| 摘要 |
<p>The invention relates to a method for the compression moulding of plastic parts (1) comprising a neck (3) which is equipped with an orifice. The inventive method comprises a first step involving the creation of a blank (20) and a second step involving the compression of said blank. The part is moulded with a neck (3) which is equipped with a top wall (4) comprising: a thin area with a notch (5), the contour of said thin area defining the orifice; and two zones which can withstand the mechanical stress (F) necessary in order to break the top wall (4) at the notch (5). One of said two zones (7) is intended to transmit the aforementioned mechanical stress and the other (8) is used as a support. The section of the notch (5) is slightly inclined in relation to the axis of the neck. According to the invention, after moulding, the mechanical stress (F) is applied to one part of the top wall (91), said part being different to the above-mentioned thin area (6), so that the top wall tears at the notch (5), thereby producing the dispensing orifice.</p> |
