Sabic Global Technologies B.v.

Saudi Basic Industries Corporation

Jacobus Christinus Josephus Franciscus Tacx

Peter Neuteboom

Diego Mauricio Castaneda Zuniga

Priya Garg

Maria Soliman

Franciscus Petrus Hermanus Schreurs

Attilio Scala

Niclasina Siberta Johanna Alberdina Gerrits

Shengming Cui

Ling Fan

Geert Imelda Valeer Bonte

Marcellinus Guilliam Marie Neilen

Hongtao Shi

Shan Qin

Marcellinus Guilliame Marie Neilen

Geert Imelda Valerie Bonte

The present invention relates to a multilayer film comprising: • an inner layer system comprising a first surface and a second surface; • a first skin layer bound to the inner layer system at the first surface of the inner layer system; and • a second skin layer bound to the inner layer system at the second surface of the inner layer system; wherein • the inner layer system comprises a first ethylene-based polymer; and • at least one of the first or the second skin layer(s) is a sealing layer and comprises a second ethylene-based polymer having a peak melting temperature Tof at least 10° C. below the Tof the first ethylene-based polymer, Tbeing determined as peak melting temperature in accordance with ASTM D3418 (2008); wherein the multilayer film is a bi-directionally oriented film wherein the orientation is introduced in the solid state. 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.

Bi-directionally oriented multilayer film

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 invention relates to a process for the preparation of low density polyethylene (LDPE) wherein the polymerisation takes place in a tubular reactor at peak temperatures ranging from 180° C. to 350° C. and at pressures ranging from 150 to 350 MPa and wherein the total effective length of the polymerisation reactor divided by the number of reaction zones is in the range from 230 to 350 m.

Process for the preparation of ethylene homo- or copolymers in a tubular reactor

The invention relates to a high-pressure polymerisation process for the preparation of polyethylene. A polymer is added to the extruder via a side feed dosage unit wherein the MFIof the polymer added via the side feed dosage unit has a higher value than the melt flow index (MFL) of the polyethylene end product and wherein the Mw/Mn of the end product increases at least 15% compared to the product wherein no polymer is dosed via the side feed.

High-pressure polymerisation process for the preparation of polyethylene

The invention relates to a process for the preparation of a copolymer of ethylene and a monomer copolymerizable therewith. The polymerization takes place in a tubular reactor at a peak temperature between 290&#xb0; C. and 350&#xb0; C., the co monomer is a di- or higher functional (meth)acrylate and the co monomer is applied in an amount between 0.008 mol % and 0.200 mol % relative to the amount of ethylene copolymer.

Process for the preparation of an ethylene copolymer in a tubular reactor

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Roermond, Netherlands

Jacobus Christinus Josephus Franciscus Tacx