Container liner for holding liquids

US12187533B2 · kind B2 · utility

Assignee

• SABIC GLOBAL TECHNOLOGIES B.V. · NL

Inventors

• Li-Pin YUAN · 安丰镇, CN
• Jianfeng Huang · Shanghai, CN
• Bart Albertus Hubertus van den Esschert · Geleen, NL
• Shengming CUI · Geleen, NL

Key dates

• Filing date: Jun 9, 2020
• Grant date: Jan 7, 2025
• Expiry date: Jul 27, 2041

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/03
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

The present invention relates to a container liner for holding liquid goods, wherein the liner comprises a film comprising one or more layers, wherein at least one of said layers is a layer L1 comprising (a) ≥20.0 wt %, preferably ≥20.0 and ≤80.0 wt %, with regard to the total weight of that layer L1, of a polyethylene P1 having: •a density of >900 and <915 kg/m3, preferably of >905 and <913 kg/m3 as determined in accordance with ASTM D1505 (2010); •a melt mass flow rate of ≥0.1 and ≤5.0 g/10 min, preferably of ≥0.5 and ≤2.0 g/10 min, as determined in accordance with ISO 1133-1 (2011) at 190° C. using a load of 2.16 kg; and (b) ≥20.0 wt %, preferably ≥20.0 and ≤80.0 wt %, with regard to the total weight of that layer L1, of a polyethylene plastomer P2 having: •a density of >880 and <905 kg/m3, preferably of >890 and <904 kg/m3 as determined in accordance with ASTM D1505 (2010); •a melt mass flow rate of ≥0.1 and ≤5.0 g/10 min, preferably of ≥0.5 and ≤2.0 g/10 min, as determined in accordance with ISO 1133-1 (2011) at 190° C. using a load of 2.16 kg. Such container liner demonstrates a desirably high flex resistance, combined with a high dart impact resistance, and a high tensile st…