METHOD OF FORMING THERMOFORMABLE COMPOSITE MATERIAL

摘要

METHOD OF FORMING THERMOFORMABLE COMPOSITE MATERIAL In a method of forming a body of thermoformable composite material using two shaping diaphragms against the shaping surface of a tool, the diaphragms are selected to be of different stiffness. Improvements in the control of the uniformity of thickness ant/or buckling can be achieved depending upon which of the diaphragms is stiffer relative to the tool side of the assembly being formed.