Multilayer plastic container

US8383219B2 · kind B2 · utility

Assignee

• Mauser Werke GmbH · DE

Inventors

• Klaus-Peter Schmidt · Bonn, DE
• Frank Schüller · Frechen, DE
• Reinhard Schubbach · Bergen, DE

Key dates

• Filing date: Mar 2, 2012
• Grant date: Feb 26, 2013
• Expiry date: Mar 2, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1393
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

A multilayer thermoplastic container for storing and transporting liquid contents, especially combustible or explosive contents, is made of at least three superimposed layers and includes at least one layer for discharging an electric charge. The innermost layer of the container in contact with the liquid content is made of virgin material and a second integrated inner layer which is covered by the innermost virgin material layer is electrically conductive as a result of incorporated additives, e.g. conductive carbon black and is covered on the outside by another electrically non-conductive layer. Electric charge carriers that accumulate on the surface of the thin inner layer due to the friction with the content are “suctioned through” large areas of the inner, electrically non-conductive layer by the second, electrically conductive layer and discharged.