EP0356767A1 - Dispositif d'épissure de fils et procédé pour la préparation des extrémités des fils - Google Patents

Dispositif d'épissure de fils et procédé pour la préparation des extrémités des fils Download PDF

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Publication number
EP0356767A1
EP0356767A1 EP89114610A EP89114610A EP0356767A1 EP 0356767 A1 EP0356767 A1 EP 0356767A1 EP 89114610 A EP89114610 A EP 89114610A EP 89114610 A EP89114610 A EP 89114610A EP 0356767 A1 EP0356767 A1 EP 0356767A1
Authority
EP
European Patent Office
Prior art keywords
thread
tube
splicing device
thread splicing
fluid
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
EP89114610A
Other languages
German (de)
English (en)
Other versions
EP0356767B1 (fr
Inventor
Peter Artzt
Heinrich Preininger
Gerhard Egbers
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
Schubert und Salzer Maschinenfabrik 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6361255&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0356767(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Rieter Ingolstadt Spinnereimaschinenbau AG, Schubert und Salzer Maschinenfabrik AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Publication of EP0356767A1 publication Critical patent/EP0356767A1/fr
Application granted granted Critical
Publication of EP0356767B1 publication Critical patent/EP0356767B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H69/00—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device
    • B65H69/06—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing
    • B65H69/061—Methods of, or devices for, interconnecting successive lengths of material; Knot-tying devices ;Control of the correct working of the interconnecting device by splicing using pneumatic means
    • B65H69/063—Preparation of the yarn ends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the invention relates to a thread splicing device for the knot-free connection of threads with a thread splicing chamber and a tube through which fluid flows, at a distance from the thread splicing chamber, for receiving a thread end for its preparation for the splicing process, and a method for thread end preparation in such a thread splicing device.
  • connection of thread ends by splicing requires that the preparation of the thread ends is carried out carefully in order to obtain a good quality of the connection.
  • the thread end must be substantially free of twists over a certain length, so that it can be easily connected to a second thread end, which is also essentially free of twists, in the spinning device.
  • the preparation of the thread ends is carried out in devices in which the thread ends are exposed to a fluid flow which grips the thread ends transversely to the thread longitudinal axes with the help of the pressure or suction force which arises in the process and swirls them in such a way that the rotation is dissolved in the thread ends.
  • Another known device proposes a more intensive mechanical and pneumatic loading of the thread ends for the same purpose in order to dissolve, clean and spread the thread ends in individual fibers. This is done by the fact that the compressed gas flowing obliquely to the longitudinal direction of the individual fibers with simultaneous beating and tearing, pulling, pulling, mechanical and pneumatic loading in the direction of the thread end causes the thread end to vibrate. This process is relatively complex. In addition, there is a risk that this intensive violent dissolution of the thread ends will damage the individual fibers and are no longer suitable for a good splice connection.
  • a particular problem for splicing is represented by the threads produced by new spinning processes. These are in particular threads produced by the open-end rotor spinning process, fiber wound spinning processes or similar new spinning processes. With this type of yarn production there is no uniform twist in the thread. In addition, these threads often have wraps through individual fibers (so-called abdominal bandages) that are extremely difficult to dissolve. The previously known splicing methods have proven to be unsuitable for this, which is why it is still a problem today to splice such yarns.
  • the tube has a rough inner surface that touches the thread end, and that the tube is turbulently flowed through by a fluid and the thread end is struck by the turbulent flow against the structured inner surface of the tube until that Thread end is rotation-free.
  • the inner surface of the tube is roughened by cording.
  • An irregular arrangement of the edges facilitates the untwisting of the thread, since the thread cannot so easily nestle into valleys in the structure. If the structure is sharp-edged, unscrewing the thread end is also made easier.
