit vorzunehmen, es sei denn die Imprägnierung erfolgt naß in naß. Dann nach der ersten Trocknung sollte die zweite Trocknungsstufe genauso wie die erste bei einer Temperatur bis zu 120 °C vorgenommen und das Vlies voll durchgetrocknet werden. Es ist auch möglich, die Imprägnierung erst nach dem Trocknen z. B. bis auf 5 % Feuchtigkeit vorzunehmen. Nach vollständiger Trocknung des vernadelten Vlieses ist es kein Problem, wenn das Vlies noch bei Temperaturen bis zu 210 °C vernetzt wird.If 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.
Es ist bekannt, ein Vlies aus diesen PVA-Fasern mit einer zusätzlichen Schicht aus Pulp oder Papier zu versehen, um die wasserabweisende Eigenschaft des Nonwoven zu erhöhen. Es kann eine Schaumimprägnierung, eine Flüssigimprägnierung, mit Vorteil kann aber auch bei dem erfindungsgemäßen Verfahren eine solche Schicht in Pulpform oder als Tissuepapier aufgegeben und dann mit dem vernadelten Vlies verbunden werden, indem es zur gleichzeitigen rückseitigen Vernadelung mit dem Vlies vor der zweiten Vernadelung auf das Vlies abgelegt und bei der dann einsetzenden Vernadelung mit dem Vlies verbunden wird.It is known to make a nonwoven from these PVA fibers with an additional layer 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.
Claims (10)
- Method for producing a continuous fleece product by means of hydrodynamic needling of a fleece web which is laid down by a fleece-laying machine, such as a card or together with a cross-layer, said fleece web being made at least partially of PVA (polyvinyl alcohol) fibres, subsequent exposure of the fleece surface to needling water jets in order to compact the fleece product and then subsequent drying of the needled fleece, characterised in that the needled fleece is partially dewatered mechanically before drying, e.g. by squeezing it or subjecting it to suction, and the drying of the fleece is performed by means of ventilation of the fleece and at a high through-flow speed of more than 2 to 4 m/sec at a temperature up to 120 °C.
- Method according to claim 1, characterised in that the already pre-dried, water-needled fleece is subjected to a second drying stage by means of ventilation of the fleece and is thereby treated again at a maximum temperature of 120 °C.
- Method according to one of the claims 1 - 2, characterised in that, when the fleece is dry, it is heated briefly, such as for example 20 - 30 sec., to a temperature of approx. 210 °C for curing.
- Method according to one of the claims 1 - 3, characterised in that the water-needled fleece is impregnated with a finishing agent, which renders the fibres water-repellent, prior to drying, after partial drying to approx. 30% moisture content or after final drying.
- Method according to one of the claims 1 - 4, characterised in that the fleece, which is made of PVA fibres, is water-needled successively at least once on alternate sides, i.e. on both sides.
- Method according to one of the claims 1 - 5, characterised in that the fleece, which is made of PVA fibres, is laid down while being water-needled on a belt supporting the fleece, such as e.g. a screen belt or by stretching it over a drum, which belt has a free surface of 18 - 25 % and/or 80 - 120 mesh (wires /inch) with single or multiple bonding.
- Method according to one of the claims 1 - 6, characterised in that the needling of the fleece, which is made of PVA fibres, is performed by a plurality, preferably four nozzle beams in succession, with slightly increasing water pressure respectively, e.g. 50, 80 and 120 bar.
- Method according to claim 5 or 7, characterised in that the second reverse-side needling of the fleece, which is made of PVA fibres, is also performed by a plurality, preferably four nozzle beams in succession and respectively with once again slightly increasing but more highly increasing water pressure, e.g. 120, 140 and 160 bar.
- Method according to claim 7 or 8, characterised in that the final nozzle beam is operated at reduced water pressure, e.g. 80 bar, but has a greater hole density than the previous nozzle beams.
