Forming thick, non-developable composite profiles - by placing blank between two sealed deformable bags creating vacuum between them, then applying pressure difference to form assembly to forming tool, without profile deformations

摘要

Method of forming a composite material profile consists of placing a flat blank between two sealed deformable bags between which a vacuum is drawn before applying to that assembly a press. difference that forms the assembly over the forming tool. The pressure difference on the bags exerts a longitudinal tension to the blank due to tensioning devices fitted to the bag ends. USE/ADVANTAGE - Forming of composite material profiles partic. thick profiles or non-developable profiles for many inndustry sectors. The method elliminates large deformations in the profile such as creases or stretches.