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
Links
- 239000002023 wood Substances 0.000 title claims description 14
- 238000000034 method Methods 0.000 title claims description 6
- 238000005470 impregnation Methods 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 210000002421 cell wall Anatomy 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DBNPDRYVYQWGFW-UHFFFAOYSA-N N.[Cu]=O Chemical compound N.[Cu]=O DBNPDRYVYQWGFW-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/02—Processes; Apparatus
- B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, 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
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening 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)
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) |
-
1922
- 1922-11-27 CH CH104147D patent/CH104147A/en unknown
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