Patent ID: 8650907

Claim:
A continuous method of making reshaped glass-ceramic articles from corresponding flat green glass parts during a ceramicizing process, in which said green glass parts are reshaped during the ceramicizing process, said method comprising the steps of: a) conveying a flat green glass part in a reshaping device into a continuous furnace; b) accelerating the reshaping device with the green glass part in a part of the continuous furnace upstream of a reshaping region to provide sufficient time in order to stop the reshaping device to dock or connect in a sealed manner at least one activating line in at least one activating opening in the reshaping device; c) thermally ceramicizing the green glass part in the reshaping region so that the green glass part has a viscosity that is temporarily lowered due to crystallization heat generated after start of a crystal growth process during the ceramicizing; d) providing reshaping tools in the reshaping device, which are activated by providing a low pressure or overpressure in the reshaping device via the at least one activating line; e) after the start of the thermally ceramicizing of step c and when the viscosity of the green glass part is temporarily lowered due to the crystallization heat generated after the start of the crystal growth process during the ceramicizing, activating the reshaping tools provided in the reshaping device by providing the low pressure or the overpressure in the reshaping device via the at least one activating line in order to perform forced reshaping of the green glass part locally during the ceramicizing and form a local raised portion protruding from a surface of the green glass part; and f) after a stopping stage in which the reshaping device is stopped in order to dock or connect said at least one activating line, synchronizing the reshaping device to a normal furnace conveying speed.