EP0125728B1 - Verfahren zur Behandlung von Holz und Produkt zur Behandlung von Holz - Google Patents

Verfahren zur Behandlung von Holz und Produkt zur Behandlung von Holz Download PDF

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Publication number
EP0125728B1
EP0125728B1 EP84200666A EP84200666A EP0125728B1 EP 0125728 B1 EP0125728 B1 EP 0125728B1 EP 84200666 A EP84200666 A EP 84200666A EP 84200666 A EP84200666 A EP 84200666A EP 0125728 B1 EP0125728 B1 EP 0125728B1
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.)
Expired
Application number
EP84200666A
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English (en)
French (fr)
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EP0125728A1 (de
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/de
Application granted granted Critical
Publication of EP0125728B1 publication Critical patent/EP0125728B1/de
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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 pre- ventively or curatively against attack by moisture, micro-organisms (for instance Basidiocymetes, Asomycetes), insects (for instance termites, Hylo- tropus Bajulus, Anobium Pictatum).
  • micro-organisms for instance Basidiocymetes, Asomycetes
  • insects for instance termites, Hylo- tropus Bajulus, Anobium Pictatum.
  • a similar process is generally known.
  • a capsule is used.
  • the process followed is then that first a hole is drilled in the wood, subsequently a glass capsule with the wood preservative is inserted into it and finally the drilling hole is closed with a plug, which is applied in it in a recess, in result of which the capsule breaks and its contents are freed and spread in the wood.
  • 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.
  • 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 versoclolor, Coniopohra Puteana, Gloephillum tradeuym are developed, is very great.
  • the invention also relates to a product for treating wood, comprising a wood preservative, and an absorbing material having a moisture content below 16% which expands on absorption of water, which material is enveloped by packing material which should largely be removed prior to use.
  • this envelope consist of a capsule of smashable material, for instance glass.
  • the absorbing material consist of wood, most preferably splint wood.
  • cork is considered because it is a bit compressible. For if no protecting wrapping is applied it is advantageous to have the product according to the invention which is applied in a recess of the wood to be treated, taper a bit, so that the diameter of the portion of the plug which closes the recess present in the wood to be treated from the outside is somewhat larger than the bore-hole.
  • the plug is anchored even more fixedly and no wood protective agent or glue which is present in the plug, can escape along the plug. If one wishes to glue the plug in the recess, one applied glue at the head of the plug and/or along the plug. By providing the plug with a recess, any excess of the glue is caught herein, so that the glue cannot come into contact with paint applied on the outside of the plug. In result thereof discoloration of the paint is prevented.
  • 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 can 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.
  • 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.
  • 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 wrapped 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.

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  • 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)

Claims (10)

