WO1996002389A1 - Procede et dispositif de production en continu de corps a couches multiples - Google Patents

Procede et dispositif de production en continu de corps a couches multiples Download PDF

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Publication number
WO1996002389A1
WO1996002389A1 PCT/EP1995/002732 EP9502732W WO9602389A1 WO 1996002389 A1 WO1996002389 A1 WO 1996002389A1 EP 9502732 W EP9502732 W EP 9502732W WO 9602389 A1 WO9602389 A1 WO 9602389A1
Authority
WO
WIPO (PCT)
Prior art keywords
laminating
layers
layer
stretching
coating
Prior art date
Application number
PCT/EP1995/002732
Other languages
German (de)
English (en)
Inventor
Raimund Fraitzl
Original Assignee
Brückner Maschinenbau Gernot Brückner Gmbh & Co. Kg
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 Brückner Maschinenbau Gernot Brückner Gmbh & Co. Kg filed Critical Brückner Maschinenbau Gernot Brückner Gmbh & Co. Kg
Priority to EP95943525A priority Critical patent/EP0719211A1/fr
Priority to JP8504684A priority patent/JPH09503174A/ja
Priority to KR1019960701355A priority patent/KR960704714A/ko
Publication of WO1996002389A1 publication Critical patent/WO1996002389A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/144—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers using layers with different mechanical or chemical conditions or properties, e.g. layers with different thermal shrinkage, layers under tension during bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
    • B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
    • B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
    • B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
    • B32B37/0015—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid warp or curl
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/18—Handling of layers or the laminate
    • B32B38/1866—Handling of layers or the laminate conforming the layers or laminate to a convex or concave profile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/732—Dimensional properties
    • B32B2307/734—Dimensional stability
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2309/00—Parameters for the laminating or treatment process; Apparatus details

