EP0085635B1 - Verfahren und Vorrichtung zum Herstellen von Coregarn - Google Patents

Verfahren und Vorrichtung zum Herstellen von Coregarn Download PDF

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Publication number
EP0085635B1
EP0085635B1 EP83420009A EP83420009A EP0085635B1 EP 0085635 B1 EP0085635 B1 EP 0085635B1 EP 83420009 A EP83420009 A EP 83420009A EP 83420009 A EP83420009 A EP 83420009A EP 0085635 B1 EP0085635 B1 EP 0085635B1
Authority
EP
European Patent Office
Prior art keywords
core
fibres
fact
yarn
process according
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
Application number
EP83420009A
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English (en)
French (fr)
Other versions
EP0085635A1 (de
Inventor
Jean Venot
Jean-Louis Faure
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.)
CESSIONE;ROVATEX S.A.
Original Assignee
Dite Asa Sa SA Ste
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
Priority claimed from FR8201382A external-priority patent/FR2520391A1/fr
Priority claimed from FR8215830A external-priority patent/FR2533236A1/fr
Application filed by Dite Asa Sa SA Ste filed Critical Dite Asa Sa SA Ste
Publication of EP0085635A1 publication Critical patent/EP0085635A1/de
Application granted granted Critical
Publication of EP0085635B1 publication Critical patent/EP0085635B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/16—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using jets or streams of turbulent gases, e.g. air, steam
    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
    • D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
    • D02G3/36—Cored or coated yarns or threads
    • D02G3/367—Cored or coated yarns or threads using a drawing frame
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/04—Guides for slivers, rovings, or yarns; Smoothing dies

