PROCEDE POUR REALISER UN DECOR SUR UN REVETEMENT DE POLYTETRAFLUORETHYLENE ET USTENSILE CULINAIRE S'Y RAPPORTANT

• Main Author: CLAUDINE GARDAZ ET JEAN-PIERRE BUFFARD
• Format: Patent
• Language: French
• Published: 29.07.1988
• Edition: 4
• Subjects: APPARATUS FOR MAKING BEVERAGES; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; COFFEE MILLS; DECORATIVE ARTS; DOMESTIC ARTICLES OR APPLIANCES; FURNITURE; HUMAN NECESSITIES; KITCHEN EQUIPMENT; MOSAICS; PAPERHANGING; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; PRODUCING DECORATIVE EFFECTS; SPICE MILLS; SPRAYING OR ATOMISING IN GENERAL; SUCTION CLEANERS IN GENERAL; TARSIA WORK; TRANSPORTING

A method for forming a decoration on a coating of polytetrafluoroethylene (PTFE) applied on a metallic substrate as applicable in particular to internal and/or external decoration of culinary utensils, and comprising the following steps: forming an anti-adhesive layer of a composition based on an aqueous dispersion of PTFE, which may or may not be colored, on the metallic substrate, after drying and prior to sintering of the anti-adhesive layer, applying on this layer through a serigraphic screen a colored composition containing an aqueous dispersion or a powder of fluorocarbon resin to which are added a thickening and/or gelling agent and a solvent which is miscible with water and has a vapor pressure below that of water after drying, baking the two layers thus obtained simultaneously in order to sinter all the particles of PTFE and of fluorocarbon resin.