1. Verfahren zum Behandeln von Holz durch Einbringen eines Holzschutzmittels in eine oder mehrere im Holz befindliche Ausnehmungen, worauf diese Ausnehmung auch nach außen abgeschlossen wird, dadurch gekennzeichnet, daß mit dem Holzschutzmittel ein festes Material in die Ausnehmung derart eingebracht wird, daß dieses die Ausnehmung zumindest teilweise ausfüllt, wobei besagtes festes Material einen geringeren Wassergehalt als das behandelte Holz aufweist und auf dieses einen Verstärkungseffekt ausübt, wenn es Wasser absorbiert und sich demzufolge aufweitet.
2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das feste Material mit dem niedrigeren Wassergehalt harzfreies Splintholz oder Kernholz ist.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß das in die Ausnehmungen des zu behandelnden Holzes einzubringende Holzmaterial darin in solcher Weise eingebracht wird, daß die Abgabe des darin vorhandenen Holzschutzmittels in Richtung der Fasern dieses Holzes erfolgt.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Kombination von Holzschutzmittel und festem Material in die Ausnehmung in der Form einer Kapsel aus zertrümmerbarem Material eingebracht wird, welches nach Einsetzen der Kapsel in die Ausnehmung zertrümmert wird.
5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß die Kapsel versiegelt ist und eine Lösung des Holzschutzmittels enthält und am Oberteil mit dem festen, einen niedrigen Wassergehalt aufweisenden Material versehen ist, welches Material nach Einsetzen der Kapsel in die Ausnehmung einwärts geschmettert wird, wodurch es die Kapsel zertrümmert und das Verschließen der Ausnehmung bewirkt.
6. Ein ein Holzschutzmittel enthaltendes Erzeugnis für das Behandeln von Holz, dadurch gekennzeichnet, daß ein absorbierendes Material vorgesehen ist, das einen Feuchtigkeitsgehalt von weniger als 16 Gew.-% aufweist und sich beim Absorbieren von Wasser ausdehnt, und daß dieses Material zusammen mit dem Holzschutzmittel durch Verpackungsmaterial umhüllt ist, welches vor dem Gebrauch weitgehend entfernt werden sollte.
7. Ein Erzeugnis nach Anspruch 6, dadurch gekennzeichnet, daß das feste, einen Wassergehalt von weniger als 16 Gew.-% aufweisende Material aus einem mit Holzschutzmittel nicht getränkten Teil und aus einem mit Holzschutzmittel getränkten Teil besteht.
8. Ein Erzeugnis nach Anspruch 7, dadurch gekennzeichnet, daß der mit Holzschutzmittel getränkte Teil von dem nicht getränkten Teil mittels einer zusammendrückbaren Dichtungsscheibe getrennt ist.
9. Ein Erzeugnis nach irgendeinem der Ansprüche 6 bis 8, bestehend aus einer Kapsel aus zertrümmerbarem Material, zum Beispiel Glas, in welcher sich ein Holzschutzmittel befindet und welche durch einen als Schraube ausgebildeten Verschluß gekennzeichnet ist, der gleichzeitig zusammen mit der Kapsel in ein Bohrloch eingesetzt werden kann.
10. Ein Erzeugnis nach irgendeinem der Ansprüche 6 bis 9, bestehend aus einer versiegelten Kapsel aus zertrümmerbarem Material, zum Beispiel Glas, in welcher sich eine Lösung eines Holzschutzmittels befindet, und aus einem mit derselben oben verbundenen Stopfen aus einem für das Holzschutzmittel vorzugsweise undurchlässigem Material, beispielsweise Kernholz.
EP84200666A 1983-05-11 1984-05-10 Verfahren zur Behandlung von Holz und Produkt zur Behandlung von Holz Expired EP0125728B1 (de)

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 EP0125728A1 (de) 1984-11-21
EP0125728B1 true EP0125728B1 (de) 1986-09-10

Family

ID=19841846

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84200666A Expired EP0125728B1 (de) 1983-05-11 1984-05-10 Verfahren zur Behandlung von Holz und Produkt zur Behandlung von Holz

Country Status (4)

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

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8302998A (nl) * 1983-08-26 1985-03-18 Woodcap Bv Ampul met houtaantastingbestrijdende samenstelling met afsluitdop en hiervoor geschikte afsluitdop.
NL8600528A (nl) * 1986-03-03 1987-10-01 Woudsma Jacob Afsluitstop.
NL8700658A (nl) * 1987-03-20 1988-10-17 Performance Innovation B V Houtverduurzamingsmiddel en werkwijze voor het verduurzamen van hout.

Family Cites Families (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
NL176533C (nl) * 1977-03-29 1985-05-01 Woodcap Bv Werkwijze voor het behandelen van hout.
DE3040623C2 (de) * 1980-10-29 1982-12-09 Basf Farben + Fasern Ag, 2000 Hamburg Verfahren zur Behandlung von Holz und Verwendung eines wasserbindenden Mittels

Also Published As

Publication number Publication date
EP0125728A1 (de) 1984-11-21
ATE22033T1 (de) 1986-09-15
NL8301694A (nl) 1984-12-03
DE3460674D1 (en) 1986-10-16

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