EP0174568B1 - Procédé d'obturation de la fente entre les extrémités des plaques d'impression en creux tendues sur un cylindre de forme - Google Patents
Procédé d'obturation de la fente entre les extrémités des plaques d'impression en creux tendues sur un cylindre de forme Download PDFInfo
- Publication number
- EP0174568B1 EP0174568B1 EP85110932A EP85110932A EP0174568B1 EP 0174568 B1 EP0174568 B1 EP 0174568B1 EP 85110932 A EP85110932 A EP 85110932A EP 85110932 A EP85110932 A EP 85110932A EP 0174568 B1 EP0174568 B1 EP 0174568B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gap
- cover element
- pressure
- printing plate
- gravure printing
- 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
Links
- 238000000034 method Methods 0.000 title claims description 36
- 238000007639 printing Methods 0.000 title description 35
- 238000007646 gravure printing Methods 0.000 claims abstract description 40
- 150000001875 compounds Chemical class 0.000 claims abstract description 39
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- 238000003825 pressing Methods 0.000 claims description 6
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- 238000007789 sealing Methods 0.000 description 42
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- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1293—Devices for filling up the cylinder gap; Devices for removing the filler
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N3/00—Preparing for use and conserving printing surfaces
Definitions
- the invention relates to a method for closing the gaps which result between the end or edge regions of gravure printing plates when these are clamped onto a forme cylinder of a sheet-fed or roller rotogravure printing machine.
- the gap to be closed is covered by a cover element by placing this cover element on the end sections of the gravure printing plate and pressing the cover element against the surface of the gravure printing plate flush with the adjacent surfaces of the gravure printing plate, the resulting gap cavity is filled with a hardenable sealing compound and after curing the sealing compound removes the cover element.
- the forme cylinder is generally provided with a groove running parallel or also obliquely to the forme cylinder axis, into which the intaglio printing plate is hung and held with at least one folded end.
- Corresponding clamping cylinders are described for example in DE-A-25 45 124, DE-A-26 33 445 and DE-A-30 49 143.
- the resulting gap between the two ends of the gravure printing plate must be closed in a suitable manner for the printing process in order to prevent the penetration and splashing of printing ink and to ensure that the doctor blade runs properly.
- a hardenable sealing compound preferably made of a plastic
- the gap area between the plate ends has been subjected to surface treatment, for example by grinding, so that in the area of the plate ends a continuous, even surface was created (Deutscher Drucker, No. 41 / 6-11-1975, pp. 17 to 22).
- the work involved is relatively large and requires manual skills.
- tension cylinders therefore do not have an ideal line of curvature in the area of the suspension groove - over the entire or only part of the axial length, but rather more or less pronounced shoulders are shown here.
- mechanical post-treatment of the closed gap may also be necessary according to the method of EP-A-118 866.
- a separate operation is necessary for the gap closure according to the previously known and proposed methods.
- the object of the present invention was to further improve the known and proposed methods for closing the gaps between the end or edge regions of rotogravure plates clamped on forme cylinders of rotogravure printing machines, so that a method results which is universally applicable with simple feasibility and yet at the same time high quality of the gap closure guarantees and ensures.
- This object is achieved by the invention solved a method of the type mentioned in the introduction, in which a cover element with at least one surface deformable under the contact pressure is used, this surface of the cover element when pressing the cover element against the surface of the gravure printing plate in that lying on the end or edge portions of the gravure printing plate and the Gap covering surface area is adapted to the surface contour in the gap area under deformation.
- the invention accordingly relates to a method for closing the gaps between the end or edge regions of gravure printing plates clamped on forme cylinders, in which the gap by means of a cover element by placing this cover element on the end or edge portions of the gravure printing plate and pressing the cover element onto the surface the intaglio plate with the adjacent surface sections of the intaglio plate, the resulting gap cavity is filled with a hardenable sealing compound, and after the sealing compound has hardened, the cover element is removed.
