EP0484812B1 - Vorrichtung für die Bildung eines mehrschichtigen Vlieses aus zufallsorientierten Fasern sowie ein mit dieser Vorrichtung angefertigtes Vlies - Google Patents

Vorrichtung für die Bildung eines mehrschichtigen Vlieses aus zufallsorientierten Fasern sowie ein mit dieser Vorrichtung angefertigtes Vlies Download PDF

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Publication number
EP0484812B1
EP0484812B1 EP91118493A EP91118493A EP0484812B1 EP 0484812 B1 EP0484812 B1 EP 0484812B1 EP 91118493 A EP91118493 A EP 91118493A EP 91118493 A EP91118493 A EP 91118493A EP 0484812 B1 EP0484812 B1 EP 0484812B1
Authority
EP
European Patent Office
Prior art keywords
web
fibers
cylinders
suction system
main drum
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.)
Expired - Lifetime
Application number
EP91118493A
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English (en)
French (fr)
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EP0484812A1 (de
Inventor
Marco Maranghi
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.)
FA-MA JERSEY SpA
Original Assignee
FA-MA JERSEY SpA
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Filing date
Publication date
Application filed by FA-MA JERSEY SpA filed Critical FA-MA JERSEY SpA
Publication of EP0484812A1 publication Critical patent/EP0484812A1/de
Application granted granted Critical
Publication of EP0484812B1 publication Critical patent/EP0484812B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D04H1/70—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)
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00—Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/02—Carding machines
    • D01G15/12—Details
    • D01G15/46—Doffing or like arrangements for removing fibres from carding elements; Web-dividing apparatus; Condensers
    • 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

Definitions

  • the invention relates to an apparatus for forming a veil with multiple layers of "randomized" fibers, to be applied to cards equipped with drum cylinders with toothed linings, or card plates or card caps as well as the veil produced by means of this device.
  • Two different types of apparatus for the formation of fiber webs are already known.
  • the veil of fibers is formed on the last cylinder - which can be a comber or a condenser - from which it is detached by sampling elements, for example cylinders, combers or the like.
  • sampling elements for example cylinders, combers or the like.
  • the fibers of these sails are combed by the combing cylinders in the direction of advancement of the strip and then picked up by the condensing cylinders.
  • the condensing cylinders aim to disorient the fibers, its orientation always remains, in a very large percentage, in the direction of the advancement of the strip, and for that they appear substantially aligned in the direction of the warp .
  • a second type of apparatus is known, with which the veil is formed by removing the fibers from a distributor, normally constituted by a large cylinder or large drum by an air suction system which deposits the fibers on a strip. conveyor, or on a perforated net, positioned below the appliance.
  • a distributor normally constituted by a large cylinder or large drum by an air suction system which deposits the fibers on a strip. conveyor, or on a perforated net, positioned below the appliance.
  • the object of the present invention is to increase the productivity of the machine by obtaining a haze, even of considerable weight, while nevertheless having a uniform and compact product.
  • an apparatus which comprises a number of devices for removing fibers from the large drum by means of "mechanical” systems, such as cylinders, combing machines or the like, combined with a device used for removing from the large drum the residual fibers by an air suction system, so that the veil (s) produced exclusively by "mechanical” means and the veil produced exclusively by means of the air suction can be superimposed on a conveyor belt, creating a veil with multiple layers, characterized by an exceptional uniformity and a very high randomization.
  • the device which is the subject of the present invention which combines the two known systems for removing fibers - "mechanical" and by air suction system - makes it possible to produce sails with a wide variety of weights.
  • the mechanical sampling system does not make it possible to obtain sails weighing more than 30 g / m per sampling point
  • the sampling system by air suction which collects all the residual fibers of the drum, imposes no limitation and allows the production of sails whose weight can reach up to 200 g / m, regardless of the speed of the machine.
  • the quality of the product is better, since the residual fibers, which the cleaning cylinders do not succeed in detaching, are the most refined and they are distributed over the drum more evenly, since they are inside the linings of the drum.
  • These fibers are not drawn back by the drum but they are collected by the air suction system and they form a complementary veil whose quality characteristics are excellent, which is added to the other veils condensed by means " mechanical ".
  • the veil thus obtained is clearly more compact, more regular; the fibers are more randomized and there is the possibility of increasing the weight of the veil.
  • the productivity of the machine can be increased because the subsequent removal of the residual fibers from the drum leaves sufficient space for a larger quantity of feed fibers.
  • the number (10) indicates a card known for the formation of fiber veils.
  • the outer surface of the large drum (11) is equipped with a toothed lining (13) illustrated in FIG. 2.
  • a painter cylinder (12) rotates in the opposite direction to that of the large drum (11), and its toothed lining takes off part of the fibers, fed by the large drum (11).
  • the fiber mat which forms is then condensed by the condensing cylinders (17) and (17 '), from where it is removed by means of sampling cylinders (20) and (20'), which deposit it on a strip. conveyor (18).
  • the painter cylinder (22) also rotates in the opposite direction of rotation to that of the large drum (11) and by means of its toothed lining (14), indicated in FIG. 2, it takes a later part (16) of the fibers. (15) remained on the large drum (11).
  • the fiber mat which forms is then condensed by the condensing cylinders (27) and (27 '), from where it is taken up by sampling cylinders (30) and (30'), which deposit it on a conveyor belt. (28).
  • the layer of fibers originating from the part (19) of the strip (18) is also deposited, thus forming a double layer of fibers.
  • the position of the vacuum chamber (21) relative to the large drum (11) is such that the residual fibers (31) are sucked in and come off the drum.
  • the suction system (23) sucks the air through a net or a perforated conveyor belt (24) where the residual fibers (31) are deposited, there they are conveyed by the walls (25) and (26) and by the side walls of the vacuum chamber (21) quine are not illustrated in the drawings.
  • On the web thus formed on the strip (24), are superimposed those which come from the strip parts (19) and (29), forming three layers of fibers which are then consolidated together by known means.
  • FIG. 3 illustrates one of the possible variants of the present invention, with three groups of cylinders (12, 17, 17 ', 20, 20'; 22, 27, 27 ', 30, 30'; 32, 37, 37 ', 40, 40 '); and four conveyor belts (18, 19; 28, 29; 38, 39; 24).
  • the portion of fibers remaining on the large drum (11) meets the third comb cylinder (32) for the third formation of the web.
  • the present invention makes it possible to obtain a uniform and regular veil, not only by virtue of the different quality of the veils of different formation, but also because the defects likely to derive from unequal excess of fibers in the feed are distributed over paths. of different nature and length, which is why any insufficient supply will be subdivided into different sails, the thinnest areas of which will never correspond and will never overlap on the perforated conveyor belt (24). We therefore obtain an effect similar to that of a varnish with "several layers" which, as we know, is more uniform with a smaller total amount of product only one thicker layer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Details Of Garments (AREA)

