应用响应面优化法的文胸泡沫模杯模压厚度变化趋势研究

为减少文胸泡沫模杯模压技术中试错法的次数并建立定量分析方法，采用3因素3水平响应面优化（Box-Behnken）方法，设计出15种实验组合，通过回归方程和响应曲面探索模压工艺之间的关系并进行预测，同时评估交互作用。结果表明：对于模杯厚度，模压温度较模压时间有显著影响，从响应曲面看出模压温度不够即使再增加模压时间，模杯的厚度也不能保持稳定；对于不同杯深的模压头，在指定模压后模杯厚度的情况下，该方法可快速准确地确定出合适的模压温度、模压时间，效率是没有采用试验设计的3.6倍；通过试验验证了回归模型的有效性。

Thickness change trend under process parameters in foam cup molding using Box-Behnken design method

In order to reduce the number of trial-and-error in the conventional bra cup molding process and to establish a quantitative analysis method, an experimental scheme with 15 kinds of condition combinations ( three factors and three levels ) based on the Box-Behnken design ( BBD ) method was proposed. By means of the regression equation and the response surface plots, the relationship between molding process parameters and the section thicknesses of molded cups could be explored and the prediction could be made. The results indicate that the molding temperature has greater influence than the length of the dwell time on the section thicknesses of molded cups. From the response surfaces, even though the length of the dwell time is extended, the thickness of the mold cup cannot remain stable if the molding temperature is not high enough. For the given cup depths of different sized mold heads, the optimal molding conditions can be accurately and quickly determined. The efficiency with this approach is 3. 6 times of the approach without experimental design and the results are validated by the experiment.