A method includes injection molding a preform using a two phase injection system having a first phase in which a material is injected into the preform and a second phase in which the material is injected into the preform. The preform is disposed in a mold. The preform is blow molded into an intermediate article. The intermediate article is trimmed to form a finished container. The first phase includes injecting a material into the preform to form a single layer of the preform and the second phase includes injecting the material to form inner and outer layers and an intermediate layer between the inner and outer layers. The inner and outer layers include the material and the intermediate layer includes at least one additive. Finished containers are disclosed.

A method includes injection molding a preform using a two phase injection system having a first phase in which a material is injected into the preform and a second phase in which the material is injected into the preform. The preform is disposed in a mold. The preform is blow molded into an intermediate article. The intermediate article is trimmed to form a finished container. The first phase includes injecting a material into the preform to form a single layer of the preform and the second phase includes injecting the material to form inner and outer layers and an intermediate layer between the inner and outer layers. The inner and outer layers include the material and the intermediate layer includes at least one additive. Finished containers are disclosed.

A blow molded article obtained by blow molding of a preform made via parallel flow coinjection, having a wall formed by 3 layers in at least a region wherein the outside layer is transparent and the inner layer comprises an effect pigment visible through the transparent layer. Articles according to the invention have an improved gloss, low haze and higher resistance to delamination than previous articles. The invention relates also to preforms for making articles as described and to methods for making preforms and articles.

The invention concerns a preform (10) for forming a bottle for gaseous beverage, the preform comprising a multilayered wall obtained by injection in a mould from an injecting point (22) located at a central bottom end of the preform, the multilayered wall including an inner layer (24), an outer layer (26) and a gasbarrier layer (28) sandwiched between the inner and outer layer. The gas barrier layer (26) advantageously extends along the entire preform multilayered wall except for a bottom ending portion (30), this bottom ending portion free of barrier layer (30) being a central part of a base-forming portion (20) delimited by a solid angle () comprised between 5 to 80, the apex (C) of this solid angle being the centre of a semi-spherical lower segment of the base-forming portion (20). A bottle obtained by blow-moulding such a preform has a bottom ending portion free of barrier layer within a solid angle comprised between 5 and 50.

A multilayered preform including inner and outer layers of an ethylene terephthalate type polyester resin, and at least one intermediate layer of at least a lowly crystalline ethylene terephthalate type polyester resin and a gas-barrier aromatic polyamide resin, wherein the lowly crystalline ethylene terephthalate type polyester resin contains, as a copolymerizable component, a cyclohexanedimethanol in an amount of 15 to 20 mol % or an isophthalic acid in an amount of 7.5 to 15 mol %, a weight ratio of the lowly crystalline ethylene terephthalate type polyester resin and the gas-barrier aromatic polyamide resin is in a range of 50:50 to 75:25, a weight ratio of the intermediate layer is not less than 1% by weight but is less than 10% by weight per the whole preform, and a haze is not less than 5% in a portion where a multilayered structure has been formed.

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 container including a finish, a body, and a base. The finish includes a top sealing surface, threads, and a support flange. The top sealing surface includes only a base layer. The body and the base each 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 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.

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.

For a preform, on an outer circumferential side of a base material layer, which is made of a first colored resin, a colored layer, which is made of a second colored resin having a color different from that of the first colored resin and which forms a gradation region in which the layer thickness gradually decreases upward, is formed. Furthermore, on the outer circumferential side of the colored layer, a coating layer, which is made of the first colored resin, is formed.