Using transfer moulding processes, the corners are molded and the profile ends are joined to create a full gasket frame. This procedure involves extruding the desired profile, curing it, and then using a cutting gauge to trim the corners before molding.
The profile geometry is adjusted to the needs of the moulded corner/end during the transfer molding process. In order to obtain the shape of the mould and cross-link the profile edges to the moulded jointed area, rubber compound is injected under pressure into the mould cavity and allowed to vulcanize. As a result, a continuous and uniform gasket frame is created.
For rubber gaskets, molding is the only way to get complete frame. For gaskets with corners that will be pulled or stretched, this bonding technique is also advised. Rubber molding creates stronger joints for greater leak resistance compared to corners that are hot spliced. Also advised for bulbs with challenging shapes is molding.
Vulcanised frames can be used in windows and aluminium facade systems.
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