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AssigneeMatsushita Electric Works, Ltd.
InventorsShozo Hirao, Ayumu Yasuda, Yoshihiro Ohta, Takashi Nakai, Kazuo Seto
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A method of manufacturing a modified wood material, wherein a raw wood material is processed in a first bath of a first solution containing metallic ions high in the affinity and showing insoluble and non-flammable properties within the wood material, and then in a second bath of a second solution containing negative ions which produces an insoluble, non-flammable inorganic composition upon reaction with the metallic ions, whereby the obtained modified wood material is made to have the insoluble, non-flammable inorganic composition produced and fixed therein to allow the material to hold a good flame retardancy and excellent rotproof and mothproof properties.
A method for manufacturing a modified wood material made to contain therein an insoluble, non-flammable inorganic compound, the method comprising a step of immersing a raw wood material in a first bath of a first water-soluble inorganic substance solution containing an effective amount of metallic ions other than copper or sodium high in affinity for said wood material so as to fix said metallic ions in said wood material, wherein said metallic ions are insoluble and non-flammable in said wood material, and a step of immersing said wood material in a second bath of a second water-soluble inorganic substance solution containing an effective amount of negative ions other than chromate for producing said insoluble, non-flammable inorganic compound upon reaction of said negative ions with said metallic ions, said wood material being immersed in said first and second baths for a time sufficient to effective fix throughout said wood material and insoluble, non-flammable inorganic compound.
Dependencies are inferred from the claim text.