[go: up one dir, main page]

WO1997019814A1 - Recyclable laminate and method of manufacturing the same - Google Patents

Recyclable laminate and method of manufacturing the same Download PDF

Info

Publication number
WO1997019814A1
WO1997019814A1 PCT/EP1995/004963 EP9504963W WO9719814A1 WO 1997019814 A1 WO1997019814 A1 WO 1997019814A1 EP 9504963 W EP9504963 W EP 9504963W WO 9719814 A1 WO9719814 A1 WO 9719814A1
Authority
WO
WIPO (PCT)
Prior art keywords
cardboard
glue
pressing
cold
layers
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.)
Ceased
Application number
PCT/EP1995/004963
Other languages
German (de)
French (fr)
Inventor
Bruno Steinhoff
Eugen Karl MÖSSNER
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.)
STEINHOFF LAMINAT GmbH
Original Assignee
STEINHOFF LAMINAT GmbH
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 STEINHOFF LAMINAT GmbH filed Critical STEINHOFF LAMINAT GmbH
Priority to AU43453/96A priority Critical patent/AU4345396A/en
Publication of WO1997019814A1 publication Critical patent/WO1997019814A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/146—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers whereby one or more of the layers is a honeycomb structure
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47B—TABLES; DESKS; OFFICE FURNITURE; CABINETS; DRAWERS; GENERAL DETAILS OF FURNITURE
    • A47B96/00—Details of cabinets, racks or shelf units not covered by a single one of groups A47B43/00 - A47B95/00; General details of furniture
    • A47B96/20—Furniture panels or like furniture elements
    • A47B96/205—Composite panels, comprising several elements joined together
    • 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
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/16—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products of fibres, chips, vegetable stems, or the like
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
    • E04C2/34—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts
    • E04C2/36—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels
    • E04C2/365—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure composed of two or more spaced sheet-like parts spaced apart by transversely-placed strip material, e.g. honeycomb panels by honeycomb structures
    • 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
    • B32B2317/00—Animal or vegetable based
    • B32B2317/12—Paper, e.g. cardboard

Definitions

  • the invention relates to a sheet material, in particular for furniture production, which is made from several layers of cardboard, cardboard or the like, pressed into laminate with the insertion of a binder.
  • the invention further relates to corresponding methods for producing the plate material.
  • the object of the invention is to provide a corresponding sheet material which consists only of environmentally friendly, natural or recycled materials which can be recycled itself, i.e. , can be returned to the material cycle, and which is also sufficiently stable and inexpensive to manufacture.
  • the cardboard and / or the cardboard is largely free of glue and the binder is a glue consisting essentially of a natural material, which is solidified in the cold, dry state after pressing.
  • the plate material according to the invention can, for. B. serve as a replacement for hardboard in cabinet back walls. These hardboard are among others not easily recyclable due to the high resinous glue.
  • the material used is an equally large plate from
  • the plate material according to the invention only about a third of the material use of a conventional hardboard. Furthermore, the plate material according to the invention has the advantage that both sides are smooth and, for. B. appropriate painting, can serve as decorative surfaces.
  • the surface can of course also be glued and pressed with a plywood layer and / or a veneer, so that natural wood decors are also possible. It is also possible to apply decorative foils, fabrics or to apply flocking to the surface.
  • the decorative materials can be easily peeled off and separated from the core material mass after the core material has been dissolved or dissolved.
  • the plate material according to the invention is therefore not limited to the use of cabinet rear walls, but it is of course also possible to produce side walls, front surfaces or other items therefrom. Since a shape other than the simple straight plate shape is also possible when pressing, rounded edges for furniture or the like can also be produced from the plate material.
  • the same contains a core of expanded paper honeycomb material, the honeycomb cells of which are pressed on both sides with several, preferably two, layers of glued cardboard, which is solidified in the cold, dry state.
  • a core of expanded paper honeycomb material the honeycomb cells of which are pressed on both sides with several, preferably two, layers of glued cardboard, which is solidified in the cold, dry state.
  • Such plate material offers z. B. od as a replacement for kitchen worktops. Like. For this purpose, only the outer peripheral edges would have to be provided with end pieces made of wood, plastic, metal or a combination of the different materials.
  • This Panel material with a honeycomb core is extremely stable and at the same time very light.
  • the cardboard preferably consists essentially of glue-free cellulose, in particular of recycled material, and has a weight per unit area of 350 to 380 g / m 2 and a thickness of approximately 0.57 mm.
  • the glue is preferably a melt glue or a cold glue made of starch and contains small amounts of polyvinyl alcohol and polyvinyl acetate. The production of the glue from potato starch is particularly cheap. In order to obtain a higher quality natural glue, corn starch is particularly suitable. The amount of water in the glue is preferably about 50% before use.
  • the board material contains a total of about 10% binder in the dry state.
  • the cardboard is at least pulled off a roll or removed from a stack, glued with cold glue, cut to a board size, laid on top of one another, pressed together for a predetermined time and then dried, spaced apart, stacked and ventilated.
  • the pressing time itself preferably takes about 2 to 3 minutes.
  • the method according to the invention is therefore extremely fast and therefore inexpensive.
  • Conventional known tools can also be used for pressing.
  • the plate material is advantageously subjected to a first pressing phase with a heating temperature corresponding to the evaporation temperature of the binder moisture at the respective pressing pressure for a predetermined time and then exposed to a deaeration and drying phase which lasts for a predetermined time, whereupon a second cold pressing phase for a second time predetermined time and the subsequent spaced stacking and drying follows.
  • the warm press phase must be timed so that there is sufficient heat flow in the entire material block. It is therefore dependent, among other things, on the material selected, in particular the thickness of the cardboard or cardboard layers.
  • the cold pressing time takes about 2 to 3 minutes.
  • the venting and drying phase between the two pressing operations is preferably about 15 seconds.
  • the separating metal plates are preferably kept apart from one another during the venting and drying phase in order to achieve better ventilation and faster drying.
  • the plate material is therefore not solidified in the press but only when it cools or dries. This prevents the steam generated during pressing from binding the glue degraded or destroyed. It also has the advantage that the total time in the press is kept relatively short, so that the production rate per press is relatively high. There then only has to be adequate space for drying and storage.
  • the cardboard is pulled off from at least one roll or removed from a stack, cut to a sheet size, laid on top of one another in layers including the glue and subjected to hot pressing until the melt glue has melted completely followed by stacking and cooling for solidification.
  • the expanded and solidified honeycomb core, the cardboard layers and possibly the plywood layer and / or the veneer are glued with cold glue and placed one on top of the other in a press and subjected to cold pressing for a predetermined time, followed by spaced stacking and Drying takes place.
  • the cold pressing time is preferably 2 to 3 minutes.
  • the expansion of the expanded honeycomb core before covering and pressing with the cardboard layers can be achieved by treating the honeycomb material with a natural impregnating material, preferably water-based cold glue, and then drying it.
  • a natural impregnating material preferably water-based cold glue
  • the pressing jaws are preferably moved to a predetermined plate thickness dimension which is somewhat smaller than the total thickness the honeycomb core with the cardboard layers and possibly the plywood layers and / or the veneer layers before the pressing.
  • the base material is more absorbent than other carrier material such.
  • B. plywood or chipboard there is the possibility here to glue a glued decorative layer, including veneer, after which die ⁇ e pulls completely smooth without subsequent press treatment when setting the glue. This has the advantage that a further work step and tool costs can be saved and, in addition, the decorative layer can be separated from the carrier material without problems during recycling.
  • a cassette structure can advantageously be introduced into the surface by cutting in the edges of the zone to be lowered and, during pressing, the cut-out areas are lowered by pressing the honeycomb cell core through appropriate inserts in the tool.
  • the edges of the lowered areas are advantageously clad with profile strips. This can e.g. B. be about Z-shaped wooden profile strips.
  • FIG. 1 is a perspective view of a piece of sheet material according to the invention from two layers of cardboard
  • FIG. 2 is a perspective view of a sheet material according to the invention, consisting of two layers of cardboard and a decorative layer made of veneer,
  • FIG. 3 is a perspective view of a sheet material according to the invention made of three layers of cardboard and a decorative cover layer made of plywood,
  • FIG. 4 is a perspective view with partial section of a piece of sheet material with a core made of expanded paper honeycomb material and two layers of glued cardboard on the top and bottom,
  • Fig. 5 is a perspective view of a section through a piece of semi-finished plate with a decorative recess, for. B. for a cassette door; to the right of the dashed line is the right edge of the cassette-shaped recess with the decorative profile frame strip already inserted, to the left of the dashed line is the left edge of the cassette recess before inserting the decorative profile frame strip.
  • the sheet material (P, P *) consists of several layers of cardboard (Kl, Kl *; K2, K2 *, K3), cardboard or the like, which is pressed into laminate by inserting a binder (B).
  • the raw cardboard (Kl, Kl *; K2, K2 *, K3) is largely glue-free and consists essentially of glue-free cellulose. This is preferably recycled material.
  • the cardboard (Kl, Kl *; K2, K2 *, K3) has a basis weight of 350 to 380 g / m 2 in the present exemplary embodiments and a thickness of approximately 0.57 mm.
  • the binder (B) is a glue consisting essentially of a natural product.
  • This glue can be both a melt glue and a cold glue and is preferably made from starch, in particular corn or potato starch. It contains small amounts of polyvinyl alcohol and polyvinyl acetate. Before use, the glue contains about 50% water.
  • the glue can be prepared either as a long-term stable emulsion or shortly before use as a short-term stable dispersion without stabilizers.
  • the finished plate material (P, P *) contains approximately 10% binder (B).
  • the plate material (P, P *) has a core (W) made of expanded honeycomb material (W).
  • the honeycomb cells (WZ) are pressed on both sides with several, preferably two, layers of glued cardboard (Kl *, K2 *) and solidified in the cold, dry state.
  • the paper honeycomb material (W) consists of recycled material and is made with a natural impregnating material, e.g. B. water-based cold glue, treated and dried solidified.
  • a natural impregnating material e.g. B. water-based cold glue
  • the plate material (P, P *) can also be glued and pressed at least on one side with a plywood layer (SF) or a veneer (F) in order to obtain a corresponding decorative surface.
  • the material (P, P *) can of course also be lacquered or plastic coated, if this is desired.
  • the cardboard (Kl, Kl *; K2, K2 *, K3) is pulled off a roll, then glued with the cold glue and cut to a sheet size. These layers are then placed on top of each other and pressed for about 2 to 3 minutes. The finished plates (P) are then stacked at a distance from one another for drying and aerated.
  • the plate material (P, P *) can also be subjected to a first pressing phase with a heating temperature corresponding to the evaporation temperature of the binder moisture at the respective pressing pressure for a few minutes.
  • the plate material (P, P *) is then exposed to a venting and drying phase for about 15 seconds. This is followed by a second cold pressing phase for a few minutes and finally the spaced stacking and post-drying.
  • the separating metal plates kept apart during the venting and drying phase. It is also advisable to use heatable metal plates as separating plates.
  • the cardboard (Kl, Kl *; K2, K2 *, K3) is pulled off a roll and glued with the melt glue. Then the cardboard (Kl, Kl *; K2, K2 *, K3) is cut to a sheet size, laid on top of each other, including the glue, and then subjected to hot pressing until the melt glue has melted completely. This is then followed by stacking and cooling for solidification.
  • melt glue can also be applied to the individual cardboard sections after cutting or can be shot in the form of melt glue film when the cardboard sections are laid one on top of the other.
  • the honeycomb material (W) is first expanded to the desired size and solidified by treatment with a natural impregnation material, preferably water-based cold glue, and subsequent drying.
  • a natural impregnation material preferably water-based cold glue
  • the honeycomb core (W), the cardboard layers (Kl, Kl *, K2, K2 *) and, if applicable, the plywood layer (SF) or the veneer (F) are then glued with cold glue and placed one on top of the other. This layering is then placed together in a press and subjected to cold pressing for 2 to 3 minutes. Then the spaced stacking and drying follows again.
  • the press jaws are preferably brought together to a predetermined sheet thickness, which is slightly less than the total thickness of the honeycomb core (W) with the cardboard layers (Kl *, K2 *) and, if applicable, the plywood layers (SF) or the veneer layers (F ) before pressing.
  • a predetermined sheet thickness which is slightly less than the total thickness of the honeycomb core (W) with the cardboard layers (Kl *, K2 *) and, if applicable, the plywood layers (SF) or the veneer layers (F ) before pressing.
  • the plate thickness dimension in such a way that the honeycomb material is not kinked during pressing.
  • the cardboard or veneer layers (63, 64) are separated all around in at least one partial area (32a) and the honeycomb cells (4 *) are pressed together and compressed in this partial area (32a).
  • the separated cardboard layer area (64) is accordingly sunk in the manner of a cassette.
  • a cover profile strip (32d), which closes off the honeycomb cells (4) laterally, is glued in along the edge zone, preferably all around the entire partial area.
  • This can, as shown in Fig. 5, e.g. B. be an approximately Z-shaped hollow profile strip, the upper leg rests on the upper surface (63) of the plate material and the lower leg (62) rests on the lowered surface (64) of the plate material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

