EP0052648A1 - Procede et agent de traitement en surface du bois, en particulier des surfaces de meubles en pin en grume - Google Patents

Procede et agent de traitement en surface du bois, en particulier des surfaces de meubles en pin en grume

Info

Publication number
EP0052648A1
EP0052648A1 EP19810901706 EP81901706A EP0052648A1 EP 0052648 A1 EP0052648 A1 EP 0052648A1 EP 19810901706 EP19810901706 EP 19810901706 EP 81901706 A EP81901706 A EP 81901706A EP 0052648 A1 EP0052648 A1 EP 0052648A1
Authority
EP
European Patent Office
Prior art keywords
wood
base
concentration
treatment
shade
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.)
Withdrawn
Application number
EP19810901706
Other languages
German (de)
English (en)
Inventor
Sven Eric Bagger
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0052648A1 publication Critical patent/EP0052648A1/fr
Withdrawn legal-status Critical Current

Links

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
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/02—Staining or dyeing wood; Bleaching wood
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
    • B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
    • 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
    • B27K3/0278—Processes; Apparatus involving an additional treatment during or after 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
    • B27K2240/00—Purpose of the treatment
    • B27K2240/50—Ageing

Definitions

  • a method and an agent for surface treatment of wood, particularly furniture surfaces of undressed pinewood are provided.
  • the present invention relates to a method of chemically treating wooden surfaces, particularly furniture or furniture parts of pinewood, for accentuating the wood structure by affecting the colour of the surface parts, whereby the wooden surface is treated by a tannin solution and thereafter subjected to a lye treatment. It is a very old knowledge that the vein structure or play in a surface of oakwood can be strongly accentuated by a so-called acid-washing treatment and that such a treatment gives rise to a very characteristic and drastic change of the colour of the wood, whereby no "natural" colour is aimed at.
  • the example relates to a piece of furniture, e.g. a chair or a cupboard made of fresh pinewood, the visible surfaces of which should be treated for patination and accentuation of the surface play.
  • the treating liquids can be applied manually or by dipping the entire piece of furniture into a bath of the particular liquid.
  • a tannin solution is applied to the wood, preferably with a concentration of ca. 0.75%, a preferred component being "Pyrogallol" ("white chip") dissolved in demineralized water, if desired with a small amount of a relaxation agent and a tracer agent, the latter of course being superfluous when the solution is applied by dipping of the entire piece of furniture into the solution.
  • the solution may be prepared from 7.5 g Pyrogallol to one litre of demineralized water.
  • the workpiece or the relevant surfaces thereof is or are treated by soda lye of a concentration of 0.92-0.98% (NaOH dissolved in demineralized water), and the workpiece is allowed to dry for at least 3 hours.
  • the soda lye may be prepared from liquid NaOH, 34°BE, 27.65% (technical 33%) mixed in the proportion 1:35 with demineralized water.
  • an acid-free plastic lacquer e.g. No. 1302 LS is applied to the workpiece or the relevant surfaces, and the lacquer is allowed to dry for at least one hour, whereafter the relevant surfaces are smoothed by means of grinding paper, e.g. grain 320, with subsequent wiping or brushing off of the slip. If desired, a further layer of lacquer may thereafter be applied to the relevant surfaces.
  • the treating liquids are based on distilled or demineralized water and that the workpiece is subjected to the said lacquering once or still better twice.
  • An essential parameter is the concentration of the base solution. Normally it should be somewhere between 0.9% and 1.0%, but the exact or optimal concentration will depend on the local character of the pinewood. However, to those skilled in the art it will be easy to select the correct percentage of the base solution for obtaining the desired true to nature colour shading of the particular wood as seen in its patinated condition.
  • demineralized water as a solvent mainly refers to a desired lack of iron in the water, because even a relatively small amount of iron in the water will affect the colour shade of the product adversely.
  • demineralized water there are several geographic regions in which the natural water has such a low iron contents that it is directly usable in the method according to the invention.

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)

Abstract

Pour accentuer la structure des veines en surface du pin, en particulier des meubles en pin, le bois est soumis a un traitement acide/lessive, qui affecte la teinte du bois frais. Au lieu d'essayer d'obtenir une teinte claire correspondant au bois en brume, dont la teinte de la couleur naturelle est pratiquement impossible de conserver ou de reproduire, l'invention vise a obtenir une teinte plus sombre, qui peut etre obtenue sous forme d'une teinte vraiment naturelle du bois patine, bien que cela s'applique a du vieux bois en grume. Le resultat est obtenu essentiellement en utilisant une lessive liquide relativement concentree.
EP19810901706 1980-06-03 1981-06-03 Procede et agent de traitement en surface du bois, en particulier des surfaces de meubles en pin en grume Withdrawn EP0052648A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK237480A DK237480A (da) 1980-06-03 1980-06-03 Fremgangsmaade til overfladebehandling af trae navnlig moebeloverflader af fyrretrae
DK2374/80 1980-06-03

Publications (1)

Publication Number Publication Date
EP0052648A1 true EP0052648A1 (fr) 1982-06-02

Family

ID=8111940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810901706 Withdrawn EP0052648A1 (fr) 1980-06-03 1981-06-03 Procede et agent de traitement en surface du bois, en particulier des surfaces de meubles en pin en grume

Country Status (4)

Country Link
EP (1) EP0052648A1 (fr)
DK (1) DK237480A (fr)
SE (1) SE8200595L (fr)
WO (1) WO1981003459A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1024271C2 (nl) * 2003-09-11 2005-03-21 Albert Eltjo Doewe Capelleveen Geloogde vloerplanken.
LT6135B (lt) * 2013-05-24 2015-03-25 Uab "Grigo" Juodojo ąžuolo gamybos būdas
ES2894574R1 (es) * 2020-07-28 2022-02-24 Mestre Jose Escorihuela Proceso de envejecimiento de madera de coníferas con sosa cáustica NA(OH)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK22898C (da) * 1916-07-10 1918-03-18 Hans Kristoffer Grini Fremgangsmaade til Farvning og Konservering af Træ.
GB152427A (en) * 1919-07-14 1920-10-14 Roland Edgar Slade An improved process for colouring wood grey or black
GB189268A (en) * 1921-09-08 1922-11-30 Malcolm Sparkes Improvements in the treatment of wood and in treated wood
US1925749A (en) * 1931-11-25 1933-09-05 Tannin Corp Method of making mahogany stain

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8103459A1 *

Also Published As

Publication number Publication date
WO1981003459A1 (fr) 1981-12-10
DK237480A (da) 1980-08-22
SE8200595L (sv) 1982-02-02

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19820803