Definitions

  • the invention relates to a method and a device for the continuous production of multilayered bodies, in particular a method and a device for laminating, aminating or coating sheet-like or sheet-like materials.
  • Multilayer webs are produced for various purposes, which have, for example, a base film with a honeycomb structure, onto which at least one further material web is then laminated on top and / or underneath.
  • the end product Due to the different coefficients of thermal expansion on the one hand and / or due to the different temperatures at which the individual layers and materials are joined, the end product has different shrink properties depending on the layer. These different shrink properties lead to a kind of “bi-metal” -Effect, that is to say that when the multilayer material combination cools, different shrinkage behavior can occur in the individual layers, with the result that this generally causes an undesirable curvature in the final plate-like or sheet-like material.
  • knobbed sheets for example, a film provided with the relevant knobs is coated as a so-called base sheet from above and below with an extruder film, the entire sandwich-like structure then being covered by a rotating, i.e. moving belt pressed together during the cooling phase, i.e. is at least held together.
  • a rotating, i.e. moving belt pressed together during the cooling phase i.e. is at least held together.
  • the plates or the multilayer film as a whole should therefore be forced into their flat shape by the pressure exerted transversely on the multilayer film.
  • auxiliary carrier film on which, for example, a protective film is extruded in order to connect the protective film to a base layer or a base film and to hold it together during the cooling phase.
  • the auxiliary film is then removed from the finished laminated material.
  • This process is also intended to improve the final quality of the multilayer film or of the multilayer plate structure.
  • the object of the present invention based on the prior art mentioned at the outset, is to provide a further improvement, according to which multilayer products, in particular honeycomb-shaped plastic sheets or foils, are and remain as dimensionally stable and flat as possible even after production.
  • the present invention for the first time creates a solution to ensure in a continuous manufacturing process that multilayered bodies, in particular multilayered film webs (for example honeycomb-shaped plastic sheets or webs of a certain thickness) ensure that the correspondingly produced end products are and are actually stable in shape / ie have the desired flat structure.
  • multilayered bodies in particular multilayered film webs (for example honeycomb-shaped plastic sheets or webs of a certain thickness) ensure that the correspondingly produced end products are and are actually stable in shape / ie have the desired flat structure.
  • this can be ensured in that at least one of the layers, which has the lower shrinkage after the joining - due to temperature and / or material - is pre-stretched at least in the transverse direction to the feed movement of the material web before lamination or lamination.
  • the corresponding material web - which has less shrinkage after being joined - is additionally also pre-stretched in the longitudinal direction for the advancing movement of the material web and / or under Use of a curved surface, i.e. with the layers pre-curved get connected.
  • the pre-stretching or curvature is placed in such a way that after the shrinkage process has ended and thus after the layers have cooled, a flat plate-like or sheet-like material is present.
  • thermobimetal effect is known from the prepublished publication DE-Z “G. Rau: Metallische Verbundwerkstoffe, Pforzheim 1977, pp. 67 to 70” for the case of metals.
  • the characteristic property of such thermobimetals is their bending under heat.
  • thermobimetals is just described in order to cause a certain curvature to generate bending moments, in particular by using the temperature on the bimetallic elements.
  • DE 39 39 534 A1 has also disclosed a method and a support mold for the production of plates and plate-like objects such as doors, in particular refrigerator doors, which have cover layers made of different materials, for example.
  • a support mold with at least one support surface with a contour, this contour should mirror the otherwise expected deformation of the object.
  • Such preformed support molds can only be used in a discontinuous process if the parts corresponding to this prior publication are to be subjected to a spatial preforming before foaming.
  • a method for producing a laminated sheet structure has also become known from DE 29 39 500 AI. the. It can be seen from this that curved roller bodies and “banana” rollers are used in order to avoid the best possible adhesion between a metal foil and, for example, a polyolefin sheet. The tensile forces introduced by such a curved roller on a film layer serve to to be able to apply the laminated layer as smoothly as possible.
  • the difference! Chen shrink properties of the various plate or film layers accordingly ie depending on the different temperature-related expansion and shrinkage behavior of the layers with an at least two-layer structure, the material, which exhibits less shrinkage after being joined, is accordingly pre-stretched, so after cooling, a product that is as stable and level as possible is obtained.
  • the method according to the invention is particularly suitable for the production of honeycomb-like plastic sheets with cover and base foils and possibly additionally applied decorative foils.
  • FIG. 1 shows a schematic transverse view in the plane of a film web to be stretched in a transverse stretching system
  • Figure 2 is a schematic plan view of a
  • Transverse stretching system as used according to FIG. 1;
  • Figure 3 a modified embodiment of a device according to the invention.
  • FIG. 4 a further schematic cross-sectional representation of a device according to the invention with the arrangement shown in FIG. 3.
  • a so-called tensioning frame 1 is shown in a horizontal side view or in a schematic top view, on which so-called holding tongs or clips, which are known to be on transport chains, run on laterally running circumferential tracks 4 (shown in broken lines for a clip track in FIG. 2) are attached.
  • a continuously produced base film 7 with a honeycomb structure is fed from an extruder station to a feed station 9 of the transverse stretching system shown in FIGS. 1 and 2.
  • the side edge of the base film 7 is gripped by the clips 3 and thus the base film 7 is passed through the transverse stretching device.
  • the tenter or transport chain 5 By transporting the tenter or transport chain 5, a certain transverse expansion of the material web, ie the Base film 7 are performed.
