Method for manufacturing a deep-drawn film section made of thermal plastic

摘要

The method involves introducing a film piece resting on a conveying device into a heating zone. A heated film piece is introduced into a deformation zone and subjected with a fluid pressure medium. The heated film piece is isostatically formed to a desired thermoformed part. Film areas of the film piece are strongly heated before deformation. Outer areas are slightly heated before the deformation and during deformation of less or non-stretched usage area, where temperature difference between the usage area and the outer areas amounts to 10 degree Celsius to 50 degree Celsius.