The device for partially embossing deep-drawn or planar seal blanks that are punched out from a foil strip comprises an embossing die and an adjacent punch. The embossing die in turn comprises a female mould and a male mould, the male mould comprising three-dimensional elements that are arranged in an outer region and in a central region and the male mould and the female mould, in their spatial position, being mounted so as to be rotatable about an axis A that is substantially perpendicular to the foil strip.

A machine for shaping an initially tubular cylindrical preform to form a non-round shape in registration with printed or similarly applied surface decoration or the like on the preform, comprises: a conveyor for carrying a series of the preforms; a tool table having a plurality of tool stations between which the preforms are conveyed by indexed motion of the conveyor, the tool table being reciprocable along an axis towards and away from the conveyor, to bring forming tools at the tool stations into and out of operative engagement with the preforms; a registered shaping tool at at least one of the tool stations operatively arranged to deform the preforms to an out-of-round shape; at least one sensor operatively arranged to determine the angular orientation of each preform in a plane normal to the reciprocation axis; at least one reorientation actuator operatively arranged to cause relative rotation between each preform and the registered shaping tool, whereby the registered shaping tool and the preforms are brought into a predetermined relative angular orientation about an axis of the preform at the registered shaping tool station; the relative rotation with respect to a given preform taking place during a plurality of reciprocations of the tool table and/or indexing movements of the conveyor. Improved embossing/debossing tools are also disclosed.

A machine for shaping an initially tubular cylindrical preform to form a non-round shape in registration with printed or similarly applied surface decoration or the like on the preform, comprises: a conveyor for carrying a series of the preforms; a tool table having a plurality of tool stations between which the preforms are conveyed by indexed motion of the conveyor, the tool table being reciprocable along an axis towards and away from the conveyor, to bring forming tools at the tool stations into and out of operative engagement with the preforms; a registered shaping tool at at least one of the tool stations operatively arranged to deform the preforms to an out-of-round shape; at least one sensor operatively arranged to determine the angular orientation of each preform in a plane normal to the reciprocation axis; at least one reorientation actuator operatively arranged to cause relative rotation between each preform and the registered shaping tool, whereby the registered shaping tool and the preforms are brought into a predetermined relative angular orientation about an axis of the preform at the registered shaping tool station; the relative rotation with respect to a given preform taking place during a plurality of reciprocations of the tool table and/or indexing movements of the conveyor. Improved embossing/debossing tools are also disclosed.

A machine for shaping an initially tubular cylindrical preform 1 to form a non-round shape in registration with printed or similarly applied surface decoration or the like on the preform, comprises: a conveyor (3, FIG. 3) for carrying a series of the preforms; a tool table 6 having a plurality of tool stations 7, 9 between which the preforms are conveyed by indexed motion of the conveyor, the tool table being reciprocable along an axis towards and away from the conveyor, to bring forming tools 11 at the tool stations into and out of operative engagement with the preforms; a registered shaping tool 11 at at least one of the tool stations operatively arranged to deform the preforms to an out-of-round shape; at least one sensor 118, 124, (128, 126, 130, 132) operatively arranged to determine the angular orientation of each preform in a plane normal to the reciprocation axis; at least one reorientation actuator (A1, A2, B1, B2, C, D, E), F1, F2, G operatively arranged to cause relative rotation between each preform and the registered shaping tool, whereby the registered shaping tool and the preforms are brought into a predetermined relative angular orientation about an axis of the preform at the registered shaping tool station; the relative rotation with respect to a given preform taking place during a plurality of reciprocations of the tool table and/or indexing movements of the conveyor. Improved embossing/debossing tools are also disclosed (FIGS. 8a-23).

The object of the invention is an elastomeric composition for the manufacture of heat transfer embossing dies, comprising a polymer matrix in the form of an organosilicon rubber, a thermally conductive filler, an inorganic reinforcing filler, an organic reinforcing filler, and a crosslinking agent, characterized in that it comprises an organosilicon rubber; a thermally conductive substance in the form of metallic particles in an amount of 75-200 parts by weight per 100 parts by weight of rubber, an organic reinforcing filler in the form of two species of carbon black particles in an amount of 10-100 parts by weight, whereby the ratio by weight of the first carbon black species to the second carbon black species is 2:3 by weight, and in addition are carbon black particles with an iodine number of 50 to 150 g/kg and technical carbon black particles with an iodine number of 10 to 49 g/kg; an inorganic reinforcing filler in the amount of 5-100 parts by weight per 100 parts by weight of rubber; and a crosslinking agent in the amount of 0.1-5 parts by weight per 100 parts by weight of rubber.