  • the roughly structured inner surface of the tube is arranged axially and / or on a part of the circumference. As a result, a precisely defined zone of the thread end, which is to be opened, is predetermined. If the tube has an inner diameter that is several times the thread size, then it is safe to insert the thread end into the tube as well as sufficient movement of the thread in the tube. If the inside diameter corresponds to a maximum of half the length of the thread end protruding into the tube, very good results of unscrewing the thread end can be achieved.
  • a quick adjustment to different lengths of the thread end to be opened can be achieved by a displaceable arrangement of the tube in the axial direction.
  • a thread insertion zone with a diameter increasing towards the end of the tube is arranged, for example in the form of a conical widening, at the end of the tube facing the thread splicing chamber. If the surface of the thread insertion zone is also smooth, the insertion of the thread end into the tube is facilitated.
  • a slot which is arranged in the thread insertion zone in the direction of the longitudinal axis of the tube, also facilitates the insertion of the thread end.
  • the tube is designed such that it can be inserted alternately into the thread splicing device, it is advantageously ensured that tubes with different characteristics of the structure of the inner surface can be adapted to different thread qualities.
  • the tube is rotated in such a way that the thread is inserted once at one end of the tube and after rotating the tube by 180 ° at the other end.
  • a rotatable part is arranged on the thread splicing device, in which at least one tube is arranged, the tube can be carried out quickly and easily for cleaning purposes or for mutual use.
  • tubes with inner surfaces of different strengths of roughness are arranged in the rotatable part, it is advantageously possible to use the appropriate tube for different thread qualities. This is particularly advantageous on machines on which different thread qualities are produced. The same applies to tubes arranged in the rotatable part with inner surfaces with different zones of roughness.
  • the method according to the invention consists in that a fluid flows through the tube turbulently and the end of the thread is knocked against the structured inner surface of the tube by the turbulent flow, so that the end of the thread becomes free of rotation.
  • the advantage here is that even stubborn twists, such as occur with twists or rotor yarns with belly bandages, are relatively gently resolved by the striking contact of the structured inner surface.
  • the length of the tube can be optimally utilized in an advantageous manner.
  • the introduction of the thread end into the tube is made considerably easier compared to a lateral introduction of the fluid into the tube, since the thread end is blown into the tube and is not sucked. Moreover, such a flow through the tube results in a much simpler construction of the thread splicing device.
  • FIG. 2 shows a further embodiment of the tube 1 according to the invention.
  • An advantageous thread insertion groove 5 is arranged on the thread insertion bevel 4, into which the thread end 11 lies before it reaches the tube 1.
  • This thread insertion groove 5 stabilizes the thread end 11 due to its groove-shaped design and prevents lateral evasion and thus an incorrect preparation attempt.
  • a smooth zone G is initially arranged in the tube 1 of FIG. 2 following a thread insertion zone E on the inner surface 2.
  • This smooth zone G is followed by a structured zone S.
  • the structured zone S of the inner surface 2 is axially limited.
  • the length of the thread end 11 to be released from its rotation is limited.
  • the rotation is only released up to the border area between smooth and structured zone G, S.
  • a shorter length of the thread end 11 becomes of a tube 1 of FIG Rotation solved.
  • the use of different tubes 1 allows a thread splicing device 20 to be easily converted to threads of different fiber lengths, on which the length of the thread end 11 to be broken depends.
  • the exemplary embodiment of a tube 1 in FIG. 3 represents an inner surface 2 which has a boundary of the structured zone S on the circumference.
  • the smooth zone G of the inner surface 2 is located on the remaining part of the inner circumference of the tube 1.
  • 6 of the Tube 1 would be the case.
  • a combination of the arrangement of the rough inner surface 3, 6 of the tubes 1, as shown in FIGS. 2 and 3, is advantageous if a limited piece of the thread end 11 is to be gently opened, since that Thread end 11 is not constantly exposed to the rough inner surface 3, 6.
  • the structure 3 or 6 can, depending on the type of thread, be linear or spiral in the form of strips if the rough inner surface 3, 6 of the tube 1 is arranged axially and on part of the circumference of the inner surface 2 of the tube 1.
  • a structure 6 of the tube 1 in FIG. 3 is not achieved with grains 3, but rather by means of a cord on the surface.
