EP0230541A2 - Procédé de fabrication de nappes de filaments déposés au hasard et appareil pour la mise en oeuvre du procédé - Google Patents
Procédé de fabrication de nappes de filaments déposés au hasard et appareil pour la mise en oeuvre du procédé Download PDFInfo
- Publication number
- EP0230541A2 EP0230541A2 EP86116157A EP86116157A EP0230541A2 EP 0230541 A2 EP0230541 A2 EP 0230541A2 EP 86116157 A EP86116157 A EP 86116157A EP 86116157 A EP86116157 A EP 86116157A EP 0230541 A2 EP0230541 A2 EP 0230541A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- slot
- compressor
- nozzles
- nozzle
- thread
- 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
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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
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/005—Synthetic yarns or filaments
- D04H3/007—Addition polymers
-
- 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
- D04H3/03—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 at random
Definitions
- the invention relates to a process for the production of random nonwoven webs from synthetic threads, which are drawn off as a family of threads from spinning nozzles under the influence of a gaseous propellant produced by a compressor or the like and are deposited on a base.
- the invention also relates to a device for carrying out the method.
- DE-PS 1 785 158, GB-PS 1 282 176 and GB-PS 1 297 582 have already disclosed methods and devices of the above type.
- a common feature of these methods is that the family of threads is drawn out of the spinnerets under the influence of compressed air by means of a thread take-off device, stretched inside the thread take-off device and, after passing through a spreading device, is placed on the base to form a nonwoven web.
- the invention achieves this goal in the generic method by the features mentioned in the characterizing part of claim 1.
- the task is by the ge in claim 8 mentioned characteristics solved.
- the invention surprisingly treads a completely new path, which leads away from the thread take-off tubes previously used and instead allows the thread sheet to be drawn off and guided along a wall surface or nozzle wall formed by several slot nozzles. Since no bundling is now carried out within thread take-off tubes, the risk of twisting of individual threads is eliminated, so that randomly woven webs with a uniform structure can be produced.
- the invention is based on the knowledge confirmed by tests that the required thread pulling forces (measured comparatively on a copper wire of 0.12 mm diameter) of approximately 0.2 N can be generated with several slot nozzles arranged one above the other.
- An arrangement is expedient in which the air - based on the thread conveying direction - exits the slot nozzles at an angle of approximately 15 ° or less, so that a strong force component for the tensile force occurs in the thread conveying direction.
- Another important feature of the invention is that an adiabatic or polytropic process is exploited in a novel manner, while the known processes work isothermally.
- the invention goes namely from the mathematically derived knowledge below that higher thread pulling forces can be achieved with the adiabatic process (among other things because of the higher viscosity of the air at higher temperatures) than with the isothermal process, which is advantageous in terms of economy of the new process.
- the admission pressure of the slot nozzles is set somewhat larger than the critical pressure (the ratio of the admission pressure to the ambient air pressure is therefore greater than the Laval pressure ratio).
- the resulting expansion of the air jet at the outlet of the slot nozzles advantageously lifts the thread sheet by a small amount from the flat nozzle wall, so that there is therefore no fear of twisting or sticking to the nozzle wall.
- cooling in the form of bores is provided in the front part of the slot nozzles, through which, for example, water can be passed.
- CH-DS 405 220 a method for the production of fibrous sheets has already been described, in which thread sheets are guided along their associated closed channels, which serve to guide and cool the thread sheets, while the actual thread pulling forces of two each with air open slits is generated directly under the spinneret.
- a secondary air is introduced into the channels via obliquely arranged slots, so that the individual thread sheets are completely solidified after leaving the assigned channels and are deposited one after the other, whereby a multi-surface fiber structure is created. So that as many threads as possible are caught by the air flow, the spinnerets are designed to be relatively narrow, so that the output of the known method is correspondingly low. The application of an adiabatic or polytropic process is not addressed there.
- a so-called flip-flop traversing is provided in an expedient embodiment, which is known per se from DE-PS 24 21 401 and in connection with the novel nozzle wall a special one ensures great uniformity of the structure.
- synthetic threads 12 are drawn as a family of threads from spinnerets 10 by means of an air stream directed downwards, which is generated by slot nozzles 16 arranged one above the other, which form a nozzle wall 18.
- the threads 12 emerging from the spinnerets 10 are cooled to room temperature by means of a cross-air flow indicated by the arrows B, and the threads 12 are aligned by means of a horizontally adjustable tube 14.
- Both the compressor and the slot nozzles 16 are operated polytropically, the compressor compressing the air from the room state polytropically to the same pressure or greater than the critical pressure of 1.894 bar.
