EP0603192A1 - Dispositif pour la fabrication de bandes de non-tisses a partir de fibres en desordre. - Google Patents

Dispositif pour la fabrication de bandes de non-tisses a partir de fibres en desordre.

Info

Publication number
EP0603192A1
EP0603192A1 EP92914100A EP92914100A EP0603192A1 EP 0603192 A1 EP0603192 A1 EP 0603192A1 EP 92914100 A EP92914100 A EP 92914100A EP 92914100 A EP92914100 A EP 92914100A EP 0603192 A1 EP0603192 A1 EP 0603192A1
Authority
EP
European Patent Office
Prior art keywords
needle
combs
opening roller
fiber material
roller
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
EP92914100A
Other languages
German (de)
English (en)
Other versions
EP0603192B1 (fr
Inventor
Rene Gloor
Alfred Beeler
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.)
Zellweger Luwa AG
Original Assignee
Zellweger Uster AG
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.)
Filing date
Publication date
Application filed by Zellweger Uster AG filed Critical Zellweger Uster AG
Publication of EP0603192A1 publication Critical patent/EP0603192A1/fr
Application granted granted Critical
Publication of EP0603192B1 publication Critical patent/EP0603192B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/72—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged
    • D04H1/736—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being randomly arranged characterised by the apparatus for arranging 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)

