EP0730914A2 - Procédé et dispositif pour revêtir sous forme de grille des surfaces par la technique d'impression en creux avec des colles thermofusibles - Google Patents

Procédé et dispositif pour revêtir sous forme de grille des surfaces par la technique d'impression en creux avec des colles thermofusibles Download PDF

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Publication number
EP0730914A2
EP0730914A2 EP96100349A EP96100349A EP0730914A2 EP 0730914 A2 EP0730914 A2 EP 0730914A2 EP 96100349 A EP96100349 A EP 96100349A EP 96100349 A EP96100349 A EP 96100349A EP 0730914 A2 EP0730914 A2 EP 0730914A2
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EP
European Patent Office
Prior art keywords
roller
cup
powder
doctor blade
paste
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.)
Withdrawn
Application number
EP96100349A
Other languages
German (de)
English (en)
Other versions
EP0730914A3 (fr
Inventor
Josef Dr. Hefele
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP0730914A2 publication Critical patent/EP0730914A2/fr
Publication of EP0730914A3 publication Critical patent/EP0730914A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B11/00—Treatment of selected parts of textile materials, e.g. partial dyeing
    • D06B11/0056—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics
    • D06B11/0066—Treatment of selected parts of textile materials, e.g. partial dyeing of fabrics by spaced contacts with a member carrying a single treating material
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D27/00—Details of garments or of their making
    • A41D27/02—Linings
    • A41D27/06—Stiffening-pieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0813—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for supplying liquid or other fluent material to the roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
    • B05C1/0817—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line characterised by means for removing partially liquid or other fluent material from the roller, e.g. scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
    • B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
    • B05C1/16—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work
    • B05C1/165—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length only at particular parts of the work using a roller or other rotating member which contacts the work along a generating line
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D1/00—Processes for applying liquids or other fluent materials
    • B05D1/28—Processes for applying liquids or other fluent materials performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers

