EP0480550A1 - Procédé et installation pour la production de non-tissés en filaments continus - Google Patents

Procédé et installation pour la production de non-tissés en filaments continus Download PDF

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Publication number
EP0480550A1
EP0480550A1 EP91250267A EP91250267A EP0480550A1 EP 0480550 A1 EP0480550 A1 EP 0480550A1 EP 91250267 A EP91250267 A EP 91250267A EP 91250267 A EP91250267 A EP 91250267A EP 0480550 A1 EP0480550 A1 EP 0480550A1
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EP
European Patent Office
Prior art keywords
threads
rollers
channel
roller
pair
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
Application number
EP91250267A
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German (de)
English (en)
Other versions
EP0480550B1 (fr
Inventor
Lüder Dr. Gerking
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Karl Fischer Industrieanlagen GmbH
Original Assignee
Karl Fischer Industrieanlagen GmbH
Priority date (The priority date 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 date listed.)
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Publication of EP0480550A1 publication Critical patent/EP0480550A1/fr
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Anticipated expiration legal-status Critical
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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
    • D04H3/009—Condensation or reaction 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
    • D04H3/005—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
    • D04H3/005—Synthetic yarns or filaments
    • D04H3/009—Condensation or reaction polymers
    • D04H3/011—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
    • 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
    • D04H3/16—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 filaments produced in association with filament formation, e.g. immediately following extrusion

