Abstract: Process of hot-filling a plastic container comprising a side wall connected to a neck and to a base, with a liquid or viscous product; process consisting in at least filling the container with a product at high temperature, hermetically sealing the container, cooling the container and its contents; process characterized in that a plastic container is used for which the linear thermal expansion coefficient of the side wall is greater than 0.00014 m/(m.K) and in that the container is allowed to expand and shrink at least as much as its contents.

Abstract: The invention relates to a rigid or semirigid plastic part designed to form the bottom of a package whose side wall consists of a laminated film. The plastic part has a central axis and includes the following features: a peripheral welding zone designed to contact and be welded to the inside surface of the side wall; a convex inside face and a concave outside face; the inside face and the outside face each comprise a zone whose centre is on the axis and which is designed to contact a tool used to attach the part to the side wall; and a profile at least partially defined by a curve. The invention also relates to a package having a bottom consisting of the plastic part.

Abstract: Container with an opening and closing element (5) for wine or a similar beverage, comprising three distinct elements (2-4) made of plastic and assembled by welding, these being a flexible laminate (2) that forms the side wall of the said container, an end wall (4) and a shoulder (3) comprising a neck; characterized in that at least one of the three elements (2-4) is oxygen impermeable and in that at least one other element (2-4) is oxygen permeable.

Abstract: Process of hot-filling a plastic container comprising a side wall connected to a neck and to a base, with a liquid or viscous product; process consisting in at least filling the container with a product at high temperature, hermetically sealing the container, cooling the container and its contents; process characterized in that a plastic container is used for which the linear thermal expansion coefficient of the side wall is greater than 0.00014 m/(m.K) and in that the container is allowed to expand and shrink at least as much as its contents.

Abstract: Container with an opening and closing element (5) for wine or a similar beverage, comprising three distinct elements (2-4) made of plastic and assembled by welding, these being a flexible laminate (2) that forms the side wall of the said container, an end wall (4) and a shoulder (3) comprising a neck; characterized in that at least one of the three elements (2-4) is oxygen impermeable and in that at least one other element (2-4) is oxygen permeable.

Abstract: The invention relates to a plastic film (3) including a pre-existing oriented tear zone (11, 7), characterised in that the zone (11, 7) comprises a butt weld (7) which assembles one end of the plastic film (9) with another end of the plastic film (10), said weld zone being disposed in the thickness of one or more of the welding layers of the plastic film (3). The invention also relates to a method and a device for producing said plastic film.

Abstract: The invention relates to a flexible packaging tube formed from a laminate comprising at least one first layer and one second layer, characterized in that the first layer is formed from a material whose properties make it possible to weld the first layer to itself and in that the second layer is formed from a material whose properties make it impossible to weld the second layer onto the first layer.

Abstract: The invention relates to a rigid or semirigid plastic part designed to form the bottom (1) of a package whose side wall (2) consists of a laminated film, said part having a central axis (3) and comprising the following features: a. A peripheral welding zone (4) designed to contact and be welded to the inside surface (5) of said side wall (2); b. A convex inside face (6) and a concave outside face (7); c. The inside face (6) and the outside face (7) each comprising a zone (10, 11), whose centre is on said axis (3) and which is designed to contact a tool used to attach the part to said side wall (2); and d. A profile at least partially defined by a curve. The invention also relates to a package having a bottom consisting of a part as defined above.

Abstract: Packaging produced from a thermoplastic film of which the ends are placed so that they abut, said film being composed of several layers, including at least a first weldable layer and a second layer of which the butt-welding is only partial or non-existent, and at least one thin strip covering said ends and being directly attached to one of the faces of the second layer, the difference in the melting point between the first layer and the other layer or layers being greater than 20° C.

Abstract: The subject of the invention is a package comprising at least two sheets (2, 3) and two flexible films (10a, 10b) placed between them and welded to the sheets (2, 3) by the welds (11a, 11b) respectively, and welded together and to the sheets (2, 3) by the welds (12a, 12b), at least one of the two films being folded over the other at that end of the films on the opposite side to the welds (11a, 11b). The subject of the invention is also a method for manufacturing such a package. The invention makes it possible to obtain a package of simplified structure and simplified manufacture.

Abstract: A package forming a container with two side walls, a base and a top opening, the container being made from a hand tearable material, and having an incipient tear tab for first opening of the package once it is filled and sealed. Each side wall has at least a first stiffening element locally reinforcing the material, the stiffening element being selected such that the propagation energy of the incipient tear tab is lower than the rupture energy of the stiffening element. Each side wall includes means for guiding the incipient tear tab on first opening, with the incipient tear tab located between the first stiffening element and the guide means, so that the tear tab is guided.

Abstract: The invention relates to a package (1) comprising a sealing device (2). Said sealing device consists of a fixed concave shell (3) and a moveable shell (4) which is articulated to said fixed shell (3) by means of pivots (5, 6). The moveable shell is provided with flexion inversion means (7, 8). The invention also relates to a method for producing one such package. Such a package can be used, for example, to store foodstuffs.

Abstract: The subject of the invention is a package comprising at least two sheets (2, 3) and two flexible films (10a, 10b) placed between them and welded to the sheets (2, 3) by the welds (11a, 11b) respectively, and welded together and to the sheets (2, 3) by the welds (12a, 12b), at least one of the two films being folded over the other at that end of the films on the opposite side to the welds (11a, 11b).