DE903030C - Process for the production of veneered wooden frame doors - Google Patents
Process for the production of veneered wooden frame doorsInfo
- Publication number
- DE903030C DE903030C DEM7325A DEM0007325A DE903030C DE 903030 C DE903030 C DE 903030C DE M7325 A DEM7325 A DE M7325A DE M0007325 A DEM0007325 A DE M0007325A DE 903030 C DE903030 C DE 903030C
- Authority
- DE
- Germany
- Prior art keywords
- wooden frame
- production
- pressing
- frame doors
- veneered
- 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.)
- Expired
Links
Classifications
-
- 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
- B27D1/06—Manufacture of central layers; Form of central layers
-
- 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
- E04C2/12—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 solid wood
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Architecture (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Forests & Forestry (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Securing Of Glass Panes Or The Like (AREA)
Description
In dem Patent 842 255 ist ein Verfahren zum Herstellen von furnierten Holzrahmentüren vorgeschlagen worden, nach dem der Holzrahmen mit einer oder mehreren Dämmplatten mit einer der Holzrahmenstärke gleichen Gesamtstärke, beliebigen Aufbaues und geringstmöglichem Gewicht ausgefüllt, beiderseitig mittels Kunstharzfilmen mit einer oder mehreren Lagen Furniere überleimt und das so hergestellte Türblatt zwecks vollendeter Leimung unter Druck von 4 Ibis 8 kg/cm2 bei einer Temperatur von über ioo° C gepreßt wird. Es hat sich nun gezeigt, daß bei einer nach diesem Verfahren hergestellten Tür gelegentlich Ablösungen der Furniere auftreten können. Eingehende Untersuchungen haben ergeben, daß !dies darauf zurückzuführen ist, d:aß bei der Erwärmung der Platten, die eine gewisse Feuchtigkeit enthaltenden Dämmplatten Dampf entwickeln, der zur Ablösung der Furnierlagen führt. Um nun diesen Nachteil zu vermeiden, wird gemäß der Erfindung vorgeschlagen, den Holzrahmen vor dem Verpressen an einer oder mehreren Stellen, vorzugsweise an der oberen und unteren Kante, mit Austrittsöffnungen für den sich beim Pressen bildenden Wasserdampf zu versehen. Durch dieses einfache Mittel wird erreicht, daß der sich bildende Dampf während des Herstellungsverfahrens entweichen kann, so daß eine nachträgliche Ablösung der Furniere durch den Wasserdampf nicht mehr möglich ist.In the patent 842 255 a method for the production of veneered wooden frame doors has been proposed, according to which the wooden frame is filled with one or more insulation boards with a total thickness equal to the wooden frame thickness, any structure and the lowest possible weight, glued over both sides by means of synthetic resin films with one or more layers of veneer and the door leaf produced in this way is pressed under pressure of 4 ibis 8 kg / cm2 at a temperature of over 100 ° C. for the purpose of completed gluing. It has now been shown that peeling of the veneers can occasionally occur in a door produced by this process. In-depth investigations have shown that this is due to the fact that when the panels are heated, the insulating panels, which contain a certain amount of moisture, develop steam, which leads to the peeling of the veneer layers. In order to avoid this disadvantage, it is proposed according to the invention to provide the wooden frame with outlet openings for the water vapor that forms during pressing at one or more points, preferably at the upper and lower edge, before pressing. This simple means ensures that the steam that forms can escape during the manufacturing process, so that subsequent detachment of the veneers by the steam is no longer possible.
Um zu vermeiden, daß die Dämmplatten nach dem Anbringen der Tür Feuchtigkeit aufnehmen können, werden die Öffnungen oder -Bohrungen des Holzrahmens nach dem Pressen durch Dübel od. dgl. wieder verschlossen.In order to avoid that the insulation boards moisture after attaching the door can accommodate the openings or holes in the wooden frame after Pressing with dowels or the like closed again.
In der Zeichnung ist -schematisch ein Ausführungsbeispiel einer Tür nach der Erfindung im Schnitt dargestellt.The drawing shows an exemplary embodiment of a door schematically shown in section according to the invention.
