ES2091087T3 - PROCEDURE TO IMPROVE THE QUALITY OF LOW QUALITY WOOD. - Google Patents

PROCEDURE TO IMPROVE THE QUALITY OF LOW QUALITY WOOD.

Info

Publication number
ES2091087T3
ES2091087T3 ES94201159T ES94201159T ES2091087T3 ES 2091087 T3 ES2091087 T3 ES 2091087T3 ES 94201159 T ES94201159 T ES 94201159T ES 94201159 T ES94201159 T ES 94201159T ES 2091087 T3 ES2091087 T3 ES 2091087T3
Authority
ES
Spain
Prior art keywords
quality
wood
low
procedure
improve
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
ES94201159T
Other languages
Spanish (es)
Inventor
Herman Petrus Ruyter
Peter Arnoldy
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.)
Shell Internationale Research Maatschappij BV
Original Assignee
Shell Internationale Research Maatschappij BV
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 Shell Internationale Research Maatschappij BV filed Critical Shell Internationale Research Maatschappij BV
Application granted granted Critical
Publication of ES2091087T3 publication Critical patent/ES2091087T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • B27K5/001—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
    • B27K5/06—Softening or hardening of wood
    • 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

Landscapes

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

Abstract

A process for upgrading low-quality wood to high-quality wood, comprising: a) a softening stage, wherein one or more sections of of low-quality wood are heated to a temperature in the range of from 160 to 240 DEG C in the presence of an aqueous medium and at a pressure which is at least the equilibrium vapour pressure of said aqueous medium at the operating temperature, thereby at least partially hydrolysing the hemicellulose and disproportionating the lignin present in said wood, b) a dewatering stage, and c) a curing stage, characterised in that the softening stage is conducted in the presence of an aqueous pH buffer, having a pH in the range of from 3.5 to 8.
ES94201159T 1993-04-29 1994-04-27 PROCEDURE TO IMPROVE THE QUALITY OF LOW QUALITY WOOD. Expired - Lifetime ES2091087T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP93201237 1993-04-29

Publications (1)

Publication Number Publication Date
ES2091087T3 true ES2091087T3 (en) 1996-10-16

Family

ID=8213807

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94201159T Expired - Lifetime ES2091087T3 (en) 1993-04-29 1994-04-27 PROCEDURE TO IMPROVE THE QUALITY OF LOW QUALITY WOOD.

Country Status (5)

Country Link
EP (1) EP0623433B1 (en)
AT (1) ATE141851T1 (en)
DE (1) DE69400417T2 (en)
DK (1) DK0623433T3 (en)
ES (1) ES2091087T3 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2751580B1 (en) * 1996-07-26 1998-10-16 N O W New Option Wood WOOD RETIFICATION PROCESS
DE20112599U1 (en) * 2001-08-01 2002-12-19 Kronospan Tech Co Ltd MDF board and manufacture
NL2000405C2 (en) * 2006-12-22 2008-06-24 Willems Holding B V W Method for making wood, wood product and its fixture sustainable.
DE102009047137A1 (en) 2009-11-25 2011-05-26 Institut Für Holztechnologie Dresden Gemeinnützige Gmbh Method for thermal modification or remuneration of wood and wood products in thermal chambers, involves placing wood or wood product between gas tight, temperature and corrosion-resistant and goods heat conducting cover plate
DE102011104025A1 (en) 2010-06-11 2011-12-15 Technische Universität Dresden Method for modification of wood or wood materials, involves subjecting wood of chemical and thermal treatment, where same strength properties in thermal untreated wood are achieved during reduced emission at volatile organic components
WO2012153183A1 (en) * 2011-05-10 2012-11-15 Stora Enso Oyj A process for the treatment of wood comprising impregnating with citric acid followed by curing at high temperature.
CN103753661B (en) * 2014-01-17 2016-06-15 华南农业大学 A kind of preparation method of Eucalyptus finger-joint flooring
CN104960052A (en) * 2015-05-28 2015-10-07 阜南县金威工艺品有限公司 Wicker softening method
DE102015013450A1 (en) 2015-10-16 2016-04-14 Daimler Ag Method for producing a wood trim part
CN105946068A (en) * 2016-05-19 2016-09-21 安徽德润工艺品有限公司 Rattan softening process method
CN106272815A (en) * 2016-08-27 2017-01-04 安徽省阜南志峰工艺品有限公司 A kind of purple willow processing method for weaving kennel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1236255A (en) * 1985-03-15 1988-05-10 Peter Favot Process for densifying low density woods
EP0373725B1 (en) * 1988-12-16 1995-07-05 Shell Internationale Researchmaatschappij B.V. Cellulosic fibrous aggregate and a process for its preparation
ES2073429T3 (en) * 1988-12-16 1995-08-16 Shell Int Research CELLULOSIC FIBROUS ADDED AND A PROCEDURE FOR ITS PREPARATION.

Also Published As

Publication number Publication date
DK0623433T3 (en) 1996-09-16
EP0623433B1 (en) 1996-08-28
EP0623433A1 (en) 1994-11-09
ATE141851T1 (en) 1996-09-15
DE69400417T2 (en) 1997-02-13
DE69400417D1 (en) 1996-10-02

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