Method of producing a compression-moulded plastic part comprising a neck which is equipped with a dispensing orifice
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United States of America Patent
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Sep 27, 2011
Grant Date -
Mar 10, 2005
app pub date -
Mar 17, 2003
filing date -
Mar 18, 2002
priority date (Note) -
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Abstract
A method for the compression molding of a plastic part including a neck which is equipped with an orifice, in which a blank is created and compressed. The part is molded with a neck which is equipped with a top wall including a thin area with a notch, the contour of this thin area defining the orifice, and two zones which can withstand the mechanical stress necessary in order to break the top wall at the notch. One of the two zones is intended to transmit the mechanical stress and the other is used as a support. The section of the notch is slightly inclined in relation to the axis of the neck. After molding, mechanical stress is applied to one part of the top wall, other than the thin area, so that the top wall tears at the notch, thereby producing the dispensing orifice.
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