DE2709596A1 - Cladding of chipboards with impregnated veneers - giving same characteristics as glass fibre coatings more cheaply - Google Patents

Cladding of chipboards with impregnated veneers - giving same characteristics as glass fibre coatings more cheaply

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Publication number
DE2709596A1
DE2709596A1 DE19772709596 DE2709596A DE2709596A1 DE 2709596 A1 DE2709596 A1 DE 2709596A1 DE 19772709596 DE19772709596 DE 19772709596 DE 2709596 A DE2709596 A DE 2709596A DE 2709596 A1 DE2709596 A1 DE 2709596A1
Authority
DE
Germany
Prior art keywords
veneers
coated
glass fibre
synthetic resin
plywood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19772709596
Other languages
German (de)
Inventor
Willy Muehlau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19772709596 priority Critical patent/DE2709596A1/en
Publication of DE2709596A1 publication Critical patent/DE2709596A1/en
Withdrawn legal-status Critical Current

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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
    • B32B21/00—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board
    • B32B21/14—Layered products comprising a layer of wood, e.g. wood board, veneer, wood particle board comprising wood board or veneer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27D—WORKING VENEER OR PLYWOOD
    • B27D1/00—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04—Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring to produce plywood or articles made therefrom; Plywood sheets
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/026—Wood layer
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/558—Impact strength, toughness
    • 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
    • B32B2605/00—Vehicles
    • B32B2605/08—Cars

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Forests & Forestry (AREA)
  • Laminated Bodies (AREA)

Abstract

In contrast to conventional procedures, chipboards are not coated with glass fibres impregnated with synthetic resin, but instead, (1) the glass fibre fleeces are replaced by wood veneers saturated with synthetic resin, (2) one veneer is applied to each surface of the chip board, (3) on each surface of the chip board an equal number of veneers is applied, (4) a different number of veneers is applied to one side as compared with the other, (5) the same number of veneers is applied to each surface with their grains running indifferent directions, (6) only one side of the board is coated with one or a number of veneers. Boards of 2.5 x 12 m are produced for container and vehicle bodies, and to give the required strength, >=450 g of glass fibre fleece plus 1,000 g of synthetic resin per m2 necessary. The price of veneers is 60% below that of glass fibre fleeces, whilst 50 to 70% less resin is required to impregnated the veneers. The saving in weight is 30%.

Description

Anlage 1 - zur Patentanmeldung von:Appendix 1 - for the patent application of:

Willy Miiblau, Bayernallee 44, 1003 Berlin 19 Postanschrift: Bayernallee 44, 1000 Berlin 19 B e 5 c h r e i b ung der "Beschichtung von Sperrholzplatten mit Kunstharz getränkten Furnieren" mit 6 Patentansprüchen.Willy Miiblau, Bayernallee 44, 1003 Berlin 19 Postal address: Bayernallee 44, 1000 Berlin 19 B e 5 c h r e i b ung the "coating of plywood panels veneers impregnated with synthetic resin "with 6 claims.

Zweck der Erfindlrlg ist es, großformatige Platten mit hohen mechanischen Festigkeiten kostengünstiger herzustellen.The purpose of the invention is to produce large-format panels with high mechanical To produce strengths more cost-effectively.

Nach dem heutigen Stand der Technik werden solche Platten bis zu Abmessungen von 2,5 x 12 m für den Container- und Fahrzeugbau sowie für Schalungszwecke auf zwei Arten hergestellt: 1. Die sogenannte Naßbeschichtung, wobei Glasfasermatten oder -gewebe mit Kunstharz wie z. B. ungesättigtes Polyesterharz beidseitig auf die Sperrholzplatten aufgebracht und unter geringem Druck (0, 5 - 2, 5 kp/cm2) bei Raumtemperatur bis ca. 800C ausgehärtet werden.According to the current state of the art, such plates are up to dimensions of 2.5 x 12 m for container and vehicle construction as well as for formwork purposes two types produced: 1. The so-called wet coating, whereby fiberglass mats or fabric with synthetic resin such. B. unsaturated polyester resin on both sides the plywood panels are applied and under low pressure (0.5 - 2.5 kp / cm2) Room temperature can be cured to approx. 800C.

