A preform for an integrally blow-moulded bag-in-container uses an inner layer and an outer layer, wherein the preform forms a two-layer container upon blow-moulding, and wherein the obtained inner layer of the container releases from the thus obtained outer layer upon introduction of a gas at a point of interface between the two layers. At least one of the inner and outer layers includes at least one additive allowing both inner and outer layers to reach their respective blow-moulding temperatures substantially simultaneously.

The disclosure provides a preform layered body and a layered container produced by biaxial stretch-blow forming of the layered body. In this preform layered body, an RFID tag has been inserted between an inner-layer-use mouth part and an outer-layer-use mouth part that are to remain unaltered, with no biaxial stretch-blow forming performed thereon, as a container mouth part for a layered container. Since the container mouth part does not become exposed to the high temperature and high pressure for stretch-blow forming purposes, abuses to the RFID tag, such as damage, breakage, and deformation, which arise from the heating, pressurization, and stretching during the stretch-blow forming, can be avoided reliably. In addition, labor-saving and counterfeit prevention effect can be anticipated by causing the RFID tag to hold product information.

The present invention relates to an integrally blow-moulded bag-in-container (2) and preform (1, 1′) for blow-moulding the bag-in-container. An inner layer (11) and an outer layer (12) are used, wherein the preform forms a two-layer container upon blow-moulding, and wherein the obtained inner layer of said container releases from the thus obtained outer layer upon introduction of a gas at a point of interface (14) between the two layers. At least one of the inner and outer layers includes at least one additive allowing both inner and outer layers to reach their respective blow-moulding temperatures substantially simultaneously.

A method comprises the following steps: providing a pre-processed element made of at least one polymeric material, introducing the pre-processed element in a female mould part having a forming cavity, shaping the pre-processed element between the female mould part and a male mould part, the female mould part and the male mould part being movable relative to one another along a moulding direction so as to form a concave object from the pre-processed element. The forming cavity has a transversal dimension measured transversely relative to the moulding direction, the forming cavity further having a transition zone in which the transversal dimension passes from a larger value to a smaller value, the forming cavity further having a bottom. During the introducing step, the pre-processed element is placed on the transition zone, so that the pre-processed element rests on the transition zone at a distance from the bottom of the forming cavity.

The present invention provides a double container capable of suppressing the deterioration of the gas barrier property under high humidity environment. According to the present invention, provided is a double container comprising a container body, wherein the container body has an outer shell and the inner bag, the container body is configured such that the inner bag contracts as content is reduced, and the inner bag comprises an inner layer, a gas barrier layer, and an outer layer, in order from an inside of the container body.

A preform and methods for making the preform, as well as containers made by blow molding an additive manufactured preform.

A method for manufacturing a container includes injecting a first material into a first mold to form a top portion of a preform. The first material and a second material are injected into the first mold to form a bottom portion of the preform. The preform is disposed in a second mold. The preform is blow molded into a finished container.

A method for manufacturing a container including: forming a preform by injection molding, the preform having a bottom portion, a body portion, and a finish portion including a top sealing surface, threads, and a support flange; forming the preform such that the top sealing surface is made of a base layer, and such that the body portion and the bottom portion are both made of the base layer and an oxygen barrier layer; and forming the container from the preform by blow molding. The top sealing surface includes only the base layer. The body portion and the bottom portion both include an inner portion made of the base layer, an outer portion made of the base layer, and an oxygen barrier layer between the inner portion and the outer portion.

A pre-form assembly to make a container (110) for beverages comprises an external pre-form (12) and an internal pre-form (14), each configured to form respectively an external drum (112) and an internal bag (114) of the container (110). The internal pre-form (14) is associable internally with the external pre¬form (12) so as to define with the external pre-form (12) a hollow space (13), and the internal (14) and external (12) pre-forms comprise respective coupling members (30, 34, 38) in correspondence with respective neck portions (22, 26) suitable to reciprocally position the external pre-form (12) and the internal pre-form (14) along a longitudinal axis (X).

A preform configured to form a container. The preform includes a finish defining an opening and a top sealing surface configured to contact a closure to seal the opening closed. A body portion extends from the finish. A bottom portion is at an end of the preform opposite to the finish. A longitudinal axis of the preform extends through an axial center of the bottom portion. An oxygen barrier layer extends along the body portion to the bottom portion and across the bottom portion. A base layer includes an outer portion and an inner portion. The oxygen barrier layer is between the outer portion and the inner portion. The oxygen barrier layer extends along the body portion and the bottom portion.