The invention concerns a laminate (P, P*), in particular for furniture manufacture, which is produced from a plurality of layers of cardboard (K1, K1*; K2, K2*, K3), paperboard or the like pressed to form the laminate, with the introduction of a binder (B). The cardboard (K1, K1*; K2, K2*, K3) and/or the paperboard are largely free of adhesive and the binder (B) is an adhesive substantially consisting of a natural substance which, after pressing, solidifies in the cold dry state.

Description

Materialkreislauffähiges Plattenmaterial und dessen HerstellungsverfahrenRecyclable sheet material and its manufacturing process

Die Erfindung betrifft ein Plattenmaterial, insbesondere für die Möbelherstellung, das aus mehreren Lagen Karton, Pappe, od. dgl., unter Einfügung von einem Bindemittel zu Laminat verpreßt, hergestellt ist.The invention relates to a sheet material, in particular for furniture production, which is made from several layers of cardboard, cardboard or the like, pressed into laminate with the insertion of a binder.

Die Erfindung betrifft weiterhin entsprechende Verfahren zur Herstellung des Plattenmaterials.The invention further relates to corresponding methods for producing the plate material.

Aufgabe der Erfindung ist die Schaffung eines entsprechenden Plattenmaterials, welches nur aus umweltfreundlichen, natürlichen oder recycelten Materialien besteht, welches selber wieder recycelt werden kann, d.h. , in den Materialkreislauf zurückgeführt werden kann, und welches zudem ausreichend stabil und günstig herstellbar ist.The object of the invention is to provide a corresponding sheet material which consists only of environmentally friendly, natural or recycled materials which can be recycled itself, i.e. , can be returned to the material cycle, and which is also sufficiently stable and inexpensive to manufacture.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Karton und/oder die Pappe weitgehend leimfrei ist und das Bindemittel ein im wesentlichen aus einem Naturstoff bestehender Leim ist, der nach dem Verpreßen im kalten trockenen Zustand verfestigt ist.This object is achieved in that the cardboard and / or the cardboard is largely free of glue and the binder is a glue consisting essentially of a natural material, which is solidified in the cold, dry state after pressing.

Das erfindungsgemäße Plattenmaterial kann z. B. als Ersatz für Hartfaserplatten in Schrankrückwänden dienen. Diese Hartfaserplatten sind u.a. wegen des stark harzhaltigen Leimes nicht ohne weiteres recycelbar. Zudem beträgt der Materialeinsatz einer gleich großen Platte aus demThe plate material according to the invention can, for. B. serve as a replacement for hardboard in cabinet back walls. These hardboard are among others not easily recyclable due to the high resinous glue. In addition, the material used is an equally large plate from

ORIGINALUNTERLAGEN erfindungsgemäßen Plattenmaterial nur ca. ein Drittel des Materialeinsatzes einer herkömmlichen Hartfaserplatte. Weiterhin hat das erfindungsgemäße Plattenmaterial den Vorteil, daß beide Seiten glatt sind und, nach z. B. entsprechendem Lackieren, als Dekorflächen dienen können.ORIGINAL DOCUMENTS plate material according to the invention only about a third of the material use of a conventional hardboard. Furthermore, the plate material according to the invention has the advantage that both sides are smooth and, for. B. appropriate painting, can serve as decorative surfaces.