Definitions

  • the invention relates to a method for producing spunbonded nonwovens and a device for carrying out the method.
  • threads made of a melt-spinnable material are spun out of spinnerets by forces acting below the solidified threads, which are applied mechanically by rollers or aerodynamically by air currents are warped and stretched to a certain extent, which gives them a molecular orientation in the longitudinal direction of the thread.
  • the air streams are then used to deposit the threads as evenly as possible on a belt running underneath, the air flowing through the belt or evading laterally.
  • binders by needling, but predominantly by thermal consolidation between heated press rolls in calenders or also with hot air flowing through them, they are consolidated to form a flat structure.
  • the disadvantage of this method is obvious.
  • the plastic melt which is distributed in a large area in the spinnerets, is formed into threads, which are first spun and cooled separately, but then brought together to form the tensile forces to form strands and then separated again in a very complex process in order to cover a large area as evenly as possible.
  • the object of the invention is to provide a method and an apparatus for the production of spunbonded nonwovens even for large web widths, in which the threads are distributed uniformly over the width of the web with the desired sufficient stretching, the consumption of energy and the required amounts of air to be kept low .
  • this object is achieved by the characterizing features of the main claim and the subordinate claim in conjunction with the features of the preamble.
  • the take-off devices consisting of a pair of rollers and an air duct, can be assigned to individual nozzles spinning the thread sheets, the final fleece being able to be produced from several such units of nozzle and take-off device. It can also be a group of threads from a nozzle or from several nozzles arranged along a line as a composite thread sheet spun out and fed to a pair of rollers and an air duct of the tray. This has the advantage that individual nozzles can be replaced in the event of spinning defects by clogging the holes etc. and not the large nozzle which extends over the entire width of the fleece if such defects occur in only one or a few spinning holes.
  • the individual nozzles must be arranged in such a way that the sheets of thread leaving them only meet the first take-off roller and thus there are no differences in the thread spacings between two adjacent sets of threads and there are subsequently gaps or piles at these seams. If this is achieved geometrically from the outset by the design of the device, the threads hit the first roller at uniform intervals from one another and remain in this arrangement because lateral forces are not exerted by the rollers or by the subsequent air duct. Only in the lower part of the air duct towards the depositing device do lateral movements occur due to the deceleration of the flow, which is predetermined by an expansion of the air duct and ends on the depositing surface with the threads at a standstill.
  • the method according to the invention is characterized in that the threads run unchanged essentially parallel to one another after they emerge from the nozzles, over the stretching rollers into the air duct and only in the lower end and are intertwined in three dimensions.
  • the same number of threads per unit length or transverse extension of the nozzle and thus of the fleece formed are deposited as threads per unit length are spun out in the coulter, so that neither accumulations nor dilutions occur during storage.
  • smaller fleece widths may well be a spinneret that extends across the fleece width, the described composition of the sheet of threads from individual nozzles is advantageous for larger widths.
  • Stretching rollers and subsequent air duct should, however, always extend over the entire thread sheet and thus in the basic form of the present invention over the entire width of the fleece.
  • the mechanical stretching of thread coulters of greater width is only operationally and economically feasible if, in the event of malfunctions, in particular due to the tearing of the threads, so-called spin spitters, which lead to windings on the rollers, these windings can be easily removed and quickly re-spun on. This is possible with the device according to the invention.
  • a pair of rollers is rotatably arranged below the spinneret and the cooling section.
  • the family of threads drawn by the air duct, runs between the rollers. These are rotated so that there is a loop of the thread sheet around the rollers. It is advantageous that the largest possible wrap angles are achieved because this increases the mechanically transferable force on the threads. This obeys in a known manner the force acting on the belt drive between the rotating roller and the moving belt. Then the force transferred to the thread is proportional to e "", where j1. and the coefficient of friction between the thread and the roller surface and a is the angle over which the thread wraps around the roller. At higher speeds, the centrifugal force must also be taken into account, which reduces the frictional effect between the thread and the roller surface.
  • a suction flow is more uniform than if it had previously flowed through a blower with generally connected diffusers; the disturbances in the route in front of the suction units that generate the air movement can be kept very small, often negligible.
  • the upper part of the air duct, which follows the last roller, can be kept very narrow because the threads have cooled completely and no longer stick. As a result, the amount of air moved is small and the flow can initially be laminar or only slightly turbulent. The channel then widens in a diffuser shape.
  • Diffusers of this type are difficult to control in the case of large ratios of outlet cross section to inlet cross section, because detachments are easy to set up and therefore there is no longer a uniform flow over the channel cross section.
  • the flow and thus the threads can be spread over a certain width in the running direction of the fleece.
  • high turbulence which leads to streaks and cloudy storage, is avoided because the air speed and thus the air quantities to be extracted below the storage surface are kept small.
