Abstract:
A method for producing a preform and a preform produced by extrusion blow molding for producing plastic containers in a stretch blow molding process and having a neck portion and a body portion closed by a preform base, which portions are separated from each other by a supporting ring protruding from the outer wall. The preform has a body portion of which the outside diameter narrows from the supporting ring in the direction of the preform base.
Abstract:
The two-layered preform includes a tubular body having a mouth providing a neck at a first end thereof and a closed bottom at an opposite second end. At least part of the tubular body is formed by a first layer (P1) made of a primary molding material and a second layer (P2) made of an overmolding material. The first layer (P1) is an inner layer made of a primary molding material providing a barrier effect against light by absorption, and the second layer (P2) is an outer layer made of an overmolding material providing a barrier effect against light by reflection. The neck is formed with the overmolding material of the second layer (P2) not coated by the primary molding material of the first layer (P2).
Abstract:
A process of manual, semi-automatic and fully-automated integration of discrete components into a container that results in fast, reliable, cost-effective, and scalable production of composite containers is disclosed. The process can be embodied in manufacturing equipment that has a series of stations and may be called an assembly device. The equipment can produce containers, tubs, canisters, cartridges, etc. which are easily separated into different bio-degradable or compostable parts. Other container types are possible and are contemplated.
Abstract:
A process of manual, semi-automatic and fully-automated integration of discrete components into a container that results in fast, reliable, cost-effective, and scalable production of composite containers is disclosed. The process can be embodied in manufacturing equipment that has a series of stations and may be called an assembly device. The equipment can produce containers, tubs, canisters, cartridges, etc. which are easily separated into different bio-degradable or compostable parts. Other container types are possible and are contemplated.
Abstract:
A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. A preform for blow molding a blow molded syringe is described, the preform including a proximal end having a retention mechanism adapted to connect to the syringe to a powered injector, a distal end having a syringe outlet section, and a barrel section between the retention mechanism and the syringe outlet section, wherein the barrel section is adapted to be blow molded to form a cylindrical wall of a syringe barrel defined between the retention mechanism and the syringe outlet section.
Abstract:
The mold includes a first molding cavity connected to a first hot channel for supplying a primary molding material, a second overmolding cavity connected to a second hot channel for supplying an overmolding material; and a core configured to be first introduced in the first cavity for a molding operation of a first layer, and to then be introduced, with the first layer thereon, in the second cavity for an overmolding operation of a second layer. At least one supporting member is arranged to support the core with respect to the first cavity during the entire molding operation of the first layer. An opening left in the first layer by the supporting member is filled and/or covered by the second layer.
Abstract:
The invention concerns a preform for a plastic container in the form of a can intended particularly for pressurised beverages, and the preform holder in the container manufacturing process. The preform (10) consists of a body (1) with a neck (3) ended with a thin outer flange (4). A supporting flange (6) is formed on the inner wall of the neck (3a), while the outer surface of the neck (3b) is even. The preform holder comprises a body (11) provided with pockets (13). The pockets seat mobile-anchored clasps (14) which are clamped on the body (11) with an elastic clamping ring (15). The clasps (14) each ends with a tooth (16) which extends over the seat (17) where the thin outer flange (4) of the preform (10) rests. The inner side wall of the seat (17) has a groove (19) carved in it to accommodate the supporting flange (6) of the preform (10).
Abstract:
A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. An inner diameter of the syringe barrel can, for example, be sufficiently constant (over at least a portion of the axial length of the syringe) that a plunger slidably positioned within the syringe barrel and in generally sealing contact with an inner wall of the syringe barrel can be used within the syringe barrel to generate a pressure of at least 1 psi within the syringe barrel. In several embodiment, the inner diameter of the syringe barrel is sufficiently constant to generate a pressure of at least 100 psi, at least 300 psi, or even at least 500 psi within the syringe barrel. A method of forming a syringe includes the steps of: injection molding at least one polymeric material to form a preform; placing the preform into an blow mold die; and expanding at least a portion of the preform while heating the preform within the die to form a barrel of the syringe. The syringes can be formed to withstand relatively high pressures as described above. The at least one polymeric material can, for example, be polyethyleneterephthalate, cyclic olefin polymer, polypropylene, polystyrene, polyvinylidene chloride, polyethylene napthalate and/or nylon.
Abstract:
A syringe for use in a pressurized injection of a fluid includes a syringe barrel including a polymeric material having undergone expansion via blow molding. An inner diameter of the syringe barrel can, for example, be sufficiently constant (over at least a portion of the axial length of the syringe) that a plunger slidably positioned within the syringe barrel and in generally sealing contact with an inner wall of the syringe barrel can be used within the syringe barrel to generate a pressure of at least 1 psi within the syringe barrel. In several embodiment, the inner diameter of the syringe barrel is sufficiently constant to generate a pressure of at least 100 psi, at least 300 psi, or even at least 500 psi within the syringe barrel. A method of forming a syringe includes the steps of: injection molding at least one polymeric material to form a preform; placing the preform into an blow mold die; and expanding at least a portion of the preform while heating the preform within the die to form a barrel of the syringe. The syringes can be formed to withstand relatively high pressures as described above. The at least one polymeric material can, for example, be polyethyleneterephthalate, cyclic olefin polymer, polypropylene, polystyrene, polyvinylidene chloride, polyethylene napthalate and/or nylon.
Abstract:
A process for blow-molding a container, the container comprising a handle, whereby the process comprises the steps of: (i) introducing a thermoplastic preform (2) into a mold cavity (6) and stretching the preform (2) with a stretch rod (3); (ii) increasing the pressure within the preform (2) so that the preform (2) expands within the mold cavity (6); (iii) displacing at least one moving mold section (4) within the mold and which deforms the thermoplastic material; wherein the displacement of the moving section (4) is in a direction which is substantially parallel to the direction of movement of the stretch rod (3)