EP0389319B1 - Verfahren und Vorrichtung zum Auslegen von mit Schablonen versehenen Materialbahnen zum automatischen Anpassen - Google Patents

Verfahren und Vorrichtung zum Auslegen von mit Schablonen versehenen Materialbahnen zum automatischen Anpassen Download PDF

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Publication number
EP0389319B1
EP0389319B1 EP90400568A EP90400568A EP0389319B1 EP 0389319 B1 EP0389319 B1 EP 0389319B1 EP 90400568 A EP90400568 A EP 90400568A EP 90400568 A EP90400568 A EP 90400568A EP 0389319 B1 EP0389319 B1 EP 0389319B1
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EP
European Patent Office
Prior art keywords
ply
patterns
conveyor belt
carriage
plies
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
EP90400568A
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English (en)
French (fr)
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EP0389319A1 (de
Inventor
Jean Etcheparre
Bernard Etcheparre
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.)
Lectra SA
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Lectra Systemes SA
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Filing date
Publication date
Application filed by Lectra Systemes SA filed Critical Lectra Systemes SA
Publication of EP0389319A1 publication Critical patent/EP0389319A1/de
Application granted granted Critical
Publication of EP0389319B1 publication Critical patent/EP0389319B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/005—Cloth spreading or piling apparatus in view of its cutting
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41H—APPLIANCES OR METHODS FOR MAKING CLOTHES, e.g. FOR DRESS-MAKING OR FOR TAILORING, NOT OTHERWISE PROVIDED FOR
    • A41H43/00—Other methods, machines or appliances
    • A41H43/02—Handling garment parts or blanks, e.g. feeding, piling, separating or reversing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/26—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles
    • B65H29/34—Delivering or advancing articles from machines; Advancing articles to or into piles by dropping the articles from supports slid from under the articles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2033—Including means to form or hold pile of product pieces
    • Y10T83/2037—In stacked or packed relation

