EP1092054A2 - Verfahren zur herstellung eines vlieses aus fasern - Google Patents
Verfahren zur herstellung eines vlieses aus fasernInfo
- Publication number
- EP1092054A2 EP1092054A2 EP99939910A EP99939910A EP1092054A2 EP 1092054 A2 EP1092054 A2 EP 1092054A2 EP 99939910 A EP99939910 A EP 99939910A EP 99939910 A EP99939910 A EP 99939910A EP 1092054 A2 EP1092054 A2 EP 1092054A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- fibers
- perforated
- openings
- structures
- fleece
- 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
- 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
- D04H1/54—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 by welding together the fibres, e.g. by partially melting or dissolving
-
- 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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- 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]
- Y10T442/601—Nonwoven fabric has an elastic quality
- Y10T442/602—Nonwoven fabric comprises an elastic strand or fiber material
Definitions
- the invention relates to a method for producing a nonwoven from fibers with a multiplicity of hole structures extending over the entire cross section of the nonwoven, and to a nonwoven produced by this method.
- Single-layer or multi-layer nonwovens with hole structures that extend over the entire cross-section are required, for example, for coverstock materials for hygiene articles such as sanitary napkins and diapers or for other applications in the textile or technical field.
- the perforated structures serve to allow liquid, tissue components and faeces occurring on the body to be drained as quickly as possible into the liquid-absorbing interior of diapers, feminine hygiene articles or the like.
- the nonwovens can be single or multi-layered, wherein multi-layered nonwovens can be connected to other web-shaped media, in particular foils.
- perforated structures can be introduced into a single- or multi-layered nonwoven in a targeted manner, with the previously known methods having in common that the perforated structures are introduced into the finished nonwoven after solidification, in particular thermal bonding.
- perforated structures are introduced into the consolidated fleece by pressing heated stamps, between which the fleece is passed, pressed against one another such that a hole is melted into the consolidated fleece.
- a similar method is also known from US Pat. No. 5,709,829 as a so-called hot-needle punch method.
- the advantage of this method is that the nonwoven structure is not weakened in its cohesion by the melt edges that arise along the holes. It is disadvantageous, however, that the handle (softness) is negatively influenced by the relatively hard melting edges, insofar as a fleece obtained in this way feels relatively hard and can be perceived by users as unpleasant.
- the perforated structures are created by (cold) punching / cutting out fibers from the consolidated nonwoven.
- Such methods have the advantage that no hard stamping or melting edges are formed and materials obtained in this way therefore have a good grip. It is disadvantageous, however, that these methods can only be implemented at a slow speed.
- the fibers are shortened along the holes, which leads to a lower strength of the fleece.
- the hole structures are passed through two rollers between which the fleece is passed after the fleece has been finished is introduced, one roller having a plurality of heated needles and the other roller having openings corresponding to the needles of the first roller.
- the needles are supposed to displace the fibers - and thereby form the hole structures - and at the same time form depressions around the hole structures and finally seal the edges of the hole structures by melting the fibers.
- the fibers are not shortened or destroyed, but hard melt edges are created here, which negatively affect the grip.
- the introduction of perforated structures after thermobonding the fleece is complex and expensive.
- the object of the invention is therefore to provide a method by which the person skilled in the art is able to create a fleece with perforated structures which has a good grip, the fiber structure of which is not weakened by the introduction of the perforated structures and which does not produce waste feasible and which should be easy and inexpensive to carry out.
- the fibers are laid down in a confused manner on a sieve web to form a fiber web, in a wide step the fiber web a hole structure generating unit is transported, in a third step the hole structures by mechanical displacement of the fibers are produced, the displacement of the fibers leaving their mechanical and chemical structure unaffected, and in a fourth step the fiber web provided with the hole structures is consolidated in a consolidation unit to form a fleece.
- the invention is therefore based on the surprising finding that in order to produce hole structures in a nonwoven, it is sufficient to displace the fibers which cover the area of the hole to be formed and to compress it and / or the surrounding area, if necessary, without it would be necessary to destroy or reduce the fiber pile in the area of the holes to be dilated and / or its overall appearance.
- the fibers of the fibrous web in the area of the perforated structures are optimized or deflected from their previous course before the completion of the fleece by consolidation and optionally thermal bonding, without thermal treatment or simultaneous compression being necessary.
- Suitable fibers or filaments for producing a nonwoven according to the method according to the invention are all fibers and filaments which are suitable for the formation of nonwovens according to the different methods, in particular staple fibers, continuous filaments, bicomponent fibers and filaments. Staple fibers in particular can be particularly suitable.
- the fibrous web can be connected to one or more further nonwovens or nonwovens and / or to another web-like medium, such as a film.
- the risk of the fibers springing back can be countered in an advantageous manner by the fiber web being fed directly to the strengthening unit after the hole structure has been produced.
