EP1806213A1 - Procédé d'imprégnation de copeaux de bois - Google Patents

Procédé d'imprégnation de copeaux de bois Download PDF

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Publication number
EP1806213A1
EP1806213A1 EP05405724A EP05405724A EP1806213A1 EP 1806213 A1 EP1806213 A1 EP 1806213A1 EP 05405724 A EP05405724 A EP 05405724A EP 05405724 A EP05405724 A EP 05405724A EP 1806213 A1 EP1806213 A1 EP 1806213A1
Authority
EP
European Patent Office
Prior art keywords
wood chips
wood
impregnating
impregnating agents
water
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
EP05405724A
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German (de)
English (en)
Other versions
EP1806213B1 (fr
Inventor
Jakob Friederich Werz
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 PL05405724T priority Critical patent/PL1806213T3/pl
Priority to AT05405724T priority patent/ATE393689T1/de
Priority to DE502005003920T priority patent/DE502005003920D1/de
Priority to EP05405724A priority patent/EP1806213B1/fr
Priority to US11/646,189 priority patent/US20070169901A1/en
Publication of EP1806213A1 publication Critical patent/EP1806213A1/fr
Application granted granted Critical
Publication of EP1806213B1 publication Critical patent/EP1806213B1/fr
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • 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
    • B27K1/00—Damping 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
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/06—Controlling, e.g. regulating, parameters of gas supply
    • F26B21/10—Temperature; Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B7/00—Drying solid materials or objects by processes using a combination of processes not covered by a single one of groups F26B3/00 and F26B5/00
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2210/00—Drying processes and machines for solid objects characterised by the specific requirements of the drying good
    • F26B2210/16—Wood, e.g. lumber, timber

