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Title:
LUMBER PROCESSING AGENT, PROCESSED LUMBER, AND METHOD OF PROCESSING LUMBER
Document Type and Number:
WIPO Patent Application WO/1992/017325
Kind Code:
A1
Abstract:
A lumber processing agent including: a dimension stabilizing agent to be impregnated into the lumber for controlling expansion and contraction of the lumber, effectively preventing split of the lumber, and stabilizing the dimension thereof as well; a flame-resistant agent including filling and hardening agent constituted of synthetic resin material which hardens after impregnated into the lumber for preventing outflow of said dimension stabilizing agent from the lumber, suppressing contraction of the lumber by exerting such effect as filling up the internal voids of the lumber, and exhibiting anti-corrosive and termite-proof functions, and, preferably, the flame-resistant agent further containing at least one of phosphatic compound and dicyanodiamide; and flame-resistant water-soluble liquid medicine containing urea and formalin. The lumber is impregnated with said processing agent by a specified means and, when required, impregnated further with synthetic resin for surface hardening after dried by appropriate means. A lumber thus processed is free of unnatural color development, innoxious, and retains a woody touch. The lumber is high in resistance to splitting, excellent in appearance, and high in durability. Further, the lumber is high in anti-corrosive and termite-proof properties as well as in resistance to flame.

Inventors:
FUJIKI SATOSHI (JP)
KAMATA HIDEO (JP)
Application Number:
PCT/JP1992/000406
Publication Date:
October 15, 1992
Filing Date:
April 02, 1992
Export Citation:
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Assignee:
AZU KK (JP)
International Classes:
B27K3/50; B27K3/52; B27K5/00; (IPC1-7): B27K3/15; B27K3/52
Foreign References:
JPS4930507A1974-03-19
JPS6351105A1988-03-04
JPH028002A1990-01-11
JPH0245103A1990-02-15
JPH0298403A1990-04-10
Other References:
See also references of EP 0531551A4
Attorney, Agent or Firm:
Kohori, Susumu (Hakata-Shin-Mitsui-Bldg. 1-1, Hakataekimae 1-chome, Hakata-k, Fukuoka-shi Fukuoka 812, JP)
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