EP0900295B1 - Verfahren zur Herstellung eines Vlieses hydrodynamischer Vernadelung - Google Patents
Verfahren zur Herstellung eines Vlieses hydrodynamischer Vernadelung 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
Links
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.
Abstract
Description
Claims (10)
- 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 (Polyvinylalcohol) - Fasern und anschließender Beaufschlagung der Vliesoberfläche mit den vernadelnden Wasserstrahlen zur Verfestigung des Vliesproduktes und dann einer sich anschließenden Trocknung des vernadelten Vlieses, dadurch gekennzeichnet, daß das vernadelte Vlies vor dem Trocknen mechanisch teilentwässert, z. B. abgequetscht oder abgesaugt, 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 durchgeführt wird.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das bereits vorgetrocknete, wasservernadelte Vlies einer zweiten Trocknungsstufe mit Vliesdurchbelüftung unterworfen und dabei wieder mit einer Temperatur von maximal 120 °C behandelt wird.
- Verfahren nach einem der Ansprüche 1 - 2, dadurch gekennzeichnet, daß erst das trockene Vlies kurzzeitig, wie z. B. 20 - 30 sec., auf eine Temperatur von etwa 210 °C zum Ausreagieren (curing) erhitzt wird.
- Verfahren nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß das wasservernadelte Vlies vor, nach einer Teiltrocknung auf etwa 30 % Feuchtigkeit oder nach der Endtrocknung mit einem die Faser wasserabweisend machenden Ausrüstungsmittel imprägniert wird.
- Verfahren nach einem der Ansprüche 1 - 4, dadurch gekennzeichnet, daß das aus PVA-Fasern bestehende Vlies hintereinander zumindest einmal wechselseitig, also von beiden Seiten wasservernadelt wird.
- Verfahren nach einem der Ansprüche 1 - 5, dadurch gekennzeichnet, daß das aus PVA-Fasern bestehende Vlies beim Wasservernadeln auf einem das Vlies tragenden Band, wie z. B. Siebband oder Trommelbespannung, mit einer freien Oberfläche von 18 - 25 % und/oder 80 - 120 mesh (Drähte/inch) mit einfacher oder mehrschaftiger Bindung abgelegt wird.
- Verfahren nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß die Vernadelung des aus PVA-Fasern bestehenden Vlieses mit mehreren, vorzugsweise mit vier Düsenbalken hintereinander mit jeweils leicht steigendem Wasserdruck , z. B. mit 50, 80 und 120 bar, durchgeführt wird.
- Verfahren nach Anspruch 5 oder 7, dadurch gekennzeichnet, daß die zweite, umseitige Vernadelung des aus PVA-Fasern bestehenden Vlieses ebenfalls mit mehreren, vorzugsweise vier Düsenbalken hintereinander und mit jeweils wiederum leicht, aber weiter steigendem Wasserdruck, z. B. mit 120, 140 und 160 bar, durchgeführt wird.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, daß der letzte Düsenbalken mit reduziertem Wasserdruck z. B. 80 bar beaufschlagt wird, jedoch eine größere Lochdichte aufweist als die vorhergehenden Düsenbalken.
- Verfahren nach einem der Ansprüche 1 - 9, dadurch gekennzeichnet, daß die eine, vorzugsweise zweite Seite des zu vernadelnden, aus PVA-Fasern bestehenden Vlieses vor der zweiten Wasservernadelung mit Pulp oder Papier vom etwa 15 g/m2 belegt wird und diese zweite Vernadelung auch zur Verbindung dieser Beschichtung mit dem einseitig bereits vernadelten Vlies vorgesehen ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19620503 | 1996-05-22 | ||
DE19620503A DE19620503A1 (de) | 1996-05-22 | 1996-05-22 | Verfahren zur Herstellung eines Vlieses durch hydromechanisches Vernadeln und Produkt nach diesem Herstellungsverfahren |
PCT/EP1996/003130 WO1997044512A1 (de) | 1996-05-22 | 1996-07-17 | Verfahren zur herstellung eines vlieses durch hydrodynamisches vernadeln und produkt nach diesem herstellungsverfahren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0900295A1 EP0900295A1 (de) | 1999-03-10 |
EP0900295B1 true EP0900295B1 (de) | 2000-05-31 |
Family
ID=7794943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96927024A Expired - Lifetime EP0900295B1 (de) | 1996-05-22 | 1996-07-17 | Verfahren zur Herstellung eines Vlieses hydrodynamischer Vernadelung |
Country Status (5)
Country | Link |
---|---|
US (1) | US6112385A (de) |
EP (1) | EP0900295B1 (de) |
CN (1) | CN1119446C (de) |
DE (2) | DE19620503A1 (de) |
WO (1) | WO1997044512A1 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6420284B1 (en) | 1999-03-26 | 2002-07-16 | Isolyser Company, Inc. | Poly (vinyl alcohol) wipes |
WO2000058539A1 (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 |
AU2917001A (en) * | 1999-10-28 | 2001-05-08 | Kimberly-Clark Worldwide, Inc. | Dispersible nonwoven materials |
US6576575B2 (en) | 2000-05-15 | 2003-06-10 | Kimberly-Clark Worldwide, Inc. | Dispersible adherent article |
EP1424425A1 (de) * | 2002-11-27 | 2004-06-02 | Polyfelt Gesellschaft m.b.H. | Verfahren zur Herstellung von Geotextilien aus schmeltgesponnenen Fasern |
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 |
DE502004004972D1 (de) * | 2003-07-16 | 2007-10-25 | Fleissner Gmbh | Vollsynthetisches wischtuch, verfahren und anlage zur herstellung des wischtuches |
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 |
WO2006101453A1 (en) * | 2005-03-22 | 2006-09-28 | Agency For Science, Technology And Research | Scaffold and method of forming scaffold by entangling fibres |
WO2007033158A2 (en) * | 2005-09-12 | 2007-03-22 | Sellars Absorbent Materials, Inc. | Method and device for making towel, tissue, and wipers on an air carding or air lay line utilizing hydrogen bonds |
EP2128320B1 (de) * | 2008-05-29 | 2013-09-25 | Reifenhäuser GmbH & Co. KG Maschinenfabrik | Verfahren und Vorrichtung zur Herstellung von Spinnvliesen aus Filamenten |
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)
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/de not_active Withdrawn
- 1996-07-17 DE DE59605371T patent/DE59605371D1/de not_active Expired - Fee Related
- 1996-07-17 WO PCT/EP1996/003130 patent/WO1997044512A1/de active IP Right Grant
- 1996-07-17 EP EP96927024A patent/EP0900295B1/de not_active Expired - Lifetime
- 1996-07-17 US US08/983,482 patent/US6112385A/en not_active Expired - Fee Related
- 1996-07-17 CN CN96195762A patent/CN1119446C/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
DE19620503A1 (de) | 1997-11-27 |
US6112385A (en) | 2000-09-05 |
CN1191582A (zh) | 1998-08-26 |
CN1119446C (zh) | 2003-08-27 |
EP0900295A1 (de) | 1999-03-10 |
DE59605371D1 (de) | 2000-07-06 |
WO1997044512A1 (de) | 1997-11-27 |
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