DE2524097A1 - Wood laminate with core of rods, and outer layers of woodchips - which are additionally laminated with a hardened plastics layer - Google Patents

Wood laminate with core of rods, and outer layers of woodchips - which are additionally laminated with a hardened plastics layer

Info

Publication number
DE2524097A1
DE2524097A1 DE19752524097 DE2524097A DE2524097A1 DE 2524097 A1 DE2524097 A1 DE 2524097A1 DE 19752524097 DE19752524097 DE 19752524097 DE 2524097 A DE2524097 A DE 2524097A DE 2524097 A1 DE2524097 A1 DE 2524097A1
Authority
DE
Germany
Prior art keywords
rods
wood
core
woodchips
laminated
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.)
Pending
Application number
DE19752524097
Other languages
German (de)
Inventor
Norbert Ing Grad Krausche
Kurt Ing Grad Vialon
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.)
MORALT KG AUGUST
Original Assignee
MORALT KG AUGUST
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 MORALT KG AUGUST filed Critical MORALT KG AUGUST
Priority to DE19752524097 priority Critical patent/DE2524097A1/en
Publication of DE2524097A1 publication Critical patent/DE2524097A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/042Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of wood
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/04Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B21/08Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B21/00Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/02Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board the layer being formed of fibres, chips, or particles, e.g. MDF, HDF, OSB, chipboard, particle board, hardboard
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02Composition of the impregnated, bonded or embedded layer
    • B32B2260/028Paper layer
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04Impregnation, embedding, or binder material
    • B32B2260/046Synthetic resin
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B32LAYERED PRODUCTS
    • B32BLAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00Properties of the layers or laminate
    • B32B2307/70Other properties
    • B32B2307/732Dimensional properties
    • B32B2307/734Dimensional stability

Landscapes

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

Abstract

A wood laminate comprises a core lamina composed of wooden rods on rodlets, and a lamina, on each side, consisting of woodchips. On top of these 2 woodchip layers, a layer of hardened resin is laminated. Used in joinery and furniture mfr. Improved dimensional stability and resistance to warping. Prodn. is relatively inexpensive. Holds screws securely. In practice, a laminate consisting of a core made up fo rods, and woodchip outer laminae, is covered with a resin (e.g. malemine resin) impregnated paper and press-laminated at >135 degrees C under >20 kg/m2, for up to 90 secs, pref. 60 secs.

Description

Holzwerkstoff-Schichtkörper und Verfahren zu ihrer Herstellung Die Erfindung betrifft neue Holzwerkstoff-Schichtkörper, enthaltend eine Stab- oder Stäbcheninnenlage aus Holz sowie ein Verfahren zu deren Herstellung.Laminated wood-based panels and process for their manufacture The invention relates to new laminated wood material, containing a rod or Inner stick layer made of wood and a method for their production.

Die seit langem als sogenannte Tischlerplatten bekannten Holzwerkstoff-Schichtkörper bestehen in ihrer einfachsten Ausführungsform aus einer Stab- oder Stäbcheninnenlage, z.B.The wood-based composite bodies, known for a long time as so-called blockboard panels consist in their simplest embodiment of a rod or rod inner layer, e.g.

aus Fichtenholz, die beidseitig mit Holzfurnieren beschichtet sind, Sie weisen gegenüber den gleichfalls bekannten Spanplatten vor allem eine bessere Biegefestigkeit und ein überlegenes Schraubenhaltevermdgen auf, Um ihre Einsatzmöglichkeiten zu erhöhen, wurden die Holzfurniere solcher einfachen Tischlerplatten bereits durch Spanschichten ersetzt (Spantischlerplatte) und mit Hilfe von Klebern oder Leim mit bekannten Schichtstoffplatten aus Melamin-Phenolpapieren in einer Stärke von mehr als 0,4 mm beschichtet. Solche Schichtkörper wie sie z.B. unter der Bezeichnung Resopal auf dem Markt sind werden beispielsweise auf die Weise hergestellt, daß man bereits ausgehärtete Kombinationen von Melamin-Phenolpapieren, sogenannte Schichtstoffplatten mit Leim oder Klebern auf die Spantischlerplatte durch Rollen, Kalt- oder Heißpressen aufbringt. Solche Schichtkörper sind durch ihre notwendigerweise 3-stufige Herstellung verhältnismäßig aufwendig.made of spruce wood coated on both sides with wood veneer are, Above all, they are better than the chipboard, which is also known Flexural strength and superior screw retention to their possible uses To increase, the wood veneers of such simple blockboard were already through Chip layers replaced (chipboard) and with the help of glue or glue with known laminate panels made of melamine-phenolic papers in a thickness of more coated as 0.4 mm. Such laminates as they are, for example, under the name Formica are on the market, for example, are manufactured in such a way that one already cured combinations of melamine-phenolic papers, so-called laminated panels with glue or glue on the chipboard by rolling, cold or hot pressing brings up. Due to their necessarily 3-stage production, such laminates are essential relatively expensive.

