The present invention relates to an opening device on a packaging container for liquid or semi-liquid food. The packaging container has a fold line and an opening line intersecting in an intersection point, thereby dividing the opening line into a first opening line portion and a second opening line portion. The opening device comprises a first opening device portion and a second opening device portion, wherein the first opening device portion has an opening edge that is at least partly aligned along the first opening line portion and arranged on a first side of the opening line. The second opening device portion has an opening edge that is at least partly aligned along the second opening line portion and arranged on a second side of the opening line. The invention also comprises a packaging container with an opening device and a method of manufacturing the packaging container.

The present invention relates to an opening and closure device on a packaging container for liquid or semi-liquid food. The packaging container has a fold line and an opening line intersecting in an intersection point, thereby dividing the opening line into a first opening line portion and a second opening line portion. The opening and closure device comprises an opening device adapted for facilitating rupture of the packaging material along the opening line, and a closure device adapted for re-closing the packaging container after opening along the opening line. The invention also comprises a packaging container with an opening and closure device and a method of manufacturing the packaging container.

Various embodiments of the present invention relate to a multilayered structure and a method of making the same. Various embodiments relate to a balloon including the multilayered structure. In various embodiments, the present invention provides a multilayered structure that can include a layer (a) including a cyclic olefin polymer or copolymer and an olefin polymer or copolymer. The multilayered structure can also include a layer (b) comprising a cyclic olefin polymer or copolymer and an olefin polymer or copolymer. Layer (a) can be substantially in contact with layer (b).

A method comprises the steps of: providing a cap-shaped body (2; 102), said body (2; 102) having a side wall (4) extending around an axis (Z) and a transverse wall (5; 105) arranged transversely to the axis (Z) for delimiting a concavity (7) of the body (2), the transverse wall (5; 105) having an inner face (8; 108) facing the concavity (7) and an outer face (9; 109) opposite the inner face (8; 108); placing a dose (43) of polymeric material on the outer face (9; 109) of the transverse wall (5; 105); compression moulding the dose (43) in contact with the outer face (9; 109), thereby obtaining a shaped element (3) from the dose (43), said shaped element (3) being attached to the transverse wall (5; 105).

A multilayer ethylene-based shrink films comprising a core layer comprising a polyethylene resin,and two skin layers, wherein the core layer is positioned between the two skin layers,wherein the polyethylene resin comprises greater than 50 mol. % of the units derived from ethylene and less than 30 mol. % of the units derived from one or more alpha-olefin comonomers, has greater than 50% of the copolymer fraction eluting between 75.0 C. and 95.0 C. as determined by Crystallization Elution Fractionation (CEF), and has a density ranging from 0.915 to 0.940 g/cc, and wherein the film is biaxially-oriented.

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 -olefin comprising 4 to 10 carbon atoms, the polyethylene having a density of 870 and 920 kg/m.sup.3 as 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.

Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300 C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460 C. in at least one hot zone of the extruder.

Process for treatment of an initial polyethylene-containing material to produce a polyethylene composition comprising providing a twin-screw extruder with thermal regulation devices; providing an initial polyethylene-containing material comprising at least 50 wt. % of polyethylene based on the total weight of the initial polyethylene-containing material; extruding the initial polyethylene-containing material to obtain a polyethylene composition; wherein extrusion is performed with a residence time of less than 20 min; and recovering a polyethylene composition; wherein extruding comprises a thermal treatment of the initial polyethylene-containing material at a temperature of at least 300 C. in one or more hot zones of the extruder by self-heating to have a maximum barrel temperature ranging from 300 to 460 C. in at least one hot zone of the extruder.

A method for heating a preform (1) comprising a body portion (4) extending along a longitudinal axis (A1). The method comprises the following steps: introducing the preform (1) into a heating apparatus (5) comprising an array of infrared emitters (50) arranged in multiple columns (Cj) and rows (Ri); setting power levels of the infrared emitters (50) so as to divide said array into subsets of columns (SCn); andheating the preform while translating it in a direction parallel to the rows (Ri), and simultaneously rotating it around its longitudinal axis, the rotation and translation speeds, and the power levels of the infrared emitters (50) being set so that the power levels of the subsets of columns (SCn) facing zones (42) of the body portion extending longitudinally are different from the power levels of the subsets of columns facing the rest of the body portion, said zones extending relative to one another in a polygonal array.

Compositions for forming rotationally molded (rotomolded) parts, methods for forming the rotomolded parts, and the rotomolded parts are provided. An exemplary rotomolding composition includes a virgin resin, including a polyethylene polymer, and a postconsumer recycle (PCR) resin.