- a consolidation unit for example a calender roll arrangement
- the fiber web is compressed to the finished nonwoven and, according to an advantageous embodiment of the invention, is simultaneously thermobonded.
- a very short distance will therefore be preferred.
- the fiber web before the third step is pre-consolidated in such a way that the tensile strength of the pre-consolidated fibrous web corresponds to 0.1 to 75%, in particular up to 50%, of the tensile strength of the consolidated nonwoven.
- the unconsolidated fibrous web is to a certain extent tacked by a few bonding points which are very far apart from one another or by the application of pressure and / or heat.
- a certain mechanical stability of the fibrous web can be achieved, as a result of which it can be transported to the hole structure generation unit at a higher speed. The higher speed enables faster production.
- the fibers surrounding the hole structures are fixed before the fiber web is fed to the consolidation unit.
- This fixation is used to prevent the perforated structures from being stretched when the fibrous web, which is now provided with perforated structures, is transported further.
- the fixation i.e. that is, the fibers can easily be stitched together in the vicinity of the perforated structures by suitable means, for example by applying heat and / or pressure to the fiber web, for example by smooth rolling.
- the fourth method step is carried out with the hole structure generating unit directly after the third method step.
- the hole structure generation unit would be used for solidification at the same time.
- the hole structure generating unit has two elements faces facing each other, between which the batt is passed, the face of a first element having a plurality of spikes facing the face, and the face of a second element having openings into which the spikes of the first face can at least partially dip , the fibers of the fibrous web located below the spines being displaced non-destructively when the spikes are immersed in the openings and the perforated structures being formed.
- the openings of the second surface communicate with a vacuum / overpressure source, such as a blower, so that fibers of the fiber web located in the region of the openings are sucked into the openings or blown out of the openings .
- a vacuum / overpressure source such as a blower
- Such a blower can, on the one hand, support the non-destructive displacement of the fibers to form the perforated structures by sucking in the fibers m the openings of the second surface, on the other hand, the blown fiber web provided with the perforated structures can be blown away from the second surface, so that one possibly existing adhesion of the pile of fibers to the second surface after the hole structures have been gently lifted.
- the channels and openings of the vacuum source can be shaped and dimensioned in such a way that the fibers to be deformed or reorganized, which are sucked into the openings and channels of the vacuum source, are reliably prevented from getting caught.
- the first element is a roller, with practical embodiments of the invention providing that the roller has a diameter of 100 to 500 mm.
- Such a roller can be advantageous if a relatively high production speed is to be made possible.
- the first element is a rising and falling plate.
- a plate with which hole structures can be produced discontinuously, can be advantageous if the displacement of the fibers is to be carried out slowly and carefully.
- the spikes of the first element are conical, or have the shape of an involute, or have an ogival cross section, the spikes practically having a height of 0.5 to 5 mm.
- Different shapes, sizes and heights will be used for the spines, depending on the requirements of the fleece to be created, which can be a single-layer or multi-layer fleece, for example an SMS fleece, or a combination of fleece and other web-shaped media.
- the second element is a perforated tape.
- the fibrous web to be treated can be placed on such a perforated band and transported to the first element, where the spikes of the first element then penetrate through the fibrous web into the perforations of the perforated band.
- the second element is a calender roll.
- a calender roll is used as the second element at the same time.
- a nonwoven fabric produced by a method according to the invention has hole structures with a diameter of 0.5 to 5 mm, that the bonding area is 3 to 40% of the nonwoven area and that the number of bonding points is 20 to 120 per square centimeter.
- FIG. 1 shows a schematic representation of a plant for carrying out the method according to the invention
- FIG. 2 shows a detailed view of a hole structure generation unit of the system from FIG. 1, FIG.
- FIG. 3 shows a plan view of a perforated structure of a fleece produced using the method according to the invention
- Fig. 4 shows an alternative embodiment of a
- FIG. 1 shows a first embodiment of a system 10 for carrying out the method according to the invention.
- a fibrous web 18 is first produced from fibers 14 and placed on a screen belt 16.
- a fiber web 18 consisting of fibers 14 is transported further to a perforated structure generation unit 20.
- This perforated structure generating unit 20 consists of a roller 22 which, with its outer surface 24, which forms the first surface 24 of the perforated structure generating unit 20, is arranged above a perforated belt 26 with a surface 28 directed towards the roller 22. This surface 28 forms the second surface 28 of the hole structure generation unit 20.
- the surface 24 of the roller 22 is provided with a multiplicity of spikes 30, which can at least partially dip into holes 32 in the perforated strip 26.
- roller 22 rotates counterclockwise;
- this consolidation unit 38 consists of two calender rolls 40, 42. Through the calender rolls 40, 42, the fiber web 18 is solidified by thermal bonding, so that the finished fleece 44 leaves the calender rolls 40, 42.
