Abstract: An injection-molding device includes at least first and second mould parts, defining a mould cavity, wherein at least one of the mould parts includes a heating device, for heating the mould part in the vicinity of a mould cavity surface, the heating device includes an inductive coil having a plurality of windings and being powered by an oscillator. The heating device further comprises a thin top member, which functions as a susceptor for electromagnetic energy emitted by the inductive coil, which is placed in grooves in a carrier member. An intermediate member is placed between the top member and the carrier member. The intermediate member does not function as a susceptor to any grater extent, but provides mechanical stability while allowing the heat generation to be concentrated to the top member.

Abstract: An injection-moulding device is disclosed, comprising at least first and second mould parts, defining a mould cavity, wherein at least one of the mould parts comprises heating means, for heating the mould part in the vicinity of a mould cavity surface, said heating means comprising an inductive coil having a plurality of windings and being powered by an oscillator. The mould part comprises a top member, at the mould cavity surface, and, beneath the top member, a carrier member comprising grooves for taking up said coil windings, wherein the top member resistivity is lower than 1.5*10?6 ?m, the top member relative magnetic permeability is lower than 10, the carrier member resistivity is higher than 20*10?6 ?m, and the carrier member relative magnetic permeability is higher than 50.

Abstract: An injection-molding device includes at least first and second mould parts, defining a mould cavity, wherein at least one of the mould parts includes a heating device, for heating the mould part in the vicinity of a mould cavity surface, the heating device includes an inductive coil having a plurality of windings and being powered by an oscillator. The heating device further comprises a thin top member, which functions as a susceptor for electromagnetic energy emitted by the inductive coil, which is placed in grooves in a carrier member. An intermediate member is placed between the top member and the carrier member. The intermediate member does not function as a susceptor to any grater extent, but provides mechanical stability while allowing the heat generation to be concentrated to the top member.

Abstract: An injection-moulding device is disclosed, comprising at least a first (1) and a second (3) mould part, defining a mould cavity (4). At least one of the mould parts comprises cooling ducts (5), for cooling the mould part in the vicinity of a mould cavity surface (11), and heating means (6), for heating the mould part in the vicinity of the mould cavity surface. The cooling ducts (16) comprise grooves, in a carrier member (17), and the heating means comprises an inductive coil (18) having a plurality of windings, wherein at least a part of the inductive coil is placed in a cooling duct groove.

Abstract: An injection-moulding device is disclosed, comprising at least first and second mould parts, defining a mould cavity, wherein at least one of the mould parts comprises heating means, for heating the mould part in the vicinity of a mould cavity surface, said heating means comprising an inductive coil having a plurality of windings and being powered by an oscillator. The mould part comprises a top member, at the mould cavity surface, and, beneath the top member, a carrier member comprising grooves for taking up said coil windings, wherein the top member resistivity is lower than 1.5*10?6 ?m, the top member relative magnetic permeability is lower than 10, the carrier member resistivity is higher than 20*10?6 ?m, and the carrier member relative magnetic permeability is higher than 50.

Abstract: A compact disc manufacturing machine carrying out a plurality of manufacturing stages including a vacuum stage. A central manipulator has a plurality of radially and outwardly extending manipulator arms which move the discs successively into program-determined working locations necessary for carrying out successively the manufacturing process. The vacuum chamber houses a multi-arm inner manipulator. The disk is moved to and from the vacuum chamber through a vacuum sluice having upper, intermediate and lower parts. The lower part is mounted on an outer end of an arm of the internal manipulator, and the upper part is affixed to an outer end of one of the arms of the central manipulator. When a disk is to be introduced into the vacuum chamber, the arm of the central manipulator delivers the disk into the intermediate part, and the upper part is positioned by the arm over the intermediate part.

Abstract: A compact disc manufacturing machine carrying out a plurality of manufacturing stages including a vacuum stage. A central manipulator has a plurality of radially and outwardly extending manipulator arms which move the discs successively into program-determined working locations necessary for carrying out successively the manufacturing process. The vacuum chamber houses a multi-arm inner manipulator. The disk is moved to and from the vacuum chamber through a vacuum sluice having upper, intermediate and lower parts. The lower part is mounted on an outer end of an arm of the internal manipulator, and the upper part is affixed to an outer end of one of the arms of the central manipulator. When a disk is to be introduced into the vacuum chamber, the arm of the central manipulator delivers the disk into the intermediate part, and the upper part is positioned by the arm over the intermediate part.

Abstract: An apparatus for electroplating, particularly in the production of metal matrices for manufacturing articles of plastic, such as compact discs, said apparatus comprising a container having a peripheral wall and opposed first and second end walls so as to form a plating space therein, adapted to house an electrolyte, and an anode, a carrier with an electrically conductive surface to be plated forming the cathode and means being arranged between the anode and the cathode for providing a flow of electrolyte from said cathode towards said anode. For allowing a faster production of metal matrices with better quality it is suggested according to the invention that the peripheral wall is formed with an internal contour which substantially corresponds to the surface to be plated, said carrier forming the second container end wall which through intermediate current supply members is sealingly urged against the mating edge of the peripheral wall, while the anode is located adjacent said first end wall of the container.

Abstract: An apparatus for electroplating, particularly in the production of metal matrices for manufacturing articles of plastic, such as compact discs, said apparatus comprising a container having a peripheral wall and opposed first and second end walls so as to form a plating space therein, adapted to house an electrolyte, and an anode, a carrier with an electrically conductive surface to be plated forming the cathode and means being arranged between the anode and the cathode for providing a flow of electrolyte from said cathode towards said anode. For allowing a faster production of metal matrices with better quality it is suggested according to the invention that the peripheral wall is formed with an internal contour which substantially corresponds to the surface to be plated, said carrier forming the second container end wall which through intermediate current supply members is sealingly urged against the mating edge of the peripheral wall, while the anode is located adjacent said first end wall of the container.