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EP0576608B1 - Procede destine a conferer une meilleure qualite a des articles en bois, telle qu'une meilleure preservation du bois, par l'intermediaire de son impregnation - Google Patents

Procede destine a conferer une meilleure qualite a des articles en bois, telle qu'une meilleure preservation du bois, par l'intermediaire de son impregnation Download PDF

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Publication number
EP0576608B1
EP0576608B1 EP92910440A EP92910440A EP0576608B1 EP 0576608 B1 EP0576608 B1 EP 0576608B1 EP 92910440 A EP92910440 A EP 92910440A EP 92910440 A EP92910440 A EP 92910440A EP 0576608 B1 EP0576608 B1 EP 0576608B1
Authority
EP
European Patent Office
Prior art keywords
wood
oil
wooden articles
bath
articles
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 - Lifetime
Application number
EP92910440A
Other languages
German (de)
English (en)
Other versions
EP0576608A1 (fr
Inventor
Ulrich Herbert Schirnig
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0576608A1 publication Critical patent/EP0576608A1/fr
Application granted granted Critical
Publication of EP0576608B1 publication Critical patent/EP0576608B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B27K3/34—Organic impregnating agents
    • B27K3/44—Tar; Mineral oil
    • B27K3/48—Mineral oil
    • 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
    • B27K3/0285—Processes; Apparatus involving an additional treatment during or after impregnation for improving the penetration of the impregnating fluid
    • 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
    • B27K5/0085—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C

Definitions

  • the invention relates to a method of quality improvement of wooden articles such as improved preservation of wood through impregnation thereof, and where the impregnation is carried out by the wooden articles being immersed in a bath of hot linseed oil or similar vegetable oil, heated to at least 110°C, whereby the water present in the wood evaporates and diffuses through the wood and the oil while the hot oil simultaneously penetrates into the pores and cavities of the wood, whereupon the wooden articles are taken out of the bath and the oil oozed in is made to cure and thereby to stiffen the wood.
  • French patent No. 397,786 disloses a method for drying wood and improving the quality of the wood by immersing said wood into hot linseed oil or similar oils.
  • the temperature of the oil must be sufficiently high for the water in the wood to evaporate and the wood to be impregnated with the oil. It is stated that the temperature is conventionally 100-110°C. This method is not quite satisfactory because the wooden articles tend to be distorted at this relatively low impregnation temperature, as is also the case when drying in hot air.
  • the method according to the invention is characterised in that during the immersion of the wooden articles, the linseed oil bath has a temperature in the range of 145°-250°C, preferably near 250°C, and that an insecticide and/or fungicide has been added to the linseed oil.
  • the linseed oil bath has a temperature in the range of 145°-250°C, preferably near 250°C, and that an insecticide and/or fungicide has been added to the linseed oil.
  • the treated wooden articles stand mechanical treatment at higher rates of speed than so far known, as the impregnation oil has a considerable lubricating effect. Furthermore, the surface of the wooden articles better stand painting at a later time. Finally, the method is environmentally more acceptable than the known pressure impregnation where salts are used which may be toxinous.
  • An embodiment of the method according to the invention is characterised in that a drier (siccative) is added to the linseed oil used thereby accelerating the curing of the oil.
  • a second embodiment of the invention according to the invention is characterised in that colour pigments have been added to the linseed oil used.
  • the finished wooden articles get a more attractive appearance, as the colour pigments particularly settle on the surface of the wooden articles.
  • the penetration depends on the type of wood, dimension and original place in the stem.
  • a further embodiment of the method according to the invention is characterised in that the treated articles are of old (previsously used) wood.
  • old apparently worn out wood may find new use, for instance in connection with a restoration, as the wood gets back its old strength, indeed may get stonger than it naturally was.
  • the immersion may be carried out for a relatively short period whereby the penetration of the linseed oil in the wooden material takes place to a rather slight depth. Thereby wooden articles of a rather different quality may be obtained.
  • the wooden articles may be subjected to a controlled drying (curing process) in heat chamber or autoclave after the impregnation with the hot linseed oil. It is thereby further ensured that the end product is not crooked.
  • the linseed bath may have a temperature of 145-250°C, preferably 175-245°C, during the immersion of the wooden articles, which has been found particularly advantageous.
  • the linseed bath may have a temperature of 210-240°C, preferably 225-235°C during the immersion of the wooden articles, which is also very advantageous.
  • the wooden articles may be kept immersed for at least 10 minutes, preferably 15-45 minutes, whereby a suitable oozing in of oil is obtained.
  • the present method is environmentally acceptable because the substances used are degradable and possible residues may be used for other purposes, for instance paint.
  • a number of new window frames (500 by 1000 mm) made of pinewood, which were desired to be improved as regards the wood quality were freed of glass and possible hardware.
  • the frames were then immersed into a large heated vessel containing linseed oil varnish, i.e. pure linseed oil with drier (siccative) added and an insecticide and fungicide.
  • the linseed oil had a temperature of 250°C or slightly below.
  • the frames were kept immersed for 10-20 minutes. They were then taken out of the bath and brought to a drying chamber where the air temperature was about 50°C and the air change was uniformly slow.
  • the drier (siccative) added to the linseed oil comprised 0.07% lead 0.003% manganese and 0.004% calcium.
  • the following naphthanates: 0.3% copper naphthanate and 0.3% zink naphthanate were added as insecticide and fungicide.
  • the finished frames displayed a marked improvement of the strength of the wood and the joints between the frame sections of which the individual frame is constructed, proved to be very compact.
  • the frames displayed no tendency to warp (crookedness) and were entirely without fungus spores. Furthermore, the frames did not provide intimate soil to the fungus spores.
  • a number of wooden articles of pinewood were formed to have dimensions almost corresponding to the dimensions of the worked end products.
  • the degree of humidity of the starting articles was around 20%.
  • the articles were immersed in a bath of 150°C hot linseed oil and were kept under the surface of the oil for 45 minutes. At the end of this period only signs of the oil sizzling around the articles were seen. The water evaporation had ceased before then.
  • the invention may be varied in many ways without thereby deviating from the scope of its idea.
  • the time spent by the articles in the linseed bath may thus be extended to several hours. Possibly, the drying time may be extended to more days.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Catching Or Destruction (AREA)