- FIG. 2 shows the hole structure generation unit 20 in detail on a greatly enlarged scale compared to FIG. 1.
- a negative pressure is generated by the negative pressure / positive pressure source 34, as a result of which the filaments 14 of the fibrous web 18 located above the hole 32 of the perforated band 26 are sucked into the hole 32.
- FIG 3 shows an example of a hole structure 36 of a fleece 44 created by the method according to the invention in detail.
- the fleece 44 has a multiplicity of receptacles created by the calender rolls 40, 42 Thing points 48, which are evenly distributed over the entire surface of the fleece 44. Due to the corresponding size, number and distribution of the bonding points, it is possible that the hole structure 36 m is also provided with bonding points to a sufficient extent in its edge area 50, so that the hole structure 36 is stabilized by the bonding points 48.
- the hole structure generation unit 20a has a roller 22 corresponding to the roller 22 from FIG. 1.
- the second surface 28a is the outer surface of the calender roller 40a.
- the surface 28a of the calender roll 40a is provided with holes 32a, which spikes 30 of the roll 22 can dip into.
- the holes 32a are also connected to a vacuum source, not shown in detail.
- the arrangement 10a shown in FIG. 4 makes it possible to dispense with a perforated belt 26 and to shorten the transport path from the perforated structure generation unit 20a to the consolidation unit 38a compared to the arrangement 10 shown in FIG. 1.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19827567A DE19827567A1 (de) | 1998-06-20 | 1998-06-20 | Verfahren zur Herstellung eines Vlieses aus Fasern |
DE19827567 | 1998-06-20 | ||
PCT/DE1999/001793 WO1999067454A2 (de) | 1998-06-20 | 1999-06-18 | Verfahren zur herstellung eines vlieses aus fasern |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1092054A2 true EP1092054A2 (de) | 2001-04-18 |
EP1092054B1 EP1092054B1 (de) | 2002-11-13 |
Family
ID=7871530
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99939910A Expired - Lifetime EP1092054B1 (de) | 1998-06-20 | 1999-06-18 | Verfahren zur herstellung eines vlieses aus fasern |
Country Status (5)
Country | Link |
---|---|
US (1) | US6750166B1 (de) |
EP (1) | EP1092054B1 (de) |
AU (1) | AU5406599A (de) |
DE (2) | DE19827567A1 (de) |
WO (1) | WO1999067454A2 (de) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2805718A1 (fr) | 2000-03-03 | 2001-09-07 | Duflot Ind Sa | Barriere isolante thermique antifeu, procede de fabrication d'une telle barriere, vetement comprenant au moins une telle barriere en tant qu'isolant interne |
ATE349315T1 (de) * | 2001-07-03 | 2007-01-15 | Corovin Gmbh | Perforiertes laminat |
DE10204148A1 (de) * | 2002-02-01 | 2003-08-07 | Schmitz Werke | Gewebe und Verfahren zu seiner Herstellung |
DE10232147B4 (de) * | 2002-07-16 | 2004-07-15 | Corovin Gmbh | Thermobondiertes und perforertes Vlies |
DE10232148B4 (de) * | 2002-07-16 | 2009-01-08 | Fiberweb Corovin Gmbh | Verfahren zum flüssigkeitsdurchlässigen Perforieren eines Vlieses |
FR2845697B1 (fr) * | 2002-10-11 | 2005-05-27 | Rieter Perfojet | Procede et machine de production d'un non-tisse a reduction de la vitesse de deplacement de la nappe compactee |
DE10252034B4 (de) * | 2002-11-06 | 2004-12-16 | Johns Manville Europe Gmbh | Airbagschutzhülle |
WO2004044298A1 (en) * | 2002-11-13 | 2004-05-27 | The Procter & Gamble Company | Nonwoven wipe with resilient wet thickness |
US20050091811A1 (en) * | 2003-10-31 | 2005-05-05 | Sca Hygiene Products Ab | Method of producing a nonwoven material |
JP4071704B2 (ja) * | 2003-12-08 | 2008-04-02 | 名古屋油化株式会社 | 伸縮性不織布からなる成形材料、およびそれを用いてなる内装材 |
