METHOD FOR THE CONTINUOUS PRODUCTION OF CONTINUOUS FILMS, WEBS AND SHEETS WHICH CONSIST OF PLASTICS AND WHICH ARE CAPABLE OF FORMING OPTICAL IMAGES, AND DEVICE FOR CARRYING OUT THIS METHOD

摘要

The invention relates to a method for the continuous production of films, webs and sheets (19) which are capable of producing optical images, consisting of plastics. According to said method, the films/webs/sheets are produced by preparing a plastic melt in an extruder (14) with a slit die or from flat plastic semi-finished products (15) which have been heated to the melting temperature and which are conveyed to a calander, the shaping-engraving roller (11) of said calander being partially surrounded by a steel strip (29). The melt is fed between the shaping-engraving roller (11) and the steel strip (29) in the roller gap (31) and shaped as it cools in the molding space that this forms.