Method and device for heat treatment of a disc
AssigneeOTB Group B.V.
InventorsLars Gustaf Magnus Bering, Rolf Tommy Nils Karlsson, Claes Lannart Eriksson, Lars Göran Eriksson, Per Ove Öhman
Life of this patent
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Abstract
Method and device for heat treatment of a disc, whereby the disc (1) is placed on a carrier (14) after which the disc is irradiated. During the radiation the carrier is kept on a desired temperature. The desired temperature of the carrier is about the temperature of the disc prior to placement on the carrier. The disc comprises two disc elements and an adhesive layer between the disc elements, whereby the adhesive layer is cured by the irradiation with ultraviolet light.
Claims4
A method for manufacturing a disc, the method comprising:
- placing two disc elements on top of each other whereby an adhesive layer is provided between the two disc elements to form a disc;
- placing the disc on a carrier wherein the disk is at a temperature;
- irradiating the disc with ultraviolet radiation;
- curing the adhesive layer by the ultraviolet radiation;
- and
- keeping the carrier at a desired temperature during said irradiating by sending a cooling fluid through cooling channels in the carrier, wherein said desired temperature is about the temperature of the disc prior to placing the disc on the carrier.
A method for manufacturing a disc, the method comprising:
- placing two disc elements on top of each other whereby an adhesive layer is provided between the two disc elements to form a disc;
- placing the disc on a carrier;
- irradiating the disc;
- curing the adhesive layer by the ultraviolet radiation;
- and
- keeping the carrier at a desired temperature during said irradiating to control the warp of the disc by sending a cooling fluid through cooling channels in the carrier.
Dependencies are inferred from the claim text.