Definitions

  • the invention relates to a method for producing uniform non-woven fiber tapes from disordered fiber material according to the preamble of claim 1 and a device for carrying out the method according to the preamble of claim 13.
  • the disordered fiber material e.g. Cotton in flake form
  • nonwoven tapes with a parallel fiber layer. These tapes are then used as a sample for obtaining quality measurements on the fiber material and, in the form of continuous non-woven tapes, as a preliminary stage in the production of threads or yarns from the fiber material.
  • Known devices for dissolving fiber flakes usually consist of a pair of feed rollers and a dissolving drum. A subsequent drum takes over the dissolved material, stores it or transports it further.
  • the A pair of feed rollers ensures the controlled material handling, which is essential in view of the high degree of opening required for the fiber flakes.
  • pulping devices for fiber flakes there is a need to produce the desired sliver as far as possible without damaging the fiber.
  • Devices of this type according to the prior art for example cards, have a high throughput, but the fibers are damaged to a considerable extent.
  • the pair of feed rollers When disordered fiber material is fed by means of a pair of feed rollers to an opening roller provided with a "card clothing”, the opening roller is released and a uniform nonwoven fabric is obtained therefrom.
  • the pair of feed rollers preferably moves at a lower peripheral speed than the opening roller.
  • At least one feed roller can also be provided with a "card clothing", the elements of this "clothing” running counter to the direction of rotation of the food roller.
  • the pair of feed rollers selectively hold the still disordered fiber material in line, while the "Card clothing” of the opening roller continuously grips and dissolves part of the fibers. A fiber fleece is then made on the subsequent doubling roller.
  • the "card clothing” of a roller is understood to mean the application of a series of narrow strips on the lateral surface of the roller, which are usually covered with teeth or ticks, either in the direction of rotation or inclined towards them.
  • a corresponding design of the outer surface of the roller itself which can be created, for example, by engraving or rolling and with which teeth or ticks are attached to the outer surface of the roller, can be referred to as a clothing.
  • teeth and ticks are summarized below under the term "tick”.
  • the individual fibers of the disordered fiber material are only retained on one line. If the opening roller pulls on a longer fiber, the remaining fibers behind the retention line are drawn towards the feed rollers. As a result, there is always an excess of fiber material between the feed rollers, whereby the selective effect of the clothing on one of the two feed rollers is reduced more and more. Finally, the fiber material is clamped again. If a fiber is now caught by the release roller, the retention force is so great that the fiber is torn off. The resulting nonwoven web therefore no longer has the quality characteristics of the disordered fiber material and can therefore no longer be regarded as a fully representative sample. The torn pieces of the long fibers also reduce the quality of the yarn if the nonwoven web is used as a preliminary stage for yarn production.
  • a device for end-arranging fibers for a fiber length measurement is further known, in which a non-woven fabric is inserted into a needle transport device consisting of a plurality of needle combs and is cyclically transported by this to a pliers device with which the non-woven fabric is used a sample can be taken.
  • the needle transport device in this known device consists of a "needle bed". This term is to be understood as a series of parallel combs with needles that can be moved transversely to the comb direction. During the resting cycle of the nonwoven, the foremost comb of the needle bed in the direction of transport is moved into the last position of a lower row of combs with the transport direction reversed.
  • the comb of this lower row of combs which is in the foremost position, is simultaneously moved back into the needle bed as the rearmost comb.
  • the needle bed has no significant influence on the alignment of the fibers in the nonwoven.
  • the needle bed only serves to hold the fleece in place during the extraction of a partial sample to determine the fiber length distribution.
  • needle transport systems from N.Schlumberger & Cie. That are already on the market.
  • NSC known, for example under the name "Intersecting stretch GN 6" (company prospect Intersecting stretch GN6, pages 8/9, as well as company prospect GN6, page 5) or "chain stretch GC13" (company prospect page 5), in which instead of a pair of pliers (as with the EP -Bl 0 247 420) a pair of rollers is mounted and with which slivers or nonwovens can be combed, de-felted and doubled.
  • these known needle transport systems or needle drawing systems are not suitable for dissolving disordered fiber material.
  • the invention has for its object to provide a method by means of which a uniform nonwoven web can be produced from disordered and undissolved fiber material better than in the known methods with the greatest possible protection of the fiber quality, in particular the fiber length distribution.
  • the invention achieves the stated object with a method which has the features of claim 1 and a device which has the features of claim 13.
  • Fig. 1 shows a schematic representation of an apparatus for performing the method according to the invention
  • FIG. 2 shows a schematic representation of a modified device for carrying out the method according to the invention
  • Fig. 3 shows a partial section through a needle drafting system according to the prior art
  • FIG. 4 shows a partial section analogous to FIG. 3 through a device according to the invention.
  • the device 1 shown in Fig. 1 consists of an open storage container 2, in which unordered fiber material 3 is located, a pair of feed rollers 4, 5 with a first feed roller 4 and a second feed roller 5, a needle bed 6 with an upper row 11 of combs and a lower row of combs 12, which consists of individual combs 7, i occupied by needles, which engage in an undissolved nonwoven web 10 to be manufactured by the device and which move with a transport device, not shown, from the feed roller pair 4, 5 towards the opening roller 8 move there.
  • Further details of the needle bed 6, in particular about their transport device, are described in EP-Bl 0 247 420 and, moreover, from the above-mentioned devices on the market, for example from the company N. Schlumberger & Cie. known.
