Moldings with self-cleaning properties and process for...

B - Operations – Transporting – 29 – C

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Details

B29C 59/02 (2006.01) B08B 17/06 (2006.01) B29C 71/00 (2006.01) C08J 5/12 (2006.01) C08J 7/04 (2006.01) C08J 7/06 (2006.01)

Patent

CA 2472181

The invention relates to shaped bodies with plastic surfaces having self- cleaning properties and a method for producing such shaped bodies. Self- cleaning surfaces and the advantages thereof are generally known. There are several methods for obtaining such surfaces, two of which have become common practice. One of said two methods is based on fixing particles to surfaces, the particles creating elevations by means of which the self-cleaning effect is created. According to the inventive method, said surfaces are created by making plastic surfaces swell by means of a swelling means containing suitable particles in a suspension. The particles are then embedded in the swollen surfaces. Upon removing the swelling means, the particles are firmly anchored on the plastic surface. Molded bodies that are produced according to the inventive method have the advantage that they can be produced in a conventional manner and can later be enhanced with self-cleaning properties, regardless of their shape. The inventive shaped bodies can be drinking cups, barrels, storage containers, storage canisters, and splash guard devices, or textile fabrics and woven textiles.

La présente invention concerne un corps moulé présentant des surfaces en plastique qui ont des propriétés autonettoyantes, et un procédé de réalisation d'un corps moulé de ce type. Les surfaces autonettoyantes et leurs avantages sont connus de manière générale. Il existe différents procédés pour parvenir à la réalisation de surfaces de ce type. Deux procédés principaux se sont imposés, un procédé se basant sur la fixation de particules sur des surfaces, les particules produisant la formation de parties en saillie qui sont à l'origine d'un effet autonettoyant. L'invention concerne la réalisation de ces surfaces en faisant gonfler des surfaces plastiques au moyen d'un agent gonflant dans lequel des particules appropriées sont en suspension, les particules se trouvant alors noyées dans les surfaces qui ont gonflé, et les particules étant ancrées dans les surfaces plastiques après élimination de l'agent gonflant. De cette manière, les corps moulés produits présentent l'avantage de pouvoir être réalisés de façon normale, et de pouvoir être dotés par la suite de propriétés autonettoyantes, indépendamment de leur forme. Selon l'invention, les corps moulés peuvent par ex. être des gobelets à boire, des barils, des réservoirs et des emballages de stockage, des dispositifs de protection contre les projections ou des surfaces textiles ou tissus dans le cadre de la construction textile.

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