EP1199393A2 - Verfahren zur Herstellung von Mikrofaservliesstoffen mit verbesserten flüssigkeitsabweisenden Eigenschaften - Google Patents
Verfahren zur Herstellung von Mikrofaservliesstoffen mit verbesserten flüssigkeitsabweisenden Eigenschaften Download PDFInfo
- Publication number
- EP1199393A2 EP1199393A2 EP01122589A EP01122589A EP1199393A2 EP 1199393 A2 EP1199393 A2 EP 1199393A2 EP 01122589 A EP01122589 A EP 01122589A EP 01122589 A EP01122589 A EP 01122589A EP 1199393 A2 EP1199393 A2 EP 1199393A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- microfibers
- filler particles
- filler
- average diameter
- diameter
- 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.)
- Withdrawn
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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
- 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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/435—Polyesters
-
- 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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43838—Ultrafine fibres, e.g. microfibres
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- 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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4282—Addition polymers
- D04H1/4291—Olefin series
-
- 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
- D04H1/42—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 characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
- D04H1/4326—Condensation or reaction polymers
- D04H1/4334—Polyamides
-
- 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
- D04H1/56—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 in association with fibre formation, e.g. immediately following extrusion of staple fibres
-
- 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
- D04H3/02—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
Definitions
- microfiber nonwovens according to the meltblowing process, described for example in DE 23 08 242, from polyolefinic polymers leads to Microfiber nonwovens with an inherent hydrophobicity. This is due to the hydrophobic properties of the polymers used, such as for example polyethylene or polypropylene.
- This hydrophobicity is for certain uses, such as in Hygienic nonwovens for backsheet nonwovens and topsheet applications for Panty liners or in the technical application area for roofing membranes and filters which liquid-repellent properties are required are not sufficient.
- a disadvantage of these methods is that, due to the introduction of the OAS in the polymer, part of the OAS is not actively available on the surface because they are masked in the cooled polymer melt.
- the task is therefore to develop a process for the production of microfiber nonwovens to provide the OAS used, despite the addition as a master batch, forcibly brought to the surface of the microfibers without being masked Shares of the OAS is coming.
- the average fiber diameter of the fiber matrix (1) average diameter of the OAS introduced as filler particles (2) adjusted that the average fiber diameter is smaller than the average Diameter of the filler particles (2).
- values for the middle are preferred Fiber diameter of 0.8 - 0.9 times the average diameter of the Filler.
- Average diameters of the fiber matrix (1) from including 0.5 to 1.0 times the diameter of the Filler particles (2).
- An average fiber diameter of less than 0.5 times the diameter the filler particle (2) causes the fiber matrix (1) to tear off Filler particles (2), so that the microfiber nonwoven obtained is mechanically unstable and for the intended purposes as a top sheet or roofing membrane cover is no longer suitable.
- Fiber diameter of the fiber matrix (1) greater than 1.0 times the Diameter of the filler particles (2) are covered by the prior art.
- filler particles (2) with an almost monodisperse grain size distribution has proven to be advantageous.
- the grain size distribution can be determined using the scattering of the Assess grain size diameter. In doing so, distributions of grain sizes are included a standard deviation of less than 3% of the mean found as classified as monodispersed. They are therefore suitable for this process.
- filler particles (2) come hydrophobic materials from the series Polytetrafluorethylene, the polysiloxanes or the silanes are used. Is not it possible to obtain these active substances in monodisperse form, they can also on carrier substances such as ceramic base materials or on silica be upset.
- melt flow index of the underlying polymer is also of of great importance for the process.
- Example 3 the temperature of the Extruder / die (3) increases to increase the viscosity of the polymer melt reduce.
- Stretching of the fiber stream emerging from the nozzle (3) is intensified in such a way that fiber diameters are set which almost match those of the filler particles correspond. Due to the strongly hydrophobic nature of the used
- the filler particle (2) now still breaks the filler particle (2) liquid polymer film of the fiber matrix (1) and partially pulls away from the Back surface of the filler particles (2).
- the cooling unit (4) following the nozzle (3) sprays For example, water as a coolant, causing the fiber matrix to cool quickly (1) leads. However, this remains on part of the surface of the Filler particles (2) stick, but leaves a large part of this surface, as in FIG. 2 shown, but free.
