Overmoulding used for plastic heat exchangers

The Calorplast UK distributor/manufacturing agent, Chemical Process Solutions, explains the benefits of their overmoulding technique, used to manufacture thermoplastic heat exchangers

The Calorplast UK distributor/manufacturing agent, Chemical Process Solutions, explains the benefits of their overmoulding technique, used to manufacture thermoplastic heat exchangers.

Typical processes used to mould the tubes into the plates are very unlikely to produce consistent quality joints.

Calorplast use a process that achieves 100% sealing of the tubes to the plate, utilising melting, under precisely controlled reproducible conditions.

Overmoulding is an injection moulding process where the tubes are inserted into a pre-heated mould, and then the melted polymer is injected over the melted tube ends, to form either a stable collector or a connector element.

With this method the raw material will melt completely under high temperature and pressure, joining together with the rest melt of the other material.

The solidified material has a completely homogeneous structure.

The Calorplast range includes immersion, shell and tube, tube-plate, flexible and gas-water heat exchangers in PVDF, PP, PE, and PFA (Teflon).

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