Sabic Global Technologies B.v.

Shengming Cui

Maria Soliman

Priya Garg

Jacobus Christinus Josephus Franciscus Tacx

Bart Van Den Esschert

Ling Fan

Hongtao Shi

Li Yuan

Shan Qin

Jianfeng Huang

Yuan Li

The present invention related to a film comprising multiple co-extruded film layers, the film having a length and a width, and a thickness defined as the dimension of the film perpendicular to the plane defined by the length and the width, wherein the film is a bi-axially oriented film comprising at least a core layer A, having a first and a second surface, and one or two sealing layer(s) B, wherein the core layer A comprises a polypropylene, and wherein the sealing layer B comprises >50.0 wt % of a polyethylene comprising moieties derived from ethylene and moieties derived from an α-olefin comprising 4 to 10 carbon atoms, the polyethylene having a density of ≥870 and ≤920 kg/mas determined in accordance with ASTM D1505 (2010), with regard to the total weight of the sealing layer B, wherein the sealing layer B directly adheres to one of the first or second surface of the core layer A. Such film allows for the production of a sealed package having a sufficiently high sealing strength at reduced sealing temperatures, also referred to as the seal initiation temperature.

Biaxially oriented polypropylene film for heat sealing

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/m, preferably of >905 and <913 kg/mas 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/m, preferably of >890 and <904 kg/mas 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 strength.

Container liner for holding liquids

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Geleen, Netherlands

Shengming Cui