Alternativ kann die Oberfläche selbstverständlich auch mit einer Sperrholzschicht und/oder einem Furnier verleimt und verpreßt werden, so daß auch Naturholzdekore möglich sind. Ebenso ist auch ein Aufziehen von Dekorfolien, von Stoffen oder auch das Aufbringen einer Beflockung auf die Oberfläche möglich.Alternatively, the surface can of course also be glued and pressed with a plywood layer and / or a veneer, so that natural wood decors are also possible. It is also possible to apply decorative foils, fabrics or to apply flocking to the surface.

Beim Recyceln solcher Platten mit Dekoroberfläche lassen sich nach einem An- oder Auflösen des Kernmaterials die Dekormaterialien leicht abziehen und von der Kernmaterialmasse trennen.When recycling such panels with a decorative surface, the decorative materials can be easily peeled off and separated from the core material mass after the core material has been dissolved or dissolved.

Das erfindungsgemäße Plattenmaterial ist daher nicht auf die Verwendung von Schrankrückwänden beschränkt, sondern es lassen sich selbstverständlich auch Seitenwände, Frontflächen oder anderes daraus herstellen. Da beim Pressen auch eine andere Formgebung als die einfache gerade Plattenform möglich ist, können aus dem Plattenmaterial auch abgerundete Kanten für Möbel od. dgl. hergestellt werden.The plate material according to the invention is therefore not limited to the use of cabinet rear walls, but it is of course also possible to produce side walls, front surfaces or other items therefrom. Since a shape other than the simple straight plate shape is also possible when pressing, rounded edges for furniture or the like can also be produced from the plate material.

Bei einer vorteilhaften Ausführungsform des Plattenmaterials enthält dasselbe einen Kern aus expandiertem Papierwabenmaterial, deren Wabenzellen beidseitig jeweils mit mehreren, vorzugsweise zwei, Lagen beleimten Karton verpreßt ist, der im kalten trockenen Zustand verfestigt ist. Derartiges Plattenmaterial bietet sich z. B. als Ersatz für Küchenarbeitsplatten od. dgl. an. Hierzu müßten nur die außen umlaufenden Kanten entsprechend mit Abschlußstücken aus Holz, Kunststoff, Metall oder Kombination der verschiedenen Materialien versehen werden. Dieses Plattenmaterial mit Wabenkern ist äußerst stabil und gleichzeitig sehr leicht.In an advantageous embodiment of the plate material, the same contains a core of expanded paper honeycomb material, the honeycomb cells of which are pressed on both sides with several, preferably two, layers of glued cardboard, which is solidified in the cold, dry state. Such plate material offers z. B. od as a replacement for kitchen worktops. Like. For this purpose, only the outer peripheral edges would have to be provided with end pieces made of wood, plastic, metal or a combination of the different materials. This Panel material with a honeycomb core is extremely stable and at the same time very light.

Der Karton besteht vorzugsweise im wesentlichen aus leimfreier Zellulose, insbesondere aus recyceltem Material, und weist ein Flächengewicht von 350 bis 380 g/m2 und eine Dicke von ca. 0,57 mm auf. Der Leim ist vorzugsweise ein Schmelzleim oder ein Kaltleim aus Stärke und enthält geringe Mengen Polyvinylalkohol und Polyvinylacetat. Besonders günstig ist die Herstellung des Leims aus Kartoffelstärke. Um einen hochwertigeren Naturleim zu erhalten, bietet sich insbesondere auch Maisstärke an. Vorzugsweise beträgt der Wasseranteil im Leim vor der Anwendung etwa 50%.The cardboard preferably consists essentially of glue-free cellulose, in particular of recycled material, and has a weight per unit area of 350 to 380 g / m 2 and a thickness of approximately 0.57 mm. The glue is preferably a melt glue or a cold glue made of starch and contains small amounts of polyvinyl alcohol and polyvinyl acetate. The production of the glue from potato starch is particularly cheap. In order to obtain a higher quality natural glue, corn starch is particularly suitable. The amount of water in the glue is preferably about 50% before use.

Das Plattenmaterial enthält nach der Fertigung im trockenen Zustand insgesamt etwa 10% Bindemittel.After production, the board material contains a total of about 10% binder in the dry state.

Je nachdem ob es sich um Plattenmaterial mit wasserbasiertem Kaltleim oder um Plattenmaterial mit Schmelzleim handelt, wurden unterschiedliche erfindungsgemäße Verfahren zur Herstellung entwickelt:Depending on whether it is a board material with water-based cold glue or a board material with melt glue, different methods of manufacture according to the invention have been developed:

Beim Verfahren zur Herstellung von Plattenmaterial mit wasserbasiertem Kaltleim wird erfindungsgemaß der Karton mindestens von einer Rolle abgezogen oder von einem Stapel entnommen, mit Kaltleim beleimt, auf ein Plattenmaß zugeschnitten, lageweise aufeinandergelegt, eine vorgegebene Zeit verpreßt und anschließend zur Trocknung, voneinander beabstandet, gestapelt und belüftet.In the process for the production of board material with water-based cold glue, the cardboard is at least pulled off a roll or removed from a stack, glued with cold glue, cut to a board size, laid on top of one another, pressed together for a predetermined time and then dried, spaced apart, stacked and ventilated.

Die Preßzeit selbst dauert vorzugsweise etwa 2 bis 3 Minuten.The pressing time itself preferably takes about 2 to 3 minutes.

Das erfindungsgemäße Verfahren ist somit äußerst schnell und damit kostengünstig. Zudem können zum Pressen herkömmliche bekannte Werkzeuge eingesetzt werden. Zur Verkürzung der Trocknungszeit wird vorteilhafterweise das Plattenmaterial für eine vorgegebene Zeit einer ersten Preßphase mit einer Heiztemperatur entsprechend der Verdampfungstemperatur der Bindemittelfeuchtigkeit bei dem jeweiligen Preßdruck unterzogen und danach einer eine vorgegebene Zeit dauernden Entlüftungs- und Trocknungsphase ausgesetzt, worauf dann wiederum eine zweite kalte Preßphase für eine vorgegebene Zeit und die anschließend beabstandete Stapelung und Nachtrocknung folgt. Die warme Preßphase muß zeitlich so bemessen sein, daß ein ausreichender Wärmefluß in den gesamten Materialblock stattfindet. Sie ist damit u.a. abhängig von dem gewählten Material, insbesondere der Dicke der Karton- oder Papplagen. Die Kaltpreßzeit dauert hierbei etwa 2 bis 3 Minuten. Die Entlüftungs- und Trocknungsphase zwischen den beiden Preßvorgängen beträgt vorzugsweise etwa 15 Sekunden.The method according to the invention is therefore extremely fast and therefore inexpensive. Conventional known tools can also be used for pressing. To shorten the drying time, the plate material is advantageously subjected to a first pressing phase with a heating temperature corresponding to the evaporation temperature of the binder moisture at the respective pressing pressure for a predetermined time and then exposed to a deaeration and drying phase which lasts for a predetermined time, whereupon a second cold pressing phase for a second time predetermined time and the subsequent spaced stacking and drying follows. The warm press phase must be timed so that there is sufficient heat flow in the entire material block. It is therefore dependent, among other things, on the material selected, in particular the thickness of the cardboard or cardboard layers. The cold pressing time takes about 2 to 3 minutes. The venting and drying phase between the two pressing operations is preferably about 15 seconds.

Um die Produktionsrate zu erhöhen, ist es möglich, daß beim Verpressen mehrere Platten unter Einschuß von Trennmaterial, z. B. Antihaftfolie oder Metallplatten, aufeinander gestapelt sind. Es werden dann mit einem Preßvorgang gleich mehrere Platten gefertigt.In order to increase the production rate, it is possible that several plates with the injection of separating material, e.g. B. non-stick film or metal plates are stacked on top of each other. Several plates are then produced in one pressing process.

Bei einem Warmpressen ist es vorteilhaft, wenn auch die dazwischenliegenden Trennplatten beheizt werden.In the case of hot pressing, it is advantageous if the intermediate separating plates are also heated.