- the distance (5) of the cooling unit (4) from the central axis of the nozzle (3) is so to choose that cooling at the moment of the above The polymer film breaks open.
- a nonwoven fabric produced by the method according to the invention shows microscopic observation shows a pearl cord-like structure (FIG. 2), Structures reminiscent of linear ball bearings were also observed.
- the liquid-repellent effect can be measured using the Hydrohead test made. This test is described in Federal Test Standard No. 191 A, Method 5514, using the nonwoven pattern as the lower seal of a Plastic tube with a diameter of 76 mm is used. In the plastic tube then poured in distilled water until the water passed through the test sample Nonwoven penetrates. The higher the amount of water until penetration, measured in mm, the more hydrophobic is the pattern examined.
- the spreading is determined by a test, which is a structure liquid-impermeable underlay, in the middle an absorbent body and as an upper one The top sheet provides for the location. On this test setup, 5 ml Blood replacement fluid is given within 20 seconds and the flat Spread this judged on the topsheet in mm. Large area spread is equate with low liquid-repellent properties, the smaller the areal spread is, the greater the liquid rejection.
- Microfiber nonwovens with an addition of OAS within the melt shows this decrease with repeated wetting not, but, due to the masking of the OAS recognizable from FIG. 1, higher quantities.
- Microfiber nonwovens such as Example 4 from Table 1, which according to the invention Processes produced do not show this masking effect.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
- Durchmesser des Füllstoffpartikel (2)
- Streuung der Durchmesser der Füllstoffpartikel (2)
- Melt Flow Index des eingesetzten Polymers der Fasermatrix (1)
- Temperatur im Extruder und der Spinndüse
- Luftvolumenstrom an der Spinndüse
- Abstand (5) der Mittelachse der Düse (3) zum Kühlaggregat (4)
Claims (7)
- Verfahren zur Erhöhung der hydrophoben Eigenschaften von Mikrofasern eines Mikrofasern enthaltenden Vliesstoffes, wobei der mittlere Durchmesser der Mikrofasern 1- 10 µm beträgt und die Mikrofasern aus einem Polymeren aus der Gruppe der Polyolefine, oder der Polyester, oder der Polyamide besteht und die hydrophoben Eigenschaften durch mindestens einen, in das Faserpolymere der Mikrofasern fest eingelagerten partikelförmigen, in einer Menge von 0,5 bis 10 Gewichts-% bezogen auf das Gewicht der Mikrofasern vorliegenden festen Füllstoff enthält,
dadurch gekennzeichnet, daß Mikrofasern erzeugt werden deren mittlerer Durchmesser höchstens das 1,0-fache des mittleren Durchmessers der Füllstoffpartikel beträgt. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß Mikrofasern erzeugt werden deren mittlerer Durchmesser wenigstens das 0,5 -fache des mittleren Durchmessers der Füllstoffpartikel beträgt. - Verfahren nach Anspruch 1 und 2
dadurch gekennzeichnet, daß der Füllstoff unvollständig vom Polymeren der Mikrofasern eingeschlossen ist. - Verfahren nach Anspruch 1 bis 2
dadurch gekennzeichnet daß das Füllstoffpartikel durchgehend aus einer hydrophoben Substanz wie Polytertrafluorethylen besteht. - Verfahren nach Anspruch 1 bis 2
dadurch gekennzeichnet daß die Füllstoffpartikel lediglich oberflächlich mit einer hydrophoben Substanz wie Polytetrafluorethylen, Polysiloxanen oder Silanen versehen sind. - Verfahren nach Anspruch 1 bis 2
dadurch gekennzeichnet daß die Füllstoffpartikel ganz oder lediglich im Kern aus einer anorganischen Substanz wie beispielsweise Keramik oder Kieselsäure bestehen.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10050510A DE10050510C2 (de) | 2000-10-11 | 2000-10-11 | Verfahren zur Herstellung von Mikrofaservliesstoffen mit verbesserten flüssigkeitsabweisenden Eigenschaften |