Claims (9)

  1. Procédé d'amélioration de la qualité d'articles en bois par imprégnation de ces derniers, tel que pour une meilleure conservation du bois, et dans lequel l'imprégnation est effectuée par immersion des articles en bois dans un bain d'huile de lin chaude ou d'une huile végétale analogue chaude, grâce à quoi l'eau présente dans le bois s'évapore et se diffuse à travers le bois et l'huile, tandis que l'huile chaude pénètre simultanément dans les pores et les cavités du bois, à la suite de quoi on sort les articles en bois du bain et on fait durcir l'huile qui s'y est infiltrée pour qu'elle rigidifie ainsi le bois, caractérisé en ce que, durant l'immersion des articles en bois, le bain d'huile de lin est à une température située dans la plage allant de 145° à 250° C, de préférence à une température proche de 250° C, et en ce qu'un insecticide et/ou un fongicide à été ajouté à l'huile de lin.
  2. Procédé selon la revendication 1, caractérisé en ce qu'un agent séchant (siccatif) à été ajouté à l'huile de lin utilisée.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que des pigments de coloration ont été ajoutés à l'huile de lin utilisée.
  4. Procédé selon la revendication 1, 2 ou 3, caractérisé en ce que les articles traités sont en bois âgé (bois usagé).
  5. Procédé selon une ou plusieurs des revendications 1 à 4, caractérisé en ce que l'imprégnation est effectuée pendant une période de temps relativement courte, de manière que la pénétration de l'huile de lin dans le matériau en bois se fasse à une profondeur plutôt faible.
  6. Procédé selon une ou plusieurs des revendications 1 à 5, caractérisé en ce que, après avoir été imprégnés à la température élevée par l'huile de lin, les articles en bois sont soumis à un séchage contrôlé (traitement de durcissement) dans une chambre chauffante ou un autoclave.
  7. Procédé selon une ou plusieurs des revendications 1 à 6, caractérisé par le fait que le bain d'huile de lin a une température de 175 à 245° C, pendant l'immersion des articles en bois.
  8. Procédé selon la revendication 7, caractérisé par le fait que le bain d'huile de lin a une température de 210 à 240° C, de préférence de 225 à 235°C, pendant l'immersion des articles en bois.
  9. Procédé selon une ou plusieurs des revendications 1 à 8, caractérisé en ce que les articles en bois sont maintenus immergés dans le bain d'huile de lin pendant au moins 10 minutes, de préférence 15 à 60 minutes.
EP92910440A 1991-05-07 1992-05-07 Procede destine a conferer une meilleure qualite a des articles en bois, telle qu'une meilleure preservation du bois, par l'intermediaire de son impregnation Expired - Lifetime EP0576608B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK848/91 1991-05-07
DK084891A DK172239B1 (da) 1991-05-07 1991-05-07 Fremgangsmåde til kvalitetsforbedring, såsom forbedret konservering, af træemner ved imprægnering af disse
PCT/DK1992/000148 WO1992019429A1 (fr) 1991-05-07 1992-05-07 Procede destine a conferer une meilleure qualite a des articles en bois, telle qu'une meilleure preservation du bois, par l'intermediaire de son impregnation

