Apparatus for sticking on stamps from an embossing foil

Apparatus for sticking stamps from a foil onto motifs printed at a motif pitch on a substrate said foil facing towards said motifs on said substrate and, having said stamps spaced at a stamp pitch and a backing strip,

• said sticking being caused by pressing means whose work cycle comprises a sticking phase and a forward feed phase,
• said apparatus comprising means for unwinding said foil and backing strip and for winding-on the backing strip and means for supplying and removing the substrate,
• motor driven carriage means, which is displaceable in parallel to a feed direction of said substrate, for cyclically adding speed to said foil moving at a strip speed at the beginning of, and during, said sticking phase and for cyclically subtracting speed from said foil during said forward feed phase,
• and at least one sticking station through which said foil with said backing strip and said substrate are passed in the same feed direction,
• wherein said at least one sticking station comprises a pressing cylinder and a backing cylinder disposed adjacent to said pressing cylinder,
• said pressing cylinder having at least one radially raised smooth pressing portion whose pressing surface is part of a cylindrical surface which is concentric with respect to the pressing cylinder and which is adjacent to the backing cylinder during the sticking phase only,
• and in which, by a displacement of said motor driven carriage means, said foil with the backing strip is accelerated to move at the same uniform forward feed speed of the substrate immediately prior to each sticking phase, and said substrate and said foil on said backing strip are pressed between said pressing surface and said backing cylinder running at a circumference speed equal to the forward feed speed of the substrate,
• and such that after said sticking phase, a gap opens between the pressing cylinder and the backing cylinder so that during said forward feed phase said backing strip is separated from said stamp sticking on said substrate and is decelerated by the displacement of said motor driven carriage means to move independently from the substrate in said gap.