MEMBRANE-ASSISTED PREFORMING OF PLASTIC SEMI-FINISHED PRODUCT
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United States of America Patent
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Jan 5, 2017
app pub date -
Dec 22, 2014
filing date -
Dec 24, 2013
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Abstract
Method for preforming a plastic semi-finished product, wherein: at least one anti-adhesive membrane is positioned facing a wall of a preforming mould; the plastic semi-finished product is positioned facing the anti-adhesive membrane so that the anti-adhesive membrane is positioned between the semi-finished product and the wall; pressure is applied to press the semi-finished product against the wall of the preforming mould, in order to give a shape to the semi-finished product; pressure is removed and the preformed part is ejected from the wall; and the preformed part is removed from the mould.
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