A method for making a fluid substance container starting from a preform, the container coupled by a ring nut to a hermetic pump to form a fluid substance dispensing device, including heating and blow-moulding the preform to obtain the container; the preform formed of an external body and an internal body mutually assembled before being blow-moulded, the external body being cup-shaped with a first free end, the internal body being cup-shaped with a second free end having a flange whereby, when the internal body and external body are assembled, the flange abuts the first free end and protrudes a distance along an external perimeter of the external body near the free end, the external body being configured to form—once blow-moulded—the external recipient of the container while the internal body is configured to form a deformable bag housed inside the container, the ring nut having a undercut which engages the flange so that when the ring nut is removed the now empty deformable bag comes with it, in addition to the pump.

A method of manufacturing a container includes removing a section of the base web of the outer container so that a section of the base seam of the inner container is exposed to the exterior; raising the exposed section of the base seam into the outer container so that an opening is produced between the base seam of the inner bag and the outer container, introducing a pressure medium into the opening, whereby the inner bag detaches from the outer container on both sides, and supplying a pressure medium into the container opening so that the inner bag again engages the outer container.

The method for manufacturing a container having a substantially stiff outer container and a readily deformable inner bag of thermoplastic plastic materials which do not form a weld connection with one another, with a container opening and holes in the outer container, wherein the method includes forming holes in the wall of the outer container at diametrically opposed positions, which lie on the intersection line of a plane defined by the base seam and the longitudinal axis of the container with the container wall and that a pin-shaped tool forces the inner bag through the holes by a predetermined distance from the wall of the outer container and thereby detaches it from the wall, whereafter a pressure medium is introduced through the holes into the gap between the inner bag and the outer container, which detaches the inner bag from the wall of the outer container.

Bag-in-container with a coating layer The invention is in the field of containers for foods and drinks. There is provided a method for applying a coating layer (10, 14, 2, 4) on a preform (1, 2, 7) for a bag-in-container using plasma deposition. There is also provided a preform (1, 2, 7) for a bag-in-container, comprising an inner preform (8) and an outer preform (9) with facing surfaces, wherein at least one of the facing surfaces comprises a coating layer (10, 14, 2, 4) that is applied using plasma deposition.

Container (1) with a coating layer. The invention is in the field of containers for foods and drinks. There is provided a method for applying a coating layer (2, 4) on a preform (1, 2) for a container (1) using plasma deposition. There is also provided a preform (1, 2) for a container (1), as well as a container (1) obtainable by stretching of the preform (1, 2).

Provided is a method for manufacturing a container including a casing configured to contain a content, the casing including an inner layer having an inner layer opening and an outer layer having an air communication port communicating between a space between the outer layer and the inner layer and the outside. The method includes preparing a casing in which at least part of the inner layer and at least part of the outer layer are in contact with each other, inserting a support column inside the inner layer through the inner layer opening of the prepared casing, and separating the inner layer from the outer layer by supplying air into the space through the air communication port to bring part of the separated inner layer into contact with the support column. The support column includes a columnar portion and an extending portion extending from the columnar portion.

The method for producing a container consisting of a rigid outer container and a deformable inner bag. A first screw conveyor supplies a first thermoplastic plastics material for the outer container and at least a second and a third screw conveyor supplies at least a second and a third thermoplastic plastics material for the inner bag to an extruder which coextrudes a parison consisting of at least the first, second and third layers. The parison is inflated by a pressure medium to bring it into contact with the wall of the blow mould, where excess material below the welded seam is cut off and the container is removed from the blow mould. The second thermoplastic plastics material forming the outer layer of the inner bag consists of a material which, in the hardened state, has a rough surface having microscopically small elevations and depressions.

A production apparatus of a two-layer preform including an inner layer preform and an outer layer preform includes: an outer layer cavity mold for injection-molding the outer layer preform. A bottom surface of the outer layer cavity mold is provided with a protrusion for separating the inner layer preform disposed in the outer layer cavity mold from the bottom surface.

A preform for molding a dual container, in which an inner preform is inserted into an outer preform in a state in which a mouth portion of the inner preform is fitted into a mouth portion of an outer preform, the inner preform is formed of a crystalline resin, a crystallized region is provided in at least a portion of the inner preform, the crystallized region having a degree of crystallization greater than that of the other portion, the portion of the inner preform adjacent to the mouth portion from below the mouth portion and located below the outside air introduction hole, a step portion facing upward and a rib extending upward from the step portion are formed on an inner circumferential surface of the inner preform, and at least a part of the rib is adjacent to the crystallized region from above the crystallized region.

An assembled preform (1) is provided for the making of a blown container, comprising a first external preform body (10) which comprises a neck part (2) which has an external region (4) which includes a threaded region (5) and an internal surface (3), and a second internal preform (11) which is suitable to be completely contained within said first external preform body (10), said second internal preform (11) having a neck region (12) suitable to cooperate with said neck internal surface (3) of said first external preform (10), the preform being characterized in that said neck region (12) of said second internal preform (11) comprises locking means (13,14) integrally obtained on the material of said second preform (11) and suitable for cooperating by blocked interference with said internal region (3) of the neck part (2) of said external preform (10) when said second internal preform (11) is inserted in said first external preform (10).