- the compressor, the feed lines and the rear of the slot nozzles are insulated.
- 16 holes 20 are provided in the front part of the slot nozzles for water cooling in order to dissipate the heat.
- the spreading device 28 comprises two oscillating Coanda shells 32 and is described in more detail in DE-PS 24 21 401, so that it does not need to be discussed further at this point.
- the admission pressure of the slot nozzles 16 is set somewhat higher than the critical pressure, so that the expansion of the air jet which arises at the outlet slots 26 of the slot nozzles 16 lifts the thread sheet by a small amount from the nozzle wall 18.
- the admission pressure is not chosen too high, but is kept low, if possible, since the ratio of energy expenditure to thread pulling force is more favorable with a low nozzle admission pressure.
- the lower limit of the pre-pressure occurs where the relative speed between the threads 12 and the air is so low that the thread pulling force decreases disproportionately.
- a preferred value of the ratio of energy expenditure to thread pulling force is between 1.1 and 5 bar.
- FIGS. 3-7 The detailed structure of a slot nozzle 16 used in the new method and the new device is shown in FIGS. 3-7.
- Each slot nozzle 16 has a front chamber 34 and a rear chamber 36 which are connected to one another via a gap 42 of 1.5 mm .
- the front chamber 34 opens into the exit slot 26 via a gap 38 (1.5 mm), fins 40 being arranged in the manner of a flow grille in the feed to the exit slot 26 in order to align the turbulent flow in front of the exit slot 26.
- In the front part of the slot nozzles 16 there are bores 20 for cooling by means of cooling water or the like, as can be seen particularly clearly in FIG. 3.
- a supply pipe 44 the two outer pipes, extends in each slot nozzle 16 within the rear chamber 36 Ends are connected to the compressor, not shown, that is, air is supplied from both sides of the supply pipe 44.
- the wall of the supply pipe 44 runs close to the upper and lower wall of the rear chamber 36, forming a gap 48 and 50 of approximately 1.5 mm each.
- the supply pipe 44 has a slot 46 through which the air can escape from the compressor into the rear chamber 36.
- the slot 46 extends along the entire length of the rear chamber 36 and has different slot widths over the length, as is shown schematically in FIG. 4.
- the width of the slot is changed symmetrically to the center of the tube (seen in the longitudinal direction).
- the slot width S is 2 mm, and it widens discretely towards the pipe ends to 3 and 4 mm.
- the jumps in diameter are equalized, so that the slot 46 then continuously widens outwards from 2 mm in the middle to 4 mm.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Nonwoven Fabrics (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Control Of Vending Devices And Auxiliary Devices For Vending Devices (AREA)
- Sewing Machines And Sewing (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86116157T ATE62941T1 (de) | 1986-01-17 | 1986-11-21 | Verfahren zur herstellung von wirrvliesbahnen und vorrichtung zur durchfuehrung des verfahrens. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3601201 | 1986-01-17 | ||
DE3601201A DE3601201C1 (de) | 1986-01-17 | 1986-01-17 | Verfahren zur Herstellung von Wirrvliesbahnen und Vorrichtung zur Durchfuehrung des Verfahrens |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0230541A2 true EP0230541A2 (fr) | 1987-08-05 |
EP0230541A3 EP0230541A3 (en) | 1989-03-22 |
EP0230541B1 EP0230541B1 (fr) | 1991-04-24 |
Family
ID=6292013
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86116157A Expired - Lifetime EP0230541B1 (fr) | 1986-01-17 | 1986-11-21 | Procédé de fabrication de nappes de filaments déposés au hasard et appareil pour la mise en oeuvre du procédé |
Country Status (6)
Country | Link |
---|---|
US (1) | US5045271A (fr) |
EP (1) | EP0230541B1 (fr) |
JP (1) | JPS62223361A (fr) |