- the method according to the invention is characterized in that a cover element with at least one surface deformable under the contact pressure is used, this surface of the cover element when the cover element is pressed against the surface of the gravure printing plate in the gap lying on the end or edge portions of the gravure printing plate covering surface area is deformed to the surface contour in the gap area.
- the measures according to the invention make it possible to close any gap in the surface area of gravure printing plates clamped on forme cylinders in a simple manner well and permanently, without mechanical post-treatment being necessary, irrespective of whether irregularities in the surface contour and in the radial and / or axial direction in the gap area Deviations from the ideal surface line of the forme cylinder occur.
- the method according to the invention can be used with the same advantage in stretched gravure winding plates, where there is only an axially extending gap across the entire cylinder width between the ends of the plate, as well as in cylinders on which several gravure plates are stretched behind and next to each other and are this also results in gaps to be closed in the circumferential line between the lateral edge regions of the individual plates.
- cover elements used according to the invention can be designed in different ways. It is essential that at least the surface or the surface area of the cover element, which covers the gap of the rotogravure plate, is deformable under pressure and thus adaptable to the contour in the gap area.
- the cover element as a whole must be so stable that it can be sufficiently firmly pressed onto the surface of the rotogravure plate to ensure that the covered gap cavity is sealed.
- Transparent cover elements are particularly advantageous, since this greatly facilitates inspection when the gap cavity is filled with the hardenable sealing compound and when this sealing compound hardens; when using light-curable sealing compounds, the sealing compound can also be irradiated with actinic light for curing without removing the covering element through it.
- the cover elements can be of solid design, for which, for example, cross-sectionally round or square strands or other profile pieces which cover the gap between the end or edge regions of the stretched intaglio printing plates in sufficient width and over the entire length can be considered, made of a deformable material under pressure, such as Silicone rubber, foams or the like exist.
- hollow bodies are considered as cover elements which contain a pressure-generating and -transmitting medium, which is optionally connected to a pressure medium source.
- cover elements are, for example, tubes, balloons or the like, or also multi-sided rigid, for example box-shaped elements covering the gap, in which only the surface resting on the end or edge portions of the gravure printing plate and covering the gap from a deformable under pressure Material, e.g. a rubber-like or elastomeric material or in particular a film that can be changed in its tension state.
- the two folded ends 3 of the gravure printing plate 2 are hung over the beak edges 4 in the groove 5 of the forme cylinder 1.
- the groove 5 for hanging the intaglio printing plate 2 runs either parallel or at a slight angle, for example from about 2 to 5 ', to the forme cylinder axis and can - as shown in the example - widen from the cylinder surface to the cylinder center, so that the folded ends 3 of the gravure printing plate 2 are hooked into the groove 5 at an acute angle.
- the side surfaces of the groove 5 can also run parallel to one another either perpendicularly or obliquely with respect to the cylinder surface, so that the ends 3 of the gravure printing plate 2 can also be folded vertically or at another angle.
- a cover element 8 is placed on the end sections 7 of the gravure printing plate 2, which lies on the end sections 7 of the gravure printing plate 2 and covers the gap 6 in its entire axial length .
- the cover element 8 is pressed against the surface of the gravure printing plate during the closing of the gap 6, for example with the aid of a hold-down device not shown in the drawing.
- FIG. 1 illustrates the use of a rigid, box-shaped cover element 8, the surface 9 of which lies on the end sections 7 of the intaglio printing plate 2 and is formed from a material that can be deformed under pressure.
- a rigid, box-shaped cover element 8 the surface 9 of which lies on the end sections 7 of the intaglio printing plate 2 and is formed from a material that can be deformed under pressure.
- other films in particular made of plastic, are also considered, which are movably clamped onto the box-shaped cover element 8 and are advantageously changeable in their tension state.
- the films stretched in this way can be tensioned tightly by pressure from the inside and / or outside, thereby adapting and pressing on the surface contours in the area of the gap 6 with simultaneous formation of a tight and flush cover with the end regions 7 of the intaglio printing plate 2 can be.