Vorzugsweise werden die trennenden Metallplatten während der Entlüftungs- und Trocknungsphase voneinander beabstandet gehalten, um eine bessere Belüftung und schnellere Trocknung zu erreichen.The separating metal plates are preferably kept apart from one another during the venting and drying phase in order to achieve better ventilation and faster drying.

Bei dem erfindungsgemäßen Verfahren findet die Verfestigung des Plattenmaterials somit nicht in der Presse sondern erst beim Abkühlen oder Trocknen statt. Dies verhindert, daß der beim Pressen entstehende Dampf die Bindewirkung des Leims herabsetzt oder zerstört. Es hat weiterhin den Vorteil, daß die Gesamtzeit in der Presse relativ kurz gehalten wird, so daß die Produktionsrate pro Presse relativ hoch ist. Es muß dann nur entsprechender Raum für die Trocknung und Lagerung vorhanden sein.In the method according to the invention, the plate material is therefore not solidified in the press but only when it cools or dries. This prevents the steam generated during pressing from binding the glue degraded or destroyed. It also has the advantage that the total time in the press is kept relatively short, so that the production rate per press is relatively high. There then only has to be adequate space for drying and storage.

Bei dem erfindungsgemäßen Verfahren zur Herstellung von Plattenmaterial mit einem Schmelzleim wird der Karton von mindestens einer Rolle abgezogen oder von einem Stapel entnommen, auf ein Plattenmaß zugeschnitten, lagenweise unter Einschluß des Leims aufeinandergelegt und einer Heißpressung so lange unterzogen, bis der Schmelzleim vollständig aufgeschmolzen ist, wonach eine Stapelung und Abkühlung zur Verfestigung erfolgt.In the method according to the invention for the production of sheet material with a melt glue, the cardboard is pulled off from at least one roll or removed from a stack, cut to a sheet size, laid on top of one another in layers including the glue and subjected to hot pressing until the melt glue has melted completely followed by stacking and cooling for solidification.

Auch hier erfolgt die Verfestigung somit nicht in der Presse sondern erst beim Abkühlen oder Trocknen.Here too, solidification does not take place in the press but only when it cools or dries.

Zur Herstellung von Plattenmaterial mit einem Wabenkern wird der expandierte und verfestigte Wabenkern, die Kartonlagen und ggf. die Sperrholzschicht und/oder das Furnier mit Kaltleim beleimt und lagenweise aufeinandergelegt in eine Presse eingebracht und für eine vorgegebene Zeit einer Kaltpressung unterzogen, worauf eine beabstandete Stapelung und Trocknung erfolgt. Auch hier beträgt die Kaltpreßzeit vorzugsweise 2 bis 3 Minuten.To produce sheet material with a honeycomb core, the expanded and solidified honeycomb core, the cardboard layers and possibly the plywood layer and / or the veneer are glued with cold glue and placed one on top of the other in a press and subjected to cold pressing for a predetermined time, followed by spaced stacking and Drying takes place. Here too, the cold pressing time is preferably 2 to 3 minutes.

Die Verfestigung des expandierten Wabenkerns vor dem Belegen und Verpressen mit den Kartonlagen kann dadurch erreicht werden, daß das Wabenmaterial mit einem Naturtränkstoff, vorzugsweise wasserbasiertem Kaltleim, behandelt wird und dann getrocknet wird.The expansion of the expanded honeycomb core before covering and pressing with the cardboard layers can be achieved by treating the honeycomb material with a natural impregnating material, preferably water-based cold glue, and then drying it.

Vorzugsweise werden bei der Kaltpressung die Preßbacken hierbei auf ein vorgegebenes Plattendickenmaß zusaιr.mengefahren, das etwas kleiner ist als die Gesamtdicke des Wabenkerns mit den Kartonlagen und ggf. den Sperrholzschichten und/oder ggf. den Furnierlagen vor der Verpressung.During the cold pressing, the pressing jaws are preferably moved to a predetermined plate thickness dimension which is somewhat smaller than the total thickness the honeycomb core with the cardboard layers and possibly the plywood layers and / or the veneer layers before the pressing.

Da das Grundmaterial (Laminat) saugfähiger als anderes Trägermaterial wie z. B. Sperrholz oder Spanplatten ist, besteht hier die Möglichkeit, eine beleimte Dekorschicht, auch Furnier, darauf aufzuziehen, wonach dieεe sich ohne anschließende Pressenbehandlung beim Abbinden des Leims vollständig glatt zieht. Dies hat den Vorteil, daß ein weiterer Arbeitsschritt und Werkzeugkosten eingespart werden und zudem bei einem Recycling die Dekorschicht problemlos vom Trägermaterial getrennt werden kann.Since the base material (laminate) is more absorbent than other carrier material such. B. plywood or chipboard, there is the possibility here to glue a glued decorative layer, including veneer, after which dieεe pulls completely smooth without subsequent press treatment when setting the glue. This has the advantage that a further work step and tool costs can be saved and, in addition, the decorative layer can be separated from the carrier material without problems during recycling.

Bei entsprechend geformten Preßwerkzeugen bzw. bei der Herstellung von Platten mit Wabenkern, auch mit einem entsprechend vorgeformtem expandierten Papierwabenkern, ist es selbstverständlich auch möglich, derartiges Plattenmaterial mit einer vorgegebenen gewünschten Form zu erzeugen.In the case of appropriately shaped pressing tools or in the production of panels with a honeycomb core, also with a correspondingly preformed expanded paper honeycomb core, it is of course also possible to produce such panel material with a predetermined desired shape.

Vorteilhaft läßt sich in die Oberfläche eine Kassettenstruktur einbringen, indem die Ränder der abzusenkenden Zone eingeschnitten werden und beim Pressen durch entsprechede Einsätze im Werkzeug die freigeschnittenen Bereiche durch Zusammendrücken des Wabenzellkerns abgesenkt werden. Die Ränder der abgesenkten Bereiche werden vorteilhaft mit Profilleisten verkleidet. Dies können z. B. etwa Z-förmige Holzprofilleisten sein.A cassette structure can advantageously be introduced into the surface by cutting in the edges of the zone to be lowered and, during pressing, the cut-out areas are lowered by pressing the honeycomb cell core through appropriate inserts in the tool. The edges of the lowered areas are advantageously clad with profile strips. This can e.g. B. be about Z-shaped wooden profile strips.

Die Dekorprofilleisten sowie seitenstabilisierende Kanten um die zugeschnittene Platte können vorteilhafterweise auch schon vor oder beim Pressvorgang mit eingebracht und befestigt werden. Die Erfindung wird im folgenden an einigen Ausführungsbeispielen unter Hinweis auf die beigefügten Zeichnungen näher erläutert. Es stellen dar:The decorative profile strips and side-stabilizing edges around the cut plate can advantageously also be introduced and fastened before or during the pressing process. The invention is explained in more detail below using some exemplary embodiments with reference to the accompanying drawings. They represent:

Fig. 1 eine perspektivische Ansicht eines Stücks erfindungsgemäßen Plattenmaterials aus zwei Lagen Karton,1 is a perspective view of a piece of sheet material according to the invention from two layers of cardboard,

Fig. 2 eine perspektivische Ansicht eines erfindungsgemäßen Plattenmaterials, bestehend aus zwei Lagen Karton und einer Dekorschicht aus Furnier,2 is a perspective view of a sheet material according to the invention, consisting of two layers of cardboard and a decorative layer made of veneer,

Fig. 3 eine perspektivische Ansicht eines erfindungsgemäßen Plattenmaterials aus drei Lagen Karton und einer Dekor-Deckschicht aus Sperrholz,3 is a perspective view of a sheet material according to the invention made of three layers of cardboard and a decorative cover layer made of plywood,

Fig. 4 eine perspektivische Ansicht mit Teilschnitt eines Stück Plattenmaterials mit einem Kern aus expandiertem Papierwabenmaterial und ober- und unterseitig jeweils zwei Lagen beleimten Karton,4 is a perspective view with partial section of a piece of sheet material with a core made of expanded paper honeycomb material and two layers of glued cardboard on the top and bottom,

Fig. 5 eine perspektivische Ansicht eines Schnitts durch ein Stück Plattenhalbzeug mit einer Dekorausnehmung, z. B. für eine Kassettentür; rechts von der gestrichelten Linie der rechte Rand der kassettenförmigen Ausnehmung mit bereits eingesetzter Dekorprofilrahmenleiste, links von der gestrichelten Linie der linke Rand der Kassettenausnehmung vor Einsetzen der Dekorprofilrahmenleiste.Fig. 5 is a perspective view of a section through a piece of semi-finished plate with a decorative recess, for. B. for a cassette door; to the right of the dashed line is the right edge of the cassette-shaped recess with the decorative profile frame strip already inserted, to the left of the dashed line is the left edge of the cassette recess before inserting the decorative profile frame strip.

