EP0125728A1 - Procédé de traitement du bois et produit pour le traitement du bois - Google Patents

Procédé de traitement du bois et produit pour le traitement du bois Download PDF

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Publication number
EP0125728A1
EP0125728A1 EP84200666A EP84200666A EP0125728A1 EP 0125728 A1 EP0125728 A1 EP 0125728A1 EP 84200666 A EP84200666 A EP 84200666A EP 84200666 A EP84200666 A EP 84200666A EP 0125728 A1 EP0125728 A1 EP 0125728A1
Authority
EP
European Patent Office
Prior art keywords
wood
capsule
wood preservative
recess
preservative
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.)
Granted
Application number
EP84200666A
Other languages
German (de)
English (en)
Other versions
EP0125728B1 (fr
Inventor
Jacob Woudsma
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
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT84200666T priority Critical patent/ATE22033T1/de
Publication of EP0125728A1 publication Critical patent/EP0125728A1/fr
Application granted granted Critical
Publication of EP0125728B1 publication Critical patent/EP0125728B1/fr
Expired legal-status Critical Current

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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

Definitions

  • the invention relates to a process for treating wood in which a wood preservative is inserted into one or more recesses made in wood, whereupon these recesses are closed outwardly.
  • the treatment of wood with a wood preservative aims at protecting the wood preventively or curatively against attack by moisture, micro-organisms (for instance Basidiocymetes, Asomycetes), insects (for instance termites, Hylotropus Bajulus, Anobium Pictatum).
  • micro-organisms for instance Basidiocymetes, Asomycetes
  • insects for instance termites, Hylotropus Bajulus, Anobium Pictatum.
  • a similar process is generally known.
  • a capsule is used.
  • a drawback of this process is that wooden beams, window-frames, etc. forming part of supporting structures or wooden elements which are regularly charged, are weakened as a consequence of the remaining holes.
  • Another drawback is that the user of the capsules when breaking the capsules may come into contact with the contents thereof.
  • the invention provides a process which meets the above-mentioned drawbacks.
  • a solid material is applied in the recess together with the wood preservative in such a way that this solid material at least partly fills up the recess, said solid material having a reinforcing effect upon this wood when it absorbs water and expands in consequence thereof and/or when a permanent pressure is exerted upon it.
  • wood is applied having a lower water content than the wood treated, most preferably resin-free splint-wood or heart-wood.
  • Splint-wood is young wood and has a less resin-rich cell structure than has for instance heart-wood. This property is of importance in view of the absorption capacity of the wood and the capacity to absorb free liquid.
  • the wood material that is applied in the recesses of the wood to be treated in such a way therein that the wood preservative present therein is released in the direction of the fibres of the wood material applied.
  • the fibre direction of the wooden plug is the radial direction so that the fibre direction is the same as that of the surrounding wood.
  • the wooden plug Owing to the process according to the invention a material being applied in the recesses together with the wood preservative having ) a lower water content that the wood treated, the wooden plug will start absorbing water after application and in result expand more than the directly surrounding wood shrinks. In result a reinforcing effect is exerted upon the surrounding wood.
  • wood contains water. This water can be present in two forms, to wit bound to the cell walls, the so-called inhibition water, and as free water in the cell cavities and vessels. This water is usually indicated as capillary or occlusion water. This water is present only if the cell walls are completely saturated.
  • the free water disappears from the cell cavities.
  • the inhibition water amounts to about 29 % at a maximum.
  • a wood humidity of about 17 % is created, at which a shrinkage of 1.25 % in radial and 0.1 % in the fibre direction occurs.
  • a deal plug which is provided with a wood preserving organic agent and a moisture content of about 10 %, will expand after application in the wood to be treated which is in constant contact with the open air and in result thereof has a higher moisture content.
  • this has on the surrounding wood also a stabilising effect occurs because the moisture content of the plate treated decreases. This is in particular important for critical spots sensitive to wood attack. For if here the moisture content will surpass 21 % the chance that the wood decay fungi most occurring in Europe, such as Polystictus versocolor, Coniopohra Puteana, Gloephillum tradeuym are developed, is very great.
  • the invention also relates to a product for treating wood, comprising a wood preservative, optionally packed in a wrapping of protective material, which wrapping is smashed up upon exertion of pressure from inside, said product being characterized in that that an absorbing material having a moisture content below 16 % which expand on absorption of water, is present. It is preferable to have the absorbing material consist of wood, most preferably splint wood. Also cork is considered because it is a bit compressible.
  • the portion of the plug applied in the recess last is not oversaturated with the wood protective agent. This is of great importance in applying the plug for the sake of security of the users. Also, this has the great advantage that the wood protective agent cannot splash or run off after opening the packing or canp run off in open seams of window frames.
