DE561118C - Plywood board - Google Patents

Plywood board

Info

Publication number
DE561118C
DE561118C DET40049D DET0040049D DE561118C DE 561118 C DE561118 C DE 561118C DE T40049 D DET40049 D DE T40049D DE T0040049 D DET0040049 D DE T0040049D DE 561118 C DE561118 C DE 561118C
Authority
DE
Germany
Prior art keywords
veneer layers
plywood
plywood board
layers
veneer
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
DET40049D
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.)
KARL THOMSON
Original Assignee
KARL THOMSON
Publication date
Priority to DET40049D priority Critical patent/DE561118C/en
Application granted granted Critical
Publication of DE561118C publication Critical patent/DE561118C/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

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

Sperrholzplatte Es besteht der bekannte Mißstand, daß volle Sperrholzplatten infolge der_ verscbiedenen Spannungsverhältnisse in den Furnierauflagen sich immer noch verziehen und windschief werden. @ .Plywood sheet There is a well-known drawback that solid plywood sheets due to the different tension conditions in the veneer layers still warped and crooked. @.

Die Beseitigung dieses Mangels ist der Zweck vorliegender Erfindung.The purpose of the present invention is to remedy this deficiency.

Auf der Zeichnung ist der Erfindungsgegenstand näher erläutert: Fig. z ist ein Längsschnitt, Fig. 2 ein Querschnitt durch die neue Sperrholzplatte, während Fig. 3 einen in Sperrfurniere geschnittenen Baumstamm darstellt.The subject of the invention is explained in more detail in the drawing: z is a longitudinal section, Fig. 2 is a cross section through the new sheet of plywood, while Fig. 3 shows a tree trunk cut into barrier veneers.

Die Sperrholzplatte besteht aus der bekannten THittellage A, welche aus fest nebeneinanderliegenden, aber unverleimten Leisten zusammengesetzt ist, deren Jahresringe möglichst aufrecht zur Plattenebene verlaufen, und aus der aufgeleimten oberen und unteren Furnierlage a, b bz-,v. c, d. The plywood sheet consists of the well-known middle layer A, which is composed of strips that are firmly adjacent but unglued, the annual rings of which run as upright as possible to the plane of the board, and of the glued-on upper and lower veneer layers a, b bz-, v. c, d.

Erreicht wird der angestrebte Erfolg dadurch, daß obere und untere Furnierlage aus zwei im Stamm aufeinanderfolgenden Furnierlagen a; b bzw. c, d verwandt werden. Die gewählten Furnierlagen müssen vor dem Verleimen genau gleich zugeschnitten sein, und zwar so, daß die Jahresringe wie im Wuchs übereinstimmend verlaufen.The desired success is achieved in that the upper and lower veneer layers consist of two veneer layers a; b or c, d can be used. The chosen veneer layers must be cut exactly the same before gluing, in such a way that the annual rings run in the same direction as in the growth.

Wenn die Breite der Furnierlagen a und b "im einzelnen Falle nicht ausreicht, werden die Furnierlagen c und d anschließend verwandt. Es ist jedoch genau darauf zu achten, daß die besäumten Kanten der Furnierlagen ober- und unterhalb der Mittellage A jeweils genau übereinanderliegen, dann liegen auch die zusammengehörigen Jahresringe der Furnierlagen wie im Wuchs genau übereinander, nur daß sie durch die Mittellage A voneinander getrennt sind (Fig. 2).If the width of the veneer layers a and b ″ is not sufficient in the individual case, the veneer layers c and d are then used the associated annual rings of the veneer layers lie exactly on top of each other as in the growth, only that they are separated from each other by the middle layer A (Fig. 2).

Die Ursache, daß Sperrholzplatten windschief werden, bestand darin, daß man nicht im Stamm aufeinanderfolgende und nicht nach den Jahresringen genau übereinanderliegende Furnierlagen verwandte.The cause of plywood sheets becoming crooked was because that one does not follow one another in the trunk and not exactly according to the annual rings related layers of veneer lying on top of each other.

Da die Furnierlagen der neuen Sperrholzplatte nahezu ganz gleiche Spannkräfte bergen, wird ein Nichtwindschiefwerden der Sperrholzplatten gewährleistet.Because the veneer layers of the new plywood panel are almost exactly the same Hold tension forces, a non-skewing of the plywood is guaranteed.

Claims (1)

PATENTANSPRUCFA: Sperrholzplatte, dadurch gekennzeichnet, daß für die die bekannte Leisteneinlage (Mittellage A) oben und unten bedeckenden, an sich gebräuchlichen Furnierlagen im Stamm aufeinanderfolgende Furnierlagen (a, b bzw. c, d) wie im Wuchs verwandt werden. PATENT CLAIM: Plywood panel, characterized in that successive veneer layers (a, b or c, d) as in the growth are used for the usual veneer layers in the trunk which cover the known strip insert (middle layer A) above and below.
DET40049D Plywood board Expired DE561118C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DET40049D DE561118C (en) Plywood board

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET40049D DE561118C (en) Plywood board

Publications (1)

Publication Number Publication Date
DE561118C true DE561118C (en) 1932-10-10

Family

ID=7560653

Family Applications (1)

Application Number Title Priority Date Filing Date
DET40049D Expired DE561118C (en) Plywood board

Country Status (1)

Country Link
DE (1) DE561118C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378097A2 (en) * 1989-01-13 1990-07-18 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood
EP2078597A3 (en) * 2008-01-09 2013-03-27 Scheucher Holzindustrie GmbH Method for producing a wooden board with a structured surface

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0378097A2 (en) * 1989-01-13 1990-07-18 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood
EP0378097A3 (en) * 1989-01-13 1991-08-28 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood
US5255726A (en) * 1989-01-13 1993-10-26 Meinan Machinery Works, Inc. Substantially uncurved and unwaved plywood produced by using veneers with unstraight fibers and method for producing such a plywood
EP2078597A3 (en) * 2008-01-09 2013-03-27 Scheucher Holzindustrie GmbH Method for producing a wooden board with a structured surface

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