Colored polymeric molded bodies, and method and device for producing the molded bodies

摘要

A method is provided for producing colored molded bodies based on the following steps: (a) plasticising a polymeric material and blending the material with one or more dyes to form a molding compound by means of a gelation unit equipped with a metering apparatus for dyes; (b) optionally temporarily storing the molding compound obtained in step (a); (c) charging a molding device with the molding compound; and (d) producing the molded body; wherein the ratio of dye to polymeric material is automatically regulated using a colorimeter and an electronic control, and in step (a) color values are measured at the molding compound located in the gelation unit and transmitted as a signal to the electronic control.

主权项

1. A process for the production of one or more moldings, comprising the steps of
(a) plastifying a polymeric material and mixing with one or more dyes to give a molding composition by means of a gelling assembly equipped with a metering device for dyes; (b) optionally storing the molding composition obtained in step (a); (c) supplying the molding composition to a molding device; and (d) producing the molding; where the quantitative ratio of dye to polymeric material is regulated automatically by means of a colorimeter and an electronic control system, wherein step (a) further comprises measuring color coordinates on the molding composition located in the gelling assembly and transmitting these measurements as signal to the electronic control system.