Coating processes – With post-treatment of coating or coating material – Vacuum or reduced pressure utilized
Patent
1977-09-27
1981-12-01
Lusignan, Michael R.
Coating processes
With post-treatment of coating or coating material
Vacuum or reduced pressure utilized
427370, 427397, 427440, B05D 118, B05D 302, B05D 312
Patent
active
043037054
ABSTRACT:
A process for the treatment of wood is disclosed in which water-borne wood treatment materials, such as CCA salts, are forced into the wood under pressure and the water-borne wood treatment materials are held within the wood under pressure until they are deposited as by precipitation or chemical affixation. The precipitation or chemical affixation step is conducted at elevated temperatures. The elevated temperatures may be established by heating the wood treatment materials while they are in contact with the wood, by draining the wood treatment materials from external contact with the wood, while maintaining a sufficient pressure to prevent kickback and heating the wood as by steaming or by submerging the wood in a heated aqueous bath. If a heated aqueous bath is used it may advantageously contain additional wood treatment materials such as wood-softening agents, antichecking agents, filmformers, coloring agents, dimensional stabilizers, flame-retardants, antistatic agents and the like.
In a preferred embodiment, the wood is placed under an initial pressure, lower than the impregnation pressure, so that the kick-back is maximized and the liquid retained within the wood is minimized.
REFERENCES:
patent: 2799597 (1957-07-01), Walker et al.
patent: 2909450 (1959-10-01), Goldstein
patent: 3080212 (1963-03-01), Oberley et al.
patent: 3200003 (1965-08-01), Bescher
patent: 3560251 (1971-02-01), Hager
patent: 3874908 (1975-04-01), Liddell
patent: 3968276 (1976-07-01), Allen
patent: 4062991 (1977-12-01), Kyte et al.
LandOfFree
Treatment of wood with water-borne preservatives does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Treatment of wood with water-borne preservatives, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Treatment of wood with water-borne preservatives will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1297296