  • the structuring of the surface is also possible with laser radiation or eroding.
  • This processing of the inner surface 2 is often less expensive and more durable than an arrangement of material on the inner surface 2.
  • a gentle untwisting of the thread end 11 is possible according to FIGS. 1 to 3, in that the structure of the inner surface 2 is chosen more or less roughly. The coarser and stronger the thread 10 and the tighter and tighter the rotation of the thread 10, the coarser, more aggressive and larger the structure on the inner surface 2 of the tube 1 must be. The mechanical load to which the thread end 11 is exposed is minimized by the appropriate choice of the structure.
  • FIG. 4 shows a top view of the tube 1, in which grains 3 are arranged on the inner surface 2. It can be seen that the sharp edges of the grains 3 protrude into the through opening of the tube 1.
  • the end of the thread 11 sticks to these sharp edges with parts of its fibers and thus, while being set into spinning movements due to the turbulent flow of fluid, dissolves the bond formed by the fibers.
  • the thread end 11 is thereby formed into a bundle of fibers with spread fibers.
  • the length of the fiber bundle is limited by the mean fiber length, since the fibers of the thread end 11 must remain bound at one end in the thread in order not to be completely removed from the thread by the fluid flow.
  • a free inner diameter D is several times the thread thickness d, and corresponds to a maximum of half the length of the thread end 11 projecting into the tube 1. This ensures that the thread end 11 has enough space for its striking movements on the one hand and the rough inner surface 3 on the other hand 6 touches with a sufficient length of the thread end 11.
  • a split version of the tube 1 is shown in a section transverse to the longitudinal axis.
  • the tube halves 1 'and 1 ⁇ are connected to each other by adhesive, screwing or clamping in the thread splicing device 20.
  • the division of the tube 1 enables the structure to be attached to the inner surface 2 of the tube 1 in a very simple manner. Both the arrangement of grains 3 and the processing of the inner surfaces 2 according to FIG. 3 are greatly simplified owing to the good accessibility. When using a detachable connection, cleaning or repair of the structure is also easier than with non-separable tubes 1.
  • a longitudinal section through the thread splicing device 20 and the tube 1 in FIG. 6 shows in one exemplary embodiment the arrangement of the tube 1 in the thread splicing device 20.
  • the tube 1 is fastened in the thread splicing device 20 in an axially steplessly adjustable manner. It is clamped here by a screw 21 which presses against the outer wall of the tube 1.
  • a distance A can be set by loosening the screw 21 and moving the tube 1 in the axial direction.
  • the distance A denotes the distance of a thread clamping point K from the tube 1, which is measured in the direction of the longitudinal axis of the tube 1.
  • the example of a thread splicing device 20 shown in FIG. 6 uses a tube 1 which can be used alternately.
  • This tube 1 has the advantage that the area in which the thread end 11 is to be opened can be substantially enlarged by turning the tube, the position of the thread insertion zone E relative to a thread splicing chamber 22 remaining essentially the same.
  • the thread insertion zone E with the thread insertion aid 5 on the inner surface 2 of the tube 1 is followed by a smooth zone G.
  • this zone G unscrewing the thread end 11 is not possible since it is less aggressive is as the structured zone S.
  • the rotation of the thread end 11, which is in contact with the structured zone S following the smooth zone G, is released when a fluid stream is blown into the tube 1.
  • the untwisted thread end 11 therefore only begins after the smooth zone G. If the tube 1 with the opening other than the one shown is directed against a nozzle 30, the structured zone S follows immediately after the thread insertion zone E, so that at same distance A, the untwisted thread end 11 becomes longer.
  • a thread insertion bevel 4 with two thread insertion grooves 5 is arranged at each end of the tube 1.
  • the two insertion grooves 5 have the effect that the thread end 11 can be placed across the opening of the tube 1 and find a guide surface in the insertion grooves 5. This ensures that the thread end 11 is blown into the tube 1 and not laterally next to the tube 1.
  • the conical surfaces of the thread insertion bevels 4 additionally reinforce this effect. Particularly in the case of arrangements in which the fluid flows in near the tube 1, it may be sufficient if only one of the two thread insertion aids, thread insertion slope 4 or thread insertion groove 5, is arranged on the tube 1 or the thread splicing device 20.
