DIE ASSEMBLY AND/OR STAMPER

摘要

Die assembly and stamper possibly in combination. This is used in particular for the manufacture of disc-shaped data carriers. To prevent the end edge of a data carrier manufactured in this way from having a greater thickness than the central part, it is proposed either to make one of the die parts of the die assembly facing the mould cavity thicker or to make the stamper used near the edge boundary which is of annular design thicker. Compensation will then automatically be made for differences in thickness. Injection-moulded parts obtained in this way are particularly suitable for producing optical data carriers made up of two disc parts or disc parts that are provided with a thin spin-coated layer or disc parts to which a thin foil has been bonded.