DE724228C - Process for the remuneration of fresh wood veneers by cold rolling - Google Patents
Process for the remuneration of fresh wood veneers by cold rollingInfo
- Publication number
- DE724228C DE724228C DEJ66581D DEJ0066581D DE724228C DE 724228 C DE724228 C DE 724228C DE J66581 D DEJ66581 D DE J66581D DE J0066581 D DEJ0066581 D DE J0066581D DE 724228 C DE724228 C DE 724228C
- Authority
- DE
- Germany
- Prior art keywords
- veneers
- remuneration
- cold rolling
- wood veneers
- fresh wood
- 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
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/02—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by compressing
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Manufacture Of Wood Veneers (AREA)
Description
Verfahren zur Vergütung von frischen Holzfurnieren durch Kaltwalzen Das Verfahren nach Patent 7 18 o96 kann in bezug auf die Behebung der vielen beim Messern und Schälen zwangsläufig infolge des Messerdrucks entstehenden Beschädigungen des inneren Holzgefüges ganz # wesentlich durch folgende neue Behandlung der nassen Furniere verbessert werden.Process for the remuneration of fresh wood veneers by cold rolling The process according to patent 7 1 8 096 can be improved significantly by the following new treatment of the wet veneers with regard to the elimination of the many damage to the inner wood structure that inevitably occurs during knives and peeling as a result of knife pressure.
Die Erfindung geht davon aus, daß die Veränderungen des Holzgefüges durch den Druck der Messer auf die stark erweichte und vielfach zerdrückte Holzmasse bewirkt sind, so daß die Holzfaserbündel auseinandergetrieben und zerrissen sind. Bei Schälfurnieren kommt noch hinzu, daßr diese Schäden beim Flachlegen der rundgeschnittenen. Furniere noch vergrößert werden und weitere feinste Rißchen auf der Innenseite der Schälfurniere entstehen.The invention assumes that the changes in the wood structure by the pressure of the knife on the heavily softened and often crushed wood mass are caused so that the wood fiber bundles are driven apart and torn. In the case of peeled veneers, there is also the fact that this damage occurs when the round cut veneers are laid flat. Veneers are still enlarged and further fine cracks on the inside of the Rotary veneers are created.
Diese Beschädigungen lassen sich fast ,ganz wieder beseitigen, wenn man die noch weichen und feuchten Furniere etwa so, wie sie aus der Schäl.- oder Messermaschine kommen, in der dem Messerdruck entgegengesetzten Richtung zwischen zwei Walzen unter kräftigem Druck walzt. Hierdurch werden die Holzfaserbündel wieder in ihre frühere natürliche Lage zurückgedrückt und die zahlreichen kleinsten und größeren Risse geschlossen. Ein Zusammenpressen der Holzmasse wie bei dem Hauptpatent findet dabei nicht oder nur in beschränktestem Umfange - z. B. bei Schälfurnieren auf der rissigen Innenseite -statt, soweit das in den Holzfasern enthaltene Wasser ein Zusammenpressen zuläßt. Es vollzieht sich bei dem neuen Verfahren vielmehr nur eine Zurücklagerung der Holzfaser entgegen der durch den vorangegangenen Messerdruck erfolgten Verschiebung.This damage can almost, completely, be eliminated if the still soft and moist veneers roughly as they are from the peeling or Knife machine come, in the direction opposite to the knife pressure between rolls two rollers under strong pressure. This will restore the wood fiber bundles pushed back into their previous natural position and the numerous smallest and larger cracks closed. A compression of the wood mass as in the main patent does not take place, or only to a very limited extent - z. B. with peeled veneers on the cracked inside instead of the water contained in the wood fibers allows compression. Rather, it just happens with the new procedure a back storage of the wood fiber contrary to that caused by the previous knife pressure postponed.
Wohl gibt es Furnierschneidemaschinen, bei welchen nach dem Schälen zum Zwecke des Wasserentzuges die Furniere durch elastische Walzen oder geheizte Walzen hindurchgeführt werden; allein, da dieser Arbeitsprozeß in der Messerrichtung geschieht, wird dadurch genau- das Gegenteil von dem erreicht, was die vorliegende Erfindung bezweckt, weil bei diesem bekannten Verfahren die Holzfasern`-. in .derselben Richtung noch mehr auseinandergetrieben werden, als dies durch den Messerdruck schon der Fall was.There are veneer cutting machines in which, after peeling, the veneers are passed through elastic rollers or heated rollers for the purpose of dehydration; only, since this working process takes place in the knife direction, is achieved exactly the opposite of what the present invention aims, because in this known method the wood fibers. be driven apart even more in the same direction than was already the case by the pressure of the knife.
Es wird also durch das neue Verfahren -las ursprüngliche Holzgefüge sofort wiederhergestellt, was sich beim nachfolgenden Trocknen in giinstigem Sinne auswirkt. In bezug auf eine Gesamtvergütung ist es aber notn"endig, um einen vollen Erfolg hinsichtlich Vergütung zu erreichen, daß diese Vorbehandlung später nach dem Trocknen der Furniere auch noch eine Nachbehandlung im Sinne des Hauptpatents erfährt.The new process means that it becomes the original wood structure immediately restored, which was found in the subsequent drying in a favorable sense affects. In terms of total compensation, however, it is necessary to get a full To achieve success in terms of remuneration that this pretreatment later after After drying the veneers, there is also an aftertreatment in the sense of the main patent learns.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ63937D DE718096C (en) | 1939-03-01 | 1939-03-01 | Process for the finishing of wood veneers by cold rolling |
DEJ66581D DE724228C (en) | 1939-03-01 | 1940-02-28 | Process for the remuneration of fresh wood veneers by cold rolling |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ63937D DE718096C (en) | 1939-03-01 | 1939-03-01 | Process for the finishing of wood veneers by cold rolling |
DEJ65926D DE726929C (en) | 1939-03-01 | 1939-11-10 | Process for the finishing of glued wood veneers |
DEJ66581D DE724228C (en) | 1939-03-01 | 1940-02-28 | Process for the remuneration of fresh wood veneers by cold rolling |
Publications (1)
Publication Number | Publication Date |
---|---|
DE724228C true DE724228C (en) | 1942-08-20 |
Family
ID=27211116
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ63937D Expired DE718096C (en) | 1939-03-01 | 1939-03-01 | Process for the finishing of wood veneers by cold rolling |
DEJ66581D Expired DE724228C (en) | 1939-03-01 | 1940-02-28 | Process for the remuneration of fresh wood veneers by cold rolling |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ63937D Expired DE718096C (en) | 1939-03-01 | 1939-03-01 | Process for the finishing of wood veneers by cold rolling |
Country Status (1)
Country | Link |
---|---|
DE (2) | DE718096C (en) |
-
1939
- 1939-03-01 DE DEJ63937D patent/DE718096C/en not_active Expired
-
1940
- 1940-02-28 DE DEJ66581D patent/DE724228C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
DE718096C (en) | 1942-03-03 |
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