Definitions

  • the invention relates to a process for the impregnation of wood chips with dissolved and / or emulsified substances in water as impregnating agent for improving the elastic, mechanical, chemical and / or biological properties by vacuum impregnation and drying with dry steam.
  • Wood chips are used as fillers for a whole range of wood-plastic composites.
  • plastic matrix both thermosets and thermoplastics can be used.
  • the wood particles from sawing, planing or so-called cutting chips are brought by regrinding to the desired size and shape.
  • the thickness of the wood particles is usually in the range of 0.2 - 0.5 mm, the ratio of width to length (slenderness) between 1: 3 and 1:10.
  • the chip material After drying and fractionation, the chip material is present in the desired shape and size.
  • the wood particles in suitable mixers, such as. B. in high-speed rotary mixers, kneading machines, heating-cooling mixers or Mischextrudem, homogeneously mixed with the plastic matrix.
  • the mixture thus produced can be pressed or injected into molds for the production of the actual composite material.
  • the extrusion to bars, profiles and similar semi-finished products is possible.
  • the performance characteristics, the mechanical or elastic Properties and the surface quality can be selectively changed or influenced.
  • further additives such as.
  • color pigments or lubricants or by the combination of different plastics, an attractive surface, grip friendliness and the like optical and haptic properties can be achieved.
  • the disclosed process for impregnating wood is prepared from an impregnating agent containing impregnating oil and water-soluble polymers as a thickener, a dispersion.
  • the dispersion is heated to a temperature between 100 and 130 ° C and introduced into a impregnation vessel with the wood to be impregnated.
  • the impregnating agent is introduced into the wood by means of one or more pressure cycles.
  • the EP-A-1 004 413 describes a process for producing impregnated wood chips for use as insulating or insulating material.
  • the chips are dried at a temperature of 150 ° C to the fire limit of the chip material and then sprayed with an impregnating agent. In this case, a pressure of up to 20 bar act on the chips.
  • the invention has for its object to provide a method of the type mentioned, with which the adverse properties of the filler wood, such as swelling, water absorption, susceptibility to rot by wood-destroying organisms or flammability can be reduced.
  • the wood chips are mixed with the substances dissolved and / or emulsified in water and the mixture is subsequently evacuated to a pressure ⁇ 0.1 MPa and after a period of action of at least 20 seconds with dry steam of 1.5 to 6 bar Overpressure is applied.
  • it is evacuated to a pressure of 0.05 to 0.075 MPa.
  • the exposure time is preferably 30 to 300 seconds.
  • the dry steam preferably has 2 to 4 bar, in particular about 3 bar overpressure.
  • Preferred impregnating agents are emulsions of natural and / or synthetic waxes or resins or solutions of minerals or salts, such.
  • boric acid or borax (sodium borate) containing solutions such as sodium borate
  • the impregnating agents may also contain prepolymers which polymerize only in a further processing step.
  • the inventive method is particularly suitable for impregnating wood chips with a preferred thickness of 0.2 to 0.5 mm and a preferred ratio of width to length of 1: 3 to 1: 10.
  • a particularly preferred field of application of wood chips impregnated with the method according to the invention is their use as filler for wood-plastic composite materials.
  • Wood chips in the form of so-called fine chips having an average length of less than 0.5 mm were introduced into an autoclave together with an aqueous paraffin emulsion.
  • the wood chips and the paraffin emulsion were mixed by intensive stirring.
  • the container was evacuated to a pressure of 0.07 MPa.
  • the container was charged with dry steam of 3 bar.
  • the spangle was dried while stirring and the paraffin was fixed on the chips.
  • the water absorption capacity of the wood chips could be reduced by 60%.
  • Gate sawdust was introduced into the autoclave together with an aqueous boric acid solution and treated in the same manner as in Example 1.
  • the chips thus treated were inoculated on a substrate with spores of wood-destroying fungi and stored in the damp-warm climate. Through this treatment, the wood chips were protected from fungal attack.
  • the inventive method can be compared to the conventional production of wood chips achieve numerous advantages.
  • any presence of moisture in the wood chips and / or aggregates is troublesome.
  • An addition of aggregates as a solution together with a glue - as is customary in water-soluble thermosetting synthetic resins - is therefore not possible.
  • An admixture as a powder or in other solid form is usually not possible or only to a limited extent because of the different specific weights of the components.
  • segregation then threatens during further processing.
  • An impregnation of the wood before cutting would be very expensive and the loading of the wood substance not sufficiently uniform with the additive or additives, the impregnation at ambient pressure by means of water-dissolved substances and subsequent drying by contact heat and / or convection conceivable in principle, but technologically and technically complex and expensive.
  • the impregnation of the wood chips is carried out with the method according to the invention and, depending on the quality requirement, further substances are added to improve various properties of the wood chips. Furthermore, to improve the properties of the wood chips according to the invention can be provided to mix the wood chips binders and / or emulsions of natural and / or synthetic waxes or resins and / or solutions of minerals or salts and / or prepolymers and / or fungicides.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
EP05405724A 2005-12-27 2005-12-27 Procédé d'imprégnation de copeaux de bois Active EP1806213B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL05405724T PL1806213T3 (pl) 2005-12-27 2005-12-27 Sposób impregnowania wiórów drewnianych
AT05405724T ATE393689T1 (de) 2005-12-27 2005-12-27 Verfahren zur imprägnierung von holzspänen
DE502005003920T DE502005003920D1 (de) 2005-12-27 2005-12-27 Verfahren zur Imprägnierung von Holzspänen
EP05405724A EP1806213B1 (fr) 2005-12-27 2005-12-27 Procédé d'imprégnation de copeaux de bois
US11/646,189 US20070169901A1 (en) 2005-12-27 2006-12-27 Process for impregnating woodchips

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05405724A EP1806213B1 (fr) 2005-12-27 2005-12-27 Procédé d'imprégnation de copeaux de bois

Publications (2)

Publication Number Publication Date
EP1806213A1 true EP1806213A1 (fr) 2007-07-11
EP1806213B1 EP1806213B1 (fr) 2008-04-30