Definitions

  • the present invention relates to a method for stacking several sheets of material having repeating patterns, while respecting the superimposition of the patterns from one sheet to another and device for its implementation.
  • BE 859 478 (G. DESMED & L. MEYNART) describes a device for preparing the cutting of fabric panels comprising a table, a carriage movable longitudinally on said table so as to bring a given length of fabric and a system for needles to fix the different folds of fabric taking into account the patterns.
  • said device comprises a spreading carriage moving in the longitudinal direction and a sheet of support material having a low coefficient of friction and fixed by one end to said carriage to cover part of the support surface.
  • the cuts of the different pieces of fabric are repetitive operations that must be reproduced with each new fold. If they are perfectly suited to the "tailor-made" cut for which the dimensions are never the same from one garment to another, they are, on the other hand, not very productive for small or medium series. It is therefore advantageous, in this case there, to cut several folds at the same time.
  • the needles can be placed, in relation to a parent layout, or in relation to a standard "grid" close to that of the pattern. These needles are always placed before the first fold of fabric is deposited. The operator then deposits the folds, one by one, taking care, with each fold, to plant the needles, one by one, in the right places. The needles being fixed, it is necessary to stretch or contract the fabric to bring it to the desired position. The patterns, although repetitive, never have a perfectly constant pitch, which explains this permanent readjustment. Once the stacking is complete, the mattress thus formed is cut out, directly on the table, after the operator has taken care to remove the needles. This is the only procedure for obtaining a correct result. However, it is completely manual, long and tedious, impractical and is also incompatible with automatic cutting machines.
  • the vertical perforating elements consist of needles which are intended to be removed after stacking the plies and before cutting the pieces and after each fold removal.
  • self-adhesive pads are threaded onto the needles intended to fix the folds between them.
  • the positioning of the perforating elements is carried out after each deposition of folds, said perforating elements being intended to fit into one another to fix the folds between them and the perforating elements preferably being pushpins with a self-adhesive head made of a material which is sufficiently fragile to not hinder cutting.
  • Another object of the invention is a device for stacking sheets of material having repeating patterns while respecting the superposition of said patterns from one sheet fold to the next, comprising a main carriage movable longitudinally relative to the cutting table and a light conveyor belt whose width is at least equal to that of the folds, characterized in that said carriage consists of two separable movable members, one of which is motorized and carries a shooting device used for recording the optimized arrangement of all the parts to be cut, and the other is towed and comprises a transverse clamp device intended to engage the free end of the folds, said towed member being hooked in its rear part to said light conveyor belt intended for support and protect the patterned sheet fold when fed.
  • the light conveyor belt is kept under tension by two belts moving longitudinally on either side of the table passing over idler rollers located at the ends of said table and the belts are attached to the towed member of the main carriage and move with it, driving the free end of the light conveyor belt which supports the fold to be deposited.
  • the towed member of the main carriage further comprises a cutting means intended to separate the successive folds from the supply member after their removal, said cutting means moving transversely with respect to the towed member and the separable members of the main carriage being assembled by means of a device '' electromechanical attachment.
  • the present invention therefore provides a method and a device for making stacks of sheets of material with repeating patterns, while respecting the superposition of patterns from one sheet to another, to prepare the cutting plane as a function of the distribution exact patterns and save material.
  • the general chassis of the device as shown in FIGS. 1 and 2, consists of a table, resting on the ground by means of feet and the tray (1) of which is covered by a thick carpet (2 ) made of rubber or similar.
  • a mobile main carriage moves longitudinally relative to the table.
  • This carriage is made up of two separable movable members, one of which (3) is motorized and the other (6) of which is towed.
  • the motorized member (3) carries a shooting device such as a camera (4). This camera is used for recording the arrangement of the patterns on the first fold. tissue.
  • Servomotors provide controlled movements in speed and position of the motorized member (3) along the longitudinal axis and of the camera along the transverse axis.
  • the camera (4) can therefore be moved at any point above the table.
  • One of the additional advantages of having a camera is to be able to take into account possible faults. Indeed, when operators spread out the folds, if they notice the presence of a defect, they can move the camera above this defect and, by superimposing on the screen with the real displacement, they can appreciate the importance of this defect: either it is outside the pieces and can be left, or it is on a piece and it is absolutely necessary to eliminate it hence the exclusion of the part of fabric concerned according to traditional methods.
  • the towed member (6) comprises a transverse clamp device (12) intended to engage the free end of the folds of tissue and on which is hung in its rear part a light conveyor belt (7), for example of the Mylar type, intended to support and protect the underside of the fold during its feeding.
  • This light conveyor belt (7) is kept under tension by two belts (10) moving longitudinally on either side of the table passing over idler rollers (5) located at the ends of the table.
  • the strip (7) is fixed at its free ends to the belts (10).
  • the belts (10) are attached to the towed member (6) and move with it, driving the free end of the strip (7) which thus remains always taut and which supports the fold to be deposited.