Claims (2)

  1. Vorrichtung für die Bildung eines mehrschichtigen Vlieses aus zufallsorientierten Fasern, dadurch gekennzeichnet, daß sie aus der Kopplung mechanischer Mittel (12, 17, 17', 20, 20', 18, 19, 22, 27, 27', 30, 30', 28, 29) wie Zylinder, Kämme und Ähnliches für die Entnahme der Fasern aus der Haupttrommel (11) besteht und ein Ansaugsystem (21, 23, 25, 26) für die Entnahme der restlichen Fasern (31) aus der Haupttrommel (11) aufweist und daß sich das (die) ausschließlich durch die mechanischen Mittel hergestellte(n) Vlies(e) mit dem ausschließlich durch das Ansaugsystem hergestellten Vlies auf einem Förderband (24) überlagert, und daß die mechanischen Mittel aus einem oder mehreren Kammzylindern (12, 22) bestehen, die sich in entgegengesetzter Richtung zur Haupttrommel (11) drehen und mit ihrem gezahnten Belag (14) einen Teil der aus der Haupttrommel (11) geförderten Fasern (16) entnehmen, der daraufhin von den Zylinderkondensatoren (17, 17', 27, 27') kondensiert wird, aus denen der genannte Teil der Fasern (16) durch Entnahmezylinder (20, 20', 30, 30') entnommen wird, die ihn in Form eines Vlieses auf ein Förderband (18, 19, 28, 29) legen, und daß sich unter der Haupttrommel (11) hinter den Kammzylindern (12, 22) eine Unterdruckkammer (21) befindet, unter der ein Ansaugsystem (23) angebracht ist, das sich in einer derartigen Position befindet, daß die restlichen Fasern (31) angesaugt werden, sich von der Haupttrommel (11) lösen und sich in Form eines Vlieses auf das Förderband (24) legen; über dieses Vlies lagern sich die von den anderen Förderbändern (19, 29) beförderten Vliese und bilden auf diese Weise ein mehrschichtiges Faservlies.
  2. Mehrschichtiges Vlies aus zufallsorientierten Fasern, dadurch gekennzeichnet, daß es gleichförmig und kompakt ist, weil es durch eine Überlagerung mehrerer Vliese entsteht, die durch die Kopplung verschiedener Vorrichtungen für die Entnahme der Fasern aus der Haupttrommel (11), insbesondere durch "mechanische" Mittel (12, 17, 17', 20, 20', 18, 19, 22, 27, 27', 30, 30', 28, 29) und ein Ansaugsystem (21, 23, 25, 26) gemäß Anspruch 1 hergestellt wird, und weil die durch die "mechanischen" Mittel entnommenen Vliesfasern in Kettenrichtung sehr gleichförmig und widerstandsfähig sind und ihre Eigenschaften mit denen der durch das Ansaugsystem (21, 23, 25, 26) erzeugten Vliesfasern vereinen, die feiner sind, in sämtliche Richtungen zeigen und im Umkreis von 360° ein entschieden kompakteres, gleichmäßigeres, widerstandsfähigeres Vlies mit einer feineren Oberfläche ergeben, das ein erhebliches Gewicht erreichen kann.
EP91118493A 1990-11-06 1991-10-30 Vorrichtung für die Bildung eines mehrschichtigen Vlieses aus zufallsorientierten Fasern sowie ein mit dieser Vorrichtung angefertigtes Vlies Expired - Lifetime EP0484812B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT12539A IT1241899B (it) 1990-11-06 1990-11-06 Apparecchio per la formazione di un velo a molti strati di fibre randomizzate, e velo ottenuto con detto apparecchio
IT1253990 1990-11-06

