BIAXIAL FORMING PROCESS FOR THICK-WALLED ACRYLIC SHEET

摘要

The present invention relates to a novel biaxial forming process for a preform made of a polymer material which comprises polymethyl methacrylate, to an apparatus for carrying out the process, and also to novel components obtained from a biaxial forming process and their use.

主权项

1. A process for producing a biaxially curved component,
the process comprising: a) producing a preform of thickness from 30 to 400 mm from a polymer material, wherein an area A in a central plane of the preform is equal to an area Av in a central plane of the component with a variance of ±40%, b) introducing the preform into an apparatus so that the preform is freely moveable at edges of the apparatus during the process, and optionally the preform is placed on a female mould, c) heating the preform to a temperature of from 120 to 170° C., and d) using a male mould to carry out the process, thereby obtaining the component.