Es ist auch möglich, das Kunstharz unter Vakuum nach dem sogenannten Vaku jm-lnjektionsverfahren einzu -bringen. It is also possible to apply the synthetic resin under vacuum after the so-called Introduce a vacuum in the injection process.

2. Das Heißpreßverfahren, bei welchem sogenannte Prepregs unter hohem Druck (10 - 30 kp/cm ) und hoher Temperatur (80 - 15O0C) beidseitig auf die Sperrholzplatten aufgepreßt werden.2. The hot pressing process, in which so-called prepregs under high Pressure (10 - 30 kp / cm) and high temperature (80 - 150 ° C) on both sides of the plywood panels be pressed on.

Der wirtschaftliche Nachteil der unter 1. und 2. genannten Beschichtungen liegt darin, daß, um die z. B. im Containerbau geforderten Festigkeiten zu erreichen, je Seite mindestens 450 Gramm Glasfasermatte plus ca. 1000 Gramm Kunstharz pro m2 erforderlich sind.The economic disadvantage of the coatings mentioned under 1. and 2. lies in the fact that, to the z. B. to achieve the strengths required in container construction, At least 450 grams of glass fiber mat per side plus approx. 1000 grams of synthetic resin per m2 required are.

Anlage 1 - zur Patentanrn&dung von: Willy Mïïhlau, Bayernallee 44, 1000 Berlin 19 Postanschrift: Bayernallee 44, 1000 Berlin 19 Hinzu kommt bei der unter 2. genannten Methode der hohe Energieverbra-lch sowie hohe Investitionen.Annex 1 - for patent application by: Willy Mïïhlau, Bayernallee 44, 1000 Berlin 19 Postal address: Bayernallee 44, 1000 Berlin 19 Added to this is the method mentioned under 2. high energy consumption and high investments.

Bei vorgenanater Erfindung wird die Glasfaser durch Holzfurniere ersetzt. Die Erfindung wird dadurch gekennzeichnet, daß Holzfurniere in den Stärken von 0, 5 bis 3,0 mm in einem Vakuumbehälter für 3 - 10 Mi z lten evakuiert werden. Hierbei öffnen sich die Kapillaren des Holzes, und die im Holz enthaltene Luft entweicht.In the above invention, the fiberglass is replaced by wood veneers. The invention is characterized in that wood veneers in the thicknesses of 0, 5 to 3.0 mm can be evacuated in a vacuum container for 3 - 10 mls. Here the capillaries of the wood open and the air contained in the wood escapes.

Danach wird bei konstantem Vakuum Kunstharz in den Behälter gesaugt. Wenn die Furniere völlig mit Kunstharz bedeckt sind, wird der Behälter belüftet. Die dadurch entstehende Druckdifferenz gegenüber dem Holzinneren bewirkt, daß das Kunstharz auch das Innere der Holzkapillaren füllt. Bei dickeren Furnieren ist es sinnvoll, den Behälter zusätzlich unter Druck zu setzen (2 - 6 kp/cm2).Then synthetic resin is sucked into the container at a constant vacuum. When the veneers are completely covered with synthetic resin, the container is ventilated. The resulting pressure difference compared to the inside of the wood causes the Resin also fills the inside of the wooden capillaries. With thicker veneers it is It makes sense to put the container under additional pressure (2 - 6 kp / cm2).

Nach einer Tränkzeit von 2 - 10 Minuten wird das Kunstharz in einen zweiten, bereits mit Furnier beschickten und evakuierten Behälter gesaugt.After a soaking time of 2 - 10 minutes, the synthetic resin is turned into a second, already filled with veneer and evacuated container vacuumed.

Die Furniere läßt man noch etwas abtropfen und preßt sie dann mit geringem Druck (0,5 - 2,5 kp/cm2) auf die Sperrholzplatten.The veneers are left to drip off a little and then pressed together low pressure (0.5 - 2.5 kp / cm2) on the plywood panels.

