METHOD OF AND APPARATUS FOR INJECTING TREATING LIQUID INTO WOOD MATERIAL AND POROUS INORGANIC MATERIAL, AND METHOD FOR DESTROYING RAY PARENCHYMA CELL WALLS AND ASPIRATED PIT PAIR

摘要

A method for injecting a treating liquid into a woodor stone material. The liquid is injected in an initialpressure-applying/injecting step in which the wood or stonematerial is immersed at ambient temperature in a treatingliquid under an initial liquid pressure of 1 to 10 kg/cm2, andmaintained at this pressure for a period of time.Subsequently, the pressure is increased to a final pressurehaving a maximum value of 50 kg/cm2. Where wood is beingtreated, the pressure is raised in a plurality of steps of 5to 10 kg/cm2 each, followed by a defined holding period. Wherestone is being treated, the pressure is increased in a singlestep. Finally, the treated material is depressurized over aperiod of at least 20 minutes.