  • the present invention has the following advantages: the thread sheet does not have to be spun out of a nozzle which extends over the entire width of the fleece and which, depending on the use of the end product or for reasons of economy, can have a width of more than 5 m, instead, it is possible to provide individual rectangular nozzles arranged parallel to a spinning beam axis.
  • the thread coulters are cooled in a manner familiar from synthetic fiber production below the nozzle by cross-blown air currents. The spinning smoke, which can interfere with later stretching due to roll coverage and channel contamination, can be removed from the side.
  • the rollers In contrast to a purely aerodynamic guidance of the threads, the rollers have a rectifying effect on the threads. Even if these have small fluctuations around their main running directions, perhaps due to the cross-blowing of the cooling, they then lie on the rollers, essentially parallel to one another. Lateral deviations from this direction only occur specifically in the air duct, even entanglement of the threads with one another, because there the later entanglement is initiated into a surface.
  • the degree of stretching is therefore also more uniform than with purely aerodynamic stretching, which leads to more uniform mechanical properties of the threads, such as diameter (titer), tensile strength, elongation, and shrinkage.
  • spunbonded nonwovens can be produced from uniformly highly stretched threads with a uniform distribution of the threads over the width of the fleece.
  • suction channels in which the channel flow is generally the most uniform, only so much force has to be applied that the threads are drawn off the pair of drawing rollers.
  • Previous methods with suction channels under the spinneret allow only a slight stretching of the threads. A higher stretching can be achieved with pressure channels, but the result is still far from what can be achieved with mechanical stretching.
  • the previously known combination of mechanical stretching and subsequent withdrawal with injector channels was limited to thread bundles or tapes with English threads, which then always lead to stringy and cloudy thread deposits in the fleece.
  • the uniform spunbonded nonwovens produced according to the invention and made from highly drawn threads can be placed on a normal, horizontally running collecting belt, usually a sieve belt, the air being sucked off below it.
  • a special embodiment of the invention is the storage on a sieve drum. This has the advantage that it is a rigid, albeit curved surface. Fixed or oscillating flow resistances or a pattern with the rotating surface can be arranged beneath the rotating surface so that the threads are moved back and forth by an upstream effect of these obstacles, whereby a higher uniformity of the nonwovens can be achieved.
  • threads of a melt-spinnable polymer such as polyamide, polyester, polypropylene emerge from a rectangular spinning nozzle 1, in which nozzle bores are arranged in rows, as a thread sheet 2.
  • the molten threads are cooled with air by means of a transverse blowing indicated by the arrows 3, whereby blowing from the inside to the outside through two sets of threads can also be used.
  • the group of threads viewed from the front side, is only represented by line 4 or 4a because of the threads that basically converge downward. In the initial state, the threads run along the line for 4a.
  • roller duo 5a, 5b which is also shown in dashed lines in its starting position, and arrive in a channel 6, which is initially narrow and merges into a diffuser-like extension. It ends in a laying zone 7 above a screening drum 8, in the interior of which the air is sucked out of the channel 6 through the deposited threads into the chamber 9 and is led out to the side through the channel 10.
  • the threads are only aerodynamically distorted by the suction effect inside the drum and stretched to a certain degree.
  • the pair of rollers the surface of which corresponds to that of stretch godets in the spin-stretching process, is rotatably supported, including its drives, which is not shown in more detail here.
  • the pair of rollers 5a, 5b is rotated along the line 11 in the direction of the arrow 12 around the common center point 13, the family of threads, which initially passed between the two rollers without contact, is deflected. In the final state, an S-shaped loop is achieved. Simultaneously with this movement or also afterwards, the channel together with the depositing or screening drum 8 is moved laterally and upwards along the arrows 14 and 15, so that the channel 6 lies tightly against the roller 5b.
  • the inlet of the channel 6 is designed in such a way that it peels off part of the air moved around the roller, which is referred to as the boundary layer, and leads it into the channel 6. This improves the effect of the channel 6.
  • the air speed decreases until it falls below the thread speed and the threads lay in waves, then in loops.
  • the force entering this area should be as large as possible, which is why the area between nozzle 1 and rollers 5a, 5b should only be as long how to cool the threads and for operational reasons.
  • the air duct is kept as narrow as possible in its upper end 16, for example in a width of 2 mm but also 1 mm, in order to process the smallest possible amounts of air which would only interfere with the laying.
  • the width depends on the quantity and titer of the threads and a certain surcharge for reasons of operational safety.
  • the take-off and laying device consisting of the pair of rollers 5a, 5b and the channel 6, are designed in such a way that the largest possible wrap angle is generated on both rollers in order to be able to transmit correspondingly higher forces to the threads. However, there is practically no stretching between the rollers 5a, 5b, since the wrap angles and thus the frictional forces are generally not sufficient.
  • the jacket of the screen drum 8 can be constructed from hexagonal honeycomb walls 18, so-called honeycomb structures.
  • the walls of these honeycombs are perpendicular to the direction of flow. So they can be very thin and thus have little influence on the flow and still form a very rigid cylinder jacket.
  • the honeycomb walls 18 with wrench sizes of, for example, 6 to 8 mm are covered with a finer sieve made of metal or plastic. In the latter case, it can be shrunk onto the drum as a hose, thereby avoiding a seam that could appear in the fleece.