Es sind gleichfalls Spanplatten bekannt, die zur Verbesserung ihrer Eigenschaften ein- oder beidseitig mit Kunstharz beschichtet sind. Bei der Herstellung solcher beschichteter Spanplatten wird im allgemeinen so vorgegangen, daß man die unbeschichtete Spanplatte beidseitig mit Kunstharz-getränkten Papieren belegt und unter Anwendung 2 von Drücken zwischen 25 und 35 kg/cm und Temperaturen am und Papier von etwa 135 - 160 C verpresst. Zum Fließen und vollständigen Aushärten des Kunstharzfilmes ist eine Mindestpresszeit von etwa 35 bis 40 Sekunden erforderlich. Die solchermaßen beschichteten Spanplatten sind zwar kratzfest, weisen Jedoch gegenüber den oben beschriebenen Tischlerplatten eine geringere Biegefestigkeit und ein geringeres Schraubenhaltevermögen auf.There are also chipboard known to improve their Properties are coated on one or both sides with synthetic resin. In the preparation of such coated chipboard is generally proceeded in such a way that the uncoated chipboard covered on both sides with synthetic resin-impregnated paper and using 2 pressures between 25 and 35 kg / cm and temperatures on and paper pressed from about 135 - 160 C. To flow and complete Harden of the synthetic resin film, a minimum pressing time of about 35 to 40 seconds is required. The chipboard coated in this way is scratch-resistant, but has an opposite side the blockboards described above have a lower flexural strength and a lower Screw retention.

Es bestand deshalb seit langem ein Bedürfnis nach Holzwerkstoff-SchichtkOrpern, die nicht nur eine gute Biegefestigkeit und ein gutes Schraubenhaltevermögen sowie gleichzeitig die mechanischen und ästhetischen Eigenschaften der Kunstharz-beschichteten Spanplatten aufweisen, sondern auch leichter herzustellen sind, als die oben beschriebenen, mit Schichtstoffplatten belegten Tischlerplatten, Aufgabe der Erfindung ist es deshalb, Holzwerkstoff-Schichtkörper zur Verfügung zu stellen, die neben einer guten Biegefestigkeit und gutem Schraubenhaltevermögen eine bessere Wasserabweisung, Kratzfestigkeit, sowie ein- oder mehrfarbige Muster aufweisen.For a long time there has therefore been a need for laminated wood-based bodies, which not only have good flexural strength and good screw holding power as well at the same time the mechanical and aesthetic properties of the synthetic resin-coated Have chipboard, but are also easier to manufacture than those described above, Blockboards covered with laminate panels, the object of the invention is therefore to To provide wood-based laminates available, in addition to good flexural strength and good screw retention, better water repellency, scratch resistance, as well as single or multi-colored patterns.

Es wurde überraschend gefunden, daß diese Aufgabe dadurch gelöst werden kann, daß man eine Tischlerplatte, bestehend aus einer Stab- oder Stäbcheninnenlage, beispielsweise aus Fichtenholz, zuerst mit zwei Spandeckschichten symmetrisch beschichtet und anschließend kurzzeitig, d.h. maximal bis zu 90 Sekunden, vorzugsweise bis zu 60 Sekunden, bei 135 - 1600C Presstemperatur am Papier einem Press-2 druck von etwa 20 - 30 kg/cm aussetzt. Es hat sich hierbei überraschend gezeigt, daß durch die kurze Presszeit die bei Tischlerplatten sonst bei Drücken über 15 kg/cm2 auftretende Welligkeit nicht auftritt und die Stärke dieser Platte nicht verändert wird. Dies war deshalb überraschend, weil bei der Herstellung der Grundplatte der Pressdruck 2 nicht über 12 kg/cm gesteigert werden kann, ohne daß die Platte in ihrer Stärke stark abnimmt und einen hohen Welligkeitsgrad bekommt.It has surprisingly been found that this object is achieved it can be that a blockboard, consisting of a rod or rod inner layer, for example made of spruce wood, initially with two symmetrical layers of chipboard coated and then briefly, i.e. a maximum of 90 seconds, preferably up to 60 seconds, at 135 - 1600C press temperature on the paper a press pressure of approx Exposes 20-30 kg / cm. It has surprisingly been found that by the short pressing time that otherwise occurs with blockboard at pressures above 15 kg / cm2 Waviness does not occur and the thickness of this plate is not changed. this was surprising because of the pressing pressure in the manufacture of the base plate 2 cannot be increased above 12 kg / cm without reducing the thickness of the plate decreases sharply and has a high degree of waviness.

