DE477424C - Method of manufacturing plywood panels - Google Patents

Method of manufacturing plywood panels

Info

Publication number
DE477424C
DE477424C DET30614D DET0030614D DE477424C DE 477424 C DE477424 C DE 477424C DE T30614 D DET30614 D DE T30614D DE T0030614 D DET0030614 D DE T0030614D DE 477424 C DE477424 C DE 477424C
Authority
DE
Germany
Prior art keywords
boards
plywood panels
cut
weather
manufacturing 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.)
Expired
Application number
DET30614D
Other languages
German (de)
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.)
Sperrholzwerke Tiedemann A G
Original Assignee
Sperrholzwerke Tiedemann A G
Publication date
Priority to DET30614D priority Critical patent/DE477424C/en
Application granted granted Critical
Publication of DE477424C publication Critical patent/DE477424C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27DWORKING VENEER OR PLYWOOD
    • B27D1/00Joining wood veneer with any material; Forming articles thereby; Preparatory processing of surfaces to be joined, e.g. scoring
    • B27D1/04Joining 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
    • B27D1/06Manufacture of central layers; Form of central layers

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)

Description

Verfahren zur Herstellung von Sperrholzplatten Es ist bekannt, Stämme vom Kernschnitt aus in zu diesem parallele Bretter zu zerlegen, die paarweise eine abnehmende Dicke aufweisen. Ferner wurden bereits Sperrplatten unter Verwendung von Holzstreifen hergestellt, die dadurch erhalten werden, daß man die Kernstücke von Brettern ausschneidet und die beiden übrigbleibenden Bretteile so aneinanderfügt, daß stets Nordseite an Nordseite und Südseite an Südseite stößt. Schließlich hat man finit Einschnitten versehene Bretter als Zwischenlage benutzt, deren Einschnitte nachträglich durch Kitt ausgefüllt wurden.Method of making plywood panels It is known to use logs to dismantle from the core cut into boards parallel to this, the one in pairs have decreasing thickness. Furthermore, locking plates have already been used made of strips of wood obtained by cutting the core pieces cuts out of boards and joins the two remaining board parts so that that the north side always meets the north side and the south side meets the south side. Finally has boards with finite incisions are used as an intermediate layer, the incisions were subsequently filled in with putty.

Die gleichzeitige Verwendung der ganzen oder der vom Kernstück befreiten Bretter für die Herstellung der Holzstreifen für die Mittelplatte hat sich als unzweckmäßig erwiesen, weil der Baumstamm an den Nord-und Ostseiten, den Wetterseiten, ganz andere Eigenschaften als an den Süd- und Westseiten, den Sonnenseiten, aufweist. Das Holz, der Wetterseiten ist hart, das der Sonnenseiten dagegen weich und biegsam. Diese verschiedene Beschaffenheit bedingt Spannungsunterschiede der Mittelplatte, die sich in der Sperrplatte durch eine ungleichmäßige, abwechselnd Berg und Tal bildende Oberfläche auswirkt.The simultaneous use of the whole or the exempted from the core Boards for the production of the wooden strips for the middle plate has proven to be inexpedient proved because the tree trunk on the north and east sides, the weather sides, completely different Properties than on the south and west sides, the sunny sides. The wood, the weather side is hard, while that of the sunny side is soft and pliable. These different texture causes tension differences of the middle plate, which in the locking plate through an uneven, alternating mountain and valley Surface affects.

Wie nun gefunden wurde, lassen sich diese .Nachteile dadurch vermeiden, daß die Latten für die Mittellage aus Brettern geschnitten werden, die man in abnehmender Dicke aus (!.ein Baumstamme vom Kernschnitt aus paarweise in gleichem Abstande schneidet und alsdann in Wetter- und Sonnenseitenhälften zerlegt, von denen jede für sich gesondert weiterverarbeitet wird.As has now been found, these disadvantages can be avoided by that the battens for the middle layer are cut from boards, which one in decreasing Thickness from (!. A tree trunk cuts from the core cut in pairs at the same distance and then divided into halves of the weather and the sun, each of them for itself is further processed separately.

