Apparatus for and method of edge encapsulating a glazing panel

Details Apparatus for and method of edge encapsulating a glazing panel Apparatus for and method of edge encapsulating a glazing panel

B - Operations, Transporting

29

C

B29C 33/08 (2006.01) B29C 70/76 (2006.01) B60J 10/02 (2006.01) H05B 6/62 (2006.01) B29C 35/16 (2006.01)

Patent

CA 2173742

The invention relates to edge encapsulation of a glazing panel (20), e.g. for a vehicle. To allow satisfactory setting of a thin section (23), e.g. a lip, of an encapsulation (22) by radio frequency dielectric heating in a low cost, non-metallic mould operated at low injection pressures, the invention provides a mould (36) comprising a mould body composed of dielectric material shaped to receive the glazing panel (20), the mould body defining an elongate cavity (73) for receiving a liquid encapsulating material which, in use, surrounds an edge portion of the glazing panel (20), charterised in that an electrically polarizable field shaping element (75) is provided within the mould body.

L'invention se rapporte à l'encapsulage des bords d'une vitre (20) destinée, par ex., à un véhicule. Afin de permettre le durcissement satisfaisant d'une section mince (23), telle qu'une lèvre, d'une encapsulation (22) par chauffage diélectrique haute fréquence dans un moule non métallique, bon marché, utilisé à de faibles pressions d'injection, on utilise un moule (36) comprenant un corps constitué d'un matériau diélectrique et configuré de façon à loger la vitre (20), le corps du moule formant une cavité allongée (73) destinée à recevoir un matériau liquide d'encapsulage qui, lors de l'utilisation, entoure une partie marginale de la vitre (20). Ce procédé se caractérise en ce qu'un élément (75) formant un champ électriquement polarisable est placé à l'intérieur du corps du moule.

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