Definitions

  • the present invention relates to an improvement in spinning techniques making it possible to produce fiber yarns comprising an internal core, spun yarns which, in the following description, will be designated by the expression "core yarns”.
  • the movable guide surface is subjected to the action of a stream of fluid, air for example, the flow of which is such that it promotes, in cooperation with said guide surface, transport and condensation of the fibers.
  • a stream of fluid air for example, the flow of which is such that it promotes, in cooperation with said guide surface, transport and condensation of the fibers.
  • This flow of fluid can, for example, be obtained by subjecting the guide surface to a vacuum.
  • the action of the fluid current for example the vacuum effect, is advantageously eliminated in the vicinity of the junction point between the fibers and the core with which they must be associated.
  • a rotary guide having at its periphery a groove for guiding the core wire and fibers.
  • the shape of this groove will preferably have a V-shaped section, the branches of which can be more or less spaced from one another.
  • the bottom of this groove is subjected to a vacuum, the core wire passing inside tangentially, the fibers intended to be projected onto the core also being delivered substantially tangentially to the bottom of the groove but upstream from the point. tangency of the core thread.
  • the vacuum inside the groove can be obtained by providing an internal suction source, the air flowing through orifices provided at the bottom of this groove.
  • These orifices can be arranged in different configurations, for example being aligned or, preferably, having substantially the shape of a sinusoid.
  • the guide surface could be made up of any other equivalent means, for example by a conveyor belt system.
  • any known device can be used for drawing a wick of fibers, such as for example sleeve drawing systems, a breaker of the type used in spinning with free fibers, devices for performing a large stretch, commonly designated by the expression "selector", for example of the type described in French patents Nos . 1044932,1117278 and 1503693.
  • the core wire is moved vertically from top to bottom and the rotary guide is arranged at the outlet of a fiber drawing system conventional, the latter being arranged at an angle so that the fibers are brought to the bottom of the groove at an angle of about 45 ° C with the core wire.
  • a rotary guide or condenser
  • the core wire is moved vertically from top to bottom and the rotary guide is arranged at the outlet of a fiber drawing system conventional, the latter being arranged at an angle so that the fibers are brought to the bottom of the groove at an angle of about 45 ° C with the core wire.
  • the distance between the point of exit of the fibers from the member enabling them to be delivered for example between the last pair of cylinders of a drawing system, and the point of contact of said fibers with the guide surface, for example with a rotary guide, will be adapted according to the fibers treated, but it has been found that good results are obtained by having a distance at least equal to the average length of the fibers which must be associated with the core.
  • the fibers can therefore have a relatively large path in the open air which can cause difficulties in obtaining a regular thread.
  • this drawback can be overcome by providing, between the outlet of the fiber drawing device and the guide surface, preferably consisting of a rotary condenser guide, a conveying surface, subjected to a vacuum, and which ensures the transport of the fibers from the outlet of said drawing system to the guide surface.
  • the conveyor surface is advantageously constituted by an endless belt carried, on the one hand, by one of the cylinders of the fiber drawing system and which, on the other hand, comes practically to tangent with the surface of guide on which the fibers are brought for example with a rotary guide.
  • any textile material of known type can be used, for example multifilament yarns, fiber yarns made either beforehand or directly during processing. of the method according to the invention, or even optionally yarns of fibers themselves comprising an internal core.
  • any known type of pin will be used, for example pins with internal or external friction, belt pins, or even pneumatic pins.
  • FIGS. 1 and 7 illustrate a working position of a machine allowing the implementation of the method according to the invention, that is to say making it possible to produce, in a single step, real core wires.
  • This machine comprises, in known manner, a storage area (1), creel for example, where are arranged coils (2) of wires (3) intended to constitute the core of the wire produced in accordance with the invention. These wires (3) are brought, via a deliverer (4), which could possibly be omitted, to the treatment zone proper, designated by the general reference (5), where they will be covered and associated with staple fibers.
  • the treatment zone (5) comprises, in a known manner, a deliverer (6), a false twist spindle (7) of known type, for example a friction spindle, with crossed belts. Of course, any other type of friction pin or not could be used.
  • a third call provider (8) is arranged downstream of the spindle (7) and the wire formed is returned at (9) by means of a conventional system, for example of the type with peripheral and reciprocating drive .
  • upstream of the false twist spindle (7) is arranged one on movable guide face, constituted in this case by a rotary guide (10), intended to distribute discontinuous fibers (11) on the core wire (3).
  • These fibers (11) come from a wick (12) which is stretched, for example by means of a conventional system with sleeves (13).
  • any other wicking system could be used, such as for example the breakers used for the implementation of the spinning technique known as free fibers or the systems allowing a large drawing of the type of those described in the French patents N ° S 1044932, 1117278 and 1503693.