Family

ID=36390258

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05405724A Active EP1806213B1 (fr) 2005-12-27 2005-12-27 Procédé d'imprégnation de copeaux de bois

Country Status (5)

Country Link
US (1) US20070169901A1 (fr)
EP (1) EP1806213B1 (fr)
AT (1) ATE393689T1 (fr)
DE (1) DE502005003920D1 (fr)
PL (1) PL1806213T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103786200A (zh) * 2014-01-16 2014-05-14 中国科学院高能物理研究所 一种利用电子加速器辐照及加压技术改性木材的方法
EP2786662A1 (fr) * 2013-04-03 2014-10-08 RUDOLF WILD GmbH & CO. KG Procédé de stockage de substances dans des matières solides organiques

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI127330B (fi) 2009-01-30 2018-03-29 Upm Kymmene Corp Menetelmä kytkentäaineen lisäämiseksi raaka-aineen joukkoon

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227652A1 (de) * 1972-06-07 1973-12-20 Keller & Co Ag Klingnau Verfahren zum impraegnieren von koerpern aus einem material mit einer zellularen struktur
DE19521623A1 (de) 1995-06-14 1996-03-07 Edwin Schmidt Verfahren zum Imprägnieren von Holz mit Saccharose-Lösung und/oder der Lösung sonstiger Substanzen und Vorrichtungen zum Anwenden des Verfahrens
EP1004413A1 (fr) 1998-11-19 2000-05-31 Hubert Fritz Procédé et installation pour la production de copeaux de bois imprégnés
WO2003000475A1 (fr) * 2001-05-09 2003-01-03 Fletcher Building Products Limited Production d'un materiau composite a haute performance
EP1216801B1 (fr) 2000-12-21 2005-06-08 Dipl.-Ing. Marmetschke Michael Procédé d'imprégnation du bois

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5955023A (en) * 1996-11-27 1999-09-21 Callutech, Llc Method of forming composite particle products

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2227652A1 (de) * 1972-06-07 1973-12-20 Keller & Co Ag Klingnau Verfahren zum impraegnieren von koerpern aus einem material mit einer zellularen struktur
DE19521623A1 (de) 1995-06-14 1996-03-07 Edwin Schmidt Verfahren zum Imprägnieren von Holz mit Saccharose-Lösung und/oder der Lösung sonstiger Substanzen und Vorrichtungen zum Anwenden des Verfahrens
EP1004413A1 (fr) 1998-11-19 2000-05-31 Hubert Fritz Procédé et installation pour la production de copeaux de bois imprégnés
EP1216801B1 (fr) 2000-12-21 2005-06-08 Dipl.-Ing. Marmetschke Michael Procédé d'imprégnation du bois
WO2003000475A1 (fr) * 2001-05-09 2003-01-03 Fletcher Building Products Limited Production d'un materiau composite a haute performance

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Week 197625, Derwent World Patents Index; AN 1976-F6655X, XP002382841, "Impregnation of wood with antiseptics - provision for attaining given impregnation quality and avoiding distortion in drying" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2786662A1 (fr) * 2013-04-03 2014-10-08 RUDOLF WILD GmbH & CO. KG Procédé de stockage de substances dans des matières solides organiques
WO2014161648A1 (fr) * 2013-04-03 2014-10-09 Rudolf Wild Gmbh & Co. Kg Procédé d'inclusion de substances dans des solides organiques
CN103786200A (zh) * 2014-01-16 2014-05-14 中国科学院高能物理研究所 一种利用电子加速器辐照及加压技术改性木材的方法

Also Published As

Publication number Publication date
PL1806213T3 (pl) 2008-09-30
ATE393689T1 (de) 2008-05-15
US20070169901A1 (en) 2007-07-26
DE502005003920D1 (de) 2008-06-12
EP1806213B1 (fr) 2008-04-30

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