Definitions

  • This invention describes a method and an apparatus for the grid-like coating of web-like flexible sheets with hot melt adhesives.
  • the coating consists of two grid layers that sit on top of one another: a base layer that is not or only weakly thermally activated and a cover layer of a thermally activated hot-melt adhesive that is formed from powder and has a higher flowability in the melt state than the basic layer. Both layers are applied using the gravure printing process and represent a grid-like double coating.
  • Double coating processes which have already become known have been described in the "Handbook of Textile Fixing Inserts" by Sroka, 3rd extended edition 1993, pages 131 to 136.
  • the dot-Riesel process which is still used almost alone today, in which the paste print is sprinkled with hot-melt adhesive powder on a insert screen with a screen printing stencil and then the excess powder not adhering to the print is removed again by shaking, blowing and sucking .
  • the disadvantage of this method is that the scattering powder also adheres to the edges of the pressure points beyond their contact surface on the carrier and, in addition, fine-grain powder, particularly in the case of very fine-fiber synthetic articles, is difficult to remove between the pressure points.
  • the double powder dot process which is also mentioned, works in gravure printing with two funnel doctor blades, one behind the other, on an engraving roller.
  • two coordinated different types of hot-melt adhesive powder are required, which separate from the engraving recesses under the same temperature conditions of the engraving and heating rollers, which greatly limits the applicability of the method.
  • a double paste dot process has also already been described, in which two different pastes are printed and positioned one above the other with a screen printing stencil with two inner doctor blades.
  • a satisfactorily working embodiment has not yet been found with this method and therefore the method has not found its way into practice.
  • the base layer is screen-printed paste coated
  • the dried and sintered paste points of the base layer with the tips are dipped into a very uniformly thin film of a hot-melt adhesive dispersion or solution on a roll shell of a roll coater.
  • the main disadvantage of the method was that fine screens are unsuitable for this, a high level of precision is required for the uniformity of the film formation on the roll coater, and the mechanical and production engineering outlay is high.
  • the object of the present invention was therefore to find a simple and safe to use, rationally working method for double coating, which only requires a modest amount of additional mechanical work, is accurate, feasible even with very fine screen dots, avoids hardness and largely uniform shape and size the coating points are also produced with translucent and less densely woven and knitted textile carriers.
  • the process can often be carried out with the conventional powder point systems, which work with cups and heating rollers, with relatively modest cultivation and surprisingly in almost the same How to perform a conventional powder spot coating.
  • the attachment consists primarily of a second doctor blade (4) or (4a).
  • the coating edge of the squeegee (4) forms an acute angle with the rounding of the engraving roll on the contact line, for example by appropriate positioning and / or by chamfering the coating edge (4 '), as a result of which a slight compression effect is exerted on the dispersion paste (5) provided.
  • Such a squeegee positioning with a beveled edge of the doctor blade is shown in FIG. Figures I and III show another doctor blade variant (4a) with a stronger compression effect on the paste.
  • the squeegee edge (4a ') should be sharply ground and form an acute angle with the well roller wall on the ground tip to the side of the paste template.
  • the paste can be fed through a tube with a large number of bores, the diameter of which changes successively and is coordinated in such a way that the paste discharge is as uniform as possible over the entire printing width of the cup roller.
  • the paste can exit the bores of the tube into a prechamber, from which the paste then runs onto the paste template in front of the doctor blade via a slot die. It can also be advantageous to feed the paste from both sides of the well roller via two tubes in equal amounts and to allow the paste to emerge from its bores into a common antechamber.
  • the surface of the cell roller comes with the fabric (7) which is heated by a hot press roller (6) and is pressed against the cell roller and pressed against it. in contact and takes over the fabric either over a distance of half the cup roller circumference or releases it immediately after passing through the line contact with the press roller. Due to the press contact of the hot fabric with the comparatively cool cup roller filling, a shock-like heat transfer takes place, which may already be sufficient to cause the filling of powder and paste to detach from the cup and to transfer it to the sheet.
  • the application of heat on the path from the press roll (6) to the press roll (11) can be expedient in the first place when pastes containing crosslinkable components are applied with a doctor (4) or (4a). In many cases, however, it can also be omitted when these pastes are used, and in particular when the pastes are set to be heat-sensitive and they coagulate like a shock under the action of heat from the pressed hot sheet.
  • the sheet (7) When the sheet (7) is removed from the cup roller, the sheet generally peels out the entire filling without any residues remaining in the cups.
  • the entire cup filling is also peeled off when the less densely woven and knitted somewhat lattice and translucent textile carriers can be used as flat structures for coating.
  • the coating points taken over from the textile carriers all have almost the same shape and size.
  • the internally heated press roll (6) and / or the press roll (11) can be covered with a thin elastic layer up to approximately 1 mm thick, which layer consists of silicone rubber or several layers of a fine, temperature-resistant aramid fabric. which is treated with silicone rubber in the outermost layer. It is also possible to coat the fabric to be coated in the area of contact with the cup roller with a circumferential band of thermally resistant fiber material, e.g. B. with a fabric made of aramid fibers, which tape is guided from the heated press roll (6) to the press roll (11) under tension on the cup roll (1) and then returns to the press roll (6).
  • a circumferential band of thermally resistant fiber material e.g. B. with a fabric made of aramid fibers
  • the now coated surface structure (8) can be dried and sintered on the circumference of the press roller (11) if it is heated.
  • the drying and sintering can also take place in a downstream sintering and drying channel, not shown.
  • a preheating roller (13) is also sketched, which causes a further heating of the supplied fabric. It may also be advantageous to gently smooth the surface of the coating after drying and sintering by applying a low pressure, e.g. by applying a soft or foam rubber roller to a cooled smooth steel roller, through the line of contact of which the coated hot sheet is passed.
  • the powder fillings in the wells under doctor blade (4) or (4a) can be covered with pasty pastes of finely powdered polymers with reduced thermal activation on the basis of copolyamides, copolyesters or polyethlenes , which produce the blocking base layer on the finished product with a reduced melt flow compared to the cover layer.
  • the dry substances of the pastes should be in the melting range over approx. 120 ° C and their melt index according to DIN 53 735 should be less than 10 g / 10 min at 21.6 N nozzle load and 160 ° C measuring temperature.
  • Water-containing pasty dispersions which contain very finely divided crosslinkable fractions, such as crosslinkable polyurethane, polyacrylates, polybutadiene-acrylonitriles, polybutadiene-styrene-acrylonitriles or vinyl acetate copolymers, are advantageously suitable.
  • crosslinkable water-containing dispersion pastes can additionally contain fine plastic powders with reduced thermal activity, such as hot-melt adhesive powder based on copolyamides, copolyesters and polyethylenes, as well as PVC powder and mineral fillers, and finally fatty acids, paraffins, waxes, heat sensitizers, thickeners and lubricants.
  • the powder additives promote the detachment from the wells.
  • the pastes have a dry residue of at least 40%.
  • suitable dispersions with a particularly high residue of almost 100% are spreadable plastisols made from PVC copolymers and liquid plasticizers, which are also used to cover the powder fillings in the wells and can form a suitable barrier layer.
  • the crosslinkable dispersion pastes can also be slightly foamed to about 1.2 times the volume.
  • the squeegee (3) or (3a), with which the cells are filled with powder, should have a sharply ground brushing edge and sit with this coating edge at an obtuse angle to the side of the powder template on the cell roller.
  • the doctor blade (3) or (3a) fine powder hot melt adhesive with a grain size below 100 m ⁇ and preferably below 80 m ⁇ should be presented as an intensely moving powder bed, the copolyamides or copolyesters are with a melting range of about 95 to 115 ° C and a melt index according to DIN 52 735 from 15 to 100 g / 10 min at 160 ° C measuring temperature and 21.6 N nozzle load.
  • a stirring rod can also be used, which rotates above the roller surface parallel to the well roller axis and is provided with pins sitting close together, the tips of which come close to the roller surface.
  • a stir bar (17) is sketched in FIGS. II and V.
  • Preheat roller (13) and press roller (6) are heated to an outer jacket temperature of 150 to 200 ° C, as with conventional powder single coating. Press roll (11) can also be heated to this temperature.
  • the surface temperature of the cup roller should be between 25 and 50 ° C in the area of the doctor blade (4) and (4a).
  • the application weight can be varied between approx. 7 and approx. 30 g / m 2 and the grid can be used between 11 and 33 mesh.
  • the weight ratio of the base layer to the top layer can be varied between approximately 20:80 to 50:50.
  • the cups can be crescent-shaped.
  • the inner walls of the cells should reflect the outline of small cylindrical platelets or round disks, so that platelets or round disks also form during coating.
  • such round disks have a pronounced adhesive power that is hardly weakened when the disks are weakly smoothed.
  • a weak smoothing significantly reduces the tendency to break through through thin outer fabrics.
  • the cups can be stamped into the surface of metal rollers using appropriate tools.
  • a well roller which consists of an internally heatable metal roller core which is covered with a vulcanized soft rubber layer, which can also be foamed and has a thickness of approx. 1-3 mm.
  • a screen printing stencil with a close contact is smoothly drawn on the outside.
  • the cup fillings can be removed particularly easily with a cup roller formed in this way.
  • the paste covering of the powder fillings is caused to protrude somewhat raised from the now cup-shaped holes in the stencil, whereby a coherent anchoring of each individual filling is brought about completely on the fabric with the formation of a transfer-like coating.
  • a rubber tube pulled over the roller core can be used, between which and the metal roller surface as a cushion a liquid, such as water or ethylene glycol, is pressed after covering the round screen printing stencil and which the tube presses against the template.
  • the distance between the inner wall of the template and the metal roller surface can be approximately 1.5 to 2 mm with a rubber thickness of the hose of 1 mm.
EP96100349A 1995-03-10 1996-01-11 Procédé et dispositif pour revêtir sous forme de grille des surfaces par la technique d'impression en creux avec des colles thermofusibles Withdrawn EP0730914A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19508745 1995-03-10
DE1995108745 DE19508745A1 (de) 1995-03-10 1995-03-10 Verfahren zum rasterförmigen Beschichten von Flächengebilden mit Schmelzklebern im Tiefdruckverfahren

