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SE9702865D0 - Method for fixing modification chemicals to solid wood products and for preventing microcracks therein - Google Patents

Method for fixing modification chemicals to solid wood products and for preventing microcracks therein

Info

Publication number
SE9702865D0
SE9702865D0 SE9702865A SE9702865A SE9702865D0 SE 9702865 D0 SE9702865 D0 SE 9702865D0 SE 9702865 A SE9702865 A SE 9702865A SE 9702865 A SE9702865 A SE 9702865A SE 9702865 D0 SE9702865 D0 SE 9702865D0
Authority
SE
Sweden
Prior art keywords
wood products
modification chemicals
chemicals
solid wood
wood
Prior art date
Application number
SE9702865A
Other languages
Swedish (sv)
Other versions
SE9702865L (en
SE509068C2 (en
Inventor
Pertti Vitaniemi
Saila Jaemsae
Pentti Ek
Paavo Kontinen
Original Assignee
Valtion Teknillinen
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 Valtion Teknillinen filed Critical Valtion Teknillinen
Publication of SE9702865D0 publication Critical patent/SE9702865D0/en
Publication of SE9702865L publication Critical patent/SE9702865L/en
Publication of SE509068C2 publication Critical patent/SE509068C2/en

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
    • B27K5/04—Combined bleaching or impregnating and drying of 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
    • B27K3/0292—Processes; Apparatus involving an additional treatment during or after impregnation for improving fixation
    • 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
    • B27K3/346—Grafting onto wood fibres
    • 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
    • B27K3/36—Aliphatic compounds
    • 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
    • B27K3/38—Aromatic compounds
    • 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
    • B27K5/001—Heating
    • 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
    • B27K5/009—Thermal treatments, i.e. involving chemical modification of wood at temperatures well over 100°C using a well-defined temperature schedule

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention concerns a method for binding modification chemicals to massive wood products. According to the invention, the wood products are first treated with the modification chemicals, such as aqueous solutions of maleic acid or maleic anhydride, and then the wood products are redried at a temperature of less than 100 DEG C until their humidity has decreased below 20 %. Finally, the wood products which thus have been treated with modification chemicals and predried are subjected to a heat treatment carried out at a temperature of more than 100 DEG C in order to bind the modification chemicals to the wood. The heat treatment can be carried out in a heat press. The invention makes it possible to avoid internal cracks in wood products which are big enough for practical purposes such as for use in various pieces of furniture.
SE9702865A 1995-02-06 1997-08-06 Process for binding modification chemicals to solid wood products and to prevent cracking in these SE509068C2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI950519A FI96930C (en) 1995-02-06 1995-02-06 Method for fixing modification chemicals and preventing internal cracks in wood pieces
PCT/FI1996/000069 WO1996024472A1 (en) 1995-02-06 1996-02-06 Method for fixing modification chemicals to solid wood products and for preventing microcracks therein

Publications (3)

Publication Number Publication Date
SE9702865D0 true SE9702865D0 (en) 1997-08-06
SE9702865L SE9702865L (en) 1997-10-06
SE509068C2 SE509068C2 (en) 1998-11-30

Family

ID=8542776

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9702865A SE509068C2 (en) 1995-02-06 1997-08-06 Process for binding modification chemicals to solid wood products and to prevent cracking in these

Country Status (4)

Country Link
AU (1) AU4542596A (en)
FI (1) FI96930C (en)
SE (1) SE509068C2 (en)
WO (1) WO1996024472A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3018715A1 (en) * 2014-03-18 2015-09-25 Arc Nucleart PROCESS FOR THE TREATMENT BY DENSIFICATION OF A MATERIAL COMPRISING WOOD BY ESTERIFICATION REACTION BETWEEN SUCCINIC ACID AND GLYCEROL

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63147602A (en) * 1986-12-11 1988-06-20 大倉工業株式会社 Manufacture of improved wood
FI91503C (en) * 1992-01-07 1994-07-11 Valtion Teknillinen A method for softening wood, especially for shaping
EP0622163B1 (en) * 1993-04-21 1996-08-28 Shell Internationale Researchmaatschappij B.V. Process for upgrading low-quality wood

Also Published As

Publication number Publication date
AU4542596A (en) 1996-08-27
SE9702865L (en) 1997-10-06
WO1996024472A1 (en) 1996-08-15
SE509068C2 (en) 1998-11-30
FI96930C (en) 1996-09-25
FI950519A0 (en) 1995-02-06
FI96930B (en) 1996-06-14

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Legal Events

Date Code Title Description
NUG Patent has lapsed