Wie bei dem Patent 842 255 besitzt die Tür in üblicher Weise einen ringsum laufenden Holzrahmen i, der eine Innenlage aus einer Dämmplatte 2 erhält. Diese Platte ist aus geschliffenem oder gemahlenem Holz od. dgl. -im Naßverfahren hergestellt und hat ein sehr geringes Gewicht. Um den Holzrahmen mit einer oder mehreren Absperrfurnierpiatten zu versehen, wird ein wasserfreier härtbarer Kuns.tharzfilm 3 aufgelegt und hierauf eine Furnierplatte 4. Es kann kirr weiterer Leimfilm 5 und eine weitere Deckfurnierplatte 6 gleichzeitig aufgelegt werden. Die Furnierungen werden selbstverständlich auf beiden Seiten der Tür angebracht.As with the 842,255 patent, the door has a conventional one All around running wooden frame i, which receives an inner layer of an insulation board 2. This plate is made of sanded or ground wood or the like - in the wet process manufactured and is very light in weight. To the wooden frame with an or Providing several barrier veneer panels is a water-free, hardenable synthetic resin film 3 is placed on top and a veneer panel 4. It can be further glue film 5 and another face veneer panel 6 can be placed at the same time. The veneers are of course placed on both sides of the door.
Damit nun bei dem anschließenden. Preßvorgang, der bei einer Temperatur von über ioo,° C erfolgt, der sich innerhalb des Holzrahmens bildende Wasserdampf entweichen kann, wird gemäß der Erfindung der Holzrahmen an einer oder mehreren Stellen mit Austrittsöffnungen 7 versehen. Diese Öffnungen können in Form von Bohrungen angebracht sein, es könnten aber auch Nuten in der Oberfläche des Holzrahmens angebracht werden, die durch die Furnierplatte abgedeckt sind.So now with the subsequent. Pressing process that takes place at a temperature of over 100 ° C takes place, the water vapor forming inside the wooden frame can escape, is according to the invention of the wooden frame on one or more Provide places with outlet openings 7. These openings can be in the form of bores be appropriate, but it could also be made grooves in the surface of the wooden frame covered by the veneer panel.
Diese Austrittsöffnungen für den sich beim Pressen bildenden Wasserdampf werden vorzugsweise an der oberen und unteren Kante der Tür angebracht, so daß sie nach dem Einbau der Tür nicht mehr zu erkennen sind.These outlet openings for the water vapor that forms during pressing are preferably attached to the top and bottom edges of the door so that they can no longer be seen after the door has been installed.
Damit die feuchtigkeitsempfindliche Einlage (Dämmplatte 2) späterhin von außen kein Wasser aufnehmen kann, werden diese Öffnungen oder Bohrungen (7) nach dem Pressen der Platte durch Dübel od.. dgl. wieder verschlossen.So that the moisture-sensitive insert (insulation board 2) later cannot absorb water from the outside, these openings or bores (7) after pressing the plate with dowels or the like closed again.
Wenn sehr große Türen auf diese Weise hergestellt werden, bei denen der Holzrahmen durch Zwischenholme unterteilt ist, so wird man diese Austrittsöffnungen so anbringen"daß jede einzelne Dämmplatte mit d ier Außenluft während des Preßv organges in Verbindung steht.When very large doors are made this way, those The wooden frame is divided by intermediate spars, so one becomes these outlet openings Attach in such a way that each individual insulation board is exposed to the outside air during the press organges.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM7325A DE903030C (en) | 1950-10-26 | 1950-10-26 | Process for the production of veneered wooden frame doors |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM7325A DE903030C (en) | 1950-10-26 | 1950-10-26 | Process for the production of veneered wooden frame doors |
Publications (1)
Publication Number | Publication Date |
---|---|
DE903030C true DE903030C (en) | 1954-02-01 |
Family
ID=7293683
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM7325A Expired DE903030C (en) | 1950-10-26 | 1950-10-26 | Process for the production of veneered wooden frame doors |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE903030C (en) |
-
1950
- 1950-10-26 DE DEM7325A patent/DE903030C/en not_active Expired
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