  • the towed member (6) also includes a cutting means for separating the successive plies of the fabric supply member after they have been placed on the table.
  • the supply member preferably consists of a roller (8), placed behind the table and which is capable of delivering tissue almost tension free.
  • the axis of the roller (8) is motorized and receives start or stop orders via an optoelectronic cell (9).
  • the fabric loop deliberately created between the fabric roll and the table allows automatic regulation of the fabric supply on the table. The tension of the fabric is at most equal to the weight of the loop.
  • the fabric fold is therefore cut transversely by the cutting means which preferably consists of a rotary electric knife.
  • This knife is carried by a secondary carriage which moves transversely on the towed member (6) and which is moved by an electric motor or a pneumatic cylinder.
  • An automatic attachment device (15) makes it possible to assemble the motorized member (3) with the towed member (6).
  • the towed member (6) is placed behind the motorized member (3) at a sufficient distance so that the operators can intervene on the fabric without being hampered.
  • the towed member can be moved from one end of the table to the other to spread out a controlled length of fabric.
  • a relatively rigid sheet such as a sheet of paper of the Kraft paper type or similar
  • the different folds of fabric will be placed on this sheet. Its role is to serve as a rigid support for the future mattress in order to facilitate handling.
  • the movable members (3, 6) are assembled by means of the hooking device to constitute the main movable carriage. The latter is brought into the rear position. The operators take the free end of the fabric (14), engage it in the clamp device (12) of the member (6) of the main carriage and lock the clamp to firmly hold the tissue.
  • the main carriage is sent towards the front of the table, which has the effect of unrolling and stretching a certain length of fabric above the table by resting it on the light conveyor belt (7).
  • the clamp (12) while maintaining manually or by mechanical means the free end of the fabric on the table then the main carriage is brought back, which results in depositing the fabric on the table.
  • the main carriage is stopped at a certain predetermined distance and the fabric is cut across by means of the knife (13) of the member (6).
  • the operator searches for the registered standard placement. This placement then appears on the screen. Superimposed and thanks to the camera, he sees the fabric and its patterns. It then has computer functions that allow you to readjust the placement piece precisely in relation to the pattern. Whenever necessary, the camera will be moved so as to reach the places outside the screen field.
  • this interactive placement operation consists in superimposing several plies of fabric while ensuring the exact superposition of the patterns relative to the first ply of fabric placed.
  • vertical perforating elements (11) are used such as fine needles sharpened at their two ends which are stitched on the fabric at the places which are considered significant and which are predetermined. The operator performs this work according to his experience and the quantity of needles depends on the quality of superposition which he wishes to obtain.
  • the upper face of the table is covered with a rubber-like mat (2) into which they can be inserted easily.
  • the next fold is deposited.
  • This removal will be carried out fold by fold from the start of the table to the rear.
  • the operators placed on either side of the table, manipulate the fabric so as to stitch it on the vertical perforating elements in the same places as on the first fold.
  • This operation will be repeated up to a length of fabric corresponding to the length of the placement that we want to perform.
  • the depositing surface is no longer “smooth" and it is no longer possible to pull fabric directly from this table, which will not fail to catch on the perforating elements (11) and thus deteriorate. It is to avoid this drawback that the strip of material of Mylar or similar type (7) is used, which one will choose for its lightness and its resistance to tearing.
  • the belts (10) move at the same time as the main carriage on which they are hooked and drive the free end of the strip (7), which thus remains always taut.
  • the position of the strip (7) is such that it passes above the ends of the perforating elements 11 when the latter are planted in the rubber mat (2).
  • the strip (7) will slide over the ends of the perforating elements without deteriorating (hence the wise choice to make for the material of this sheet).
  • the fabric, when it has been hooked by the clamp (12), thus rests on the continuous smooth surface which constitutes the band (7).
  • the mattress does not handle handling well, several solutions can be implemented in order to make the different folds inseparable from each other, with, however, the disadvantage of slightly lengthening the work cycle.
  • the first solution is to use simple circular self-adhesive paper pads on both sides. Each time the fabric has been stitched on the needles, we add just where the needle is located a self-adhesive patch, which is threaded on the needle and glued by pressure on the fabric. When we come to put the next fold, there will be gluing of the two folds in this place. When the needles are removed, the different folds will be glued together. These pellets are made of a flexible material and if they happened to be on the passage of the blade during cutting, they would be cut without problem.
  • the other solution is to use thumbtacks with a self-adhesive head and which have the ability to be able to fit into each other. As soon as the first fold of fabric has been applied, these pins are placed in the same way as the needles. They stay in place thanks to their self-adhesive head. When laying the following folds of fabric, we just fit a new pushpin on the one already in place and so on. This solution saves time since there is no need to remove the needles once all the folds of fabric have been placed. On the other hand, it is no longer necessary to use a rubbery mat on the table. These pins are also made of a material that can be easily cut by the cutting blade in case they are in the passage of the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Replacement Of Web Rolls (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Discharge By Other Means (AREA)