  • the opening roller 8 is followed by a drum 9, preferably in the form of a doubling roller, on which the dissolved fibers are doubled, which ultimately results in the dissolved nonwoven web 10.
  • the fibers detected by the opening roller 8 are immediately pulled out of the nonwoven fabric and transported as a single fiber onto the spool 9, which results in a uniform, dissolved nonwoven web 10. Through this pull-out process, the tufts of different densities are dissolved.
  • the disordered and undissolved fiber material 3 lying in the storage container 2 is continuously detected and discharged by the feed roller pair 4, 5 in small quantities against this supply.
  • the nonwoven web 10 is pre-formed between the feed rollers 4, 5 runs with the combs 7, i of the needle bed 6 to the opening roller 8 and further to the drum 9 (preferably in the form of a doubling roller), with the transition of the disordered fiber material with each transition 3 is perfected into a nonwoven web 10 made of dissolved fibers.
  • the needle bed 6 runs slightly faster than the peripheral speed of the feed rollers 4.5, so that no windings can occur between the feed rollers 4.5.
  • the pair of feed rollers 4, 5 carries the quantities of fiber material 3 to be drawn off to the needle bed 6, which consists of combs 7, i which can be moved individually in the direction of the nonwoven web 10 and have needles.
  • the needles of the combs 7, i take the fiber material 3 with them.
  • the fiber material 3 is converted into a nonwoven web 10.
  • dissolution is understood to mean the increase in the orderly state of a fiber structure, fibers which are strongly interlocked being pulled apart or “separated”. This dissolution takes place at the transition of the nonwoven web 10 to the opening roller 8.
  • the combs 7, i are continuously exchanged cyclically by the transport device and moved along the needle bed 6.
  • the movement of the transport device can be done continuously or intermittently.
  • the needle bed 6 must expediently be longer than the largest fiber length that occurs.
  • the needle bed 6 can also be realized in the form of a pair of needle bands 16.
  • the two needle belts 16 equipped with needles 17 each run on two pairs of drive cylinders 22.
  • the drive cylinders 22 (not shown in the drawing) can be driven by an electric motor and can be controlled together with the other elements of the device 1.
  • the two needle ribbons 16 are arranged parallel to one another in such a way that their needles 17 engage one another and can thereby take the fiber material 3 with them.
  • the respective pairs of drive cylinders 22 of the two needle belts 16 are to be moved in opposite directions, so that the parts of the two needle belts 16 lying against one another move in the same direction in the direction of the opening roller 8. •
  • the remaining elements of this modified device have already been described in connection with FIG. 1.
  • the advantage of this modified version is that the mechanics are less complex and therefore cheaper.
  • a limiter 13 is expediently installed between the opening roller 8 and the needle transport device 6; 16, which prevents the fibers from being lifted vertically out of the needles 7; 17 by the opening roller 8, which results in a reduction retention force and deterioration in resolution.
  • a hold-down 14 is expediently attached to a lever 15 between the opening roller 8 and the drum 9 (preferably in the form of a doubling roller). In the case of multi-layer nonwoven tape application on the drum 9, this hold-down device 14 ensures that the fiber or nonwoven tape portions previously applied to it are held down before, for example, a new nonwoven tape portion is added.
  • At least one of the feed rollers 4, 5 can have knobs, that is to say wart-like elevations on their lateral surfaces, or a garnish with hooks opposite to their running direction in order to produce a better fiber feed.
  • the opening roller 8 is expediently equipped with a set, the hooks of which are in the running direction of the opening roller 8.
  • the drum 9, which is preferably in the form of a doubling roller, should also be equipped with a set with hooks in the running direction in order to be able to take over the dissolved fibers on the opening roller 8.
  • the peripheral speed of the spool 9 must be greater than that of the opening roller 8.
  • the changes in the fiber length distribution are the. minimal process according to the invention.
  • the inventive resolution of the fibers takes place between the needle transport device 6; 16 and the opening roller 8.
  • the Nadeltransportv ⁇ rraum '6; 16 8 generates the retaining force and the opening roller pull-out force. These two forces must be optimally coordinated; if both forces are too great, the fiber will be torn; if both forces are too small, the achievable resolution is poor.
  • the advantage of the method according to the invention is that the retention force is selective and extensive. In this context, selective means that each fiber is held back individually by a few needles, depending on its length. In the usual clamping methods according to the prior art, the fibers are clamped on a line, which leads to an excessively high retention force and thus to fiber damage.
  • the fibers behind the retention line are increasingly compressed, which leads to an increase in retention force and damage to the fibers.
  • 3 and 4 the problem of the fiber hook is shown.
  • the take-off device consists of a pair of rollers 18, 19 which clamps the fibers in a line and pulls them out of the fiber material in this way, the fiber 20 is forcibly destroyed.
  • this problem is solved in the method according to the invention by using an opening roller 8 with sets.
  • the fiber 20 forming a check mark is only taken over by the release roller 8 when the retaining needle has been removed.
  • the pull-off forces are therefore also selective, in contrast to the clamping line in the "needle drafting system" according to the prior art (FIG. 3).
  • the fiber length distribution is thus better preserved in the method according to the invention than in the previously known methods.
  • the method according to the invention thus achieves the task of producing a uniform nonwoven web 10 from disordered fiber material 3 better than the methods which have become known, with the greatest possible protection of the fiber quality, in particular the fiber length distribution.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)

