Gas pressure and temperature in the mat during flakeboard manufacture

Local internal-mat conditions of temperature, moisture content, gas pressure, and stress history interact to affect adhesive cure, wood densification, and the subsequent panel properties. Data is presented to illustrate the effects of press temperature and initial moisture content on measured gas pressure at the face and core layers of a flakeboard mat. Face and core gas pressures increase at different rates, but quickly equalize early in the press cycle. The internal temperature and gas pressure are in part related to the saturated water vapor pressure.

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