Method of printing a laminate for production of dimensionally stable food and drink product containers with application of a primer having an excess of isocyanate groups

US12059704B2 · kind B2 · utility

Assignee

• SIG SERVICES AG · CH

Inventors

• Ulrich Lemme · Bedburg, DE
• Andreas Lemsky · Troisdorf, DE
• Dirk Schibull · Baal, DE

Key dates

• Filing date: Nov 8, 2017
• Grant date: Aug 13, 2024
• Expiry date: Aug 26, 2038

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B41M1/305
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention relates to a method comprising as method steps: a) providing a sheetlike composite precursor comprising a carrier layer; b) overlaying the sheetlike composite precursor on an outer face of the sheetlike composite precursor with a liquid first polymer composition; c) hardening the liquid first polymer composition, thereby obtaining a first polymer layer; and d) overlaying the sheetlike composite precursor on the outer face of the sheetlike composite precursor with a liquid second polymer composition; wherein the first polymer layer in method step d) comprises an isocyanate content in a range from 0.1% to 50% by weight, based on the weight of the first polymer layer. The invention further relates to a sheetlike composite obtainable by the method; a container precursor and a closed container, each comprising the sheetlike composite; and to uses of a liquid primer and the sheetlike composite.