CH104147A - Process for compacting wood. - Google Patents

Process for compacting wood.

Info

Publication number
CH104147A
CH104147A CH104147DA CH104147A CH 104147 A CH104147 A CH 104147A CH 104147D A CH104147D A CH 104147DA CH 104147 A CH104147 A CH 104147A
Authority
CH
Switzerland
Prior art keywords
wood
compacting
impregnation
compacting wood
dissolving
Prior art date
Application number
Other languages
German (de)
Inventor
Holzveredelung G M B H
Original Assignee
Holzveredelung G M B H
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Holzveredelung G M B H filed Critical Holzveredelung G M B H
Publication of CH104147A publication Critical patent/CH104147A/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02Processes; Apparatus
    • B27K3/08Impregnating by pressure, e.g. vacuum impregnation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27KPROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/06Softening or hardening of wood

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Description

  

  Verfahren zum Verdichten von Holz.    Es sind Verfahren bekannt, um Holz  durch starken Druck, zum Beispiel auch un  ter Erwärmung, zu verdichten. Diese Ver  fahren ergeben teilweise Hölzer, die sich  durch hohes spezifisches Gewicht, grosse  Härte und     gut-,    Polierfähigkeit     auszeichnen.     Die so erhaltenen Hölzer sind aber alle  nicht widerstandsfähig gegen längere Be  einflussung durch Wasser; sie quellen mehr  oder minder wieder auf. Ganz besonders tritt  dieser Übelstand bei harzarmen Hölzern auf.  Man hat versucht. diesen Übelstand durch  Einführung von Harzlösungen oder ähnlich  wirkenden Substanzen vor dem     Pressen    zu  beseitigen.

   Zu einem wirklichen Erfolg ist  man aber nie gekommen, weil die Ein  führung zähflüssiger Stoffe in das Holz  zu schwierig ist und ausserdem derartige  Imprägnierungen die Homogenität des Hol  zes stören.  



  Es wurde nun gefunden, dass man den  gleichen Erfolg erzielt, Renn das Holz vor  oder während der Pressung mit einem       zelluloselösenden    Stoffe getränkt wird, wel  cher in dem Holze selbst durch teilweise  Lösung der Zellwände eine verklebende Im  prägnierung des Holzes entstehen lässt. Die    verklebende Masse     verhärtet    nachher voll  kommen wasserunlöslich und hat ihr     Q,uel-          lungsvermögen    verloren.  



  Beispielsweise kann man das Holz unter  Druck mit     Kupferoxyd-Ammonialt    durch  tränken und starkem Drucke aussetzen; da  durch werden die Zellwände vollkommen mit  einander verklebt, und es entsteht eine horn  artige, homogene Masse.



  Process for compacting wood. Processes are known for compacting wood by means of strong pressure, for example also under heating. These methods sometimes result in woods that are characterized by high specific weight, great hardness and good polishing ability. However, the woods obtained in this way are all not resistant to prolonged exposure to water; they swell up more or less again. This drawback occurs particularly in woods that are poor in resin. One tried. to eliminate this problem by introducing resin solutions or substances with a similar effect before pressing.

   But one has never achieved any real success because the introduction of viscous substances into the wood is too difficult and, moreover, such impregnations disturb the homogeneity of the wood.



  It has now been found that the same success can be achieved by soaking the wood before or during pressing with a cellulose-dissolving substance, which creates an adhesive impregnation of the wood in the wood itself by partially dissolving the cell walls. The adhesive mass then hardens, becomes completely insoluble in water and has lost its ability to cool.



  For example, the wood can be soaked under pressure with copper oxide ammonia and exposed to strong pressure; as a result, the cell walls are completely glued together, and a horn-like, homogeneous mass is created.

 

Claims (1)

PATENTANSPRUCH: Verfahren zum Verdichten von Holz, dadurch gekennzeichnet, dass das Holz mit einem zelluloselösenden Stoff getränkt wird, welcher in dem Holze selbst durch teilweise Lösung der Zellwände eine verklebende Im prägnierung des Holzes entstehen lässt. UNTERANSPRUCH: Verfahren gemäss Patentanspruch, da durch gekennzeichnet, dass während oder nach der Imprägnierung das Holz einem Drucke unterworfen wird, der senkrecht zur Faserrichtung, in der Faserrichtung oder in mehreren Richtungen gleichzeitig wirkt. PATENT CLAIM: A method for compacting wood, characterized in that the wood is impregnated with a cellulose-dissolving substance, which creates an adhesive impregnation of the wood in the wood itself by partially dissolving the cell walls. SUBClaim: Method according to claim, characterized in that during or after the impregnation the wood is subjected to a pressure which acts perpendicular to the grain direction, in the grain direction or in several directions simultaneously.
CH104147D 1922-11-27 1922-11-27 Process for compacting wood. CH104147A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH104147T 1922-11-27

Publications (1)

Publication Number Publication Date
CH104147A true CH104147A (en) 1924-04-01

Family

ID=4362966

Family Applications (1)

Application Number Title Priority Date Filing Date
CH104147D CH104147A (en) 1922-11-27 1922-11-27 Process for compacting wood.

Country Status (1)

Country Link
CH (1) CH104147A (en)

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