Das erfindungsgemäße Plattenmaterial (P, P*) besteht aus mehreren Lagen Karton (Kl, Kl*; K2, K2*, K3) , Pappe od. dgl., welche unter Einfügung von einem Bindemittel (B) zu Laminat verpreßt hergestellt ist. Der rohe Karton (Kl, Kl*; K2, K2*, K3) ist weitgehend leimfrei und besteht im wesentlichen aus leimfreier Zellulose. Hierbei handelt es sich vorzugsweise um recyceltes Material. Der Karton (Kl, Kl*; K2, K2*, K3) hat in den vorliegenden Ausführungsbeispielen ein Flächengewicht von 350 bis 380 g/m2 und weist eine Dicke von ca. 0,57 mm auf .The sheet material (P, P *) according to the invention consists of several layers of cardboard (Kl, Kl *; K2, K2 *, K3), cardboard or the like, which is pressed into laminate by inserting a binder (B). The raw cardboard (Kl, Kl *; K2, K2 *, K3) is largely glue-free and consists essentially of glue-free cellulose. This is preferably recycled material. The cardboard (Kl, Kl *; K2, K2 *, K3) has a basis weight of 350 to 380 g / m 2 in the present exemplary embodiments and a thickness of approximately 0.57 mm.

Bei dem Bindemittel (B) handelt es sich um einen im wesentlichen aus einem Naturstoff bestehenden Leim. Dieser Leim kann sowohl ein Schmelzleim als auch ein Kaltleim sein und ist vorzugsweise aus Stärke, insbesondere Mais- oder Kartoffelstärke, hergestellt. Er enthält geringe Mengen Polyvinylkohol und Polyvinylacetat. Vor der Anwendung enthält der Leim ca. 50% Wasseranteil. Der Leim kann sowohl alε langzeitstabile Emulsion oder kurz vor der Verwendung als kurzzeitstabile Dispersion ohne Stabilisatoren aufbereitet sein.The binder (B) is a glue consisting essentially of a natural product. This glue can be both a melt glue and a cold glue and is preferably made from starch, in particular corn or potato starch. It contains small amounts of polyvinyl alcohol and polyvinyl acetate. Before use, the glue contains about 50% water. The glue can be prepared either as a long-term stable emulsion or shortly before use as a short-term stable dispersion without stabilizers.

Daε fertige Plattenmaterial (P, P*) enthält ungefähr 10% Bindemittel (B) .The finished plate material (P, P *) contains approximately 10% binder (B).

Gemäß einem Ausführungsbeispiel nach Fig. 4 weist das Plattenmaterial (P, P*) einen Kern (W) aus expandiertem Wabenmaterial (W) auf. Die Wabenzellen (WZ) sind jeweils beidseitig mit mehreren, vorzugsweise zwei, Lagen beleimten Karton (Kl*, K2*) verpreßt und im kalten trockenen Zustand verfestigt.4, the plate material (P, P *) has a core (W) made of expanded honeycomb material (W). The honeycomb cells (WZ) are pressed on both sides with several, preferably two, layers of glued cardboard (Kl *, K2 *) and solidified in the cold, dry state.

Auch das Papierwabenmaterial (W) besteht aus Recyclingmaterial und ist mit einem Naturtränkstoff, z. B. wasserbasiertem Kaltleim, behandelt und getrocknet verfestigt. Gemäß den Ausführungsbeispielen nach Fig. 2 und Fig. 3 kann das Plattenmaterial (P, P*) auch zumindest einseitig mit einer Sperrholzschicht (SF) oder einem Furnier (F) verleimt und verpreßt sein, um so eine entsprechende Dekor-Oberfläche zu erhalten. Alternativ kann das Material (P, P*) natürlich auch lackiert werden oder kunststoffbeschicht werden, sofern dies gewünscht wird.The paper honeycomb material (W) consists of recycled material and is made with a natural impregnating material, e.g. B. water-based cold glue, treated and dried solidified. According to the exemplary embodiments according to FIGS. 2 and 3, the plate material (P, P *) can also be glued and pressed at least on one side with a plywood layer (SF) or a veneer (F) in order to obtain a corresponding decorative surface. Alternatively, the material (P, P *) can of course also be lacquered or plastic coated, if this is desired.

Zur Herstellung des Plattenmaterials (P, P*) werden folgende erfindungsgemäße Verfahren verwendet.The following methods according to the invention are used to produce the plate material (P, P *).

Bei einem Bindemittel (B) in Form von wasserbasiertem Kaltleim wird der Karton (Kl, Kl*; K2 , K2*, K3 ) von einer Rolle abgezogen, dann mit dem Kaltleim beleimt und auf ein Plattenmaß zugeschnitten. Diese Lagen werden dann aufeinandergelegt und etwa 2 bis 3 Minuten verpreßt. Anschließend werden die fertigen Platten (P) zur Trocknung voneinander beabstandet gestapelt und belüftet.In the case of a binder (B) in the form of water-based cold glue, the cardboard (Kl, Kl *; K2, K2 *, K3) is pulled off a roll, then glued with the cold glue and cut to a sheet size. These layers are then placed on top of each other and pressed for about 2 to 3 minutes. The finished plates (P) are then stacked at a distance from one another for drying and aerated.

Um mehrere Platten (P) gleichzeitig pressen zu können, können diese beim Pressen unter Einschuß von Trennmaterial, insbesondere Antihaftfolie oder Metallplatten, auch aufeinandergestapelt sein.In order to be able to press several plates (P) at the same time, they can also be stacked on top of one another when pressing with the use of release material, in particular non-stick film or metal plates.

Um die Trocknungs- und Belüftungszeit zu verkürzen, kann das Plattenmatrial (P, P*) zunächst auch für einige Minuten einer ersten Preßphase mit einer Heiztemperatur entsprechend der Verdampfungstemperatur der Bindemittelfeuchtigkeit bei dem jeweiligen Preßdruck unterzogen werden. Danach wird das Plattenmaterial (P, P*) etwa 15 Sekunden einer Entlüftungs¬ und Trocknungsphase ausgesetzt. Anschließend folgt dann eine zweite kalte Preßphase für einige Minuten und schließlich die beabstandete Stapelung und Nachtrocknung.In order to shorten the drying and ventilation time, the plate material (P, P *) can also be subjected to a first pressing phase with a heating temperature corresponding to the evaporation temperature of the binder moisture at the respective pressing pressure for a few minutes. The plate material (P, P *) is then exposed to a venting and drying phase for about 15 seconds. This is followed by a second cold pressing phase for a few minutes and finally the spaced stacking and post-drying.

Werden bei diesem Verfahren mehrere Platten (P) gleichzeitig in einer Presse gepreßt, so werden vorzugsweise die trennenden Metallplatten während der Entlüftungs- und Trocknungsphase voneinander beabstandet gehalten. Als Trennplatten bietet sich hier auch an, evtl. beheizbare Metallplatten zu verwenden.If several plates (P) are pressed simultaneously in one press in this method, then preferably the separating metal plates kept apart during the venting and drying phase. It is also advisable to use heatable metal plates as separating plates.

Bei Verwendung von Schmelzleim alε Bindemittel (B) wird der Karton (Kl, Kl*; K2, K2*, K3) von einer Rolle abgezogen und mit dem Schmelzleim beleimt. Anschließend wird der Karton (Kl, Kl*; K2, K2*, K3) auf ein Plattenmaß zugeschnitten, lagenweise unter Einschluß des Leimes aufeinandergelegt und dann einer Heißpressung so lange unterzogen, bis der Schmelzleim vollständig aufgeschmolzen ist. Anschließend erfolgt dann eine Stapelung und Abkühlung zur Verfestigung.When using melt glue as the binder (B), the cardboard (Kl, Kl *; K2, K2 *, K3) is pulled off a roll and glued with the melt glue. Then the cardboard (Kl, Kl *; K2, K2 *, K3) is cut to a sheet size, laid on top of each other, including the glue, and then subjected to hot pressing until the melt glue has melted completely. This is then followed by stacking and cooling for solidification.

