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METHOD FOR INFLUENCING THE ORIENTATION OF FILLERS IN A PLASTICS MELT DURING PRODUCTION OF A MOULDING IN AN INJECTION-MOULDING PROCESS
METHOD FOR INFLUENCING THE ORIENTATION OF FILLERS IN A PLASTICS MELT DURING PRODUCTION OF A MOULDING IN AN INJECTION-MOULDING PROCESS
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机译:在注射成型过程中影响模具熔体在塑料熔体中取向的方法
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摘要
The present invention relates to a method for influencing an orientation of fillers (122) in a plastics melt (112) during production of a moulding in an injection-moulding process. The method comprises the following steps: a) providing a mould (116), which has at least one cavity (114) for receiving a plastics melt (112); b) introducing the plastics melt (112) into the cavity (114) under pressure; c) applying a pressure to the plastics melt (112) in the cavity (114); d) cooling the plastics melt (112) or allowing the plastics melt (112) to cool in the cavity (114) at least partially while maintaining the pressure, whereby the moulding is formed; and e) demoulding the moulding from the cavity (114); according to the invention, during step b) and/or during step c) at least one opening stroke (132) is performed in the form of opening at least a partial region of the cavity (114) in such a way that laminar and/or stretching flows are induced in at least part of the plastics melt (112) that is present in the cavity (114), with the effect of influencing the orientation of the fillers (122) in the plastics melt (112), and the opening stroke (132) is followed by a pressure being applied to the plastics melt (112) as provided in step c).
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