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US 4,409,063 AGranted
Apparatus and process for hot-stamping containers
AssigneeRheological Systems, Inc.
InventorRobert Brown
Life of this patent
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AssigneeRheological Systems, Inc.
InventorRobert Brown
Estimating the term…
Apparatus and process for hot-stamping molded plastic containers in which the container is moved past a heated die having a platen with a printing die, the die being universally movable so that linear uniform pressure is exerted between a confronting container surface and die surface. As the container moves across the die surface, it is rotated so that foil which is pinched between the container and die is transferred onto the surface of the rotatable container. The uniform linear pressure between container and die, transfers foil to the accompaniment of rotation of the container so that defect-free lamination of foil is transferred onto the container surface to form decorative or alpha numeric information. The operation is continuous, with successively spaced containers moving into printing position relatively to the die, where the hot-stamping operation is repeated. Containers are automatically removed after printing, and successive containers supplied either manually or automatically.
An apparatus for imparting hot die transfer of metal or pigmented metal material from a carrier onto circular plastic containers comprising a stationary die having mounting means providing substantially free universal die movement, spaced mounting means having means providing individual container rotation and for receiving containers thereon intended for die transfer, means for biasing the container against the die to effect linear engagement therebetween, and advancing the container across the face of the die to effect simultaneous rotation of the container and successive transfer of foil received on a flexible tape pressed between confronting surfaces of the die and container respectively and under a control force matrix while the combination of pressure and temperature effects a viscoelastic condition of the surface of the container prior to the transfer of foil.
Dependencies are inferred from the claim text.