Process for preparing uv curable sealing assemblies

Details Process for preparing uv curable sealing assemblies Process for preparing uv curable sealing assemblies

B - Operations, Transporting

29

C

B29C 45/00 (2006.01) B29C 45/14 (2006.01) B29C 70/78 (2006.01) B29C 71/04 (2006.01)

Patent

CA 2528193

Processes for preparation of seals and gaskets using cure-in-place techniques that incorporate a molding step, which is preferably an injection molding step, are provided. The process further comprises the steps of separating mold plates (12, 10, 34, 36, 60, 62, 76, 78) from a support member (22, 30, 48, 68) leaving an UV curable sealing composition adhered thereto and exposing said assembly to UV radiation to cure said UV curable elastomeric sealing composition. The processes are useful for preparing sealing assemblies that comprise compositions that are curable by UV radiation and that are adhered to a support member (22, 30, 48, 68).

Cette invention concerne des procédés de préparation de joints et de garnitures d'étanchéité faisant appel à des techniques de durcissement in situ qui comprennent une étape de moulage, qui est de préférence une étape de moulage par injection. Le procédé comprend en outre les étapes consistant à séparer les plaques de moulage (12, 10, 34, 36, 60, 62, 76, 78) d'un élément de support (22, 30, 48, 68) en laissant une composition d'étanchéité durcissable aux UV collée sur cet élément de support, puis à exposer cet ensemble à un rayonnement UV afin que la composition d'étanchéité élastomère durcissable aux UV durcisse. Ces procédés peuvent être utilisés pour préparer des ensembles d'étanchéité qui comprennent des compositions qui peuvent durcir sous l'effet d'un rayonnement UV et qui sont collées à un élément de support (22, 30, 48, 68).

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