DE478504C - Process to improve the drawability of wooden sheets - Google Patents

Process to improve the drawability of wooden sheets

Info

Publication number
DE478504C
DE478504C DEH112774D DEH0112774D DE478504C DE 478504 C DE478504 C DE 478504C DE H112774 D DEH112774 D DE H112774D DE H0112774 D DEH0112774 D DE H0112774D DE 478504 C DE478504 C DE 478504C
Authority
DE
Germany
Prior art keywords
wood
sheets
drawability
compressed
wooden
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
DEH112774D
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.)
BERNHARD HOITZ DIPL ING
Original Assignee
BERNHARD HOITZ DIPL ING
Publication date
Priority to DEH112774D priority Critical patent/DE478504C/en
Application granted granted Critical
Publication of DE478504C publication Critical patent/DE478504C/en
Expired legal-status Critical Current

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

Landscapes

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

Description

Verfahren zur Verbesserung der Ziehfähigkeit von Holzblechen Dem Ziehen von Hohlkörpern aus Holz waren bisher sehr enge Grenzen gesetzt, da die Formänderung im wesentlichen durch Zusammenstauchen des an einer Stelle durch Faltung überschüssigen Materials erfolgen mußte. Ein Recken des Materials führte fast stets zur Trennung des. Materialzusammenhanges.Process for improving the drawability of wooden sheets Drawing Hollow bodies made of wood used to have very narrow limits because of the change in shape essentially by compressing the excess in one place by folding Material had to be done. Stretching the material almost always resulted in separation des. material context.

Gemäß der Erfindung wird die Ziehfähigkeit von Holzblechen (dünnen Platten aus sperrholzartig verbundenen Holzschichten) dadurch verbessert, daß die zur Herstellung des Holzbleches verwendeten Einzelblätter aus gestauchtem Holz bestehen. Das aus gestauchten und dabei verdichteten Holzblättern gefertigte Holzblech läßt sich bis. nahezu auf die ursprünglichen Abmessungen wieder recken, ohne daß der Stoffzusammenhang verlorengeht.According to the invention, the drawability of wooden sheets (thin Panels made of plywood-like bonded wood layers) improved in that the Single sheets used to produce the sheet of wood are made of compressed wood. The sheet of wood made from compressed and thereby compressed sheets of wood can be up to. stretch almost to the original dimensions again without the The context of matter is lost.

Die Stauchung der Einzelblätter kann in verschiedener Weise erfolgen. So können z. B. die Einzelblätter aus einem in an sich bekannter Weise gestauchten Holz geschnitten werden. Die Einzelblätter sind dann gestaucht und können zu einem Holzblech vereinigt werden, Das in dieser Weise gefertigte Holzblech besitzt die Möglichkeit, sich zu recken, ohne daß der Stoffzusammenhang verlorengeht.The individual sheets can be compressed in various ways. So z. B. the single sheets from a compressed in a known manner Wood to be cut. The single sheets are then compressed and can become a Wood sheet are united, The wood sheet manufactured in this way has the Possibility to stretch without losing the context of the subject.

In der Zeichnung ist beispielsweise veranschaulicht, in # welcher Weise die aus ungestauchtem Holz geschnittenen Einzelblätter gestaucht werden können.For example, the drawing shows in # which Way, the single sheets cut from uncompressed wood can be compressed.

Im ersten Arbeitsgang wird nach Abb. i zwischen zwei wellenförmig geriffelten Walzen w1 w2 ein Einzelblatt h geriffelt. -Alsdann wird im zweiten Arbeitsgang nach Abb. z das so geriffelte Blatt zwischen den ebenen Preßplatten p1 p°, z. B. einer Furnierpresse, wieder eben gepreßt, wobei sich die Welle unter Verkürzung ihrer Länge, d. h. Stauchung und Verdichtung des Stoffes, gerade drücken. Dieser Arbeitsgang kann auch nach Abb.3 so erfolgen, daß das geriffelte Blatt in Richtung der Wellen durch glatte Walzen geht.In the first step, as shown in Fig. I, it is wavy between two corrugated rollers w1 w2 a single sheet h corrugated. -Then the second step according to Fig. B. a veneer press, again pressed flat, with the shaft under shortening their length, d. H. Compression and compression of the fabric, press straight. This Operation can also be carried out according to Fig. 3 so that the corrugated sheet in the direction the waves go through smooth rollers.