| DE10050510 | 2000-10-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1199393A2 true EP1199393A2 (de) | 2002-04-24 |
| EP1199393A3 EP1199393A3 (de) | 2002-08-21 |
Family
ID=7659509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01122589A Withdrawn EP1199393A3 (de) | 2000-10-11 | 2001-09-26 | Verfahren zur Herstellung von Mikrofaservliesstoffen mit verbesserten flüssigkeitsabweisenden Eigenschaften |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1199393A3 (de) |
| DE (1) | DE10050510C2 (de) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034679A1 (de) | 2010-09-14 | 2012-03-22 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Hochfunktionelles spinnvlies aus partikelhaltigen fasern sowie verfahren zur erzeugung |
| RU2668446C1 (ru) * | 2018-01-16 | 2018-10-01 | Акционерное общество "Научно-исследовательский институт синтетического волокна с экспериментальным заводом" (АО "ВНИИСВ") | Установка для получения сорбционно-фильтрующих нетканых материалов с улучшенными свойствами из растворов полимеров методом аэродинамического формования |
| US10501876B2 (en) | 2010-09-14 | 2019-12-10 | Thueringisches Institut Fuer Textil-Und Kunststoff-Forschung E.V. | Highly functional spunbonded fabric made from particle-containing fibres and method for producing same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114395808B (zh) * | 2022-02-21 | 2023-02-28 | 季华实验室 | 一种利用湿法纺丝制备聚四氟乙烯纤维的方法 |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2308242A1 (de) * | 1968-12-23 | 1973-08-30 | Exxon Research Engineering Co | Schmelz-blas-verfahren zur herstellung von vlies-matten |
| JPS63135569A (ja) * | 1986-11-18 | 1988-06-07 | 三井東圧化学株式会社 | 通気性防水不織布 |
| US5494855A (en) * | 1994-04-06 | 1996-02-27 | Kimberly-Clark Corporation | Thermoplastic compositions and nonwoven webs prepared therefrom |
| KR19990082626A (ko) * | 1996-02-12 | 1999-11-25 | 소르뮤넨 페카 | 입자-함유 섬유 |
| GB9609811D0 (en) * | 1996-05-10 | 1996-07-17 | Web Dynamics Ltd | A process for producing meltblown polyolefin fibres for mechanical filtration |
| DE29700987U1 (de) * | 1997-01-22 | 1997-04-03 | Wirz, Peter, 53721 Siegburg | Diffussionsoffene Dachunterspannbahn mit innerer Folienschicht |
| DE19819682A1 (de) * | 1998-05-02 | 1999-11-04 | Dyneon Gmbh | Emulsions-Polytetrafluorethylen-Mikropulver als Additiv für faserbildende Kunststoffe |
| DE19903663A1 (de) * | 1999-01-29 | 2000-08-24 | Doerken Ewald Ag | Verfahren zum Herstellen eines Vlieses insbesondere zur Verwendung für Unterspannbahnen für Bedachungen |
-
2000
- 2000-10-11 DE DE10050510A patent/DE10050510C2/de not_active Expired - Fee Related
-
2001
- 2001-09-26 EP EP01122589A patent/EP1199393A3/de not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012034679A1 (de) | 2010-09-14 | 2012-03-22 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Hochfunktionelles spinnvlies aus partikelhaltigen fasern sowie verfahren zur erzeugung |
| RU2522186C2 (ru) * | 2010-09-14 | 2014-07-10 | Тюрингишес Институт Фюр Текстиль-Унд Кунстштофф-Форшунг Е.В. | Высокофункциональный фильерный нетканый материал, состоящий из содержащих частицы волокон, а также способ его изготовления |
| US10501876B2 (en) | 2010-09-14 | 2019-12-10 | Thueringisches Institut Fuer Textil-Und Kunststoff-Forschung E.V. | Highly functional spunbonded fabric made from particle-containing fibres and method for producing same |
| RU2668446C1 (ru) * | 2018-01-16 | 2018-10-01 | Акционерное общество "Научно-исследовательский институт синтетического волокна с экспериментальным заводом" (АО "ВНИИСВ") | Установка для получения сорбционно-фильтрующих нетканых материалов с улучшенными свойствами из растворов полимеров методом аэродинамического формования |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1199393A3 (de) | 2002-08-21 |
| DE10050510A1 (de) | 2002-04-25 |
| DE10050510C2 (de) | 2003-01-09 |
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