  • the nozzle 30 is arranged in FIG. 6 in the axial extension of the tube 1. Fluid, preferably air, is blown into the tube 1 through the nozzle 30. The fluid flows through the tube 1 and is set into a turbulent flow by the sharp-edged structure of the inner surface 2 of the tube 1, in which the thread end 11 is brought into a striking movement. The thread end 11 thereby strikes the aggressive structure of the inner surface 2 of the tube 1 and thus frees itself from the looping fibers. It is also possible that the nozzle 30 is arranged at the other end of the tube 1 and is designed as a suction air nozzle instead of, for example, a compressed air nozzle. However, the fluid is always introduced at one end of the tube 1 and flows through the entire tube 1 along its axis.
  • a more or less strong fluid pressure is selected depending on the strength of the thread 10 to be opened and / or on the strength of the rotation of the thread 10. This achieves the advantage of unscrewing the thread end 11 as gently as possible.
  • a clamp 23 on the thread splicing chamber 22 presses on the thread 10 at a clamping point K. This ensures that the thread end 11 is not inserted further into the tube 1 than intended by the fluid flow from the nozzle 30.
  • FIG. 7 shows an exemplary embodiment in which two tubes 1a and 1b are arranged on a rotatable part 24.
  • the rotatable part 24 can be brought into two different working positions, in which either the tube 1a or the tube 1b can receive the thread end 11.
  • the nozzle 30 is arranged in the axial alignment of the tube 1a, so that the thread end 11 is blown into the tube 1a by the fluid flow of the nozzle 30.
  • the inner surface 2 of the tube 1a is completely structured, while the structure of the inner surface 2 of the tube 1b is axially limited.
  • the tube 1a can be exchanged with the tube 1b by rotating the rotatable part 24 about an axis of rotation 25 in the direction of the arrow. After the rotation of the rotatable part 24 by 180 ° , the fluid flow no longer flows through the tube 1a but rather through the tube 1b.
  • the two tubes 1a and 1b can differ both in the arrangement of the structure 3a, 3b, and in the thickness of the structure 3a, 3b, and thereby respond to the requirements of preparing the thread ends of different threads 10 as gently as possible.
  • the adjustment of the rotatable part 24 can be done both manually and e.g. mechanically with a service unit.
  • the thread splicing device 20 of FIG. 8 only one tube 1 is arranged in the rotatable part 24.
  • the axis of rotation 25 is arranged perpendicular to the longitudinal axis of the tube 1 and cuts it in the middle. If the rotatable part is rotated by 180 ° , it is possible in a simple manner to bring the tube 1 into mutual use and thus to vary the length of the thread end 11 to be released.
  • a control device 31 which influences the inflow of the fluid, is connected upstream of the nozzle 30.
  • the inflow of the fluid from a pressure vessel 32 into the nozzle 30 is stopped after each dissolution process and is only permitted again when the dissolution process is repeated.
  • the control device 31 limits the fluid flow per thread end preparation to a time of less than 30 ms.
  • the flow of fluid depends on the strength of the rotation of the thread end 11. If the rotation of the thread end 11 is strong and / or non-uniform, ie if there are strong abdominal bands or if the rotation is both Z- and S-shaped, then a longer flow-through time is a dissolution of rotation than in the case of a loose rotation.
  • the result is the sudden impact of the fluid on the thread end 11 and the resulting acceleration peaks, by which the thread end 11 with great force against the sharp-edged structure of the Inner surface 2 of the tube 1 is thrown, a very good resolution of the thread end 11 and its rotation.
  • FIG. 9 shows a section through a thread splicing device 20, in which two tubes 1a and 1b are arranged in the rotatable part 24.
  • the axis of rotation 25 of the rotatable part 24 is arranged parallel and centrally to the longitudinal axes of the tubes 1a and 1b.
  • the invention is not restricted to the exemplary embodiments shown and described. So it is e.g. possible to arrange a number of tubes on a belt or chain, and to move the most suitable tube automatically or manually to the location of the fluid flow. It is also possible to use a microprocessor which, according to the program, selects the most suitable tube, the most suitable fluid inflow duration and the inflow profile depending on the thread quality.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
EP89114610A 1988-08-20 1989-08-08 Dispositif d'épissure de fils et procédé pour la préparation des extrémités des fils Expired - Lifetime EP0356767B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3828319A DE3828319A1 (de) 1988-08-20 1988-08-20 Fadenspleissvorrichtung zum knotenfreien verbinden von faeden und verfahren zur fadenendenvorbereitung
DE3828319 1988-08-20