  • the tenter track is designed to be flared from its feed station 9, so that the base film 7 is stretched as desired in accordance with the opening angle and the increase in the transverse extent of the base film 7 which depends on it.
  • a roller 15 is then arranged, for example, above the transverse stretching system in order to coat at this point (the maximum transverse stretching of the base film 7) with a further film 17 (laminate ⁇ tion, lamination, etc.) to perform.
  • the coating with the coating film 17 can, for example, also take place at another point, preferably at least just behind the maximum transverse extent of the base film 7 at a time, the shrinkback process already taking place in the base film 7 by reducing the maximum side extension of the base film 7.
  • the tenter frame and thus the clip web are changed in their geometry, that is to say the width position, in such a way that the thermal shrinkback controls the last applied coating film 17 corresponds to the geometric shrinkage of the base film 7 clamped in the tenter frame and pre-stretched in the elastic region.
  • the coordination with regard to the geometrical arrangement of the pre-expansion and stretching of the base film 7 in accordance with the arrangement of the geometry of the circulating transport chains 5 takes place in such a way that a flat film or a flat plate material is present after cooling.
  • Such a longitudinal stretching to be carried out as an alternative to the transverse stretching or in addition to the transverse stretching can also be carried out with a stretching system shown schematically in FIGS. 1 and 2.
  • both films can shrink back so that at the end of the stretching system a completely flat multilayer film or multilayer film Plate, that is, plate-shaped material.
  • the stretching unit shown in FIGS. 1 and 2 can also be a bidirectional stretching unit up to the maximum transverse extension position 13, which means that longitudinal and transverse stretching of the base film 7 can be carried out simultaneously.
  • a two-stage construction is also possible, in which in a separate longitudinal stretching system (in which only a longitudinal stretching is carried out) - which is connected downstream of the transverse stretching system shown in FIGS. 1 and 2, in order to first stretch the base film 7 in a longitudinal direction effect, which is then also subjected to a further transverse stretching in the transverse stretching system shown in FIGS. 1 and 2. It must it is only to be ensured that up to the point at which the coating film 17 is to be connected to the base film 7 (in FIG. 2 the point of the maximum transverse extension 13), the base film 7, which has been pre-stretched in the longitudinal direction, has a certain longitudinal expansion in the transverse stretching system according to FIG 1 and 2 is maintained until the base film reaches its laminating position 13.
  • FIG. 3 in which a device which differs from FIGS. 1 and 2 is shown in order to create a defined adaptation of the longitudinal shrinkage behavior of the coating film 17 to the base film 7.
  • a laminating roller 29 with a larger diameter is provided between two guide rollers 25 and 27 which are offset in the longitudinal direction.
  • the base film 7 is passed in the feed direction 30, the base film 7 and the coating film 17 being moved longitudinally on the curved support or counter pressure surface 31 below the laminating roll 29, at least in a sufficiently long subsequent area become.
  • the curvature to the laminating roller 29 is convex, the curvature radius lying below the support surface 31 in a transverse view.
  • the leading and trailing end 33 of the support surface 31 is held in an adjusting device 37, a central support 39 running transversely and perpendicular to the feed movement 30 of the material web being inserted in its height position by means of an adjusting device 41.
  • the base film 7 consisting of a dimpled sheet is guided in the feed direction 30 below the first guide roll 25, in order then to follow on the subsequent contact surface 31 along the curvature sheet predetermined thereby is advanced to the following guide roller 25.
  • the feed path which is curved on the support surface 31, lies above the tangent between the two guide rollers 25, in order to thereby hold the base film 7 pressed against the curved support surface 31 over the entire surface.
  • the above-mentioned laminating roller 29 is arranged at a suitable point above the support surface 31, via which the coating film 17 is brought down and laminated or coated at the laminating position (i.e. the point of contact of the laminating roller 29 with the base film 7).
  • the base film and the coating film 7, 17 then run over a sufficient distance along the further predetermined curvature of the support surface 31 until both layers 7, 17 leave the support surface 31 and are further removed in the feed direction 30 via the following guide roller 27 be drawn.
  • the curvature of the support surface 31 is chosen so that the plate film or layer - in the embodiment shown the base film 7 - is closer to the center of curvature of the curved support surface 31, so that the laminated with the coating film 17 upon further cooling Base film 7 due to the greater shrinkage behavior of the coating film 17, which after cooling has to be Waiting curvature with the multi-layer sheet material can be fully compensated.
  • the axis of curvature of the curved support surface 31, which runs transverse to the feed direction 30 and parallel to the tangent plane between the two guide rollers 25, 27, can also have a curvature whose radius of curvature is not only in a vertical direction in the feed direction extending plane, but can also be curved in a plane running transversely to the feed movement 30 and perpendicular to the material web, so that the support surface 31 is shaped like a ball.
  • the curvature 47 explained with reference to FIG. 3 is shown installed in a stretching device shown in FIG. 4, namely after a transverse or width stretching zone 45.
  • the feed movement of the material web 7, 17 in the laminating, laminating or coating device explained with reference to FIG. 4 is effected via a drive device (motor) 49.
  • stretching forces in particular the transverse stretching forces
  • the stretching forces are kept constant. This would only then be a correspondingly trackable, i.e. require flexibly designed stretching frames, by means of which the guidance of the clips which can be moved to the left of the stretching frame is always set such that the stretching forces remain constant.
  • Other measures suitable for this are also conceivable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quality & Reliability (AREA)
  • Laminated Bodies (AREA)
  • Shaping By String And By Release Of Stress In Plastics And The Like (AREA)

