Three of the flame retardant plate drying process flow

by:GWX     2020-09-27
Flame retardant board in production there are generally two kinds of dry processing methods, namely the dry and wet processing, are generally the product within a certain range, the moisture content of the internal control to satisfy the criteria for processing production, the whole drying process is roughly divided into three steps, the heating period, constant rate drying period, slow drying period, we come to know about the below.

the heating period is mainly to make veneer contact with hot air, realize the product surface water evaporation, constant rate drying period is to make the temperature continues to rise, under the blessing of the temperature, the pressure difference produced inside wooden structure, the surface and internal capillary also implement change, slow drying period, the product has been part of the surface drying to below fibre saturation point, because the internal moisture and surface evaporation speed does not match, so the drying process is gradually into the deep inside. Because of the different species, technology on the control of the difference, but the process is consistent, are the relative humidity of control medium, so it can reduce the situation of be affected with damp be affected with damp, also convenient for the subsequent processing of product.

that is about the drying technology of flame retardant board, need to pay attention to in the process, to prevent drying of the internal stress, and at the same time, according to the characteristics of materials and specifications, the need to adjust process.
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