  • the guide surface (10) constituted by the rotary disc is arranged downstream of the last pair of stretching cylinders (14) of a stretching system (13) with sleeves .
  • the rotary guide (10) has, as is clear from Figures 2 and 3, a peripheral groove (15). Furthermore, it comprises radial orifices (16) making it possible to create a depression inside said groove (15).
  • the core wire (3) is brought tangentially, or at a very short distance from the bottom of the groove (15) while the fibers (11) are also delivered tangentially to the bottom of the groove but enveloping the surface of the rotary guide ( 10). Consequently, this rotary guide serves not only as a guide and transport element for the elementary fibers (11), but also as a distribution element for said elementary fibers on the core wire (3).
  • the phenomenon of depression is preferably eliminated in the vicinity of the point of tangency A of the wire (3) and the rotary guide (10), for example by means of a fixed cover (18) which closes the orifices (16 ).
  • the cover (18) is shown in a position such that it closes the orifices (16) substantially from the point of tangency A of the core wire, but it is obvious that this position could be modified, the suppression of the phenomenon of depression being able to be carried out either before or after this point of tangency A and this, according to the materials worked and / or production speeds.
  • Figs. 2 and 3 illustrate in more detail an embodiment of such a guide surface in the form of a rotary guide.
  • the cover (18) for closing the orifices (16) is disposed inside the disc and the depression inside the groove (15) is obtained by means of a source of suction (not shown), connected to an internal conduit provided in the fixed support shaft (17) of the guide (10) and which opens into a cavity of said guide.
  • This guide (10) is mounted on bearings and is driven in rotation, for example by means of a tangential belt not shown.
  • a tangential belt not shown
  • the distance L between the last pair of cylinders (14) of the drawing system (13) and the point of tangency B of the fibers (11) with the bottom of the groove (15) is adjusted by so as to be at least equal to the average length of the fibers (11).
  • Such a thread can be used as it is in weaving or hosiery.
  • Example 1 is repeated with the only difference that one proceeds as illustrated in FIG. 4, that is to say that two wires are simultaneously treated which are then joined downstream of the false twist spindle (7).
  • Example 1 is repeated, but the multifilament core (3) is replaced by a wick (3a) drawn directly on the machine as shown in dotted lines in FIG. 1.
  • the wick (3a) is a cotton wick of Nm3 before stretching and which is stretched 30 times on the machine.
  • a yarn of fibers comprising an outer sheath consisting of fibers (11), which are twisted around a core also consisting of staple fibers substantially at zero twist.
  • Such a yarn can also be used both in weaving and in hosiery.
  • fig. 5 illustrates a variant in accordance with the invention in which the same references have been used to designate the same elements as in the previous examples.
  • the drawing system comprises two sleeves (13) at the outlet of which are arranged a selector cylinder (24) associated with a pressing cylinder (25).
  • the wick of fibers (11) is stretched between these elements and, in accordance with this variant, the cylinder (25) is associated with a conveyor belt (26) constituted by a 'perforated belt inside which is disposed a box of suction (27).
  • the belt (26) supported at its end by a support roller (28), comes practically to tangent with a rotary condenser guide (10), playing the role of movable guide surface and which, in the present case, is produced in accordance with the example illustrated in fig. 6.
  • This guide (10) tends to exert a tensile force on the free end of the fibers (11).
  • this rotary condenser guide has at its periphery a groove (15) having the shape of a V whose branches are widely spaced. Perforations (16) are made at the bottom of this groove and are arranged substantially in the form of a sinusoid. A suction is created inside the rotary guide by any suitable means not shown, for example in a manner similar to the example illustrated in FIGS. 2 and 3.
  • the fibers (11) are distributed practically tangentially at the bottom of the groove (15) and, in this case, thanks to the conveyor belt (26).
  • the core wire (3) is brought, also tangentially, to the bottom of the groove (15) and downstream of the point of projection of the fibers (11), the connection of said fibers with the core ( 3) being obtained by the action of the false twist pin (7).
  • the wire obtained is returned in a conventional manner.
  • Such a variant makes it possible, with respect to the embodiments described above, to ensure better retention of the fibers at the outlet of the stretching system of the food wick (11), in particular in the case where the guide surface (10) , for example rotary condenser guide, is relatively distant from the outlet of the drawing system.
  • the suction conveyor belt (6) even makes it possible to improve the quality of the threads obtained by the fact that it promotes the parallelization of the fibers and even makes it possible, in certain cases, to ensure stretching. complementary.
  • the passage in the open air of the fibers can be very low, and adjusted so that it is shorter than the average length of said fibers, which can make it possible to treat very short fibers, such as carded cotton.
  • the invention is particularly suitable for allowing winding without additional twisting, it could be envisaged to give the wires formed a complementary twist, for example by using a ring and slider winding system.
  • the core wire is moved vertically, from top to bottom; it is obvious that this is not limiting and that the path of the wire could be modified, the displacement of the core wire being able to be carried out from bottom to top, or even horizontally.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Claims (15)