GB2455286A (en) * | 2007-11-23 | 2009-06-10 | Ball Burnishing Mach Tools | A friction tool for use in the cosmetic treatment of the skin and a method of its use |
CN110088370A (zh) * | 2016-10-31 | 2019-08-02 | 日立普有限公司 | 保温材料 |
EP3425099A1 (de) * | 2017-07-03 | 2019-01-09 | Axel Nickel | Meltblown-vliesstoff mit verbesserter stapelbarkeit und lagerbarkeit |
CN107574573A (zh) * | 2017-10-24 | 2018-01-12 | 武汉纺织大学 | 一种降低蚕丝纤维毡针刺密度的方法 |
CN107780049A (zh) * | 2017-10-24 | 2018-03-09 | 武汉纺织大学 | 一种芳纶纤维毡的负压针刺方法 |
CN107558000A (zh) * | 2017-10-24 | 2018-01-09 | 武汉纺织大学 | 一种减少棉纤维毡针刺过程中强力损失的方法 |
CN107675365A (zh) * | 2017-10-24 | 2018-02-09 | 武汉纺织大学 | 一种石英纤维毡的负压针刺方法 |
CN107558001B (zh) * | 2017-10-24 | 2020-08-21 | 武汉纺织大学 | 一种降低聚酰亚胺纤维毡针刺密度的方法 |
CN107574572A (zh) * | 2017-10-24 | 2018-01-12 | 武汉纺织大学 | 一种提高粘胶纤维毡体积密度的方法 |
CN107558002A (zh) * | 2017-10-24 | 2018-01-09 | 武汉纺织大学 | 一种提高碳纤维毡针刺效率的方法 |
CN107700072A (zh) * | 2017-10-24 | 2018-02-16 | 武汉纺织大学 | 一种芳纶纤维/玻璃纤维毡的负压针刺方法 |
JP7525399B2 (ja) | 2017-11-22 | 2024-07-30 | エクストルージョン グループ,エルエルシー | メルトブローンダイチップアセンブリ及び方法 |
WO2021208008A1 (en) * | 2020-04-16 | 2021-10-21 | The Procter & Gamble Company | Apertured nonwoven |
DE102021107900B4 (de) | 2021-03-29 | 2023-02-02 | Andritz Küsters Gmbh | Anlage zum Verfestigen von Fasern umfassenden Lagen zu einer Vliesbahn |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1065364B (de) * | 1954-06-16 | 1959-09-17 | John Joseph Smith, Highland Park N. J. (V. St. A.) | Ungewebter Faserstoff |
AT297650B (de) * | 1969-04-04 | 1972-04-10 | Bunzl & Biach Ag | Verfahren und Vorrichtung zum Perforieren von Vliesstoffen |
BE773466A (fr) * | 1970-10-06 | 1972-01-31 | Greenbank Eng Co Ltd | Perfectionnements aux appareils pour perforer une matiere textile |
DE3416004A1 (de) * | 1984-04-30 | 1985-10-31 | Henkel KGaA, 4000 Düsseldorf | Verfahren zum herstellen eines vliesstoffes mit lochstruktur und kalander zum durchfuehren des verfahrens |
ZA866658B (en) * | 1985-09-09 | 1987-04-29 | Kimberly Clark Co | Apertured nonwoven web |
US5244711A (en) * | 1990-03-12 | 1993-09-14 | Mcneil-Ppc, Inc. | Apertured non-woven fabric |
DK0598970T4 (da) * | 1992-11-17 | 2000-07-17 | Pantex Srl | Fremgangsmåde og apparat til fremstilling af et produkt i membran eller folie til dækning af sanitære håndklæder eller serv |
CA2148289C (en) * | 1994-05-20 | 2006-01-10 | Ruth Lisa Levy | Perforated nonwoven fabrics |
US5567501A (en) * | 1994-06-15 | 1996-10-22 | International Paper Company | Thermally apertured nonwoven product |
US5830555A (en) * | 1994-06-15 | 1998-11-03 | International Paper Company | Thermally apertured nonwoven product and process for making same |
DE29720192U1 (de) * | 1997-11-14 | 1999-03-25 | Eduard Küsters, Maschinenfabrik, GmbH & Co. KG, 47805 Krefeld | Kalander zum Behandeln einer Bahn |
-
1998
- 1998-06-20 DE DE19827567A patent/DE19827567A1/de not_active Withdrawn
-
1999
- 1999-06-18 DE DE59903412T patent/DE59903412D1/de not_active Expired - Fee Related
- 1999-06-18 AU AU54065/99A patent/AU5406599A/en not_active Abandoned
- 1999-06-18 EP EP99939910A patent/EP1092054B1/de not_active Expired - Lifetime
- 1999-06-18 US US09/719,903 patent/US6750166B1/en not_active Expired - Lifetime
- 1999-06-18 WO PCT/DE1999/001793 patent/WO1999067454A2/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9967454A2 * |
Also Published As
Publication number | Publication date |
---|---|
US6750166B1 (en) | 2004-06-15 |
WO1999067454A3 (de) | 2000-03-09 |
WO1999067454A2 (de) | 1999-12-29 |
AU5406599A (en) | 2000-01-10 |
EP1092054B1 (de) | 2002-11-13 |
DE19827567A1 (de) | 1999-12-23 |
DE59903412D1 (de) | 2002-12-19 |
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