PERFORMANCE FEATURES OF MOULD PRESSED AND COATED PARTICLEBOARD (WERSALITE) UNDER HOT STEAM EFFECT

Abstract

In this study, the performance of particleboard - mould pressed and coated with a 17 mm thickness hold under the steamy conditions has been investigated. The experiments have been conducted in 49 _ 2 C and 85 _ 5 % relative humudityWith this purpose, 12 samples have been prepared with respect to TS 3639 standards and exposed to hot steam for 2, 24, 48, 72 and 144 hours. The increments caused by steam in weight, thickness, and width have been observed on these samples. As a result, no statistical difference has been observed in the melamine and PVC covered samples which h ave uncovered sides, but as for as their weight and thickness are concerned in each observation, there are arithmetic differences. So, the samples of werzalit left in steam with uncovered and covered sides have been observed to have a similar amount of increasing valve in their dimension. And it is concluded that the kind of side covering is unimportant. Key Words: Mould pressed and coated particleboard, moist space, steam effect