Plastic packaging container with improved ability for electrostatic charge derivation

US5759649A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Peter Dinter · Obermoschel, DE
• Joachim Nowotnick · Frankfurt, DE

Key dates

• Filing date: Aug 30, 1995
• Grant date: Jun 2, 1998
• Expiry date: Aug 30, 2015

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/24876
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The packaging container according to the invention for receiving filled product can be used as a self-supporting container or as an in-liner or insert container in supporting outer containers such as corrugated paperboard boxes, wooden cases, box pallets with mesh panels, or drums. The packaging container comprises a multilayered composite film combination which is made up of a polymer film with barrier layer properties, acting as the outer layer of the container, an intermediate layer made of an electrically conductive material and also a further polymer film, forming the inner layer of the packaging container. According to the invention, the further polymer film, forming the inner layer of the packaging container, bears a perforation pattern and the electrically conductive intermediate layer is in connection with a grounding system via electric contact points. The polymer film forming the inner layer of the packaging container is preferably a heat-sealable monofilm or a coextruded film.