Claims (12)

  1. Verfahren zum Stapeln von mit sich wiederholenden Motiven versehenen Materialbögen vor ihrem Zuschneiden, wobei darauf geachtet wird, daß diese Motive von einem Kniff zum nächsten übereinanderliegen, umfassend nacheinander folgende Schritte:
    - ein relativ starrer Bogen wird auf einen Zuschneidetisch gelegt,
    - ein erster Kniff des Bogens mit sich wiederholenden Motiven wird von einer Vorratsvorrichtung aus zu diesem relativ starren Bogen transportiert und darauf abgelegt,
    - die optimale Anordnung aller zuzuschneidenden Teile wird aufgenommen,
    - an vorbestimmten Punkten des ersten Kniffs werden vertikale Nadelungselemente vorgesehen, um die Motive zu markieren,
    - die folgenden Kniffe werden stückweise herantransportiert, aufgelegt und befestigt, wobei durch Aufdrücken dieser Kniffe auf die bereits vorhandenen Nadelungselemente darauf geachtet wird, daß die Motive übereinanderliegen,
       dadurch gekennzeichnet, daß jeder Kniff automatisch herantransportiert und aufgelegt wird,
    - indem das freie Ende des Kniffs in eine Greifvorrichtung eingeführt wird, die quer auf einem Hauptschlitten montiert ist, welcher der Länge nach beweglich ist, und an dessen hinterem Bereich ein leichtes Förderband befestigt ist,
    - indem der Schlitten anschließend bis vor den Zuschneidetisch geführt wird, wodurch eine bestimmte Knifflänge über den Tisch gezogen und auf dem besagten leichten Förderband abgelegt wird, um es vor den Nadelungselementen zu schützen,
    - und dann durch Freigabe des freien Endes des Kniffs aus der Greifvorrichtung, wobei dieser immer noch auf dem Tisch festgehalten wird,
    - indem der Schlitten mit dem leichten Förderband zum hinteren Teil des Tischs zurückgeführt wird,
    - und schließlich, indem der Kniff quer abgeschnitten wird, um ihn aus der Vorratsvorrichtung zu lösen.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die vertikalen Nadelungselemente Nadeln sind, die nach dem Stapeln der Kniffe und vor dem Zuschneiden der Teile abgehoben werden sollen.
  3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß auf die Nadeln nach jedem Ablegen eines Kniffs selbstklebende Plättchen aufgefädelt werden, welche die Kniffe aneinander befestigen sollen.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Nadelungselemente nach jedem Ablegen eines Kniffs eingesetzt werden und vorgesehen sind, ineinandergesteckt zu werden, um die Falten aneinander zu befestigen.
  5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Nadelungselemente aus Stiften mit selbstklebendem Kopf aus einem genügend feinen Material bestehen, um beim Zuschneiden nicht hinderlich zu sein.
  6. Vorrichtung zum Stapeln von Materialbögen mit sich wiederholenden Motiven, wobei darauf geachtet wird, daß die Motive von Bogenkniff zu Bogenkniff übereinanderliegen, umfassend einen Hauptschlitten, welcher zum Zuschneidetisch der Länge nach beweglich ist, sowie ein leichtes Förderband (7), dessen Breite mindestens der der kniffe entspricht, dadurch gekennzeichnet, daß dieser Schlitten aus zwei trennbaren, beweglichen Vorrichtungen besteht, von denen eine von einem Motor (3) angetrieben wird und eine Aufnahmevorrichtung aufweist, die zur Aufzeichnung der optimierten Anordnung aller zuzuschneidenden Teile verwendet wird, und die andere (6) gezogen wird und eine quer angeordnete Greifvorrichtung (12) aufweist, welche das freie Ende der Kniffe einführen soll, wobei diese gezogene Vorrichtung (6) in ihrem hinteren Bereich an dem leichten Förderband (7) befestigt ist, das den Kniff des bemusterten Bogens bei seinem Herantransport tragen und schützen soll.
  7. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß das leichte Förderband über zwei Riemen (10), die beidseits des Tisches der Länge nach und dabei über an den Enden des Tisches angeordnete Umlenkrollen (5) laufen, gespannt gehalten wird.
  8. Vorrichtung nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß diese Riemen (10) an der gezogenen Vorrichtung (6) des Hauptschlittens befestigt sind, sich mit ihm bewegen und dabei das freie Ende des leichten Förderbands (7), das den abzulegenden Kniff trägt, mitnehmen.
  9. Vorrichtung nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß die gezogene Vorrichtung (6) des Hauptschlittens außerdem eine Zuschneidevorrichtung aufweist, welche die aufeinanderfolgenden Kniffe nach ihrem Ablegen von der Vorratsvorrichtung trennen soll, wobei sich die Zuschneidevorrichtung bezüglich der gezogenen Vorrichtung quer bewegt.
  10. Vorrichtung nach einem der Ansprüche 6 bis 9, dadurch gekennzeichnet, daß die vom Hauptschlitten trennbaren Vorrichtungen mittels einer elektromechanischen Befestigungsvorrichtung (15) verbunden werden.
  11. Vorrichtung nach einem der Ansprüche 6 bis 10, dadurch gekennzeichnet, daß sie eine Vorratsvorrichtung aufweist, die vorgesehen ist, bemustertes Material praktisch ohne Spannung in Bögen abzugeben.
  12. Vorrichtung nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß das leichte Förderband (7) vorzugsweise aus Mylar besteht.
EP90400568A 1989-03-16 1990-03-01 Verfahren und Vorrichtung zum Auslegen von mit Schablonen versehenen Materialbahnen zum automatischen Anpassen Expired - Lifetime EP0389319B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8903493A FR2644484B1 (fr) 1989-03-16 1989-03-16 Procede pour empiler plusieurs feuilles de matiere ayant des motifs repetitifs, tout en respectant la superposition des motifs d'une feuille a l'autre et dispositif pour sa mise en oeuvre
FR8903493 1989-03-16