Publications (2)

Publication Number Publication Date
EP0356767A1 true EP0356767A1 (fr) 1990-03-07
EP0356767B1 EP0356767B1 (fr) 1992-03-25

Family

ID=6361255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89114610A Expired - Lifetime EP0356767B1 (fr) 1988-08-20 1989-08-08 Dispositif d'épissure de fils et procédé pour la préparation des extrémités des fils

Country Status (4)

Country Link
US (1) US5175983A (fr)
EP (1) EP0356767B1 (fr)
JP (1) JPH02163273A (fr)
DE (2) DE3828319A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2527108B2 (ja) * 1992-06-10 1996-08-21 村田機械株式会社 スプライサ―の解撚ノズル
DE4222662B4 (de) * 1992-07-10 2005-12-08 Saurer Gmbh & Co. Kg Vorrichtung zum Vorbereiten von Fadenenden
DE4224633C2 (de) * 1992-07-25 2002-07-18 Schlafhorst & Co W Fadenspleißvorrichtung für schwer spleißbare Garnarten
IT1299006B1 (it) 1998-04-02 2000-02-07 Mesdan Spa Dispositivo per la preparazione dell'estremita' di filo alla giunzione con un apparecchio per la giunzione pneumatica senza nodo di fili e
DE10202781A1 (de) * 2002-01-25 2003-07-31 Schlafhorst & Co W Vorrichtung zum pneumatischen Verbinden von Garnen
DE60216070T2 (de) * 2002-07-24 2007-06-28 Murata Kikai K.K. Fadenspleisser
DE102006036713A1 (de) * 2006-08-05 2008-02-07 Rieter Ingolstadt Spinnereimaschinenbau Ag Verfahren zum Vorbereiten eines abgelängten Garnendes sowie Textilmaschine mit einem Garnendenpräparator zur Durchführung des Verfahrens
JP2011037626A (ja) * 2009-08-18 2011-02-24 Murata Machinery Ltd 糸継装置及びそれを備えた繊維機械
CH709953A1 (de) * 2014-07-30 2016-02-15 Rieter Ag Maschf Verfahren zum Betrieb einer Luftspinnmaschine.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572025A (en) * 1969-06-30 1971-03-23 Techniservice Corp Strand splicer
DE3143263A1 (de) * 1981-10-31 1983-05-11 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum partiellen strecken und parallelisieren der fasern eines fadens oder fadenendes
GB2113735A (en) * 1982-01-21 1983-08-10 Reiners Verwaltungs Gmbh A compressed-gas splicing head
FR2521539A1 (fr) * 1982-02-18 1983-08-19 Murata Machinery Ltd Dispositif de detorsion d'extremite de fil pour appareil pneumatique de raccordement de fil
DE3417367A1 (de) * 1983-05-10 1984-11-15 Murata Kikai K.K., Kyoto Fadenspleissvorrichtung fuer gesponnene faeden
DE3708303A1 (de) * 1986-04-05 1987-10-08 Schweiter Ag Maschf Verfahren und anlage zum verbinden von zwei fadenenden durch spleissen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2851252A1 (de) * 1978-11-27 1980-06-12 Schlafhorst & Co W Verfahren und vorrichtung zum verbinden eines oberfadens mit einem unterfaden
JPS55101560A (en) * 1979-01-23 1980-08-02 Murata Mach Ltd Method and apparatus for joining spum yarns
DE3235443A1 (de) * 1981-03-26 1984-03-29 Murata Kikai K.K., Kyoto Vorrichtung zum spleissen gesponnener faeden
JPS5842567A (ja) * 1981-09-03 1983-03-12 Murata Mach Ltd 紡績糸の糸継装置
DE3151270A1 (de) * 1981-12-24 1983-07-07 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum knotenfreien verbinden zweier faeden
DE3326966C2 (de) * 1983-07-27 1985-09-26 W. Schlafhorst & Co, 4050 Mönchengladbach Druckluft-Fadenspleißvorrichtung
DE3418780A1 (de) * 1984-05-19 1985-11-21 Schubert & Salzer Maschinenfabrik Ag, 8070 Ingolstadt Verfahren und vorrichtung zum vorbereiten eines abgelaengten fadenendes zum wiederanspinnen einer offenend-spinnvorrichtung
EP0162367B2 (fr) * 1984-05-19 1993-08-04 Rieter Ingolstadt Spinnereimaschinenbau AG Procédé et dispositif pour la préparation de l'extrémité de fil pour la remise en route d'une machine à bout libéré
DE3518316A1 (de) * 1985-05-22 1986-11-27 W. Schlafhorst & Co, 4050 Mönchengladbach Druckluft-fadenspleissvorrichtung
DE3640217A1 (de) * 1986-11-25 1988-05-26 Fritz Stahlecker Oe-rotorspinnmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572025A (en) * 1969-06-30 1971-03-23 Techniservice Corp Strand splicer
DE3143263A1 (de) * 1981-10-31 1983-05-11 W. Schlafhorst & Co, 4050 Mönchengladbach Vorrichtung zum partiellen strecken und parallelisieren der fasern eines fadens oder fadenendes
GB2113735A (en) * 1982-01-21 1983-08-10 Reiners Verwaltungs Gmbh A compressed-gas splicing head
FR2521539A1 (fr) * 1982-02-18 1983-08-19 Murata Machinery Ltd Dispositif de detorsion d'extremite de fil pour appareil pneumatique de raccordement de fil
DE3417367A1 (de) * 1983-05-10 1984-11-15 Murata Kikai K.K., Kyoto Fadenspleissvorrichtung fuer gesponnene faeden
DE3708303A1 (de) * 1986-04-05 1987-10-08 Schweiter Ag Maschf Verfahren und anlage zum verbinden von zwei fadenenden durch spleissen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 11, no. 316 (M-631)(2763) 15 Oktober 1987,& JP-A-62 100 376 09 Mai 1987, *

Also Published As

Publication number Publication date
US5175983A (en) 1993-01-05
DE58901026D1 (de) 1992-04-30
DE3828319A1 (de) 1990-02-22
DE3828319C2 (fr) 1992-03-05
JPH02163273A (ja) 1990-06-22
EP0356767B1 (fr) 1992-03-25

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