| 摘要 |
Disclosed is an injection molding method for manufacturing plastic parts from thermoplastically processible plastic molding materials with at least one exposed part ( 1 ) and at least one functional part ( 10 ), whereby the plastic molding material for the exposed part ( 1 ) comprises a transparent or translucent matrix with added effect pigments, and whereby the functional parts ( 10 ) can exhibit different physical and/or chemical plastic properties to the exposed parts ( 1 ). The injection molding method comprises the following steps: a) injection molding and solidification of the plastic molding material of the at least one exposed part ( 1 ) with an exposed surface ( 2 ) and a core surface ( 3 ) facing away from the latter in a first mold ( 20 ) with a first cavity ( 21 ); b) opening of the first mold ( 20 ) along a parting line or plane ( 24 ); c) closing of a second mold ( 25 ) with the at least one exposed part ( 1 ) in a second cavity ( 28 ); d) injection molding and solidification of the plastic molding material of the functional part ( 10 ) on the core surface ( 3 ) of the at least one exposed part ( 1 ); and e) opening of the second mold ( 25 ) and removal of the part. The injection molding method according to the invention is characterized in that for each exposed part ( 1 )-to prevent irregularities such as flow marks and/or knit lines-a single injection nozzle ( 5 ) positioned to optimize the flow or at least two injection nozzles in a cascaded injection molding method are used, and that the plastic molding material for the exposed part ( 1 ) comprises at least one transparent polymer. The corresponding plastic parts manufactured by injection molding exhibit an exposed surface ( 2 ) and a core surface ( 3 ) facing away from the latter with at least one injection point ( 6 ), whereby the functional part ( 10 ) of the plastic part is injection molded onto the core surface ( 3 ) of the previously solidified exposed part ( 1 ).
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