- Method according to one of the claims 1 to 9, characterised in that one side, preferably the second side of the fleece to be needled, said fleece being made of PVA fibres, is coated with pulp or paper of approx. 15 g/m2 before the second water needling and this second water needling is also provided for the purpose of joining this coating to the fleece which has already been needled on one side.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19620503 | 1996-05-22 | ||
| DE19620503A DE19620503A1 (en) | 1996-05-22 | 1996-05-22 | Process for the production of a fleece by hydromechanical needling and product according to this production process |
| PCT/EP1996/003130 WO1997044512A1 (en) | 1996-05-22 | 1996-07-17 | Process for manufacturing a non-woven fabric by hydrodynamic needling, and product of said manufacturing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0900295A1 EP0900295A1 (en) | 1999-03-10 |
| EP0900295B1 true EP0900295B1 (en) | 2000-05-31 |
Family
ID=7794943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96927024A Expired - Lifetime EP0900295B1 (en) | 1996-05-22 | 1996-07-17 | Process for manufacturing a non-woven by hydrodynamic needling |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6112385A (en) |
| EP (1) | EP0900295B1 (en) |
| CN (1) | CN1119446C (en) |
| DE (2) | DE19620503A1 (en) |
| WO (1) | WO1997044512A1 (en) |
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| CA2365849A1 (en) * | 1999-03-26 | 2000-10-05 | Isolyser Company, Inc. | Spunlaced poly(vinyl alcohol) fabrics |
| US6319455B1 (en) | 1999-08-13 | 2001-11-20 | First Quality Nonwovens, Inc. | Nonwoven fabric with high CD elongation and method of making same |
| EP1240374A2 (en) * | 1999-10-28 | 2002-09-18 | Kimberly-Clark Worldwide, Inc. | Dispersible nonwoven materials |
| US6576575B2 (en) | 2000-05-15 | 2003-06-10 | Kimberly-Clark Worldwide, Inc. | Dispersible adherent article |
| EP1424425A1 (en) * | 2002-11-27 | 2004-06-02 | Polyfelt Gesellschaft m.b.H. | Process of making geotextiles from spunbonded filaments |
| DE602004028187D1 (en) * | 2003-03-10 | 2010-09-02 | Kuraray Co | Polyvinyl alcohol fibers and nonwoven fabrics containing them |
| FR2856952B1 (en) * | 2003-07-01 | 2006-09-01 | Rieter Perfojet | BIODEGRADABLE NONTISSE |
| DE10345086A1 (en) * | 2003-07-16 | 2005-02-03 | Fleissner Gmbh | Fully synthetic wipe, method and apparatus for making the wipe |
| BRPI0412663A (en) * | 2003-07-16 | 2006-09-26 | Fleissner Gmbh | fully synthetic cleaning cloth, process and equipment for manufacturing the same |
| 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 |
| WO2006101453A1 (en) * | 2005-03-22 | 2006-09-28 | Agency For Science, Technology And Research | Scaffold and method of forming scaffold by entangling fibres |
| EP1931482A2 (en) * | 2005-09-12 | 2008-06-18 | Sellars Absorbent Materials, Inc. | Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds |
| ES2440256T3 (en) * | 2008-05-29 | 2014-01-28 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Procedure and device for manufacturing nonwoven fabric from filaments |
| KR101001260B1 (en) | 2009-10-14 | 2010-12-14 | (주)태봉 | Manufacturing method of eco-friendly Hanji Nonwoven |
| DE202019100745U1 (en) | 2019-02-08 | 2020-05-11 | Autefa Solutions Germany Gmbh | Drying facility |
Family Cites Families (5)
| 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 |
-
1996
- 1996-05-22 DE DE19620503A patent/DE19620503A1/en not_active Withdrawn
- 1996-07-17 WO PCT/EP1996/003130 patent/WO1997044512A1/en not_active Ceased
- 1996-07-17 DE DE59605371T patent/DE59605371D1/en not_active Expired - Fee Related
- 1996-07-17 CN CN96195762A patent/CN1119446C/en not_active Expired - Fee Related
- 1996-07-17 EP EP96927024A patent/EP0900295B1/en not_active Expired - Lifetime
- 1996-07-17 US US08/983,482 patent/US6112385A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59605371D1 (en) | 2000-07-06 |
| CN1191582A (en) | 1998-08-26 |
| CN1119446C (en) | 2003-08-27 |
| WO1997044512A1 (en) | 1997-11-27 |
| DE19620503A1 (en) | 1997-11-27 |
| EP0900295A1 (en) | 1999-03-10 |
| US6112385A (en) | 2000-09-05 |
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