| 摘要 |
<p>In a method of forming a contoured panel from a previously manufactured flat composite board, a medium density fiberboard blank having a known caliper and gravity is subjected to steam injection to increase the moisture content of the blank. Increasing the moisture content of the blank softens the blank to prevent cracking in subsequent pressing operations. After the moisture content of the mat is increased in a range of 2.5-10 %, the blank is molded between contoured molding dies with sufficient heat and pressure to form a hardened, contoured panel having a caliper less than the medium density fiberboard blank and having a gravity greater than the medium density fiberboard blank. The contoured panel is suitable for use as a door skin.</p> |
