Sheet-like composite, especially packaging laminate for dimensionally stable food-stuff containers, having a polymeric internal layer characterized by differential scanning calorimetry

US11331881B2 · kind B2 · utility

Assignee

• SIG Technology AG · CH

Inventors

• Jannis Ochsmann · Frechen, DE
• Michael Wolters · Heinsberg, DE
• Stefan Pelzer · Gütersloh, DE

Key dates

• Filing date: Dec 21, 2016
• Grant date: May 17, 2022
• Expiry date: Jun 22, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B32B2439/70
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The invention relates to a sheet-like composite including as layers of a layer sequence, in a direction from an external side of the sheet-like composite to an internal side of the sheet-like composite, a) a carrier layer, b) a barrier layer, and c) a polymeric internal layer, where a graph of a differential scanning calorimetry of the polymeric internal layer includes a peak A at a temperature TA and a peak B at a temperature TB, where the temperature TB is more than the temperature TA, where a width of the peak B is less by at least 3° C. than a width of the peak A. The invention further relates to a container precursor and to a closed container including the sheet-like composite, and also to a process by which the sheet-like composite is obtainable, and to a use of the sheet-like composite.