Treatment of formaldehyde-containing wood panel products

摘要

A process for treating wood panels is disclosed where the panels are placed in a closed treatment chamber and the chamber then evacuated. This removes free formaldehyde from panel pores and produces a subatmospheric pressure within the pores. The chamber is then pressurized with an ammonia and air mixture with ammonia in the mixture permeating the panel pores and reacting with free formaldehyde. The chamber is then evacuated to recover unreacted ammonia.