Alternativ kann der Schmelzleim selbstverständlich auch nach dem Zuschnitt auf die einzelnen Kartonabschnitte aufgetragen werden oder in Form von Schmelzleimfolie beim Aufeinanderlegen der Kartonabschnitte eingeschossen werden.Alternatively, of course, the melt glue can also be applied to the individual cardboard sections after cutting or can be shot in the form of melt glue film when the cardboard sections are laid one on top of the other.

Bei der Herstellung des dickeren Plattenmaterials (P, P*) mit Wabenkern (W) wird zunächst das Wabenmaterial (W) auf das gewünschte Maß expandiert und durch Behandlung mit einem Naturtränkstoff, vorzugsweise wasserbasiertem Kaltleim, sowie anschließende Trocknung, verfestigt. Der Wabenkern (W) , die Kartonlagen (Kl, Kl*, K2 , K2*) und ggf. die Sperrholzschicht (SF) bzw. das Furnier (F) werden dann mit Kaltleim beleimt und lageweise aufeinandergelegt. Diese Schichtung wird dann gemeinsam in eine Presse eingebracht und für 2 bis 3 Minuten einer Kaltpressung unterzogen. Anschließend folgt wieder die beabstandete Stapelung und Trocknung.In the manufacture of the thicker board material (P, P *) with honeycomb core (W), the honeycomb material (W) is first expanded to the desired size and solidified by treatment with a natural impregnation material, preferably water-based cold glue, and subsequent drying. The honeycomb core (W), the cardboard layers (Kl, Kl *, K2, K2 *) and, if applicable, the plywood layer (SF) or the veneer (F) are then glued with cold glue and placed one on top of the other. This layering is then placed together in a press and subjected to cold pressing for 2 to 3 minutes. Then the spaced stacking and drying follows again.

Vorzugsweise werden hierbei bei der Kaltpressung die Preßbacken auf ein vorgegebenes Plattendickenmaß zusammengefahren, das etwas kleiner ist als die Gesamtdicke des Wabenkerns (W) mit den Kartonlagen (Kl*, K2*) und ggf. den Sperrholzschichten (SF) bzw. den Furnierlagen (F) vor der Verpressung. Selbstverständlich ist es auch bei der Herstellung dieses dicken Plattenmaterials (P, P*) möglich, mehrere Platten (P) gleichzeitig in einer Presse unterDuring the cold pressing process, the press jaws are preferably brought together to a predetermined sheet thickness, which is slightly less than the total thickness of the honeycomb core (W) with the cardboard layers (Kl *, K2 *) and, if applicable, the plywood layers (SF) or the veneer layers (F ) before pressing. Of course, it is also possible to manufacture this thick sheet material (P, P *) several plates (P) at the same time in a press

Verwendung von Trennmaterial zu fertigen. In diesem Fall muß dann entsprechend das Plattendickemaß der Preßbacken eingestellt werden.Use release material to manufacture. In this case the plate thickness of the press jaws must be adjusted accordingly.

Um eine möglichst hohe Stabilität des Wabenkerns (W) zu erhalten, ist es vorteilhaft, das Plattendickenmaß so zu wählen, daß beim Presεen das Wabenmaterial gerade nicht eingeknickt wird.In order to obtain the highest possible stability of the honeycomb core (W), it is advantageous to choose the plate thickness dimension in such a way that the honeycomb material is not kinked during pressing.

Das beschriebene Verfahren kann statt mit einer oder mehreren Einzelpressen, die im Takt beschichtet werden, selbstverständlich auch ohne weiteres vom Fachmann auf einen kontinuierlich arbeitenden Bandlaminator übertragen werden, an dessen Ausgang schließlich die Trennung in Plattenabschnitte erfolgt.Instead of using one or more individual presses that are coated in cycles, the method described can of course also be readily transferred by a person skilled in the art to a continuously operating band laminator, at the output of which the separation into plate sections finally takes place.

Bei einem speziellen Ausführungsbeispiel gemäß Fig. 5 werden die Karton- bzw. Furnierlagen (63, 64) in mindestens einem Teilbereich (32a) umlaufend aufgetrennt und in diesem Teilbereich (32a) die Wabenzellen (4*) zusammengepreßt und verdichtet. Der getrennte Kartonlagenbereich (64) wird dadurch entsprechend kassettenartig eingesenkt. Entlang der Randzone, vorzugsweise umlaufend des gesamten Teilbereichs, wird eine Deckprofilleiste (32d) eingeklebt, die die Wabenzellen (4) seitlich abschließt. Dies kann, wie in Fig. 5 gezeigt, z. B. eine etwa Z-förmige Hohlprofilleiste sein, dessen oberer Schenkel auf der oberen Fläche (63) des Plattenmaterials aufliegt und dessen unterer Schenkel (62) auf der abgesenkten Oberfläche (64) des Plattenmaterials aufliegt. Selbstverständlich ist es natürlich ebenso möglich, auf diese Weise hervorstehende Bereiche herzustellen, indem die Umgebung um diesen Bereich entsprechend abgesenkt wird. In a special embodiment according to FIG. 5, the cardboard or veneer layers (63, 64) are separated all around in at least one partial area (32a) and the honeycomb cells (4 *) are pressed together and compressed in this partial area (32a). The separated cardboard layer area (64) is accordingly sunk in the manner of a cassette. A cover profile strip (32d), which closes off the honeycomb cells (4) laterally, is glued in along the edge zone, preferably all around the entire partial area. This can, as shown in Fig. 5, e.g. B. be an approximately Z-shaped hollow profile strip, the upper leg rests on the upper surface (63) of the plate material and the lower leg (62) rests on the lowered surface (64) of the plate material. Of course, it is of course also possible to produce protruding areas in this way by lowering the environment around this area accordingly.