1. Verfahren zur Herstellung eines Fasergarnes mit einer Seele, bei dem
- ein zur Bildung der Seele bestimmter Faden positiv geliefert wird,
- diesem Faden ein vorübergehender Falschdrall erteilt wird,
- auf diesen Faden vor der Falschdrahtspindel (7) Elementarfasern (11) aufgebracht werden, dadurch gekennzeichnet, dass das Aufbringen der Elementarfasern (11) auf die Seele (3) mittels einer drehbaren Führungsfläche erfolgt, auf der die Fasern (11) tangential abgegeben werden und die auf das freie Ende dieser Fasern (11) eine Zugkraft ausübt,
- die Seele in bezug auf die Führungsfläche tangential in einer Richtung vorbewegt wird, die mit der Faser-Zuführungsrichtung zusammenfällt.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die Führungsfläche der Wirkung einer Fluid-Strömung, beispielsweise einer Luftströmung, ausgesetzt ist.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass die Fluid-Strömung erzeugt wird, indem die Führungsfläche einem Unterdruck unterworfen wird.
4. Verfahren nach Anspruch 3, dadurch gekennzeichnet, dass die Führungsfläche durch eine Rotationsführung (10) gebildet ist, die an ihrem Umfang eine Auskehlung (15) zur Führung des Seelenfadens (3) und der Fasern (11) aufweist, an deren Boden Unterdruck herrscht, durch die der Seelenfaden (3) tangential hindurchläuft und in der die zum Aufbringen auf die Seele bestimmten Fasern (11) ebenfalls tangential am Boden der Auskehlung, aber vor dem Tangentenberührungspunkt A des Seelenfadens derart zugeführt werden, dass sie die Rotationsführung (10) auf einem Teil ihres Umfanges umhüllen.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die Führungsfläche zum Aufbringen der Fasern auf die Seele durch eine rotierende Scheibe (10) gebildet ist, die an ihrem Umfang eine Auskehlung (15) aufweist, in der Unterdruck herrscht und in deren Boden Perforierungen (16) eingearbeitet sind, die im wesentlichen in Form einer Sinuslinie angeordnet sind.
6. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass die Unterdruckwirkung in der Umgebung des Tangentenberührungspunktes A des Fadens (3) mit der Führung (10) unterdrückt wird.
7. Verfahren nach Anspruch 4, dadurch gekennzeichnet, dass der Seelenfaden im wesentlichen vertikal fortbewegt wird, wobei die Rotationsführung (10) am Auslass eines herkömmlichen Streckwerks (13) angeordnet ist, das selbst derart schräg angeordnet ist, dass die Fasern (11 ) unter Bildung eines Winkels mit dem Seelenfaden (3) am Boden der Ausnehmung (15) zugeführt werden.
8. Verfahren nach Anspruch 7, dadurch gekennzeichnet, dass der Winkel zwischen dem Seelenfaden (3) und der Zuführungsrichtung der Fasern (11) ungefähr 45° beträgt.
9. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Seelenfaden (3) ein Multifilamentgarn ist.
10. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Seelenfaden aus einem Gespinst aus Fasern (3) gebildet ist, das unmittelbar in der Maschine hergestellt wird.
11. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass der Seelenfaden aus einem Gespinst aus Fasern (3) gebildet ist, das selbst eine zusätzliche Seele enthält.
12. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass nach der Behandlung die beiden Fäden vereinigt werden.
13. Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass eine unter Unterdruck stehende Transportfläche (26) zwischen dem Austritt aus dem Streckwerk für das Faserband (11) und der umlaufenden Führungsfläche (10), auf der die Fasern (11) tangential geliefert werden, angeordnet ist.
14. Vorrichtung für die Durchführung des Verfahrens nach Anspruch 1, die einen Speicherbereich (1) aufweist, wo die Bobinen (2) mit den Seelenfäden (3) angeordnet sind, welche mittels eines Lieferwerks (4) der eigentlichen Behandlungszone (5) zugeführt werden, die ihrerseits ein Lieferwerk (6), eine Falschdrahtspindel (7) und eine Abzugeinrichtung (8) sowie Mittel zum Aufwickeln (9) aufweist, dadurch gekennzeichnet, dass im Fadenlauf vor der Falschdrahtspindel (7) eine drehbare Führungsfläche (10) angeordnet ist, die zum Verteilen von Stapelfasern (11) auf dem Seelenfaden (3) bestimmt ist, wobei diese Fasern (11) aus einem Faserband (12) kommen, das in einer herkömmlichen Einrichtung (13) verstreckt worden ist, und die drehbare Führungsfläche eine Zugkraft auf das freie Ende dieser Fasern (11) ausübt, und dass die Seele (3) zur Führungsfläche tangential vorbewegt wird in einer Richtung, die mit der Zuführungsrichtung der Fasern (11) zusammenfällt.
15. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, dass die drehbare Führungsfläche (10) durch eine Kondensor-Rotationsführung gebildet ist, die eine unter Unterdruck stehende Auskehlung (15) an ihrem Umfang aufweist.
EP83420009A 1982-01-26 1983-01-20 Verfahren und Vorrichtung zum Herstellen von Coregarn Expired EP0085635B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8201382A FR2520391A1 (en) 1982-01-26 1982-01-26 Prodn. of fibres-coated, multifilament thread for weaving etc. - contacts thread with fibres in circumferential channel of rotating guide wheel
FR8201382 1982-01-26
FR8215830A FR2533236A1 (fr) 1982-09-17 1982-09-17 Procede et dispositif pour l'obtention d'un file de fibres comportant une ame interne et nouveaux types de files ainsi realises
FR8215830 1982-09-17