Nachfolgend wird die Erfindung anhand eines Beispiels näher erläutert.The invention is explained in more detail below using an example.

Beispiel Eine übliche Tischlerplatte (1,6 x 205 x 520 cm3) bestehend aus einer Fichtenholz-Stabinnenlage wurde zuerst beidseitig mit einer Jeweils 4 mm starken Spanschicht beschichtet und anschließend in einer Kurztakt-Vertikalanlage der Fa. Becker 2 & van Hüllen, Krefeld bei etwa 1500C und 30 kg/cm Druck in 40 Sekunden verpresst. Zur Beschichtung wurde ein Papier verwendet, das mit 110 g/m2 Melaminharz getränkt war. Nach dem Entgraten und Abkühlen wurden Platten erhalten, die in der Oberfläche gleich den beschichteten Spanplatten waren, in ihren mechanischen Eigenschaften Jedoch diesen Spanplatten vor allem hinsichtlich der Biegefestigkeit und ihres Schraubenhaltevermögens deutlich überlegen waren. Example Consisting of a standard blockboard (1.6 x 205 x 520 cm3) a spruce bar inner layer was first turned into a 4 on both sides mm thick chip layer coated and then in a short-cycle vertical system from Becker 2 & van Hüllen, Krefeld at about 1500C and 30 kg / cm pressure in Pressed for 40 seconds. A paper was used for the coating that was rated at 110 g / m2 melamine resin was soaked. To deburring and cooling Panels were obtained that had the same surface as the coated chipboard, In terms of their mechanical properties, however, these chipboards are primarily concerned with the flexural strength and their screw holding capacity were clearly superior.

- Patentansprüche -- patent claims -

Claims (3)

Patentansprüche: 1) Holzwerkstoff-Schichtkörper aus einer Stab- oder Stäbcheninnenlage und beidseitig aufgebrachten Spanschichten, dadurch gekennzeichnet, daß zusätzlich auf den Spanschichten eine ausgehärtete Kunstharzschicht aufgepresst ist. Claims: 1) Laminated wood material from a rod or Inner stick layer and chip layers applied on both sides, characterized in that that a hardened synthetic resin layer is additionally pressed onto the chip layers is. 2. Verfahren zur Herstellung eines Holzwerkstoffschichtkörpers nach Anspruch 1, bei dem man eine Stab- oder Stäbcheninnenlage aus Holz beidseitig mit einer Spanschicht beschichtet, dadurch gekennzeichnet, daß man die Spantischlerplatte mit Kunstharz-getrankten Papieren belegt und bei Temperaturen 0 2.2. Process for the production of a wood-based composite body according to Claim 1, in which one has a rod or rod inner layer made of wood on both sides with coated with a chip layer, characterized in that the chipboard covered with synthetic resin-soaked papers and at temperatures 0 2. oberhalb etwa 135 C und Drücken von mehr als 20 kg/cm2 während eines Zeitraums von nicht mehr als 90 Sekunden verpresst. above about 135 C and pressures of more than 20 kg / cm2 during a Pressed for a period of no more than 90 seconds. 3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß man die Spantischlerplatte mit Melaminharz-getränkten Papieren belegt und während eines Zeitraums von nicht mehr als 60 Sekunden verpresst.3. The method according to claim 2, characterized in that the Spant blockboard covered with melamine resin-impregnated papers and during one Pressed for a period of not more than 60 seconds.
DE19752524097 1975-05-30 1975-05-30 Wood laminate with core of rods, and outer layers of woodchips - which are additionally laminated with a hardened plastics layer Pending DE2524097A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19752524097 DE2524097A1 (en) 1975-05-30 1975-05-30 Wood laminate with core of rods, and outer layers of woodchips - which are additionally laminated with a hardened plastics layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752524097 DE2524097A1 (en) 1975-05-30 1975-05-30 Wood laminate with core of rods, and outer layers of woodchips - which are additionally laminated with a hardened plastics layer

Publications (1)

Publication Number Publication Date
DE2524097A1 true DE2524097A1 (en) 1976-12-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2030747A1 (en) * 2007-08-26 2009-03-04 Moralt Tischlerplatten GmbH & Co. KG Lightweight building slab and manufacturing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2030747A1 (en) * 2007-08-26 2009-03-04 Moralt Tischlerplatten GmbH & Co. KG Lightweight building slab and manufacturing method

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