Melzer Maschinenbau Gmbh

Bernhard Baist

Alexander Melzer

In the optical examination of plastic cards, the latter are illuminated with focused light, which is mixed with a diffuse component, in order reliably to discriminate even relatively slight differences in the reflectivity of the surface sections.

System for optically examining plastic card surfaces

A laminating apparatus is disclosed which is particularly suited to mount holograms on plastic cards. The apparatus comprises a planar support supporting the work pieces to be laminated. A press stamp has a shape of a sector of a circular cylinder wall and is driven by means of a special gear to perform a hobbing motion along the to-be-laminated area.

Growing community of inventors

Wuppertal, Germany

Bernhard Baist