Publications (2)

Publication Number Publication Date
EP0389319A1 EP0389319A1 (de) 1990-09-26
EP0389319B1 true EP0389319B1 (de) 1994-12-07

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Application Number Title Priority Date Filing Date
EP90400568A Expired - Lifetime EP0389319B1 (de) 1989-03-16 1990-03-01 Verfahren und Vorrichtung zum Auslegen von mit Schablonen versehenen Materialbahnen zum automatischen Anpassen

Country Status (8)

Country Link
US (1) US5024429A (de)
EP (1) EP0389319B1 (de)
JP (1) JPH02277879A (de)
AT (1) ATE114936T1 (de)
CA (1) CA2011993A1 (de)
DE (1) DE69014689T2 (de)
ES (1) ES2069034T3 (de)
FR (1) FR2644484B1 (de)

Families Citing this family (10)

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Publication number Priority date Publication date Assignee Title
DE8908720U1 (de) * 1989-07-18 1989-09-07 Carl Schmale GmbH & Co KG, 4434 Ochtrup Querschneidevorrichtung für bahnförmiges Gut, insbesondere Textilbahnen
US5447296A (en) * 1993-05-26 1995-09-05 Cox; Michael A. Cloth spreading system
FR2719403B1 (fr) * 1994-04-27 1996-07-19 Lectra Systemes Sa Procédé de numérisation et découpe de coupons ayant des formes non répétitives.
US5501148A (en) * 1994-09-15 1996-03-26 The Charles Stark Draper Laboratory Inc. Automatic sheet printing and alignment system
US6152438A (en) * 1997-07-23 2000-11-28 Morgan; Wade Floor supported fabric spreading machine
DE10245730A1 (de) * 2002-10-01 2004-04-22 Schuler Held Lasertechnik Gmbh & Co. Kg Vorrichtung und Verfahren zum Schneiden von Textilien
US20150122864A1 (en) * 2013-11-06 2015-05-07 Shenzhen China Star Optoelectronics Technology Co., Ltd. Cutting device for cutting liquid crystal substrate and method for adjusting knife pressure thereof
CN104444527B (zh) * 2014-10-30 2016-11-23 四川成峰机械有限公司 一种纸板出料结构
CN110184801B (zh) * 2019-06-27 2021-08-20 芜湖昊顺服饰有限公司 一种高分子服装的裁剪伺服装置
CN110786582A (zh) * 2019-12-16 2020-02-14 九江市冰能量服饰织造有限公司 一种快速裁剪的服装生产加工用打板装置

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Publication number Priority date Publication date Assignee Title
BE795702A (fr) * 1972-02-22 1973-06-18 Royon Rene Dispositif de reglage pour l'enroulement et le deroulement de materiaux a carreaux
BE859478A (fr) * 1977-10-07 1978-02-01 Desmed & Meynart Ets Table pour la preparation a la coupe de panneaux de tissus
DE2903473C2 (de) * 1979-01-30 1985-06-13 Gustav Georg Veith GmbH & Co KG, 8201 Frasdorf Verfahren und Vorrichtung zum mustergerechten Stapeln von Stoffbahnen
US4385956A (en) * 1981-03-19 1983-05-31 Gerber Garment Technology, Inc. Apparatus and methods for spreading sheet material
FR2579963A1 (en) * 1985-04-04 1986-10-10 Lectra Systemes Sa Device for padding and for cutting filliform materials
SE453287B (sv) * 1985-06-03 1988-01-25 Bloms Konfektionsmaskiner Ab Sett att overfora tyg till ett leggbord och anordning for att genomfora settet
ES555177A1 (es) * 1986-05-21 1987-10-01 Investronica Sa Procedimiento de disposicion de tejidos con dibujo para cosido y corte automaticos.
SU1395577A1 (ru) * 1986-06-28 1988-05-15 Уфимский завод резиновых технических изделий им.М.В.Фрунзе Способ настилани и раскро эластичных полотен

Also Published As

Publication number Publication date
FR2644484A1 (fr) 1990-09-21
DE69014689D1 (de) 1995-01-19
DE69014689T2 (de) 1995-06-14
US5024429A (en) 1991-06-18
EP0389319A1 (de) 1990-09-26
ATE114936T1 (de) 1994-12-15
JPH02277879A (ja) 1990-11-14
ES2069034T3 (es) 1995-05-01
FR2644484B1 (fr) 1991-07-12
CA2011993A1 (en) 1990-09-16

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