AT (1) | ATE62941T1 (fr) |
DE (2) | DE3601201C1 (fr) |
ES (1) | ES2022101B3 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993024693A1 (fr) * | 1992-06-01 | 1993-12-09 | Fiberweb North America, Inc. | Appareil de production d'un non-tisse |
US5545371A (en) * | 1994-12-15 | 1996-08-13 | Ason Engineering, Inc. | Process for producing non-woven webs |
US5688468A (en) * | 1994-12-15 | 1997-11-18 | Ason Engineering, Inc. | Process for producing non-woven webs |
EP1749916A1 (fr) * | 2005-08-02 | 2007-02-07 | Carl Freudenberg KG | Tissus non-tissés, ainsi que leur procédé de fabrication |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH027908Y2 (fr) * | 1987-10-12 | 1990-02-26 | ||
DE4236514C2 (de) * | 1992-10-26 | 1997-03-27 | Fischer Karl Ind Gmbh | Verfahren und Vorrichtung zur Förderung und Ablage von Scharen endloser Fäden mittels Luftkräften |
US5772948A (en) * | 1996-11-19 | 1998-06-30 | Plastaflex Corporation | Melt-blown fiber system with pivotal oscillating member and corresponding method |
US6524521B1 (en) * | 1999-08-30 | 2003-02-25 | Nippon Petrochemicals Co., Ltd. | Method of and apparatus for manufacturing longitudinally aligned nonwoven fabric |
JP3658284B2 (ja) * | 2000-07-05 | 2005-06-08 | ユニ・チャーム株式会社 | 不織布製造装置 |
ATE245217T1 (de) | 2000-07-25 | 2003-08-15 | Freudenberg Carl Kg | Verfahren und vorrichtung zur herstellung eines spinnvlieses |
US20030003834A1 (en) * | 2000-11-20 | 2003-01-02 | 3M Innovative Properties Company | Method for forming spread nonwoven webs |
JP4495871B2 (ja) * | 2001-02-27 | 2010-07-07 | 新日本石油株式会社 | 横配列ウェブの製造方法および装置 |
EP1277867A1 (fr) | 2001-07-16 | 2003-01-22 | Carl Freudenberg KG | Procédé et dispositif pour la fabrication de non-tissés du type spunbonded |
US7320581B2 (en) * | 2003-11-17 | 2008-01-22 | Aktiengesellschaft Adolph Saurer | Stabilized filament drawing device for a meltspinning apparatus |
US7172398B2 (en) * | 2003-11-17 | 2007-02-06 | Aktiengesellschaft Adolph Saurer | Stabilized filament drawing device for a meltspinning apparatus and meltspinning apparatus including such stabilized filament drawing devices |
EP2484910B1 (fr) | 2009-09-30 | 2019-05-15 | Daikin Industries, Ltd. | Compresseur à vis |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH405220A (de) * | 1962-05-16 | 1966-01-15 | Freudenberg Carl Fa | Verfahren zur Herstellung von Faserflächengebilden |
DE1785158A1 (de) * | 1968-08-17 | 1971-03-18 | Merck Patent Gmbh | Duese zum Abziehen eines Fadens oder mehrerer Faeden |
FR2083551A1 (fr) * | 1970-03-25 | 1971-12-17 | Metallgesellschaft Ag | Procede pour la fabrication de nappes formees par des filaments enchevetres dans une installation de production |
DE1760713A1 (de) * | 1968-06-22 | 1972-04-06 | Bayer Ag | Verfahren und Vorrichtung zum Herstellen eines Wirrfaden-Vlieses aus synthetischen Faeden |
DE2421401A1 (de) * | 1974-05-03 | 1975-11-13 | Benecke Gmbh J | Verfahren und vorrichtung zur gleichmaessigen ablage von wirrfaser-endlos-spinnvliesen |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE405220C (de) * | 1923-06-05 | 1924-10-31 | Hans Ludwig | Stossdaempfer, insbesondere fuer Kraftfahrzeuge |
NL270569A (fr) * | 1960-10-24 | |||
NL6611374A (fr) * | 1965-08-16 | 1967-02-17 | ||
DE1560800A1 (de) * | 1966-02-10 | 1971-01-07 | Lutravil Spinnvlies | Verfahren und Vorrichtung zur Herstellung von Mischvliesen durch Schmelzspinnen |
DE1950669C3 (de) * | 1969-10-08 | 1982-05-13 | Metallgesellschaft Ag, 6000 Frankfurt | Verfahren zur Vliesherstellung |
DE2053918B2 (de) * | 1970-11-03 | 1976-09-30 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren und vorrichtung zur herstellung gekraeuselter faeden aus synthetischen hochpolymeren |
JPS5614714B2 (fr) * | 1972-06-23 | 1981-04-06 | ||
US3836346A (en) * | 1973-08-17 | 1974-09-17 | Owens Corning Fiberglass Corp | Apparatus for producing fibrous material |
