Method and moulding system for manufacturing a fibre-reinforced polymer object via a feedback system for controlling resin flow rate
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United States of America Patent
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Nov 19, 2019
Grant Date -
Jun 25, 2015
app pub date -
Jul 4, 2013
filing date -
Jul 5, 2012
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Abstract
A method of manufacturing a fibre-reinforced polymer object by means of vacuum-assisted resin transfer moulding (VARTM), wherein fibre material is impregnated with liquid resin in a mould cavity comprising a rigid mould part having a mould surface defining an outer surface of the object, is described. One or more pressure sensors are connected to resin inlets of the VARTM system. A control unit is used for controlling a polymer supply unit based on measured resin pressure and is adapted to adjusting a resin flow rate, if pressure measured by the pressure sensors is below a lower threshold level or above a higher threshold level.
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