Moulding method, carried out by a mould for a conventional injection press, suitable for cost-effectively realising a piece in one or more injectable materials, and relative mould for such a method
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United States of America Patent
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Issued Date -
Feb 5, 2004
app pub date -
Jul 31, 2003
filing date -
Aug 2, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A moulding method, carried out by a mould for a conventional injection press, suitable for cost-effectively realising a piece in one or more injectable materials, the mould comprising a mobile part and a fixed part, on such mobile and fixed parts being realised respective impressions, which define, when the mobile part is closed against the fixed part, recesses suitable for receiving the injectable materials in at least two successive injection steps; the method comprises a step of housing a sliding element in at least a first recess, a first injection step in such a first recess, after which a first part of the piece remains fixed on a surface integral to such a sliding element, a displacement step of such a first part of the piece in a second recess and then a second injection step in such a second recess.
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