- the cavity 10 of the cover element 8 is filled with a pressure-generating and transmitting medium and is advantageously connected to a pressure medium source 14 via a feed line 11.
- a pressure medium source 14 via a feed line 11.
- liquids such as water, oil or the like, but in particular air or other gases, are suitable as the pressure-generating and transmitting medium.
- FIG. 2 schematically shows the covering of the gap 6 between the end sections 7 of a gravure printing plate 2 clamped on a forme cylinder 1 by means of a completely deformable cover element 8.
- the cover element 8 is a hollow body, for example a hose, the cavity 10 of which is filled with a pressure-transmitting medium, for example a liquid such as water or oil, but in particular with air or another gas.
- the cover element 8 is pressed by means of a suitable pressure piece 12 covering the gap 6 onto the end sections 7 of the rotogravure plate 2 that is clamped.
- the pressure piece 12 is, for example, very advantageously an elastic, flexible plate, which is preferably transparent and is made, for example, of plastic.
- the contact pressure with which the cover element 8 is pressed by the pressure piece 12 onto the surface of the clamped gravure printing plate is largely determined by the internal pressure of the pressure-transmitting medium in the cavity 10 of the cover element 8 and the desired shape for the closed gap surface.
- the cavity 10 of the tubular cover element 8 similar to that shown in FIG. 1, can be connected to a pressure medium source via a supply line, so that in this case the internal pressure of the cover element 8 is also controlled and thus further control of the adaptation of the cover element 8 the surface contours in the area of the gap 6 is possible by specifically setting the desired surface line of the closed gap.
- the gap cavity formed after covering the gap 6 with the cover element 8 is filled with a hardenable sealing compound.
- the sealing materials used here are the materials which are customary and known per se for the gap closure and which, when cured, are resistant to the printing ink solvents.
- these advantageously include hot melt adhesives based on, for example, polyvinyl acetate, polyamide, polyester or thermoplastic plastics, such as polyolefins, styrene-butadiene and / or isoprene block copolymers etc.
- thermosetting or, in particular, light-curable reactive resins such as epoxy resins , Acrylate resins, isocyanate resins, silicone resins, UP resins, etc.
- Flowable, solvent-free photopolymerizable mixtures based on photopolymerizable monomers, at least one polymeric binder, a photoinitiator, and, if appropriate, fillers and other additives are also very inexpensive to use as sealing compounds.
- the material for the surface of the covering element 8 covering the gap 6 is chosen with regard to the hardenable sealing compound used so that after the sealing compound has hardened, the covering element 8 can easily be lifted off the surface of the gravure printing plate 2 and the hardened gap filling.
- the cover element 8 can be surface-coated with a release agent, for example siliconized, or it can be between the end sections 7 the intaglio printing plate 2 and the surface of the cover element 8 lying thereon also a thin separating film.
- the groove cavity 5 In order to prevent the hardenable sealing compound from penetrating into the interior of the forme cylinder 1, in particular into any clamping devices and elements, the groove cavity 5 must be directed radially inwards, i.e. towards the cylinder center, tightly sealed. This closure of the groove cavity 5 radially inward can be achieved and ensured by purely constructive features of the forme cylinder 1, as is indicated schematically in FIG. 1.
- a sealing element 13 can be used to close off the groove cavity 5 radially inwards the groove cavity 5 is inserted and extends over its entire length.
- This sealing element 13 can be compact or, as shown in the drawing, a hollow body, preferably round in cross section, e.g. a hose made of silicone rubber. If hollow bodies of this type are used as the sealing element 13, they can be connected to a pressure medium source via a further feed (not shown in the drawing) and can thus be inflatable. As a result, both a secure and reliable seal can be achieved and any shrinkage of the filling material that occurs during curing can be compensated for.
- the sealing element 13 which is designed as a hollow body, this can be switched into a pressurized heating or coolant circuit in order, depending on the filling material used, to additionally determine the flow behavior of the filling material when filling the gap 6 and / or or to be able to control and influence the curing of the filling material after the gap 6 has been filled.
