In one aspect, a method of coinjection molding a multilayer article having a multi-segment internal layer is disclosed. A surface layer material is injected into a mold cavity from at least one of an inner outlet and an outer outlet of a multi-channel nozzle. An internal layer material is intermittently injected into the mold cavity from an intermediate outlet of the multi-channel nozzle that is between the inner and outer outlets. The intermittent injecting of the internal layer material is controlled, at least in part, by intermittent opening and closing of the intermediate outlet. An apparatus for coinjection molding the multilayer article with the segmented internal layer is also disclosed.

The invention is an integrally blow-moulded bag-in-container and preform and a method for making it. The bag-in-container has an inner layer forming the bag and an outer layer forming the container, and a mouth fluidly connecting the volume defined by the bag to the atmosphere. The container further has at least one interface vent fluidly connecting the interface between inner and outer layers to the atmosphere, wherein the at least one vent runs parallel to the interface between inner and outer layers and opens to the atmosphere at a location adjacent to, and oriented coaxially with the bag-in-container's mouth. Processes for manufacturing a preform and a bag-in-container as defined above are defined too.

A system for forming injection molded articles includes a turret, a first mold unit, and a second mold unit. In an embodiment, the turret includes a plurality of core plates and each core plate includes a plurality of core pins. The first mold unit may be configured to form an inner injection molded layer, and the second mold unit may be configured to form an outer injection molded layer over the inner injection molded layer. In an embodiment, the first mold unit and the second mold unit are configured to mold at the same time, and to provide opposing clamping forces. Processes involving over-molded articles are also disclosed.

Methods and apparatuses for improving multilayer preform injection molding. The apparatus may be an apparatus for injection molding. The apparatus may include an injection unit, a first mold, a second mold, and a main runner. The apparatus may also include a sub-runner branched and connected from the main runner and feeds molten resin to a cavity. The apparatus may further include a main closing and opening unit configured to close and open the main runner. In addition, the apparatus may include a sub-closing and sub-opening unit configured to close and open the sub-runner.

The present invention relates to an integrally blow-moulded bag-in-container and preform for blow-moulding the bag-in-container. An inner layer and an outer layer are used, 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 invention relates to a dispenser container consisting of an outer container and an inner container for receiving a fluid, wherein the outer container and the inner container are formed from blow-moulded plastics, which do not form an integral connection with one another, and wherein a first plastic from which the inner container is formed has a higher elasticity than a second plastic from which the outer container is formed, such that the inner container is deformable, and wherein the outer container has at least one pressure compensation opening for pressure compensation in the region between the outer container and the inner container, wherein the inner container has a first outlet region and the outer container has a second outlet region, wherein the first outlet region can be shifted relative to the second outlet region in an outlet direction.

A molded article suitable for subsequent blow-molding into a final-shaped container. The article includes a neck portion; a gate portion; and a body portion extending between the neck portion and the gate portion, at least a majority of the body portion having an overall shape which is symmetric about a body axis extending longitudinally through a center of the body portion. The body portion includes an inner exterior layer and an outer exterior layer of a first polymeric material; and a core layer of a second polymeric material disposed between the inner exterior layer and the outer exterior layer. A radial thickness or a material of the core layer is selectively varied to govern non-uniform blow molding of the molded article into the final-shaped container.

The invention is an integrally blow-moulded bag-in-container and preform and a method for making it. The bag-in-container has an inner layer forming the bag and an outer layer forming the container, and a mouth fluidly connecting the volume defined by the bag to the atmosphere. The container further has at least one interface vent fluidly connecting the interface between inner and outer layers to the atmosphere, wherein the at least one vent runs parallel to the interface between inner and outer layers and opens to the atmosphere at a location adjacent to, and oriented coaxially with the bag-in-container's mouth. Processes for manufacturing a preform and a bag-in-container as defined above are defined too.

A method for manufacturing a glass with a stem or with a base made of a plastic material, the glass including a receiving portion mounted over a base or over a stem, the method being implemented by a rotary tooling comprising a plurality of workstations and at least one mold wherein the method includes the following steps: a) forming of the receiving portion of the glass on at least one first workstation called injection station; b) overmolding of the stem or of the base over the receiving portion, in order to form a glass with a stem or with a base, the overmolding being carried out on at least one other workstation called overmolding station; c) ejection of the glass thus formed on the overmolding station or on another workstation called ejection station.

The invention is an integrally blow-moulded bag-in-container and preform and a method for making it. The bag-in-container has an inner layer forming the bag and an outer layer forming the container, and a mouth fluidly connecting the volume defined by the bag to the atmosphere. The container further has at least one interface vent fluidly connecting the interface between inner and outer layers to the atmosphere, wherein the at least one vent runs parallel to the interface between inner and outer layers and opens to the atmosphere at a location adjacent to, and oriented coaxially with the bag-in-container's mouth. Processes for manufacturing a preform and a bag-in-container as defined above are defined too.