  • the impregnated plug can be provided on one end with an impermeable medium, for instance a galvanized wood screw, which closes the whole boring hole opening when applied. It is also possible to apply a non-impregnated plug on one end which by means of a compressible sealing disc for instance of aluminium foil is separated from the impregnated portion.
  • the plug according to figure 1 substantially consists of absorbent material having a low water content, for instance cork, wood flour, wood shavings, etc. Portion 1 is not impregnated with a wood protective agent.
  • Portion 2 is impregnated with the wood preservative. Both portions are mutually separated by a film of compressible material 3, which may for instance consist of a remainder of the packing material in which the plug was packed before use or of glue or resin. Partition 3 prevents the wood preservative in the impregnated portion 2 from penetrating in the non-impregnated portion 1, when in applying the plug in a recess of wood pressure is exerted on portion 1. If in the absorbent material a glue is present, the glue runner 4 sees to it that any excess of glue present cannot escape outwards.
  • the impregnated portion clamps in the non-pregnated portion.
  • connection between the non-impregnated and impregnated portions is realized by means of a galvanized headless iron screw 5.
  • a screw made of plastic material, for instance polyurethane, is considered.
  • connection between the non-impregnated portion and the impregnated portion of the absorbent material is effected by means of a bayonet catch.
  • a spring 6 on the inside and a compressible packing both portions can expand without the total length of the plug being influenced. This is of great importance in view of the stability of the plug in the wood and for a paint layer applied thereover.
  • a glass capsule 8 to which a non-impregnated plug 1 has been screwed.
  • a sealing ring 11 made of for instance cork with aluminium foil or rubber sees to it that the wood protective agent in the impregnated portion 2 cannot diffuse in the portion 1.
  • the glass wrapping breaks and the broken glass and the absorbent material are impressed in such a way that the whole boring hole is filled up completely all the same. After some time the absorbent mass will expand by moisture absorption from the surrounding wood and extra reinforce the whole.
  • Figure 6 also relates to an embodiment with a glass wrapping.
  • a galvanized iron screw 9 is present.
  • the screw When placing the capsule the screw will smash the glass wrapping and will in consequence be anchored fixedly in the surrounding absorbing material.
  • This embodiment has the advantage that no glue need be used, whilst moreover no wood protective agent can escape along the screw. There is no chance of splashing when applying the capsule either.
  • the whole can be finished with a wood repair agent, so that also the substrate for the paint system to be applied over it is fully suitable for applying the paint over it.
  • a flat screw 9 of galvanized iron or a plastic and a closed capsule of glass use is made of a flat screw 9 of galvanized iron or a plastic and a closed capsule of glass.
  • the capsule is surrounded by a thin foil of plastic, for instance polyethylene foil or of polyvinylchloride foil.
  • the whole is constructed such that after application of the glass capsule in the boring hole the capsule can be smashed by screwing the screw on.
  • the wood protective agent can penetrate the wood to be protected.
  • the capsule with screw can also be wrappened in nylon or galvanized gauze (8). Also this packing need not be removed, no more than a wrapping of plastic foil before applying the capsule in the boring hole.
  • This embodiment has the advantage over the known capsule, the wrapping of which consists wholly of glass, that after inserting the capsule into the boring hole, the screw applied as closure is inserted into the boring hole simultaneously with the capsule.
  • a closing plug is to be applied in a separate act. It then could happen that such a plug was inserted after it had been forgotten to apply first the glass capsule. This is impossible when applying a closing screw, which is applied integrally with the capsule.
  • Figure 10 relates to an embodiment in which use is made of a unit consisting of a sealed capsule (8) of smashable material, for instance glass, filled with a solution of a wood preservative and a plug (1) of material impermeable to wood preservative, for instance heart-wood, fixedly connected therewith for instance by glueing.
  • a wood preservative for instance wood
  • the plug consists of hardwood, in particular of European oak, the plug moreover does not deform in smashing.
  • the plug is internally provided with a cavity (12) into which a protruding portion (13) of the sealed capsule fits, yet a relative large amount of wood preservative can be taken up into the unit, although a large part of the length of this unit is taken by the plug. This is in particular of importance when treating wood structures having a smaller thickness, for instance window-frames.
  • the wrapping material of the capsule for instance the glass such that it does not transmit ultraviolet light. This promotes the keeping qualities of the wood preservative present in it.
  • wood preservative is to be understood in the broadest sense.
  • agents which as such do not exert a killing effect on living organisms, but see to a medium in which living organisms cannot multiply are meant.
  • a solution of paraffin in an organic solvent can be applied. When this solution penetrates into the spaces between the wood fibres and the organic solvent evaporates partially, the paraffin remains in the spaces, in result of which no living organisms can develop therein.

