Device and method for heating a mould or tool
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United States of America Patent
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May 8, 2018
Grant Date -
Dec 18, 2014
app pub date -
Jun 8, 2012
filing date -
Jun 28, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
The present disclosure relates to a tool such as an injection moulding tool or an embossing tool. A heating device including a stack of layers is provided for heating a tool surface. The stack may include a coil carrier layer with a number of wound coils for generating a magnetic field, and a conductive top layer, being adjacent to the tool surface currents are induced in the top layer to heat the surface. Efficient heating may be provided by solutions involving low resistivity layers that lead currents to the top layer without themselves developing heat to any greater extent. A conduction frame device can be provided beneath the top layer and around the perimeter thereof to provide reliable contact with a backing layer.
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