- the gap cavity covered with the cover element 8 is filled with the hardenable sealing compound expediently from the end face of the forme cylinder via one or more feeds arranged in its bearing troughs.
- the flowable, hardenable sealing compound is injected into the gap cavity by means of a metering device.
- the flowable, curable sealing compound can also be introduced through a hollow body 13 lying in the groove cavity 5, which is provided along the gap 6 with one or more small openings opening into the cavity of the gap 6. This ensures a fast, even distribution of the sealing compound, which is important for a perfect gap seal.
- the sealing compound is introduced into the cavity of the covered gap 6 through an opening which is located approximately in the middle of the hollow body 13 in relation to its length.
- a pressure that may be necessary in the hollow body 13 can be generated in the hollow body 13 by means of the sealing compound in order to achieve a secure seal of the groove cavity 5 radially inward toward the cylinder center.
- the air in the gap is displaced by both ends of the gap, which are only acted upon by the sealing compound at the end of the injection process.
- the pressure with which the gap 6 covering surface of the cover element 8 is pressed against the end sections 7 of the gravure printing plate 2 is of course greater than the pressure exerted on the cover element 8 by the injection of the hardenable sealing compound. This ensures that the gap 6 is covered flush and tight to the outside. Characterized in that the surface of the cover element 8 covering the gap 6 is deformable under pressure, it adapts to the surface contours in the gap area. In the case of solid cover elements 8, the material for the surface of the cover element resting on the end sections of the intaglio printing plate is accordingly selected such that it can be deformed under the contact pressure for the cover element and can be adapted to the surface contour in the gap area, but not by the counterpressure in the gap cavity injected, curable sealing compound is changed.
- the surface line of the gap filled with the sealing compound can be varied within certain limits and adapted to the desired shapes.
- the control of the surface of the gap 6 filled with the sealing compound is essentially determined by the internal pressure existing in the cavity 10 of the cover element 8, as can be seen in FIG. 1, very easily and simply a gap closure with fillet can be generated if the pressure in the cavity 10 of the cover element 8 is correspondingly large.
- the movable, deformable surface 9 of the cover element 8 is not only pressed firmly and flush onto the end sections 7 of the intaglio printing plate 2, but at the same time is slightly curved outwards into the gap 6, so that in the gap area after sealing with the hardenable sealing compound A slightly concave surface results even in cases where the beak edges 4 of the forme cylinder 1 - as is often the case with clamping cylinders - are not exactly opposed to each other, but offset in the vertical direction, possibly to different degrees over the length of the forme cylinder axis are, with the cover elements to be used in the method according to the invention, a perfect gap closure is achieved, since these cover elements, as can be seen from FIG Adapt any desired shape to the surface contours in the gap area.
- the surface line of the closed gap can be varied in a suitable and desired manner by suitable coordination of the external contact pressure for the cover element 8 and the internal pressure of the pressure-generating and transferring medium in the cavity 10 of the cover element 8, especially when a cover element 8 is used, the cavity of which 10 is connected to an external pressure source, via which the internal pressure in the cavity 10 can be controlled separately.
- the sealing compound After the covered gap cavity has been filled with the sealing compound, it is hardened.
- the sealing compound In the case of thermoplastics, the sealing compound is cured by cooling the molten polymers, in the case of thermosetting reactive resins by suitable heat supply, the heat sources being able to be arranged inside or above the gap cavity.
- curing takes place by irradiation with actinic light, it being possible to use the radiation sources customary for actinic light.
- the radiation sources for actinic light are generally arranged above the gap filled with the sealing compound and the hardening of the sealing compound generally takes place while the cover element is still resting on the end sections of the gravure printing plate and is pressed against it
- the use of light-curable and photopolymerizable sealing compounds in particular cover elements made of transparent materials for the actinic light are used. Irradiation and hardening of the sealing compound filling the gap can thus take place through the cover element while it is still in place.