Publications (2)

Publication Number Publication Date
EP0576608A1 EP0576608A1 (fr) 1994-01-05
EP0576608B1 true EP0576608B1 (fr) 1995-01-18

Family

ID=8098232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92910440A Expired - Lifetime EP0576608B1 (fr) 1991-05-07 1992-05-07 Procede destine a conferer une meilleure qualite a des articles en bois, telle qu'une meilleure preservation du bois, par l'intermediaire de son impregnation

Country Status (6)

Country Link
EP (1) EP0576608B1 (fr)
AT (1) ATE117238T1 (fr)
AU (1) AU1789092A (fr)
DE (1) DE69201239T2 (fr)
DK (1) DK172239B1 (fr)
WO (1) WO1992019429A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7361215B2 (en) * 2000-12-15 2008-04-22 Koppers Arch Wood Protection (Aust) Pty Limited Material and method for treatment of timber

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK92243C (da) * 1957-07-20 1961-11-20 Herman Wang Apparat til fremstilling af poser, som er forsynet med en eller flere lukkestrimler.
CZ290292B6 (cs) * 1992-09-15 2002-07-17 Ulrich Herbert Schirnig Způsob čiątění dřeva
NZ306373A (en) * 1995-05-08 2000-02-28 Univ Melbourne Process of treating wood with a waterborne preservative such as CCA at an elevated temperature and pressure
DE19715664A1 (de) * 1997-04-16 1998-10-22 Butzbacher Weichenbau Gmbh Verfahren zum Imprägnieren von Festkörpern
DE19852827A1 (de) 1998-11-17 2000-05-18 Menz Martin Holzschutzverfahren
SE516982C2 (sv) * 1999-10-07 2002-04-02 Jaerlaasa Faergindustrier Ab Förfarande för linoljeimpregnering av cellulosabaserade produkter
US6686056B2 (en) 2001-12-04 2004-02-03 Chemical Specialties, Inc. Reactive oil/copper preservative systems for wood products
KR101110669B1 (ko) 2003-04-09 2012-02-17 오스모스 인코포레이티드 미세화된 목재 방부제 제형
EP1651401B1 (fr) 2003-06-17 2009-07-22 PhibroWood LLC Conservateur particulaire du bois et son procede de production
SE528250C2 (sv) * 2004-02-27 2006-10-03 Calignum Technologies Ab Komposition innefattande en initiator och ett förfarande för att behandla trä med kompositionen
US20050252408A1 (en) 2004-05-17 2005-11-17 Richardson H W Particulate wood preservative and method for producing same
EP1799776B1 (fr) 2004-10-14 2013-01-02 Osmose, Inc. Formulations micronisees de conservation de bois dans des supports organiques
CA2674270C (fr) * 2007-01-03 2016-02-09 Universite Du Quebec En Abitibi-Temiscamingue (Uqat) Procede et dispositif de traitement thermique pour produit en bois, et produit en bois

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465760B (sv) * 1985-05-28 1991-10-28 Kemira Kemwood Ab Saett att impregnera och infaerga trae med traekonserveringsmedel och pigment i ett steg

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR397786A (fr) * 1908-03-06 1909-05-17 Cyprien Gillet Aine Procédé de traitement pour sécher et augmenter les qualités du bois
SE465790B (sv) * 1990-03-05 1991-10-28 Electrolux Ab Variabel vaexel foer smaa hoegvarviga motorer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE465760B (sv) * 1985-05-28 1991-10-28 Kemira Kemwood Ab Saett att impregnera och infaerga trae med traekonserveringsmedel och pigment i ett steg

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7361215B2 (en) * 2000-12-15 2008-04-22 Koppers Arch Wood Protection (Aust) Pty Limited Material and method for treatment of timber
US7625577B2 (en) 2000-12-15 2009-12-01 Koppers-Hickson Timber Protection Pty Limited Material and method for treatment of timber

Also Published As

Publication number Publication date
DK84891D0 (da) 1991-05-07
DK84891A (da) 1992-11-08
EP0576608A1 (fr) 1994-01-05
DE69201239D1 (de) 1995-03-02
AU1789092A (en) 1992-12-21
WO1992019429A1 (fr) 1992-11-12
ATE117238T1 (de) 1995-02-15
DE69201239T2 (de) 1995-05-18
DK172239B1 (da) 1998-02-02

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