Durch eine solche planmäßige Zerlegung des Stammes und Zusammensetzung der einzelnen Latten wird stets das gleiche Erzeugnis mit denselben Eigenschaften und Festigkeitszahlen erhalten. Verwendet man nur Latten einer Seite, z. B. der Wetterseite, so wird hierdurch das Welligwerden der Mittelplatte vermied-en, welches sich bei Zusammensetzung derselben aus Latten verschiedener Seiten infolge des ungleichmäßigen Zusaminentrocknens nicht vermeiden läßt; insbesondere tritt eine Verstärkung der Krümmungsneigung, - die bei Zusammensetzung der Mittellage aus Latten einer Seite eintreten könnte, bei schnell und .gut austrocknenden Latten nicht ein.By such a systematic dismantling of the trunk and assembly of the individual slats is always the same product with the same properties and strength numbers obtained. If you only use slats on one side, e.g. B. the Weather side, this prevents the middle plate from becoming wavy, which when they are composed of slats on different sides due to the uneven shape Cannot be prevented from drying together; in particular, there is a strengthening of the Curvature tendency - the one when the middle layer is composed of battens on one side Could not occur in the case of slats that dry out quickly and well.

Die Erfindung ist in der Zeichnung in einer Ausführungsform dargestellt. Abb. r zeigt einen Ouerschnitt des Baumstammes, Abb. z einen Schnitt durch die Sperrplatte.The invention is shown in the drawing in one embodiment. Fig. R shows a cross-section of the tree trunk, Fig. Z shows a section through the locking plate.

Der Baumstamm a ist von seinem Herzen aus in gleichere Abständen in die paarweise jeweils gleich starken Bretter in abnehmender Dicke b1, b2, cl, c2, dl, d2, e1, e2, f1, f 2 usw. zerlegt, die durch den Schnitt nach der Linie g in West- und Ostbretterhälften geteilt sind. Bei der Herstellung der Sperrplatte, die aus der Mittelplatte h und den Furnieren i, k besteht, verwendet man stets Latten, die entweder nur aus Wetterseiten-oder Sonnenseitenhälften der Bretter herrühren. Infolgedessen verlaufen die Jahresringe der ganzen Einlage stets nach der gleichen Richtung.The tree trunk a is divided from its heart at equal intervals into the pairs of equally thick boards with decreasing thicknesses b1, b2, cl, c2, dl, d2, e1, e2, f1, f 2 etc. the line g are divided into west and east board halves. In the manufacture of the blocking plate, which consists of the middle plate h and the veneers i, k, slats are always used which either come only from the weather side or sun side halves of the boards. As a result, the annual rings of the entire deposit always run in the same direction.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von Sperrholzplatten mit aus Holzstreifen zusammengesetzter Mittelplatte, dadurch gekennzeichnet, daß die Latten für die Mittellage aus Brettern geschnitten werden, die in abnehmender Dicke aus dem Baumstamme vom Kernschnitt aus paarweise in gleichem Abstande geschnitten und alsdann in Wetter- und Sonnenseitenhälften zerlegt sind, von denen jede für sich gesondert weiterverarbeitet wird.PATENT CLAIM: Process for the production of plywood panels with Middle plate composed of strips of wood, characterized in that the Laths for the middle layer are cut from boards in decreasing thickness cut from the tree trunk from the core cut in pairs at the same distance and then divided into halves of the weather and the sun, each of which is for is further processed separately.
DET30614D Method of manufacturing plywood panels Expired DE477424C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET30614D DE477424C (en) Method of manufacturing plywood panels

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET30614D DE477424C (en) Method of manufacturing plywood panels

Publications (1)

Publication Number Publication Date
DE477424C true DE477424C (en) 1929-06-06

Family

ID=7555711

Family Applications (1)

Application Number Title Priority Date Filing Date
DET30614D Expired DE477424C (en) Method of manufacturing plywood panels

Country Status (1)

Country Link
DE (1) DE477424C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742282C (en) * 1938-01-22 1943-12-13 Franz Hellstern Plywood board
DE4026348A1 (en) * 1990-03-17 1991-09-19 Linck Masch Gatterlinck METHOD FOR PRODUCING MULTI-LAYER LAMINATE PRODUCTS FROM WOOD AND SYSTEM FOR IMPLEMENTING THE METHOD
DE4122365A1 (en) * 1991-07-05 1993-01-07 Linck Masch Gatterlinck METHOD FOR PRODUCING SOLID WOOD COMPOSITE PANELS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE742282C (en) * 1938-01-22 1943-12-13 Franz Hellstern Plywood board
DE4026348A1 (en) * 1990-03-17 1991-09-19 Linck Masch Gatterlinck METHOD FOR PRODUCING MULTI-LAYER LAMINATE PRODUCTS FROM WOOD AND SYSTEM FOR IMPLEMENTING THE METHOD
DE4122365A1 (en) * 1991-07-05 1993-01-07 Linck Masch Gatterlinck METHOD FOR PRODUCING SOLID WOOD COMPOSITE PANELS

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