Abstract

Un procédé amélioré et un dispositif correspondant servent à produire en continu des corps à couches multiples. Lorsque l'on assemble au moins deux couches (7, 17), la couche qui se rétrécit le moins après l'assemblage est mécaniquement étirée ou au moins plus fortement étirée que l'autre couche (7). Un procédé complémentaire ou différent consiste à cintrer les couches (7, 17) avant de les assembler, la couche (7) dont le retrait est moins sensible à la température étant située plus près du centre de courbure. Les réglages sont effectués de sorte qu'un matériau plat en forme de plaque ou de bande soit obtenu après le refroidissement.
PCT/EP1995/002732 1994-07-19 1995-07-12 Procede et dispositif de production en continu de corps a couches multiples WO1996002389A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP95943525A EP0719211A1 (fr) 1994-07-19 1995-07-12 Procede et dispositif de production en continu de corps a couches multiples
JP8504684A JPH09503174A (ja) 1994-07-19 1995-07-12 多層体を連続的に製造するための方法及び装置
KR1019960701355A KR960704714A (ko) 1994-07-19 1995-07-12 다충물체(多層物體)를 연속적으로 생산하는 방법과 장치

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4425498.9 1994-07-19
DE4425498A DE4425498C2 (de) 1994-07-19 1994-07-19 Verfahren und Vorrichtung zur Herstellung eines zumindest zweischichtigen bahn- oder plattenförmigen Körpers

Publications (1)

Publication Number Publication Date
WO1996002389A1 true WO1996002389A1 (fr) 1996-02-01

Family

ID=6523562

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/002732 WO1996002389A1 (fr) 1994-07-19 1995-07-12 Procede et dispositif de production en continu de corps a couches multiples

Country Status (5)

Country Link
EP (1) EP0719211A1 (fr)
JP (1) JPH09503174A (fr)
KR (1) KR960704714A (fr)
DE (1) DE4425498C2 (fr)
WO (1) WO1996002389A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807139A1 (de) * 1998-02-20 1999-09-09 Freudenberg Carl Fa Verfahren und Vorrichtung zur Herstellung eines Laminats aus einer Metall- und einer Kunststoffolie
KR100483962B1 (ko) * 2002-07-24 2005-04-18 정미희 내굴곡 및 내커팅성능이 우수한 착유기 유두컵용 라이너고무조성물
KR100483963B1 (ko) * 2002-07-24 2005-04-18 김향미 내피로특성이 향상된 착유기 유두컵용 라이너 고무조성물

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19632795A1 (de) * 1996-08-15 1998-02-19 Cicorel S A Verfahren und Vorrichtung zum Laminieren von Folienbahnen
DE19942922A1 (de) * 1999-09-08 2001-03-15 Alusuisse Kapa Gmbh Verfahren zur Herstellung eines Sandwich-Paneels sowie durch dieses Verfahren hergestelltes Sandwichpaneel
TW587047B (en) * 2002-08-16 2004-05-11 Primax Electronics Ltd Hot laminating apparatus having single-side transmitting and hot laminating roller
DE102005003212B4 (de) * 2005-01-24 2008-08-14 Lisa Dräxlmaier GmbH Vorrichtung und Verfahren zum Kaschieren von Dekorträgern