- the pressure piece (FIG. 2) used in the case of completely deformable cover elements is also transparent.
- the gaps which result when clamping gravure printing plates onto forme cylinders can be closed in a simple manner in such a way that no problems with sheet-fed and in particular also with rotary rotogravure printing, in particular with regard to doctor blade behavior, ink spraying or printing of the gap, to be watched.
- Mechanical reworking of the gap closure is unnecessary, even with forme cylinders that are not exactly worked in the area of the hanging groove.
- the surface line of the closed gap can be shaped and formed in the desired manner directly when the gap is closed without a separate operation.
- the resulting gap seal is durable and durable and allows the high print runs required in gravure printing.
- a particular advantage of the method according to the invention is also that gaps extending in the direction of the circumferential line of the cylinder, as e.g. arise when clamping several gravure plates side by side on a cylinder, can be closed easily.
- intaglio printing plates that can be clamped on the forme cylinder of a sheet-fed or roller rotogravure printing machine, in particular also intaglio printing wrap plates, can be used.
- These include the conventional gravure plates made of metal with Ballard skin as well as, in particular, the gravure plates with plastic print layers, in which a plastic layer is applied to a suitable print layer carrier, into which the ink-receiving recesses (cells), whether by mechanical engraving or Laser engraving (see e.g. DE-A-27 52 500 or DE-A-30 28 098) or photomechanically by imagewise exposure and development of a suitable light-sensitive recording material (see e.g.
- rotogravure plates are therefore to be understood both as printing plates with wells as well as blank plates in which the wells have not yet been formed.
- the gap between the plate ends can be filled again by mechanical processing or by tearing open with a wire previously inserted.
Landscapes
- Printing Plates And Materials Therefor (AREA)
- Manufacture Or Reproduction Of Printing Formes (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
- Glass Compositions (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Printing Methods (AREA)
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Liquid Crystal (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT85110932T ATE53791T1 (de) | 1984-09-08 | 1985-08-30 | Verfahren zum verschliessen des spaltes zwischen den enden von auf formzylindern aufgespannten tiefdruckplatten. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843433046 DE3433046A1 (de) | 1984-09-08 | 1984-09-08 | Verfahren zum verschliessen des spaltes zwischen den enden von auf formzylindern aufgespannten tiefdruckplatten |
DE3433046 | 1984-09-08 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0174568A2 EP0174568A2 (fr) | 1986-03-19 |
EP0174568A3 EP0174568A3 (en) | 1987-08-19 |
EP0174568B1 true EP0174568B1 (fr) | 1990-05-02 |
Family
ID=6244940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85110932A Expired - Lifetime EP0174568B1 (fr) | 1984-09-08 | 1985-08-30 | Procédé d'obturation de la fente entre les extrémités des plaques d'impression en creux tendues sur un cylindre de forme |
Country Status (8)
Country | Link |
---|---|
US (1) | US4635549A (fr) |
EP (1) | EP0174568B1 (fr) |
JP (1) | JPS6172552A (fr) |
AT (1) | ATE53791T1 (fr) |
CA (1) | CA1249119A (fr) |
DE (2) | DE3433046A1 (fr) |
DK (1) | DK164810C (fr) |