Publications (2)

Publication Number Publication Date
EP0085635A1 EP0085635A1 (de) 1983-08-10
EP0085635B1 true EP0085635B1 (de) 1985-07-03

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP83420009A Expired EP0085635B1 (de) 1982-01-26 1983-01-20 Verfahren und Vorrichtung zum Herstellen von Coregarn

Country Status (6)

Country Link
US (1) US4489540A (de)
EP (1) EP0085635B1 (de)
JP (1) JPS594770U (de)
KR (1) KR880000290B1 (de)
DE (1) DE3360330D1 (de)
ES (1) ES8400158A1 (de)

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FR2545108B1 (fr) * 1983-04-29 1986-04-04 Juillard Yves Procede de filature et dispositif pour la mise en oeuvre de ce procede
ATE27621T1 (de) * 1983-05-18 1987-06-15 Heberlein Hispano Sa Verfahren und vorrichtung zum herstellen eines umwindegarnes.
FR2560230B1 (fr) * 1984-02-24 1987-12-04 Asa Sa Procede pour l'obtention d'un file de fibres
DE3441495A1 (de) * 1984-11-13 1986-05-22 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Offenend-spinnverfahren und vorrichtung zu seiner durchfuehrung
CH665854A5 (de) * 1985-01-17 1988-06-15 Heberlein Hispano Sa Vorrichtung zum herstellen eines umwindegarnes.
FR2583783A1 (fr) * 1985-06-25 1986-12-26 Asa Sa Dispositif pour etirer, condenser et transporter une meche de fibres lors d'une operation de filature.
JPS62117830A (ja) * 1985-11-15 1987-05-29 Murata Mach Ltd 紡績糸の製造装置
DE3828768C2 (de) * 1987-08-29 1995-05-18 Klaus Dipl Ing Bartkowiak Verfahren und Vorrichtung zur Herstellung eines Kern-Mantel-Garnes
USH1225H (en) 1991-09-05 1993-09-07 False-twisting process for producing intertwined yarn of comfort and high cut-resistance
US5568719A (en) * 1992-06-11 1996-10-29 Prospin Industries, Inc. Composite yarn including a staple fiber covering a filament yarn component and confining the filament yarn component to a second thickness that is less than a first thickness of the filament in a relaxed state and a process for producing the same
US5383331A (en) * 1992-06-11 1995-01-24 Proctor; Charles W. Composite comprising staple fiber and filament yarn
US5619848A (en) * 1995-08-09 1997-04-15 Prospin Industries, Inc. Method and apparatus for automatically removing an imperfection from spun filament yarn and staple fibers
DE19836135A1 (de) * 1998-08-10 2000-02-17 Stahlecker Fritz Vorrichtung zum Verdichten eines Faserverbandes an einer Ringspinnmaschine
DE102011116936A1 (de) * 2010-11-29 2012-05-31 Amann & Söhne GmbH & Co. KG Garn, insbesondere Näh- oder Stickgarn sowie Verfahren zur Herstellung eines derartigen Garnes
CN102443905A (zh) * 2011-09-22 2012-05-09 吴江秦邦纺织有限公司 一种导丝轮
TWI656253B (zh) * 2017-09-21 2019-04-11 芯科紡織有限公司 Improved structure, manufacturing method and device of spiral yarn and woven fabric thereof
CN116121916B (zh) * 2023-03-10 2023-07-14 山东杰瑞纺织科技有限公司 一种用于多股纳米纤维复合纱线的加工装置及加工方法

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FR1044932A (de) * 1953-11-23
FR1117278A (fr) * 1954-12-22 1956-05-22 Machines pour procédé d'étirage à grand coefficient
FR1503693A (fr) * 1966-10-06 1967-12-01 Procédé et dispositifs d'étirage de nappes ou de rubans de fibres textiles, réalisant, dans la mèche étirée, la décomposition et la répartition longitudinale de l'irrégularité de section dite onde d'étirage
CA928596A (en) * 1972-07-06 1973-06-19 J. Bobkowicz Andrew Composite yarn forming method and apparatus
FR2304702A1 (fr) * 1975-03-21 1976-10-15 Inst Textile De France Procede et appareil pour le filage de fils a ame
DE2733454A1 (de) * 1977-07-25 1979-02-08 Barmag Barmer Maschf Verfahren zur herstellung eines kernmantelgarns
US4209965A (en) * 1976-12-21 1980-07-01 Bobkowicz E Universal spinning system
AT345701B (de) * 1977-04-27 1978-10-10 Fehrer Ernst Vorrichtung zum spinnen textiler fasern
US4359856A (en) * 1979-10-04 1982-11-23 Bobkowicz E Process for forming a yarn using a partially oriented carrier filament
FR2468667A1 (fr) * 1979-11-05 1981-05-08 Asa Sa Dispositif de commande s'un systeme d'etirage de meches de fibres
ATE11575T1 (de) * 1979-12-22 1985-02-15 Hollingsworth (U.K.) Limited Zusammengesetztes garn.
DE3047987C2 (de) * 1980-01-28 1986-01-23 Ernst Dr. Linz Fehrer Vorrichtung zum Herstellen eines Garnes

Also Published As

Publication number Publication date
ES519241A0 (es) 1983-10-16
JPS594770U (ja) 1984-01-12
KR840003305A (ko) 1984-08-20
ES8400158A1 (es) 1983-10-16
US4489540A (en) 1984-12-25
DE3360330D1 (en) 1985-08-08
JPS63768Y2 (de) 1988-01-09
EP0085635A1 (de) 1983-08-10
KR880000290B1 (ko) 1988-03-19

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