Publications (2)

Publication Number Publication Date
EP0730914A2 true EP0730914A2 (fr) 1996-09-11
EP0730914A3 EP0730914A3 (fr) 1997-12-17

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EP96100349A Withdrawn EP0730914A3 (fr) 1995-03-10 1996-01-11 Procédé et dispositif pour revêtir sous forme de grille des surfaces par la technique d'impression en creux avec des colles thermofusibles

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DE (1) DE19508745A1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1013647A3 (fr) * 2000-08-17 2002-05-07 Cockerill Rech & Dev Dispositif d'application de liquide de revetement sur une tole.
EP1223244A2 (fr) * 2001-01-16 2002-07-17 Kufner Textilwerke GmbH Procédé et dispositif pour le revêtement sous forme de trames de surfaces flexibles avec des colles thermofusibles
US6602580B1 (en) * 1996-01-10 2003-08-05 The Procter & Gamble Company Material having a substance protected by deformable standoffs and method of making
DE102004012269A1 (de) * 2004-03-13 2005-09-29 Carl Freudenberg Kg Textile Flächengebilde mit rasterförmiger Beschichtung, deren Herstellung und Verwendung
EP1825922A3 (fr) * 2006-02-28 2008-06-25 Herbert Olbrich GmbH & Co. KG Dispositif de revêtement
WO2011079340A3 (fr) * 2009-12-23 2011-09-15 Tannpapier Gmbh Procédé de fabrication d'une feuille de plastique en forme de bande
CN102794246A (zh) * 2012-07-16 2012-11-28 杭州塞利仕科技有限公司 一种用于在导电丝表面裹覆导电浆料的裹浆机构以及裹浆方法
EP2148746B1 (fr) * 2007-04-25 2013-08-28 Theodor Hymmen Verwaltungs GmbH Procédé et dispositif de revêtement d'une pièce plate avec une substance fluide
CN105054417A (zh) * 2015-07-27 2015-11-18 长兴县志纬服装辅料有限公司 一种粘合衬的加工设备
US9248054B2 (en) 2012-11-27 2016-02-02 The Procter & Gamble Company Methods and apparatus for making elastic laminates
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19959214A1 (de) * 1999-12-08 2001-06-13 Josef Hefele Verfahren und Vorrichtungen zur Fertigung flexibler Flächengebilde mit rasterförmiger Schmelzkleberbeschichtung
DE102006025877B4 (de) * 2006-06-02 2013-01-03 Carl Meiser Gmbh & Co. Kg Verfahren zum Beschichten eines flächigen, flexiblen Substrats
DE102008034479A1 (de) * 2008-07-24 2010-02-04 Kraussmaffei Technologies Gmbh Verfahren und Vorrichtung zur Herstellung einer beschichteten Materialbahn, insbesondere einer Kunstlederbahn