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573158A (en) * 1977-10-24 1980-08-13 Sealtran Corp Method for protective film lamination with curl control
EP0180901A2 (fr) * 1984-11-02 1986-05-14 Adolph Coors Company Dispositif de laminage avec contrôle de l'étirage longitudinal et transversal
EP0264454A1 (fr) * 1986-03-26 1988-04-27 MITSUI TOATSU CHEMICALS, Inc. Procede permettant de corriger des ondulations et d'ameliorer la stabilite dimensionnelle d'une plaque stratifiee de feuille metallique flexible
DE3724011C1 (en) * 1987-07-21 1989-02-09 Kannegiesser H Gmbh Co Process and device for laminating webs
EP0483376A1 (fr) * 1990-05-21 1992-05-06 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Film resineux de polyimide
EP0546311A1 (fr) * 1991-11-07 1993-06-16 Hoechst Aktiengesellschaft Dispositif et procédé pour produire un stratifié multicouche
EP0604731A1 (fr) * 1992-12-29 1994-07-06 Kimberly-Clark Corporation Laminé ondulé, volumineux obtenu par étirage

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939500A1 (de) * 1979-09-28 1981-04-09 Mitsui Petrochemical Industries Ltd., Tokyo Verfahren zur herstellung einer laminierten blattstruktur
IT1177047B (it) * 1984-10-26 1987-08-26 Carbolux Spa Procedimento e apparecchiatura per l'accoppiamento, coadiuvato da un film ausiliario, di film protettivi a una lastra estrusa, tutti realizzati in materie plastiche e prodotto cosi' ottenuto
DE3939534A1 (de) * 1989-11-30 1991-06-06 Hennecke Gmbh Maschf Verfahren und stuetzform zum herstellen von platten und plattenartigen gegenstaenden, wie tueren, insbesondere kuehlschranktueren
DE4000495C2 (de) * 1990-01-10 1994-03-03 Spohn Verpackungswerke Gmbh & Verfahren und Vorrichtung zum Kaschieren einer ungereckten Folie mit einer gereckten Folie sowie mehrschichtige Folie

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1573158A (en) * 1977-10-24 1980-08-13 Sealtran Corp Method for protective film lamination with curl control
EP0180901A2 (fr) * 1984-11-02 1986-05-14 Adolph Coors Company Dispositif de laminage avec contrôle de l'étirage longitudinal et transversal
EP0264454A1 (fr) * 1986-03-26 1988-04-27 MITSUI TOATSU CHEMICALS, Inc. Procede permettant de corriger des ondulations et d'ameliorer la stabilite dimensionnelle d'une plaque stratifiee de feuille metallique flexible
DE3724011C1 (en) * 1987-07-21 1989-02-09 Kannegiesser H Gmbh Co Process and device for laminating webs
EP0483376A1 (fr) * 1990-05-21 1992-05-06 Kanegafuchi Kagaku Kogyo Kabushiki Kaisha Film resineux de polyimide
EP0546311A1 (fr) * 1991-11-07 1993-06-16 Hoechst Aktiengesellschaft Dispositif et procédé pour produire un stratifié multicouche
EP0604731A1 (fr) * 1992-12-29 1994-07-06 Kimberly-Clark Corporation Laminé ondulé, volumineux obtenu par étirage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19807139A1 (de) * 1998-02-20 1999-09-09 Freudenberg Carl Fa Verfahren und Vorrichtung zur Herstellung eines Laminats aus einer Metall- und einer Kunststoffolie
KR100483962B1 (ko) * 2002-07-24 2005-04-18 정미희 내굴곡 및 내커팅성능이 우수한 착유기 유두컵용 라이너고무조성물
KR100483963B1 (ko) * 2002-07-24 2005-04-18 김향미 내피로특성이 향상된 착유기 유두컵용 라이너 고무조성물

Also Published As

Publication number Publication date
EP0719211A1 (fr) 1996-07-03
JPH09503174A (ja) 1997-03-31
DE4425498A1 (de) 1996-01-25
KR960704714A (ko) 1996-10-09
DE4425498C2 (de) 1998-06-10

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