  • Perforated elements 19 shown by the broken line can be installed in the top of the suction chamber 9 below the laying zone 7. These serve on the one hand to throttle the suction strength, since this should not be too strong at the beginning of the laying, in Fig. 1 on the left side of the laying zone 7, so as not to suck in a lot of air unnecessarily here.
  • the perforated element has there a lower permeability and with increasing placement of threads towards the right an increasing permeability.
  • specific positions can be covered. If a honeycomb turns over, less thread material is deposited on this covered honeycomb, caused by an upstream effect of this closed area. The current dodges to the side. In this way, swinging back and forth in small amplitudes of the threads can be achieved. This is only possible if the honeycombs are not too long in the direction of flow, otherwise the upstream effect will be dampened and will no longer be effective in the end.
  • Fig. 1 it is indicated how the fleece 20 produced by the coulter is removed after it has been deposited by the screening drum 8 in a roller 21, loops around it at a certain angle and then fed to a pair of rollers 21a, 21b of a calender, from which it is welded under pressure and temperature. It is then rolled up into a winding 22 using a technique, not shown in more detail, of the winding device known in web processing.
  • FIG. 2 shows an arrangement for withdrawing the threads from the roller 5b by means of an injector channel, the arrangement being used particularly when not a thread family extending over the entire fleece width but rather thread families consisting of individual spinnerets standing parallel to one another are provided. These can then no longer be operated in suction mode because the thread coulters from the individual spinning and drawing positions have to overlap and have to be pivoted in a free jet zone.
  • the usual injector channel can connect to the second roller 5b.
  • the impulse for transporting the thread sheet is triggered by a jet 23 in FIG. 2, which is directed onto the roller 5b and flows out of the slot of a channel 24 which is fed with air at a certain pressure and a certain temperature in the direction of the arrow 25.
  • the injector channel with the irregularities described above, resulting from slits which do not remain constant, has the advantage that any irregularities in the jet 23 on the roller 5b rotating at the thread speed are compensated for.
  • the speed of the air of the jet 23 need not be much higher than the peripheral speed of the roller 5b.
  • the boundary layer of the air moved by the roller 5b has a strong leveling effect.
  • the channel 6 is moved from its rest position into the end position by moving it laterally and then in height to the roller, the sieve drum 8 serving to deposit the threads. It is also possible to tilt the discharge channel 6 out of its rest position and to move it upwards, even if it is to be placed on a sieve belt.
  • the compensation in height and because of the initially between the rollers 5a, 5b and then afterwards Swiveling in of the rollers 5a, 5b laterally offset to the thread sheet lateral compensation can also be realized in such a way that the pair of rollers 5a, 5b is shifted accordingly and lowered onto the channel 6 so that it does not have to be moved with the storage drum 8 or the screen belt .
  • Auxiliary air flows can also be used in the channel 6, if the channel 6 should not initially be placed over the storage zone 7 in suction mode.
  • the rollers 5a, 5b are preferably driven by frequency-controlled motors, the control being carried out via a control device (not shown). Another control device controls the pivoting of the pair of rollers 5a, 5b and the positioning to the channel 6, which can be done with the help of sensors.
  • the speed of the rolls can be controlled so that the second roll 5b runs somewhat faster for reasons of thread tension or runs slower to influence the shrinkage, so that relaxation occurs. However, this only serves to achieve additional effects.
  • both rollers will have the same diameter and be operated at the same number of revolutions, that is to say at the same peripheral speed, so that the forces transmitted to the thread add up along the wrap angle.
  • roller duos can be arranged one below the other in the falling line from the nozzle to the depositing device and swiveled in as described.
  • the stretching rollers 5a, 5b extend over a larger fleece width, it is possible that they are supported on both sides. This considerably simplifies the design compared to single-sided, high-speed, high-speed roller godets. This simplified storage is possible because the family of threads is threading itself into the loop in the manner described by rotating the pair of rollers. It monitoring devices are provided, for example with light barriers, which switch off the drive of the rollers during the winding process due to a malfunction and permit the winding to be removed. The threads that are still spun out are caught above the rollers and during piecing, in which the rollers are again in the starting position shown in FIG. 1, the thread sheet will be fed piece by piece into the channel and back in again by swiveling over the stretching and laying forming a fleece.
  • the device according to the invention also allows the processing of thread sheets from two nozzles instead of just the one spinneret 1 in FIG. 1.
  • a second one would be arranged next to it and the family of threads of, for example, a lower-melting polymer or copolymer of the same type as from the spinneret 1 would be fed to the line 4a or 4 and then stretched together with the structural threads.
  • the basic embodiment of the present invention can be designed by further modifications and additions. Thus, if necessary or desired, preparations can be applied to the threads below the blowing 3.
  • the rollers can be heated, which makes it easier to control the shrinkage of many polymers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
EP91250267A 1990-10-11 1991-10-01 Procédé et installation pour la production de non-tissés en filaments continus Expired - Lifetime EP0480550B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4032523A DE4032523C2 (de) 1990-10-11 1990-10-11 Verfahren und Vorrichtung zur Herstellung von Spinnvliesen
DE4032523 1990-10-11