Die Holzblätter können sowohl in Richtung der Fasern als auch quer dazu durch die Riffelwalzen geschickt und durch nachfolgendes Niederdrücken der Wellen gestaucht werden. Der Stauchvorgang kann an demselben Blatt mehrmals wiederholt werden. Ein Blatt, das in der einen Richtung bereits gestaucht wurde, kann anschließend auch noch in der zweiten Richtung gestaucht werden.The wood sheets can both in the direction of the fibers and across sent through the corrugated rollers and then by pressing the Waves are compressed. The upsetting process can be repeated several times on the same sheet will. A sheet that has already been compressed in one direction can then can also be compressed in the second direction.

Der Arbeitsgang des Riffelns kann mit dem Leimaufgeben verbunden werden, und beim zweiten Arbeitsgang können gleichzeitig zwei oder mehrere, z. B. nach Abb. q. aufeinandergelegte geriffelte Holzblätter zu einem Holzblech verleimt werden.The fluting operation can be combined with the application of glue, and in the second step, two or more, e.g. B. according to Fig. q. Corrugated wooden sheets placed on top of one another are glued to form a wooden sheet.

Während der Behandlung des Holzwerkstoffes nach den vorstehenden Arbeitsvorschriften können zusätzliche Arbeitsvorgänge eingeschaltet werden, die die Strukturveränderungen des Holzes begünstigen, z. B. Behandlung mit kalten oder warmen Dämpfen oder Flüssigkeiten. Diese Behandlungen können auch den mechanischen Arbeitsvorgängen vorangehen. ,During the treatment of the wood-based material according to the above work instructions additional work processes can be switched on that make structural changes favor the wood, e.g. B. Treatment with cold or warm vapors or liquids. These treatments can also precede the mechanical operations. ,

Claims (1)

PATENTANSPRÜCHE: i. Verfahren zur Verbesserung der Ziehfähigkeit von Holzblechen, dadurch gekennzeichnet, daß die zur Herstellung des Holzbleches verwendeten Einzelblätter aus gestauchtem Holz bestehen. z. Verfahren nach Anspruch i, dadurch gekennzeichnet, daß das Stauchen durch aufeinanderfolgendes Riffeln zwischen Walzen und Glattpressen zwischen parallelen Platten oder glatten Walzen erfolgt.PATENT CLAIMS: i. Process for improving the drawability of Wooden sheets, characterized in that those used to manufacture the wooden sheet Single sheets consist of compressed wood. z. Method according to claim i, characterized characterized in that upsetting is achieved by successive corrugation between rolls and pressing is carried out between parallel plates or smooth rollers.
DEH112774D Process to improve the drawability of wooden sheets Expired DE478504C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH112774D DE478504C (en) Process to improve the drawability of wooden sheets

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH112774D DE478504C (en) Process to improve the drawability of wooden sheets

Publications (1)

Publication Number Publication Date
DE478504C true DE478504C (en) 1929-06-27

Family

ID=7171644

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH112774D Expired DE478504C (en) Process to improve the drawability of wooden sheets

Country Status (1)

Country Link
DE (1) DE478504C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882911C (en) * 1939-04-06 1953-07-13 Munters Ind Aktiebolag Method and device for the production of folded film material, in particular for packaging purposes
DE102008022805A1 (en) * 2008-05-08 2009-11-12 Wolfgang Lacroix Wavy veneer board for use with lightweight board, in e.g. furniture construction, has laminar wood veneers stuck with each other, where veneer board exhibits waveform e.g. zigzag waveform, viewed in longitudinal section

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE882911C (en) * 1939-04-06 1953-07-13 Munters Ind Aktiebolag Method and device for the production of folded film material, in particular for packaging purposes
DE102008022805A1 (en) * 2008-05-08 2009-11-12 Wolfgang Lacroix Wavy veneer board for use with lightweight board, in e.g. furniture construction, has laminar wood veneers stuck with each other, where veneer board exhibits waveform e.g. zigzag waveform, viewed in longitudinal section

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