Die Aushärtung erfolgt bei 20 - 800C.The hardening takes place at 20 - 800C.

Die Tränkung dünner Furniere (0, 5 - 0, 8 mm) kaan auch ohne Vakuum erfolgen, jedoch sind dann nicht alle Hohlräume gefüllt, und die Endfestigkeit ist entsprechend geringer.The impregnation of thin veneers (0.5 - 0.8 mm) can also be done without a vacuum take place, but then not all cavities are filled, and the final strength is correspondingly lower.

Als Furniere können für die vorgenannte Erfindung alle langfaserigen Holzarten wie z. B. Birke, Pappel verwendet werden.All long-fiber veneers can be used as veneers for the aforementioned invention Types of wood such as B. birch, poplar can be used.

Der wirtschaftliche Vorteil vorgenannter Erfindung besteht darin, daß der Preis für Holzfurniere um ca. 60 % unter dem Preis für entsprechende Glasfasermatten liegt. Weiterhin wird für die Tränkung des Furnieres um 50 - 70 % (je nach Holzart) weniger Kunstharz benötigt als für die Glasfasermatte.The economic advantage of the aforementioned invention is that that the price for wood veneers is approx. 60% below the price for the corresponding glass fiber mats lies. Furthermore, for the impregnation of the veneer by 50 - 70% (depending on the type of wood) less synthetic resin is required than for the fiberglass mat.

Anlage 1 - zur Patentanmeldung von: Wllly Mühlau, Bayernallee 44, 1000 Berlin 1 9 Postanschrift: Bayernallee 44, 1000 Berlin 19 Die wirtschaftlichen und technischen Vorteile der Beschichtung nach vorgenannter Erfindung gegenüber der herkömmlicnen Beschichtung auf Basis glasfaserverstärkter Kunststoffe bei gleichen Festigkeitswerten ist darin zu sehen, daß a) die Beschichtung um ca. 50 % billiger ist b) eine Gewichtsersparnis um ca. 30 % erfolgt (Spez. Gew. ca. 1. 15 gegenüber ca. 1.45) c) die Festigkeit der Furniere in Faserrichtung wesentlich höher ist als quer zu Faserrichtung. Daher ist es möglich, dirch die sinnvolle Anordnung der Furniere in Längs- und/oder Querrichtung, Festigkeiten entsprechend den zu erwartenden Belastungen zu erreichen. Dies ist mit Glasfasermatten nicht möglich, da diese in allen Richtungen die gleiche Festigkeit haben.Annex 1 - to the patent application of: Wllly Mühlau, Bayernallee 44, 1000 Berlin 1 9 Postal address: Bayernallee 44, 1000 Berlin 19 The economic and technical advantages of the coating according to the aforementioned invention the conventional coating based on glass fiber reinforced plastics with the same Strength values can be seen in the fact that a) the coating is around 50% cheaper if b) there is a weight saving of approx. 30% (spec. weight approx. 1. 15 compared to approx. 1.45) c) the strength of the veneers in the direction of the fibers is much higher than across the grain. Therefore it is possible to dirch the sensible arrangement of the veneers in the longitudinal and / or transverse direction, strengths according to the expected loads to reach. This is not possible with fiberglass mats as they go in all directions have the same strength.

d) die kunstharzgetränkten Furniere mit einem synthetischen Faservlies oder Kunststoffolien auf der Oberfläche gegen Witterungseinflüsse geschützt werden, wobei der Oberflächenschutz durch das im Furnier befindliche Kunstharz verklebt wird, so daß kein zusätzlicher Arbeitsgang und auch kein Kleber erforderlich sind.d) the synthetic resin-soaked veneers with a synthetic fiber fleece or plastic films on the surface are protected against the effects of the weather, whereby the surface protection is glued by the synthetic resin in the veneer so that no additional operation and no glue are required.

