Lesson 33　Thermoforming

Thermoformingplasticsheetmaterialinshortthermoformingisoneofthemajorprocessingtechniquesoftheplasticsindustryandalsooneoftheoldest.Sinceearlyattempts,abouttheturnofthecentury,toshapecellulosicsheet,theprocesshasgrownrapidly.Muchofthegrowthisduetoinnovativ ......（本文共 8983 字 , 4 张图）     [阅读本文] >>