A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PRODUCTION METHOD OF HEAT-TREATED LUMBER
PROBLEM TO BE SOLVED: To provide a production method of a heat-treated lumber which provides efficiently a heat-treated lumber suppressed in secular discoloration due to light, being excellent in dimensional stability and resistant to problems of chips and differences in color tone during shape formation and keeping texture of wood.SOLUTION: A production method of a heat-treated lumber includes: a pressure reduction treatment step of housing a to-be-treated lumber, or natural wood, in a closed space and keeping the internal pressure of the closed space at 50 kPa or lower; a super-heated steam treatment step of introducing super-heated steam into the closed space to house the to-be-treated lumber decreased in oxygen content by the pressure reduction treatment to heat the to-be-treated lumber to a temperature of 170°C or higher; and a discoloration acceleration step of subjecting the to-be-treated lumber after the super-heated steam treatment step to a discoloration acceleration treatment.SELECTED DRAWING: None
【課題】光による経年変色が抑制され、寸法安定性に優れ、形状加工時に欠けや色調の差の問題が生じにくく、木の風合いが維持された熱処理木材が効率よく得られる熱処理木材の製造方法を提供すること。【解決手段】本発明の熱処理木材の製造方法は、密閉空間内に無垢材である被処理木材を収容して、該密閉空間の内圧を５０ｋＰａ以下に維持する減圧処理工程と、該減圧処理工程により酸素含有量が低下した被処理木材を収容する密閉空間に過熱水蒸気を導入して、該被処理木材を１７０℃以上の温度に加熱する過熱水蒸気処理工程と、該過熱水蒸気処理工程後の被処理木材に対して変色促進処理を施す変色促進工程とを含む。【選択図】なし
PRODUCTION METHOD OF HEAT-TREATED LUMBER
PROBLEM TO BE SOLVED: To provide a production method of a heat-treated lumber which provides efficiently a heat-treated lumber suppressed in secular discoloration due to light, being excellent in dimensional stability and resistant to problems of chips and differences in color tone during shape formation and keeping texture of wood.SOLUTION: A production method of a heat-treated lumber includes: a pressure reduction treatment step of housing a to-be-treated lumber, or natural wood, in a closed space and keeping the internal pressure of the closed space at 50 kPa or lower; a super-heated steam treatment step of introducing super-heated steam into the closed space to house the to-be-treated lumber decreased in oxygen content by the pressure reduction treatment to heat the to-be-treated lumber to a temperature of 170°C or higher; and a discoloration acceleration step of subjecting the to-be-treated lumber after the super-heated steam treatment step to a discoloration acceleration treatment.SELECTED DRAWING: None
【課題】光による経年変色が抑制され、寸法安定性に優れ、形状加工時に欠けや色調の差の問題が生じにくく、木の風合いが維持された熱処理木材が効率よく得られる熱処理木材の製造方法を提供すること。【解決手段】本発明の熱処理木材の製造方法は、密閉空間内に無垢材である被処理木材を収容して、該密閉空間の内圧を５０ｋＰａ以下に維持する減圧処理工程と、該減圧処理工程により酸素含有量が低下した被処理木材を収容する密閉空間に過熱水蒸気を導入して、該被処理木材を１７０℃以上の温度に加熱する過熱水蒸気処理工程と、該過熱水蒸気処理工程後の被処理木材に対して変色促進処理を施す変色促進工程とを含む。【選択図】なし
PRODUCTION METHOD OF HEAT-TREATED LUMBER
熱処理木材の製造方法
KADOTA KENICHI (author) / MORIYAMA YUKIKO (author)
2016-03-07
Patent
Electronic Resource
Japanese
IPC:
B27K
Verfahren, Vorrichtungen oder Auswahl von Stoffen zum Imprägnieren, Beizen, Färben oder Bleichen von Holz oder für das Behandeln von Holz mit eindringfähigen Flüssigkeiten, soweit nicht anderweitig vorgesehen
,
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR
/
E04F
FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
,
Ausbau von Bauwerken, z.B. Treppen, Fußböden
HIGH WEATHER RESISTANCE HEAT-TREATED LUMBER AND PRODUCTION METHOD THEREOF
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