Method for calibration of a pour opening of a plastic container produced in an extrusion-blow-molding method
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United States of America Patent
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Dec 13, 2016
Grant Date -
Mar 13, 2014
app pub date -
Nov 18, 2013
filing date -
May 16, 2011
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Abstract
A method is disclosed for providing dimensional accuracy of a pour opening in or on a plastic container produced by extrusion-blow-molding. The method can include inserting a section of a plastic hose, extruded in one or more layers through an extrusion nozzle, into a mold cavity of a blow mold tool; and inflating the plastic hose by a calibrating blow pin according to a shape of the mold cavity, whereby at least one pour opening of the plastic container is determined with respect to its inside diameter and its inside contour to form a completed inflated plastic container, and wherein the calibrating blow pin is axially inserted into the plastic hose section after a head plate of the blow mold tool has been closed.
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