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)
EP84200666A 1983-05-11 1984-05-10 Procédé de traitement du bois et produit pour le traitement du bois Expired EP0125728B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84200666T ATE22033T1 (de) 1983-05-11 1984-05-10 Verfahren zur behandlung von holz und produkt zur behandlung von holz.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL8301694A NL8301694A (nl) 1983-05-11 1983-05-11 Werkwijze voor het behandelen van hout alsmede voortbrengsel ter behandeling van hout.
NL8301694 1983-05-11

Publications (2)

Publication Number Publication Date
EP0125728A1 true EP0125728A1 (fr) 1984-11-21
EP0125728B1 EP0125728B1 (fr) 1986-09-10

Family

ID=19841846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200666A Expired EP0125728B1 (fr) 1983-05-11 1984-05-10 Procédé de traitement du bois et produit pour le traitement du bois

Country Status (4)

Country Link
EP (1) EP0125728B1 (fr)
AT (1) ATE22033T1 (fr)
DE (1) DE3460674D1 (fr)
NL (1) NL8301694A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987005251A1 (fr) * 1986-03-03 1987-09-11 Jacob Woudsma Tampon
EP0139318B1 (fr) * 1983-08-26 1988-07-27 Woodcap B.V. Une ampoule contenant une composition préservative du bois attachée à une capsule de fermeture servant à boucher un trou dans le bois destiné à recevoir l'ampoule en question et une capsule de fermeture de ce type appropriée
EP0283100A1 (fr) * 1987-03-20 1988-09-21 Window Care B.V. Agent préservateur du bois et procédé pour préserver du bois

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732671C (de) * 1934-05-19 1943-03-09 Erich Krause Dipl Ing Stabfoermiger, zur Einfuehrung in Holz dienender Impraegnierstofftraeger
DE928850C (de) * 1952-10-03 1955-06-13 Hermann Dr-Ing Gewecke Verfahren zum Impraegnieren von Holz
DE2812697A1 (de) * 1977-03-29 1978-10-05 Hoeka Sierpleisters Muurverven Verfahren zur behandlung von holz mit einem konservierungsmittel und nach diesem verfahren behandelte holzerzeugnisse
EP0050839A1 (fr) * 1980-10-29 1982-05-05 BASF Lacke + Farben AG Méthode de traitement du bois et utilisation d'un agent absorbant l'eau

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE732671C (de) * 1934-05-19 1943-03-09 Erich Krause Dipl Ing Stabfoermiger, zur Einfuehrung in Holz dienender Impraegnierstofftraeger
DE928850C (de) * 1952-10-03 1955-06-13 Hermann Dr-Ing Gewecke Verfahren zum Impraegnieren von Holz
DE2812697A1 (de) * 1977-03-29 1978-10-05 Hoeka Sierpleisters Muurverven Verfahren zur behandlung von holz mit einem konservierungsmittel und nach diesem verfahren behandelte holzerzeugnisse
EP0050839A1 (fr) * 1980-10-29 1982-05-05 BASF Lacke + Farben AG Méthode de traitement du bois et utilisation d'un agent absorbant l'eau

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0139318B1 (fr) * 1983-08-26 1988-07-27 Woodcap B.V. Une ampoule contenant une composition préservative du bois attachée à une capsule de fermeture servant à boucher un trou dans le bois destiné à recevoir l'ampoule en question et une capsule de fermeture de ce type appropriée
WO1987005251A1 (fr) * 1986-03-03 1987-09-11 Jacob Woudsma Tampon
AU611641B2 (en) * 1986-03-03 1991-06-20 Jacob Woudsma A plug
US5052333A (en) * 1986-03-03 1991-10-01 Jacob Woudsma Plug
EP0283100A1 (fr) * 1987-03-20 1988-09-21 Window Care B.V. Agent préservateur du bois et procédé pour préserver du bois

Also Published As

Publication number Publication date
EP0125728B1 (fr) 1986-09-10
ATE22033T1 (de) 1986-09-15
NL8301694A (nl) 1984-12-03
DE3460674D1 (en) 1986-10-16

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