Claims

Patentansprüche claims 1. Plattenmaterial (P, P*), insbesondere für die Möbelherstellung, das aus mehreren Lagen Karton (Kl, Kl*; K2, K2*, K3) , Pappe, od. dgl., unter Einfügung von einem Bindemittel (B) zu Laminat verpreßt, hergestellt ist, dadurch gekennzeichnet, daß der Karton (Kl, Kl*; K2 , K2*, K3) und/oder die Pappe weitgehend leimfrei ist und das Bindemittel (B) ein im wesentlichen aus einem Naturstoff bestehender Leim ist, der nach dem Verpressen im kalten, trockenen Zustand verfestigt ist.1. Board material (P, P *), in particular for furniture production, consisting of several layers of cardboard (Kl, Kl *; K2, K2 *, K3), cardboard, or the like, with the addition of a binder (B) Laminate is pressed, produced, characterized in that the cardboard (Kl, Kl *; K2, K2 *, K3) and / or the cardboard is largely glue-free and the binder (B) is a glue consisting essentially of a natural material which solidified after pressing in a cold, dry state. 2. Plattenmaterial nach Anspruch 1, dadurch gekennzeichnet, daß der Karton (Kl, Kl*; K2, K2*, K3) im wesentlichen aus leimfreier Zellulose, insbesondere aus recyceltem Material, besteht.2. Sheet material according to claim 1, characterized in that the cardboard (Kl, Kl *; K2, K2 *, K3) consists essentially of glue-free cellulose, in particular from recycled material. 3. Plattenmaterial nach Anspruch 1 oder 2 , dadurch gekennzeichnet, daß der Karton (Kl, Kl*; K2 , K2*, K3) ein Flächengewicht von 350 - 380 g/crm und eine Dicke von ca. 0,57 mm aufweist.3. Plate material according to claim 1 or 2, characterized in that the cardboard (Kl, Kl *; K2, K2 *, K3) has a weight per unit area of 350-380 g / crm and a thickness of approximately 0.57 mm. 4. Plattenmaterial nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß der Leim ein Schmelzleim oder ein Kaltleim aus Stärke, insbesondere Mais- oder Kartoffelstärke, ist und geringe Mengen Polyvinylalkohol und Polyvinylacetat enthält.4. Sheet material according to one of the preceding claims, characterized in that the glue is a melt glue or a cold glue made of starch, in particular corn or potato starch, and contains small amounts of polyvinyl alcohol and polyvinyl acetate. 5. Plattenmaterial nach Anspruch 4, dadurch gekennzeichnet, daß der Leim vor der Anwendung etwa 50% Wasseranteil enthält und daß das fertige, getrocknete Plattenmaterial (P, P*) etwa 10% Bindemittel (B) enthält.5. Plate material according to claim 4, characterized in that the glue contains about 50% water before use and that the finished, dried plate material (P, P *) contains about 10% binder (B). 6. Plattenmaterial nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß es einen Kern (W) aus expandiertem Papierwabenmaterial (W) enthält, deren Wabenzellen (WZ) beidseitig jeweils mit mehreren, vorzugsweise zwei, Lagen beleimten Karton (Kl, Kl*, K2, K2*) verpreßt ist, der im kalten, trockenen Zustand verfestigt ist.6. Plate material according to one of the preceding claims, characterized in that it contains a core (W) made of expanded paper honeycomb material (W), the honeycomb cells (WZ) is pressed on both sides with several, preferably two, layers of glued cardboard (Kl, Kl *, K2, K2 *), which is solidified in the cold, dry state. 7. Plattenmaterial nach Anspruch 6, dadurch gekennzeichnet, daß das Papierwabenmaterial (W) aus Recyclingmaterial besteht und mit einem Naturtränkstoff behandelt und getrocknet verfestigt ist und der Naturtränkstoff vorzugseise ein wasserbasierter Kaltleim ist.7. Sheet material according to claim 6, characterized in that the paper honeycomb material (W) consists of recycling material and is treated with a natural impregnation material and solidified dry and the natural impregnation material is preferably a water-based cold glue. 8. Plattenmaterial nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, daß dasselbe mindestens einseitig mit einer Sperrholzschicht (SF) und/oder einem Furnier (F) verleimt und verpreßt ist.8. Panel material according to one of the preceding claims, characterized in that the same is glued and pressed at least on one side with a plywood layer (SF) and / or a veneer (F). 9. Plattenmaterial nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß mindestens ein Teilbereich (32a) der Kartonlagen (63, 64) umlaufend aufgetrennt ist und die darunterliegenden Wabenzellen (4*) verdichtet und der getrennte Kartonlagenbereich (64) entsprechend kassettenartig eingesenkt ist.9. Panel material according to one of claims 6 to 8, characterized in that at least a partial area (32a) of the cardboard layers (63, 64) is separated all round and the underlying honeycomb cells (4 *) compacted and the separate cardboard layer area (64) sunk accordingly cassette-like is. 10. Plattenmaterial nach Anspruch 9, dadurch gekennzeichnet, daß die Randzone des eingesenkten Kartonlagenbereicheε (64) zumindest teilweise mit einer Deckprofilleiste (32d) besetzt ist, die die Wabenzellen (4) seitlich abschließt.10. Plate material according to claim 9, characterized in that the edge zone of the recessed cardboard layer areas (64) is at least partially occupied with a cover profile strip (32d) which laterally closes the honeycomb cells (4). 11. Verfahren zur Herstellung von Plattenmaterial mit wasserbasiertem Kaltleim nach einem der vorstehenden Anεprüche, dadurch gekennzeichnet, daß der Karton (Kl, Kl*; K2 , K2*, K3 ) mindestenε von einer Rolle abgezogen oder von einem Stapel entnommen wird, mit Kaltleim beleimt, auf ein Plattenmaß zugeschnitten, lageweise aufeinandergelegt, eine vorgegebene Zeit verpreßt und anschließend zur Trocknung voneinander beabstandet gestapelt und belüftet wird.11. A process for the production of sheet material with water-based cold glue according to one of the preceding claims, characterized in that the cardboard (Kl, Kl *; K2, K2 *, K3) is at least removed from a roll or removed from a stack, glued with cold glue , cut to a plate size, stacked on top of each other, one predetermined time is pressed and then stacked spaced apart for drying and aerated. 12. Verfahren nach Anspruch 11, dadurch gekennzeichnet, daß beim Verpressen mehrere Platten (P) unter Einschuß von Trennmaterial, insbeεondere Antihaftfolie oder Metallplatten, aufeinander geεtapelt sind.12. The method according to claim 11, characterized in that when pressing a plurality of plates (P) are stacked on top of one another with the release of separating material, in particular non-stick film or metal plates. 13. Verfahren nach Anspruch 11 oder 12, dadurch gekennzeichnet, daß das Plattenmaterial (P) für eine vorgegebene Zeit einer ersten Preßphase mit einer13. The method according to claim 11 or 12, characterized in that the plate material (P) for a predetermined time of a first pressing phase with a Heiztemperatur entsprechend der Verdampfungstemperatur der Bindemittelfeuchtigkeit bei dem jeweiligen Preßdruck unterzogen wird und danach einer eine vorgegebene Zeit dauernden Entlüftungs- und Trocknungsphase ausgesetzt wird, worauf eine zweite, kalte Preßphase für eine vorgegebene Zeit und die anschließende beabstandete Stapelung und Nachtrocknung folgt.Heating temperature corresponding to the evaporation temperature of the binder moisture is subjected to the respective pressing pressure and then exposed to a ventilation and drying phase lasting a predetermined time, followed by a second, cold pressing phase for a predetermined time and the subsequent spaced stacking and drying. 14. Verfahren zur Herstellung von Plattenmaterial mit einem Schmelzleim nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß der Karton (Kl, Kl*; K2, K2*, K3) von mindestens einer Rolle abgezogen oder von einem Stapel entnommen wird, auf ein Plattenmaß zugeschnitten, lagenweise unter Einschluß des Leimes aufeinandergelegt und einer Heißpressung so lange unterzogen wird, bis der Schmelzleim vollständig aufgeschmolzen ist, wonach eine Stapelung und Abkühlung zur Verfestigung erfolgt.14. A method for producing plate material with a melt glue according to one of claims 1 to 8, characterized in that the cardboard (Kl, Kl *; K2, K2 *, K3) is removed from at least one roll or removed from a stack a sheet size is cut, placed in layers including the glue and subjected to hot pressing until the melting glue has melted completely, after which it is stacked and cooled to solidify. 15. Verfahren zur Herstellung von Plattenmaterial nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß der expandierte und verfestigte Wabenkern (W) die Kartonlagen (Kl, Kl*, K2, K2*) und ggf. die Sperrholzschicht (SF) und/oder das Furnier (F) mit Kaltleim beleimt und lagenweise aufeinandergelegt in eine Presse eingebracht und für eine vorgegebene Zeit einer Kaltpressung unterzogen wird, worauf eine beabstandete Stapelung und Trocknung erfolgt.15. A process for the production of plate material according to one of claims 6 to 8, characterized in that the expanded and solidified honeycomb core (W), the cardboard layers (Kl, Kl *, K2, K2 *) and optionally the plywood layer (SF) and / or the veneer (F) glued with cold glue and placed in layers in a press and for one predetermined time is subjected to cold pressing, followed by spaced stacking and drying. 16. Verfahren nach einem der Ansprüche 14 oder 15, dadurch gekennzeichnet, daß die Karton- und/oder Furnierlagen (63, 64) in mindestens einem Teilbereich (32a) umlaufend aufgetrennt werden und in den Teilbereich (32a) die Wabenzellen (4*) zusammengepreßt werden.16. The method according to any one of claims 14 or 15, characterized in that the cardboard and / or veneer layers (63, 64) are separated all around in at least one partial area (32a) and in the partial area (32a) the honeycomb cells (4 *) be pressed together. 17. Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß entlang mindestens eines Teils der Randzone des Teilbereichs (32a) eine Deckprofilleiste (32d) eingeklebt wird. 17. The method according to claim 16, characterized in that a cover profile strip (32d) is glued in at least part of the edge zone of the partial region (32a).
PCT/EP1995/004963 1995-11-30 1995-12-15 Recyclable laminate and method of manufacturing the same Ceased WO1997019814A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU43453/96A AU4345396A (en) 1995-11-30 1995-12-15 Recyclable laminate and method of manufacturing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995144653 DE19544653C1 (en) 1995-11-30 1995-11-30 Mfg. stable and lightweight board e.g. for mfg. furniture
DE19544653.4 1995-11-30