Abstract

La présente invention propose un procédé pour la fabrication de bandes de non-tissés (10) dans lequel la matière fibreuse contenue en désordre (3) dans un bac (2) en est tirée par une paire de cylindres d'alimentation sur une fonture (6). Des peignes (7, i) de la fonture (6) entraînent la matière fibreuse (3) de manière à produire une bande de non-tissés (10). La fonture (6) transfère cette bande (10) sur un cylindre ouvreur à dents (8), ce qui améliore encore la désintégration de la bande (10). Cette formation d'une bande de non-tissés ménage les fibres plus que lors des procédés connus jusqu'ici et ne modifie notamment la répartition des longueurs de fibre que d'une manière insignifiante.
EP92914100A 1992-07-13 1992-07-13 Procede et dispositif pour la fabrication de bandes de non-tisses a partir de fibres en desordre Expired - Lifetime EP0603192B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1992/000142 WO1994001610A1 (fr) 1992-07-13 1992-07-13 Dispositif pour la fabrication de bandes de non-tisses a partir de fibres en desordre

Publications (2)

Publication Number Publication Date
EP0603192A1 true EP0603192A1 (fr) 1994-06-29
EP0603192B1 EP0603192B1 (fr) 1997-05-14

Family

ID=4548107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92914100A Expired - Lifetime EP0603192B1 (fr) 1992-07-13 1992-07-13 Procede et dispositif pour la fabrication de bandes de non-tisses a partir de fibres en desordre

Country Status (4)

Country Link
US (1) US5426824A (fr)
EP (1) EP0603192B1 (fr)
DE (1) DE59208506D1 (fr)
WO (1) WO1994001610A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657863A (en) * 1995-09-18 1997-08-19 Illinois Tool Works Inc. Welded carrier device
DE19708261B4 (de) * 1997-02-28 2010-08-12 TRüTZSCHLER GMBH & CO. KG Vorrichtung an einer Karde mit einer Speisewalze und mindestens einem Vorreißer
DE19850518A1 (de) * 1998-11-03 2000-05-04 Schlafhorst & Co W Vorrichtung zum Auflösen von Faserbändern
US6834477B2 (en) * 1999-04-16 2004-12-28 Spuhl Ag Method and system for forming strings of pocketed coil springs with traction mechanism

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1936443A (en) * 1930-10-15 1933-11-21 Abbott Machine Co Draft roll
GB450775A (en) * 1935-02-16 1936-07-24 Bernard Alfred Tayler Improvements in or relating to the manufacture of felt
DE1560804A1 (fr) * 1966-05-21 1972-03-16
FR1541681A (fr) * 1966-05-21 1968-10-11 Freudenberg Carl Fa Procédé d'étirage uniforme d'une étoffe non tissée
GB1175363A (en) * 1966-08-22 1969-12-23 Donald Walker Gilling Apparatus and Method.
GB1306345A (fr) * 1970-04-24 1973-02-07
DE3037445C2 (de) * 1980-10-03 1986-12-04 Nordischer Maschinenbau Rud. Baader GmbH + Co KG, 2400 Lübeck Nadelstabstreckwerk für Faserbänder
CH670836A5 (fr) * 1986-05-20 1989-07-14 Peyer Ag Siegfried
CH681627A5 (fr) * 1989-08-29 1993-04-30 Peyer Ag Siegfried

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9401610A1 *

Also Published As

Publication number Publication date
DE59208506D1 (de) 1997-06-19
US5426824A (en) 1995-06-27
EP0603192B1 (fr) 1997-05-14
WO1994001610A1 (fr) 1994-01-20

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