Publications (2)

Publication Number Publication Date
EP0484812A1 EP0484812A1 (de) 1992-05-13
EP0484812B1 true EP0484812B1 (de) 1996-03-20

Family

ID=11141349

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91118493A Expired - Lifetime EP0484812B1 (de) 1990-11-06 1991-10-30 Vorrichtung für die Bildung eines mehrschichtigen Vlieses aus zufallsorientierten Fasern sowie ein mit dieser Vorrichtung angefertigtes Vlies

Country Status (4)

Country Link
EP (1) EP0484812B1 (de)
AT (1) ATE135758T1 (de)
DE (1) DE69118110D1 (de)
IT (1) IT1241899B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4302075C2 (de) * 1993-01-26 1996-02-08 Wirkbau Textilmasch Gmbh Deckelkarde
FR2725216B1 (fr) * 1994-09-30 1996-12-20 Thibeau Et Cie A Dispositif pour detacher et transporter a grande vitesse un voile fibreux en sortie de carde
DE19511904B4 (de) † 1995-03-31 2006-07-20 Dilo, Johann Philipp Anlage und Verfahren zur Herstellung von Vliesbahnen
DE19521778A1 (de) * 1995-06-20 1997-01-02 Hollingsworth Gmbh Vlieskrempel, sowie Verfahren zur Vliesherstellung
ITTO980486A1 (it) * 1998-06-05 1999-12-05 Fonderie Officine Riunite F O Carda con cilindro scaricatore.
IT1307247B1 (it) * 1999-04-20 2001-10-30 Fonderie Officine Riunite F O Carda, particolarmente per la preparazione di veli per tessuti nontessuti.
ITTO20020485A1 (it) * 2002-06-10 2003-12-10 F O R Ing Graziano S P A Carda per la preparazione di veli randomizzati per tessuti non tessuti.
DE50308225D1 (de) 2003-07-29 2007-10-31 Spinnbau Gmbh Vlieskrempel und Verfahren zur Herstellung eines Faservlieses

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB277838A (en) * 1926-12-07 1927-09-29 Patrick Henry Walsh Improvements in and relating to carding machines
GB338155A (en) * 1929-05-14 1930-11-14 Proctor & Schwartz Inc Improvements relating to apparatus for use in the manufacture of batting and felts
US4475271A (en) * 1982-04-29 1984-10-09 Chicopee Process and apparatus for producing uniform fibrous web at high rate of speed
DE3805214A1 (de) * 1988-02-19 1989-08-31 Spinnbau Gmbh Wirrvlieskrempel mit mindestens drei arbeitstrommeln

Also Published As

Publication number Publication date
DE69118110D1 (de) 1996-04-25
IT9012539A1 (it) 1992-05-06
IT9012539A0 (it) 1990-11-06
ATE135758T1 (de) 1996-04-15
IT1241899B (it) 1994-02-01
EP0484812A1 (de) 1992-05-13

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