EP0900295A1 - Process for manufacturing a non-woven fabric by hydrodynamic needling, and product of said manufacturing process - Google Patents
Process for manufacturing a non-woven fabric by hydrodynamic needling, and product of said manufacturing processInfo
- Publication number
- EP0900295A1 EP0900295A1 EP96927024A EP96927024A EP0900295A1 EP 0900295 A1 EP0900295 A1 EP 0900295A1 EP 96927024 A EP96927024 A EP 96927024A EP 96927024 A EP96927024 A EP 96927024A EP 0900295 A1 EP0900295 A1 EP 0900295A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- nonwoven
- needling
- fleece
- water
- pva fibers
- 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.)
- Granted
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
- the invention has for its object to develop a method with which
- Nonwoven fabricated from these PVA fibers can be continuously solidified at a higher speed than in the mechanical process and a product can thereby be produced which is uniformly solidified and is essentially impermeable to liquids.
- the invention has now found that with some special parameters it is still possible to consolidate a nonwoven product made from this fiber using the hydrodynamic method. So it is z. B. advantageous if the previously moistened non-woven is acted upon on both sides with the water jets and in each case by several water jets in succession, the energy of the jets of the following nozzle bars should always be higher, for. 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 take place at about 80 bar and be 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. 7
- the needled fleece is to be mechanically dewatered immediately before drying, e.g. B. squeeze or suction to achieve a moisture that is not higher than 100% moisture. Then the fleece is to be dried with a drying air that is not heated higher than 120 ° C. It is particularly advantageous if the drying takes place with the ventilation, here in particular with the treatment, on a rotating sieve drum placed inside with suction and the air speed in the fleece is increased by up to 4 m / sec by a high fan speed. Various tests have shown that this method does not damage the PVA fiber. Both during the drying process and during the subsequent hot final treatment, there were no discernible disadvantages like the usual brown spots. Basically, drying is also possible with a belt dryer, where ventilation can also be generated, or with an IR dryer or the like
- the fleece should also be provided with a water-repellent impregnation such as foam or liquid impregnation, it is advisable to do this after a first Carry out drying to 30% moisture, unless the impregnation is carried out wet in wet. Then after the first drying, the second drying stage should be carried out in the same way as the first at a temperature up to 120 ° C and the fleece should be fully dried. It is also possible to apply the impregnation only after drying. B. up to 5% moisture. After the needled fleece has dried completely, it is no problem if the fleece is still crosslinked at temperatures up to 210 ° C
Abstract
Description
Claims
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 true EP0900295A1 (en) | 1999-03-10 |
EP0900295B1 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) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1169505A1 (en) * | 1999-03-26 | 2002-01-09 | Isolyser Company, Inc. | Spunlaced poly(vinyl alcohol) fabrics |
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 |
CA2389223A1 (en) * | 1999-10-28 | 2001-05-03 | 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 |
DE502004004972D1 (en) * | 2003-07-16 | 2007-10-25 | Fleissner Gmbh | FULLY SYNTHETIC WIPE, METHOD AND APPARATUS FOR PRODUCING THE WIPE CLOTH |
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 |
DK2128320T3 (en) * | 2008-05-29 | 2014-01-13 | Reifenhaeuser Gmbh & Co Kg | Method and apparatus for making filter cloth of filaments |
KR101001260B1 (en) | 2009-10-14 | 2010-12-14 | (주)태봉 | Process for producing nonwoven fabric with korean paper |
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 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 US US08/983,482 patent/US6112385A/en not_active Expired - Fee Related
- 1996-07-17 EP EP96927024A patent/EP0900295B1/en not_active Expired - Lifetime
- 1996-07-17 WO PCT/EP1996/003130 patent/WO1997044512A1/en active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9744512A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59605371D1 (en) | 2000-07-06 |
WO1997044512A1 (en) | 1997-11-27 |
CN1119446C (en) | 2003-08-27 |
DE19620503A1 (en) | 1997-11-27 |
US6112385A (en) | 2000-09-05 |
EP0900295B1 (en) | 2000-05-31 |
CN1191582A (en) | 1998-08-26 |
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