ES (1) | ES296936Y (fr) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE8703987U1 (fr) * | 1987-03-17 | 1987-06-11 | M.A.N.- Roland Druckmaschinen Ag, 6050 Offenbach, De | |
DE3710146A1 (de) * | 1987-03-31 | 1988-10-13 | Basf Ag | Verfahren zum verschliessen und/oder abdichten von oeffnungen, hohl- oder zwischenraeumen bei auf formzylindern aufgebrachten druckplatten |
DE3727115A1 (de) * | 1987-08-14 | 1989-02-23 | Basf Ag | Vorrichtung zum verschliessen des spaltes zwischen den enden einer auf einen formzylinder aufgespannten tiefdruckplatte |
DE3736180A1 (de) * | 1987-10-26 | 1989-05-03 | Basf Ag | Verfahren zum verschliessen und/oder abdichten von oeffnungen, hohl- oder zwischenraeumen bei auf formzylindern aufgebrachten druckplatten |
US4988140A (en) * | 1989-12-08 | 1991-01-29 | Prince Corporation | Visor with an electrically controlled vanity mirror cover |
US5410961A (en) | 1992-12-30 | 1995-05-02 | Fit Group, Inc. | Fountain assembly |
DE19652521C1 (de) * | 1996-12-17 | 1998-03-26 | Wifag Maschf | Kanalabdeckung für einen Zylinderkanal eines Zylinders in einer Offsetdruckmaschine |
DE19654103A1 (de) * | 1996-12-23 | 1998-06-25 | Du Pont Deutschland | Verfahren zum Kantenverkleben von photopolymerisierbaren Druckplatten oder Photopolymerdruckformen für den Flexodruck |
DE19906726B4 (de) * | 1998-03-14 | 2007-08-23 | Heidelberger Druckmaschinen Ag | Reinigungsvorrichtung in einer Druckmaschine |
FR2879184B1 (fr) * | 2004-12-15 | 2007-03-09 | Commissariat Energie Atomique | Dispositif et procede de fermeture hermetique d'une cavite d'un compose electronique. |
CN100417521C (zh) * | 2005-02-23 | 2008-09-10 | 吴广顺 | 单张纸凹印机版滚筒的制造方法 |
US20140020583A1 (en) * | 2012-07-17 | 2014-01-23 | Avi Barazani | Adaptable impression drum |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2545618A1 (de) * | 1975-10-11 | 1977-04-21 | Frankenthal Ag Albert | Formzylinder fuer tiefdruck mit einer magnetisch aufgespannten wickelplatte |
DE3300678A1 (de) * | 1983-01-11 | 1984-07-19 | Frankenthal Ag Albert | Zylinder fuer tiefdruckmaschinen |
DK159251C (da) * | 1983-03-12 | 1991-02-18 | Basf Ag | Fremgangsmaade til lukning af spalten mellem en paa et dybtrykapparats trykformcylinder opspaendt dybtrykplades ender, samt indretning ved dybtryksapparatet, til udoevelse af fremgangsmaaden |
JPH0324898A (ja) * | 1989-06-22 | 1991-02-01 | Canon Inc | オーディオ出力装置 |
-
1984
- 1984-09-08 DE DE19843433046 patent/DE3433046A1/de not_active Withdrawn
-
1985
- 1985-08-30 EP EP85110932A patent/EP0174568B1/fr not_active Expired - Lifetime
- 1985-08-30 AT AT85110932T patent/ATE53791T1/de active
- 1985-08-30 DE DE8585110932T patent/DE3577416D1/de not_active Expired - Lifetime
- 1985-09-05 US US06/772,661 patent/US4635549A/en not_active Expired - Fee Related
- 1985-09-06 DK DK406685A patent/DK164810C/da not_active IP Right Cessation
- 1985-09-06 ES ES1985296936U patent/ES296936Y/es not_active Expired
- 1985-09-06 CA CA000490134A patent/CA1249119A/fr not_active Expired
- 1985-09-06 JP JP60196150A patent/JPS6172552A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
ES296936U (es) | 1988-02-16 |
JPS6172552A (ja) | 1986-04-14 |
ATE53791T1 (de) | 1990-06-15 |
CA1249119A (fr) | 1989-01-24 |
DE3577416D1 (de) | 1990-06-07 |
ES296936Y (es) | 1988-11-16 |
DE3433046A1 (de) | 1986-03-20 |
US4635549A (en) | 1987-01-13 |
DK164810C (da) | 1993-01-11 |
EP0174568A3 (en) | 1987-08-19 |
DK406685A (da) | 1986-03-09 |
DK406685D0 (da) | 1985-09-06 |
EP0174568A2 (fr) | 1986-03-19 |
DK164810B (da) | 1992-08-24 |
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