Publications (1)

Publication Number Publication Date
WO1997019814A1 true WO1997019814A1 (en) 1997-06-05

Family

ID=7778813

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/004963 Ceased WO1997019814A1 (en) 1995-11-30 1995-12-15 Recyclable laminate and method of manufacturing the same

Country Status (3)

Country Link
AU (1) AU4345396A (en)
DE (1) DE19544653C1 (en)
WO (1) WO1997019814A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2446055C2 (en) * 2007-07-20 2012-03-27 Фриц Эггер Гмбх Унд Ко.Ог Light construction plate

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1015482A3 (en) * 2003-04-28 2005-04-05 Polyvision Nv Method for manufacturing of visual communication panels and device used thereby.
AT413088B (en) * 2004-07-30 2005-11-15 Theurl Leimholzbau Gmbh METHOD FOR THE TOUCH-FREE APPLICATION OF DOSED ADHESIVE TINS ON THE STRIP-TREATED NARROW SURFACE OF THE WORKPIECE
DE102004040603A1 (en) * 2004-08-21 2006-03-09 Gaudes, Joachim Use of hollow profiles made from cardboard or hard paper for furniture
DE202004015471U1 (en) 2004-10-04 2006-02-09 M. Kaindl Kommanditgesellschaft Lightweight panel and a panel with a lightweight board
WO2008156351A1 (en) * 2007-06-19 2008-12-24 Hock Chye Ng Composite building component for constructional assembly and method of manufacturing thereof
EP2283192B1 (en) * 2008-03-28 2018-08-29 Noble Environmental Technologies Corporation Engineered molded fiberboard panels and methods of making and using the same
EP2367989B1 (en) * 2008-12-19 2018-04-25 Inter IKEA Systems B.V. Method for manufacturing of building units for furniture
CN102224315A (en) * 2009-01-09 2011-10-19 黑蒂赫-海因泽有限及两合公司 Fitting furniture part piece of furniture and method for producing a plate
ITVI20090279A1 (en) * 2009-11-20 2011-05-21 Doorlux Srl STRATIFIED ELEMENT FOR LIGNEED CONSTRUCTION OR COATINGS.
DE202010007093U1 (en) 2010-05-21 2010-08-26 Hink, Torsten Flexible furniture component and piece of furniture with such furniture component
DE102010021284A1 (en) 2010-05-21 2011-11-24 Torsten Hink Furniture component for formation of furniture pieces, is made of foldable core material, such as cardboard or paper, and has stable layer on top and bottom of foldable core material
FR2963729B1 (en) * 2010-08-12 2013-04-12 Menuiserie Letondor MASSIVE FURNITURE WITH HOLLOW STRUCTURE
FR3005974B1 (en) * 2013-05-27 2015-12-25 Gerard Sekrane BLOCK FOR THE THERMAL INSULATION OF A BUILDING WALL
US20150004355A1 (en) * 2013-06-28 2015-01-01 Signode Industrial Group Llc Void filler usable as a hollow door core
GB2543637B (en) 2015-09-11 2018-08-08 Jeld Wen Uk Ltd Method and system for assembly of recessed panel doors
US11559917B2 (en) 2020-05-08 2023-01-24 Jeld-Wen, Inc. Drop roller press and method of making recessed panel doors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498869A (en) * 1966-08-15 1970-03-03 Nippon Synthetic Chem Ind Method for bonding paperboards
EP0274789A2 (en) * 1986-12-18 1988-07-20 Koninklijke Nijverdal-Ten Cate N.V. Method for manufacturing a layered construction, and construction obtained thereby
EP0448344A2 (en) * 1990-03-20 1991-09-25 Green Bay Packaging Inc. Multiple ply paperboard product and method of making the same
US5383999A (en) * 1993-12-15 1995-01-24 Ta Yen Paper Box Container Co., Ltd. Method for manufacturing high hardness kraft paper-made board block
EP0665099A2 (en) * 1994-01-14 1995-08-02 Steinhoff-Laminat GmbH Process and device for the production of laminates and objects formed with and of these laminates

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516791C1 (en) * 1985-05-09 1987-01-22 Hukla Werke Gmbh Process for producing a hollow body as a side part for upholstered furniture
DE4335130A1 (en) * 1993-10-15 1995-04-20 Steinhoff Laminat Gmbh Method and device for producing molded parts from laminate and thereafter, and laminate molded part produced therewith

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3498869A (en) * 1966-08-15 1970-03-03 Nippon Synthetic Chem Ind Method for bonding paperboards
EP0274789A2 (en) * 1986-12-18 1988-07-20 Koninklijke Nijverdal-Ten Cate N.V. Method for manufacturing a layered construction, and construction obtained thereby
EP0448344A2 (en) * 1990-03-20 1991-09-25 Green Bay Packaging Inc. Multiple ply paperboard product and method of making the same
US5383999A (en) * 1993-12-15 1995-01-24 Ta Yen Paper Box Container Co., Ltd. Method for manufacturing high hardness kraft paper-made board block
EP0665099A2 (en) * 1994-01-14 1995-08-02 Steinhoff-Laminat GmbH Process and device for the production of laminates and objects formed with and of these laminates

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2446055C2 (en) * 2007-07-20 2012-03-27 Фриц Эггер Гмбх Унд Ко.Ог Light construction plate

Also Published As

Publication number Publication date
DE19544653C1 (en) 1997-04-03
AU4345396A (en) 1997-06-19

Similar Documents

Publication Publication Date Title
DE3712972C2 (en) Hot-pressed object and method for hot-pressing
WO1997019814A1 (en) Recyclable laminate and method of manufacturing the same
DE69522506T2 (en) Shaped, stackable wood composites with a bubble-free profile with uniform paintability
DE60103251T2 (en) Process for the production of artificially formed veneers or plates
DE2823669C3 (en) Heat-deformable synthetic resin laminated sheet and methods for deforming these sheets
DE2422311A1 (en) LAMINATED PANEL FOR THE MANUFACTURE OF DOOR LEAVES OR PANELS WITH A SOLID WOOD FRAME
DE60319615T2 (en) Process for the production of arched furniture components, in particular furniture doors, as well as articles manufactured by this process
DE69916470T2 (en) SQUEEGEE COVER AND METHOD FOR THE PRODUCTION THEREOF
DE2735261A1 (en) METHOD OF MANUFACTURING A COMPOSITE PANEL
DE69828687T2 (en) METHOD FOR PRODUCING A WOOD COMPOSITE FORM PRESSURE DOOR PANEL, RESULTING DOOR PANEL, AND DOOR THEREFOR
DE3142587A1 (en) Decorative laminate and process for its production
DE3636587C2 (en)
EP0785094B1 (en) Process for making a high pressure decorative laminate with a tile pattern
DE3809989A1 (en) DEVICE FOR PRODUCING A MULTI-LAYER WOOD PANEL
DE2537409A1 (en) Decorative laminated panel for furniture and interior decoration - combining phenolic resin and polyester to gain strength and flexibility
WO1997016308A1 (en) Method of producing shaped articles
DE2638787C3 (en) Process for the production of a furniture wall element or door leaf
DE1504385A1 (en) Method for producing a fiber layer
DE948357C (en) Process for achieving natural wood-like surfaces in wood-based panels
DE2729687C3 (en) Method for producing molded workpiece blanks for seat shells, cover plates or the like having deformations
DE3620192C2 (en)
DE2425059A1 (en) LAYERED COMPRESSED PANEL AND METHOD FOR MANUFACTURING IT
DE19901628C1 (en) Cladding material is in a sandwich structure of bonded prepared layers with a wear-resistant transparent cover layer with carrier and pattern layers on a board with an underlay
DE2529676C2 (en) Process for the production of a decorative laminate board
AT354744B (en) THIN LAYERED COMPRESSED MATERIAL WITH DECORATIVE SURFACE

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AU BB BG BR BY CA CN CZ EE FI GE HU IS JP KG KP KR KZ LK LS LT LV MD MG MK MN MX NO NZ PL RO RU SG SI SK TJ TT UA UG US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase

Ref country code: JP

Ref document number: 97520090

Format of ref document f/p: F

122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA