Influence of heat-setting process on performance of batt-on-mesh papermaking felts

In order to further optimize the heat-setting process of batt-on-mesh( BOM) papermaking felts,orthogonal test was used to analyze the influence of temperature,time and moisture content on performances of BOM papermaking felt. The compression elasticity,permeability and water resistance of original sample and heat-treated samples were tested. The data were analyzed by fuzzy mathematics method to evaluate the performance of heat-treated samples and determine the optimum process conditions. The results showed that the permeability and water resistance of heat-treated samples were declined. The compression elasticity of the heat-treated samples,however,was improved. The optimum processes suitable for BOM papermaking felt in the experiment were as followed: the temperature was set at 240 ℃,time was set at 60 s and 30 s for positive and negative sides respectively,and moisture content of BOM papermaking felt was set at 30%.