Method for production of an optical disc with a detachable module
OwnerLars Lind, Soren Feder +2inventors
InventorsLars Lind, Soren Feder, Hennig Sogaard, Lennart Vendelbjerg
Life of this patent
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Abstract
Method for production of an optical disc with a detachable module, where a standard mould is provided with an insert insertable into said standard mould. The insert restricting the internal dimensions of the mould cavity for shaping the optical disc into dimensions different from a standard optical disc. The insert comprises a line restrictor for providing a groove along at least one breaking line between the optical disc and the detachable module.
Claims29
1-19. (canceled)
An optical disc with a detachable module, said optical disc with detachable module having
- a length of approximately 85.6 mm and a width of approximately 54 mm,
- the SIM plug being placed on a position corresponding to ISO 7810 standard
- a diagonal of the optical disc being at least 80 mm, and
- a skew edge of the SIM plug facing away from the optical disk.
An optical disc with a detachable module, said optical disc with detachable module having
- a length of approximately 85.6 mm and a width of approximately 54 mm,
- the SIM plug being placed on a position differing from ISO 7810 standard
- a diagonal of the optical disc being at least 80 mm, and
- a skew edge of the SIM plug facing towards the optical disk.
An optical disc with a detachable module according to 24, where a frame is provided in connection with the optical disc and the detachable module, where the frame and the optical disc are divided by grooves along breaking lines, and where said grooves along breaking lines are tapered from being less steep to being more steep seen in a direction from the frame towards the optical disc.
Method for production of an optical disc with a detachable module comprising
- providing a mould with mould cavity having internal dimensions corresponding to the dimensions of the optical disc with the detachable module, said mould having supplier means for supplying molten polymer into the mould cavity,
- providing a stamper in the mould cavity, said stamper having a surface towards the interior of the mould cavity, said surface having a surface structure being the counterpart for the corresponding surface structure of the moulded optical disc,
- supplying molten polymer into the mould cavity, said molten polymer filling the remaining space inside the mould cavity, cooling the polymer to a temperature where the polymer is hardened, and removing the moulded optical disc,
- providing at least one line restrictor, for restricting the thickness of the optical disc with detachable module along at least one breaking line between the optical disc and the detachable module, and
- providing the at least one line restrictor in the mould at a position between the optical disc and the detachable module for expanding a longitudinal dimension of the optical disc to a dimension of at least 59,1 mm.
An injection moulding device for manufacturing an optical disc with a detachable module from a polymer material, said injection moulding device comprising
- a mould having a first and second mould section which are movable relative to one another between an open and a closed position, and between which in the closed position a mould cavity is defined into which a molten polymer is injectable to form the disc with detachable module,
- a stamper in the mould cavity having a surface towards the interior of the cavity, said surface having a surface structure being the counterpart for the corresponding surface structure of the moulded optical disc, and
- said injection moulding device also comprising at least one line restrictor, for restricting the thickness of the optical disc with detachable module along at least one breaking line between the optical disc and the detachable module, and
- wherein said line restrictor is provided with a tapering form with a taper angle facing towards the module of less than 15 degrees, preferably less than 12 degrees.
An injection moulding device for manufacturing an optical disc with a detachable module from a polymer material, said injection moulding device comprising
- a mould having a first and second mould section which are movable relative to one another between an open and a closed position, and between which in the closed position a mould cavity is defined into which a molten polymer is injectable to form the disc with detachable module,
- a stamper in the mould cavity having a surface towards the interior of the cavity, said surface having a surface structure being the counterpart for the corresponding surface structure of the moulded optical disc, and
- said injection moulding device also comprising at least one line restrictor, for restricting the thickness of the optical disc with detachable module along at least one breaking line between the optical disc and the detachable module, and
- wherein said line restrictor is provided with a tapering form with a taper angle facing away from the module of more than 8 degrees, preferably more than 10 degrees and most preferably more than 12 degrees.
An insert insertable into a standard mould with cavity for moulding of standard optical discs, said insert inside said standard mould restricting the internal dimensions of the cavity for shaping an optical disc with detachable module differently from a standard optical disc, and said insert being fittingly inserted into the cavity of the standard mould.
Dependencies are inferred from the claim text.