Method for producing a polymer coating inside hollow plastic articles

US5677010A · kind A · utility

Assignee

• Kautex Werke Reinold Hagen Aktiengesellschaft · DE

Inventors

• Klaus Esser · Hösbach, DE
• Ulrich Karsch · Niederkassel, DE
• Ju rgenel · Bonn, DE
• Heinrich nwald · Gomaringen, DE
• Klaus Nauenburg · Hanau, DE
• Ju rgenhart · Balzers, LI
• Christoph Diener · Nagold, DE

Key dates

• Filing date: Jun 17, 1996
• Grant date: Oct 14, 1997
• Expiry date: Jun 17, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B05D2201/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A method for producing at least a polymer surface layer on at least part of the inner surface of a hollow article that is at least partially of plastic, comprising coating said at least part of the inner surface of the hollow article by establishing a low pressure gas atmosphere within the hollow article, formin a polymerizable plasma within the article by excitation of the gas atmospher within the article by high-frequency electromagnetic energy, and allowing polymerization of the gas atmosphere to take place, whereby a polymerized coating is applied to said part of the inner surface, the gas atmospherre that forms the plasma containing a component that predominantly forms chains at sufficient speed and can be polymerized under the particular plasma conditions, and a component that forms predominantly branching or cross-linking points and can be polymerized under the particular plasma conditions.