Method and device for manufacturing a hollow glass item

摘要

A device for manufacturing a hollow glass item is provided. The device includes a mold having a cavity with a shape substantially corresponding to the outer shape of the glass item and a punch movable between a passive position outside the cavity and an active position inside the cavity, the punch including a hollow body having at least one raised or hollow pattern on at least one outer surface. A method and a punch are also provided.

主权项

1. A method for manufacturing a hollow glass item comprising the steps of:
placing at least one drop of glass in a cavity of a mold; inserting a punch into the cavity of the mold, wherein the punch has a body and an end wall, the body includes a raised and/or hollow pattern with shape that is locally back-draft and has at least one surface in which a normal is oriented in a direction away from the end wall; forming the hollow glass item by using the punch and simultaneously imprinting at least one raised or hollow pattern at a chosen location on an inner surface of at least one wall of the hollow glass item, thereby superimposing the at least one raised or hollow pattern on the shape of the hollow glass item, the raised or hollow pattern being independent of the shape of the hollow glass item; removing the punch from the cavity of the mold, and stripping the hollow glass item, which includes the at least one inner raised or hollow pattern.