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139613A (en) * 1975-07-23 1979-02-13 Kufner Textilwerke Kg Process for the patterned deposition of powdered thermoplastic adhesive materials on the outer surface of a surface form
US4183978A (en) * 1972-03-23 1980-01-15 Kufner Textilwerke Kg Raster-like coating of heat-sealable adhesives on substrates

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183978A (en) * 1972-03-23 1980-01-15 Kufner Textilwerke Kg Raster-like coating of heat-sealable adhesives on substrates
US4139613A (en) * 1975-07-23 1979-02-13 Kufner Textilwerke Kg Process for the patterned deposition of powdered thermoplastic adhesive materials on the outer surface of a surface form

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6602580B1 (en) * 1996-01-10 2003-08-05 The Procter & Gamble Company Material having a substance protected by deformable standoffs and method of making
BE1013647A3 (fr) * 2000-08-17 2002-05-07 Cockerill Rech & Dev Dispositif d'application de liquide de revetement sur une tole.
EP1223244A2 (fr) * 2001-01-16 2002-07-17 Kufner Textilwerke GmbH Procédé et dispositif pour le revêtement sous forme de trames de surfaces flexibles avec des colles thermofusibles
EP1223244A3 (fr) * 2001-01-16 2004-03-24 Kufner Textilwerke GmbH Procédé et dispositif pour le revêtement sous forme de trames de surfaces flexibles avec des colles thermofusibles
DE102004012269A1 (de) * 2004-03-13 2005-09-29 Carl Freudenberg Kg Textile Flächengebilde mit rasterförmiger Beschichtung, deren Herstellung und Verwendung
EP1825922A3 (fr) * 2006-02-28 2008-06-25 Herbert Olbrich GmbH & Co. KG Dispositif de revêtement
EP2148746B1 (fr) * 2007-04-25 2013-08-28 Theodor Hymmen Verwaltungs GmbH Procédé et dispositif de revêtement d'une pièce plate avec une substance fluide
US8993069B2 (en) 2009-12-23 2015-03-31 Tannpapier Gmbh Method for producing a band-shaped plastic film
CN102869455A (zh) * 2009-12-23 2013-01-09 坦恩帕皮尔有限公司 用于将胶粘剂涂覆到带状塑料薄膜上的装置和方法
WO2011079340A3 (fr) * 2009-12-23 2011-09-15 Tannpapier Gmbh Procédé de fabrication d'une feuille de plastique en forme de bande
CN102869455B (zh) * 2009-12-23 2015-07-29 坦恩帕皮尔有限公司 用于将胶粘剂涂覆到带状塑料薄膜上的装置和方法
CN102794246A (zh) * 2012-07-16 2012-11-28 杭州塞利仕科技有限公司 一种用于在导电丝表面裹覆导电浆料的裹浆机构以及裹浆方法
CN102794246B (zh) * 2012-07-16 2015-09-30 杭州塞利仕科技有限公司 一种用于在导电丝表面裹覆导电浆料的裹浆机构以及裹浆方法
US9248054B2 (en) 2012-11-27 2016-02-02 The Procter & Gamble Company Methods and apparatus for making elastic laminates
US9265672B2 (en) 2012-11-27 2016-02-23 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US9295590B2 (en) 2012-11-27 2016-03-29 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9730839B2 (en) 2012-11-27 2017-08-15 The Procter & Gamble Company Method and apparatus for applying an elastic material to a moving substrate in a curved path
US9808827B2 (en) 2012-11-27 2017-11-07 The Procter & Gamble Company Methods and apparatus for applying adhesives in patterns to an advancing substrate
US10729593B2 (en) 2012-11-27 2020-08-04 The Procter & Gamble Company Methods and apparatus for making elastic laminates
CN105054417A (zh) * 2015-07-27 2015-11-18 长兴县志纬服装辅料有限公司 一种粘合衬的加工设备

Also Published As

Publication number Publication date
EP0730914A3 (fr) 1997-12-17
DE19508745A1 (de) 1996-09-12

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