Abstract: The present invention relates to a laminar structure comprising: a first layer comprising a first plastic film which comprises a thermoplastic and a filler and a second plastic film comprising a thermoplastic and a filler; a second layer comprising a third plastic film which comprises a thermoplastic and a filler and a second plastic film comprising a thermoplastic and a filler; and a laser printed watermark disposed on at least one of the plastic films positioned between the first and second layers.

Abstract: The invention relates to optical security elements, their use for identifying and authenticating objects and processes and devices for identifying and authenticating objects using the optical security elements.

Abstract: A plastic-metal composite material, in particular a transparent plastic-metal composite material, based on a thermoplastic polymer with a wire gauze made from extremely fine wire is described, for use in particular for electromagnetic shielding or for mechanically reinforced windows.

Abstract: A method of making a plastic molding is disclosed. The multi-step method entails applying a metallic layer 20 to 150 nm thick to a translucent plastic film having a thickness of 50 to 750 ?m, removing part of the metallic layer, and applying to the metallized side of the film an adhesive layer 5 to 50 ?m in thickness to obtain a product, and injection molding the product with a translucent thermoplastic. The plastic molding thus made is suitable for the preparation of keys, fittings, trim strips, reflectors, keyboards, casings, shields, advertising panels and packaging items and identification cards.

Abstract: A layered article, the structure of which comprises a layer of a transparent thermoplastic material, a metallic layer having a thickness of 5 to 250 nm, and an electroluminescent layer containing one or more lectroluminescent compounds is disclosed. The article is useful in transmitted light technology.

Abstract: A method of making a plastic molding is disclosed. The multi-step method entails applying a metallic layer 20 to 150 nm thick to a translucent plastic film having a thickness of 50 to 750 &mgr;m, removing part of the metallic layer, and applying to the metallized side of the film an adhesive layer 5 to 50 &mgr;m in thickness to obtain a product, and injection molding the product with a translucent thermoplastic. The plastic molding thus made is suitable for the preparation of keys, fittings, trim strips, reflectors, keyboards, casings, shields, advertising panels and packaging items and identification cards.