Process for treatment of wood using a carrier fluid under...

Details Process for treatment of wood using a carrier fluid under... Process for treatment of wood using a carrier fluid under...

2003-05-08

2010-10-05

Barr, Michael (Department: 1711)

Coating processes

Coating by vapor, gas, or smoke

Wood base

C427S440000, C427S297000, C427S430100, C427S393000, C427S397000, C428S537100

Reexamination Certificate

active

07807224

ABSTRACT:
A process for treatment of wood susceptible to damage and having a length that is over the critical length with a fluid under high pressure is disclosed. The process is conducted in a way so that the fluid is not allowed to enter into the liquid form inside the wood. In one embodiment the process is performed in a way so the temperature during the pressurizing is not allowed to exceed the plastification temperature of the wood. In this embodiment the rate of damages of the wood is even further reduced.

REFERENCES:
patent: 4308200 (1981-12-01), Fremont
patent: 5364475 (1994-11-01), Levien et al.
patent: 42 02 320 (1993-08-01), None
patent: 8-276405 (1996-10-01), None
patent: 00 27601 (2000-05-01), None
patent: WO 00/27601 (2000-05-01), None
patent: WO 0027601 (2000-05-01), None
“Development of New Treatment Processes for Wood Protection”, J.J. Morrell and K.L. Levien, Conference report from “Conference on Wood Preservation in the 90's and Beyond”, pp. 135-141, Savannah, GA Sep. 26-28, 1994.
“The Effects of Supercritical CO2on the Bending Properties of Four Refractory Wood Species”, Anderson et al., Forest Products Journal, Nov./Dec. 2000, pp. 85-93.
Kono Toshio; English Translation of JP8-276405A Abstract; Publication Date Oct. 22, 1996.

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