Method and device for manufacturing a plastic record carrier
AssigneeU.S. Philips Corporation
InventorsEgbert Broeksema, Arnoldus A. Smeets
Life of this patent
Estimating the term…
Loading patent…
AssigneeU.S. Philips Corporation
InventorsEgbert Broeksema, Arnoldus A. Smeets
Estimating the term…
A method and device for manufacturing a record carrier is disclosed in which a liquid moulding resin is deposited in a cavity formed in the surface of a mould which also has at least one data track. Thereafter a flexible substrate, having a central projection, is deformed into a convex shape and is pressed against the moulding resin. As the projection on the substrate enters the mating cavity in the mold, the resin is squeezed out of the cavity and rolled out across the mould surface by the substrate which is flattened into a planar form during the pressing step. The moulding resin is then cured and the assembly of the substrate with attached, cured resin layer is removed from the mould.
An apparatus for manufacturing a record carrier having a stratified structure and at least one data track, said apparatus comprising a mold having a surface with a pattern formed therein corresponding to the data track to be provided on the record carrier, means for supporting a planar, flexible substrate opposite said mold for movement towards and away from said surface, said mold having a cavity formed in the center of said surface for receiving a curable, fluid resin, said cavity being configured to mate with a central projection on the substrate so that upon movement of the substrate towards said mold, the projection enters said cavity and squeezes the resin in the cavity onto said surface, means for deforming said substrate into a convex form bulging toward said mold and for changing the configuration of said substrate from said convex to a planar form when said substrate contacts the resin on said surface as said substrate is moved towards said mold by said supporting means to thereby roll out the resin over said surface and means for covering the periphery of said substrate during curing of the resin.
Dependencies are inferred from the claim text.