US3970417A (en) * | 1974-04-24 | 1976-07-20 | Beloit Corporation | Twin triple chambered gas distribution system for melt blown microfiber production |
US4064605A (en) * | 1975-08-28 | 1977-12-27 | Toyobo Co., Ltd. | Method for producing non-woven webs |
DE2618406B2 (de) * | 1976-04-23 | 1979-07-26 | Karl Fischer Apparate- & Rohrleitungsbau, 1000 Berlin | Verfahren zum Herstellen vororientierter Füamentgarne aus thermoplastischen Polymeren |
US4300876A (en) * | 1979-12-12 | 1981-11-17 | Owens-Corning Fiberglas Corporation | Apparatus for fluidically attenuating filaments |
US4334340A (en) * | 1980-01-25 | 1982-06-15 | Crown Zellerbach Corporation | System and method for dispersing filaments |
US4340563A (en) * | 1980-05-05 | 1982-07-20 | Kimberly-Clark Corporation | Method for forming nonwoven webs |
US4405297A (en) * | 1980-05-05 | 1983-09-20 | Kimberly-Clark Corporation | Apparatus for forming nonwoven webs |
US4316731A (en) * | 1980-09-25 | 1982-02-23 | Owens-Corning Fiberglas Corporation | Method and apparatus for producing fibers |
DE3406346C2 (de) * | 1983-02-25 | 1986-08-28 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | Schmelzspinnvorrichtung zur Erzeugung einer Schar von Filamentfäden |
DE3504588C1 (de) * | 1985-02-11 | 1986-07-17 | J.H. Benecke Gmbh, 3000 Hannover | Vorrichtung zum Verteilen eines Fadenbuendels bei der Spinnvliesherstellung |
US4600423A (en) * | 1985-05-01 | 1986-07-15 | Owens-Corning Fiberglas Corporation | Method and apparatus for producing a continuous glass filament mat |
-
1986
- 1986-01-17 DE DE3601201A patent/DE3601201C1/de not_active Expired
- 1986-11-21 EP EP86116157A patent/EP0230541B1/fr not_active Expired - Lifetime
- 1986-11-21 DE DE8686116157T patent/DE3678935D1/de not_active Expired - Fee Related
- 1986-11-21 AT AT86116157T patent/ATE62941T1/de not_active IP Right Cessation
- 1986-11-21 ES ES86116157T patent/ES2022101B3/es not_active Expired - Lifetime
-
1987
- 1987-01-16 JP JP62008856A patent/JPS62223361A/ja active Granted
-
1989
- 1989-06-28 US US07/373,658 patent/US5045271A/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH405220A (de) * | 1962-05-16 | 1966-01-15 | Freudenberg Carl Fa | Verfahren zur Herstellung von Faserflächengebilden |
DE1760713A1 (de) * | 1968-06-22 | 1972-04-06 | Bayer Ag | Verfahren und Vorrichtung zum Herstellen eines Wirrfaden-Vlieses aus synthetischen Faeden |
DE1785158A1 (de) * | 1968-08-17 | 1971-03-18 | Merck Patent Gmbh | Duese zum Abziehen eines Fadens oder mehrerer Faeden |
FR2083551A1 (fr) * | 1970-03-25 | 1971-12-17 | Metallgesellschaft Ag | Procede pour la fabrication de nappes formees par des filaments enchevetres dans une installation de production |
DE2421401A1 (de) * | 1974-05-03 | 1975-11-13 | Benecke Gmbh J | Verfahren und vorrichtung zur gleichmaessigen ablage von wirrfaser-endlos-spinnvliesen |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1993024693A1 (fr) * | 1992-06-01 | 1993-12-09 | Fiberweb North America, Inc. | Appareil de production d'un non-tisse |
US5292239A (en) * | 1992-06-01 | 1994-03-08 | Fiberweb North America, Inc. | Apparatus for producing nonwoven fabric |
US5545371A (en) * | 1994-12-15 | 1996-08-13 | Ason Engineering, Inc. | Process for producing non-woven webs |
US5688468A (en) * | 1994-12-15 | 1997-11-18 | Ason Engineering, Inc. | Process for producing non-woven webs |
US6136245A (en) * | 1994-12-15 | 2000-10-24 | Ason Engineering, Inc. | Method for producing non-woven webs |
EP1749916A1 (fr) * | 2005-08-02 | 2007-02-07 | Carl Freudenberg KG | Tissus non-tissés, ainsi que leur procédé de fabrication |
Also Published As
Publication number | Publication date |
---|---|
EP0230541B1 (fr) | 1991-04-24 |
JPS62223361A (ja) | 1987-10-01 |
ATE62941T1 (de) | 1991-05-15 |
JPH0215658B2 (fr) | 1990-04-12 |
US5045271A (en) | 1991-09-03 |
EP0230541A3 (en) | 1989-03-22 |
DE3678935D1 (de) | 1991-05-29 |
ES2022101B3 (es) | 1991-12-01 |
DE3601201C1 (de) | 1987-07-09 |
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