Releasing of bonded screens

Details Releasing of bonded screens Releasing of bonded screens

B - Operations, Transporting

29

C

B29C 65/76 (2006.01) B23K 26/40 (2006.01) B26F 3/00 (2006.01) B60J 10/00 (2006.01) B60J 10/02 (2006.01) B62D 65/00 (2006.01) B29C 35/08 (2006.01)

Patent

CA 2181541

Bonded screens such as vehicle windscreens (1) bonded to a supporting frame (5) by homogeneous bonding material (6) are released by firstly arranging energydelivery means (9) adjacent the screen and subsequently 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 bonding material and/or cleavage or degradation of the screen material. The energy delivered may, for example, be ultrasonic or laser radiation, and is preferably arranged to be concentrated at a predetermined localised region to enhance the release mechanism.

On procède au démontage de vitres collées telles que des pare-brise (1) de véhicules collés sur des structures porteuses (5) à l'aide d'adhésifs homogènes (6) en plaçant un moyen (9) de diffusion d'énergie contre le pare-brise puis en émettant de l'énergie à partir dudit moyen, ce qui permet de dégager le pare-brise (1) de sa structure porteuse (5) du fait des dommages causés à une partie de l'adhésif ou des dommages causés au matériau du pare-briseet de sa fissuration subséquente. L'énergie émise peut consister en un rayonnement ultrasonore ou laser et elle est de préférence concentrée en certains points pour favoriser le démontage.

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