Publications (2)

Publication Number Publication Date
EP0480550A1 true EP0480550A1 (fr) 1992-04-15
EP0480550B1 EP0480550B1 (fr) 1996-01-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP91250267A Expired - Lifetime EP0480550B1 (fr) 1990-10-11 1991-10-01 Procédé et installation pour la production de non-tissés en filaments continus

Country Status (3)

Country Link
EP (1) EP0480550B1 (fr)
CN (1) CN1036539C (fr)
DE (2) DE4032523C2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237298A1 (de) * 1992-10-05 1994-04-07 Silver Plastics Gmbh & Co Kg Antistatisch ausgerüstetes hydrophobes Verbundmaterial aus Vliesschichten aus thermoplastischem Kunststoff
EP0598463A1 (fr) * 1992-10-26 1994-05-25 Karl Fischer Industrieanlagen Gmbh Procédé et installation pour produire et coucher des faiseaux de filaments continus au moyen de force d'air
EP0902850A1 (fr) * 1996-03-27 1999-03-24 Reemay inc. Procede de production d'un voile tisse-lie

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10322460B4 (de) * 2003-05-16 2007-02-08 Corovin Gmbh Verfahren und Vorrichtung zur Herstellung eines Spinnvlieses aus Filamenten aus aufgeplatzten Fasern, Filamente aus aufgeplatzen Fasern und Vliesstoff
JP5731948B2 (ja) * 2011-04-06 2015-06-10 旭化成せんい株式会社 熱可塑性不織布
CN103789927B (zh) * 2014-01-24 2017-02-15 廊坊中纺新元无纺材料有限公司 一种纺丝成网法非织造布的制造方法
CN110331521A (zh) * 2019-06-13 2019-10-15 大连华阳新材料科技股份有限公司 改善纺粘非织造布生产线产品均匀性的方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402829A (fr) * 1962-05-16 1965-06-18 Freudenberg Carl Procédé de filage par extrusion de structures à base de fibres
US3384944A (en) * 1965-02-10 1968-05-28 Du Pont Apparatus for extruding and blending
US3394435A (en) * 1966-05-31 1968-07-30 Du Pont Apparatus for making a nonwoven web
GB2005320A (en) * 1977-09-26 1979-04-19 Akzo Nv Process and apparatus for the manufacture of a nonwoven web from synthetic filaments
DE3603814A1 (de) * 1986-02-07 1987-08-13 Reifenhaeuser Masch Anlage fuer die herstellung eines fadenvlieses und verfahren zum betrieb einer solchen anlage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3338992A (en) * 1959-12-15 1967-08-29 Du Pont Process for forming non-woven filamentary structures from fiber-forming synthetic organic polymers
US3314122A (en) * 1963-07-01 1967-04-18 Du Pont Apparatus for forming non-woven web structures
DE2022943A1 (de) * 1969-07-31 1971-02-11 Schwarza Chemiefaser Verfahren und Vorrichtung zur Herstellung von textilen Flaechengebilden
DE1965054C3 (de) * 1969-12-27 1979-06-07 Lueder Dr.-Ing. 1000 Berlin Gerking Verfahren zur Herstellung von Vliesen aus Endlosfäden

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1402829A (fr) * 1962-05-16 1965-06-18 Freudenberg Carl Procédé de filage par extrusion de structures à base de fibres
US3384944A (en) * 1965-02-10 1968-05-28 Du Pont Apparatus for extruding and blending
US3394435A (en) * 1966-05-31 1968-07-30 Du Pont Apparatus for making a nonwoven web
GB2005320A (en) * 1977-09-26 1979-04-19 Akzo Nv Process and apparatus for the manufacture of a nonwoven web from synthetic filaments
DE3603814A1 (de) * 1986-02-07 1987-08-13 Reifenhaeuser Masch Anlage fuer die herstellung eines fadenvlieses und verfahren zum betrieb einer solchen anlage

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4237298A1 (de) * 1992-10-05 1994-04-07 Silver Plastics Gmbh & Co Kg Antistatisch ausgerüstetes hydrophobes Verbundmaterial aus Vliesschichten aus thermoplastischem Kunststoff
EP0598463A1 (fr) * 1992-10-26 1994-05-25 Karl Fischer Industrieanlagen Gmbh Procédé et installation pour produire et coucher des faiseaux de filaments continus au moyen de force d'air
EP0902850A1 (fr) * 1996-03-27 1999-03-24 Reemay inc. Procede de production d'un voile tisse-lie
EP0902850A4 (fr) * 1996-03-27 2001-03-14 Reemay Inc Procede de production d'un voile tisse-lie

Also Published As

Publication number Publication date
DE59107241D1 (de) 1996-02-22
CN1036539C (zh) 1997-11-26
CN1061631A (zh) 1992-06-03
DE4032523C2 (de) 1995-04-27
DE4032523A1 (de) 1992-04-16
EP0480550B1 (fr) 1996-01-10

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