Claims (1)

Anlage 2 - zur Patentanmeldung von: Willy Mahlau, Bayernallee 44, 1000 Berlin 19 Postanschrift: Bayernallee 44, 1000 Berlin 19 Sechs A n 5 p r ü c h e für "Beschichtung von Sperrholzplatten mit Kunstharz getränkten Furnieren" Gegenüber der herkommlichen Methode, Sperrholzplatten mit glasfaserverstärkten Kunstharzen zu beschichten, ist die vorbeschriebene Erfindung dadurch gekennzeichnet, daß 1, die Glasfasermatten durch Holzfurniere ersetzt werden.Annex 2 - to the patent application of: Willy Mahlau, Bayernallee 44, 1000 Berlin 19 Postal address: Bayernallee 44, 1000 Berlin 19 Sechs A n 5 p r ü c h e for "Coating of plywood panels with synthetic resin-soaked veneers" opposite the traditional method of plywood sheets with fiberglass-reinforced synthetic resins to coat, the above-described invention is characterized in that 1, the fiberglass mats are replaced by wood veneers. 2. die Sperrholzplatte auf jeder Seite mit je einem Holzfurnier beschichtet wird 3. die Sperrholzplatte auf jeder Seite mit menreren, aber der gleichen Anzahl Holzfurnieren beschichtet wird 4. die Sperrholcplatte je Seite mit einer unterschiedlichen Anzahl von Holzfurnieren beschichtet wird 5. die Sperrholzplatte auf jeder Seite mit der gleichen Anzahl, jedoch verschieden gerichteten (Faserrichtung) Furnieren beschichtet wird.2. The plywood sheet is coated with a wood veneer on each side 3. the plywood sheet on each side with several but the same number Wood veneer is coated 4. the plywood panel with a different one on each side Number of wood veneers is coated 5. the sheet of plywood on each side with the same number but differently oriented (grain direction) veneers is coated. 6. die Sperrholzplatte nur auf einer Seite mit einem oder mehreren Furnieren beschichtet wird.6. the plywood sheet only on one side with one or more Veneer is coated.
DE19772709596 1977-03-03 1977-03-03 Cladding of chipboards with impregnated veneers - giving same characteristics as glass fibre coatings more cheaply Withdrawn DE2709596A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19772709596 DE2709596A1 (en) 1977-03-03 1977-03-03 Cladding of chipboards with impregnated veneers - giving same characteristics as glass fibre coatings more cheaply

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772709596 DE2709596A1 (en) 1977-03-03 1977-03-03 Cladding of chipboards with impregnated veneers - giving same characteristics as glass fibre coatings more cheaply

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DE2709596A1 true DE2709596A1 (en) 1978-09-07

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585285A1 (en) * 1985-07-26 1987-01-30 Gazeau Bernard Method for obtaining wooden external covering panels, plates, slabs or tiles, and products resulting therefrom
DE9003971U1 (en) * 1990-04-05 1990-06-13 Pott, Richard, 32791 Lage Molded body with multi-layer structure
DE9200218U1 (en) 1992-01-10 1992-05-07 Kögl, Adolf, 8874 Leipheim Workbench top/worktop made of combination materials veneer/chipboard
DE29508924U1 (en) * 1995-06-07 1995-11-09 Funder Industrie Ges.M.B.H., St. Veit Resin molded wood body, especially furniture or furniture part

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2585285A1 (en) * 1985-07-26 1987-01-30 Gazeau Bernard Method for obtaining wooden external covering panels, plates, slabs or tiles, and products resulting therefrom
DE9003971U1 (en) * 1990-04-05 1990-06-13 Pott, Richard, 32791 Lage Molded body with multi-layer structure
DE9200218U1 (en) 1992-01-10 1992-05-07 Kögl, Adolf, 8874 Leipheim Workbench top/worktop made of combination materials veneer/chipboard
DE29508924U1 (en) * 1995-06-07 1995-11-09 Funder Industrie Ges.M.B.H., St. Veit Resin molded wood body, especially furniture or furniture part

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