L'air Liquide, Societe Anonyme a Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude

Softal Electronic Erik Blumentfeld Gmbh Co

Géraldine Rames-Langlade

François Coeuret

Panayotis Cocolios

Alain Villermet

Eckhard Prinz

Bernd Martens

Jean-Louis Gelot

Franck Forster

Andrea Spizzica

The invention concerns an installation wherein is performed a crosslinking operation for a coating such as an ink or a varnish through ultraviolet radiation or electronic beam, in the presence of a gas mixture with controlled oxygen residual content. The installation comprises a chamber including one or more UV lamps or a source of accelerated electrons, required for performing the crosslinking operation, and is characterized in that it comprises an input device adjacent the chamber comprising at least the following three components, viewed successively by the product moving to be treated: a labyrinth system, means for injecting an inert gas forming a gas knife and a channel.

Equipment for ultraviolet crosslinking in a controlled atmosphere

Methods for treating polymeric substrates by placing the substrate in a gaseous mixture and subjecting it to a dielectric barrier electrical discharge. The gaseous mixture, which has a pressure around atmospheric, contains a carrier gas, a reducing gas and an oxidizing gas. The amount of the oxidizing gas in the gas mixture is between about 50 ppm and about 2000 ppm by volume, while the amount of the reducing gas in the gas mixture is between about 50 ppm and 30000 ppm by volume.

Method for surface treatment of polymeric substrates

Growing community of inventors

Viroflay, France

Géraldine Rames-Langlade