RELEASING OF BONDED SCREENS

摘要

Bonded screens such as vehicle windscreens (1) bonded to a supporting frame (5) by homogeneous bonding material (6) are released by firstly arranging en ergydelivery means (9) adjacent the screen and subsequen tly transmitting energy fromthe delivery means through the screen thereby to effect release of he screen (1) from the frame (5) by either causing degradation of some of the homogeneous bondi ng material and/or cleavage or degradation of the screen material. The energy d elivered may, for example, be ultrasonic or laser radiation, and is preferably arrang ed to be concentrated at a predetermined localised region to enhance the release mech anism.