An injection-molding device for producing a hollow-formed plastic object, at least comprising a mold for the primary shaping of the plastic object, an injection device for at least partially introducing a flowable polymer melt into a cavity within the mold and a fluid injection device for introducing a pressurized fluid and for driving a projectile through the polymer melt introduced into the cavity, the mold comprising a mold wall and a mold core that is arranged at least partially within the mold wall, the projectile being formed at least partially in such a hollow-formed manner that it is arranged on the mold core and is movable along a longitudinal extent of the mold core on the latter. A projectile injection process for producing a hollow-formed plastic object with this injection-molding device and a hollow-formed plastic object produced by this process.

An injection-molding device for producing a hollow-formed plastic object, at least comprising a mold for the primary shaping of the plastic object, an injection device for at least partially introducing a flowable polymer melt into a cavity within the mold and a fluid injection device for introducing a pressurized fluid and for driving a projectile through the polymer melt introduced into the cavity, the mold comprising a mold wall and a mold core that is arranged at least partially within the mold wall, the projectile being formed at least partially in such a hollow-formed manner that it is arranged on the mold core and is movable along a longitudinal extent of the mold core on the latter. A projectile injection process for producing a hollow-formed plastic object with this injection-molding device and a hollow-formed plastic object produced by this process.

The present invention relates to a multilayer container preform and a multilayer container, said preform or container comprising a base, a body and a neck finish, said base and body comprising an outer layer defining an exterior surface, an inner layer defining an interior surface and interior space, and an intermediate layer disposed between the outer layer and the inner layer, said outer layer and said inner layer comprising a primary material selected from the group consisting of a 2,5-furandicarboxylate polyester or co-polyester or a blend thereof, and said intermediate layer comprising a secondary material different from the primary material, but compatible with the primary material. The invention relates to methods of producing such a multilayer container preform and multilayer container

A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

A blow molding apparatus for mitigating a difference in flow rates of a liquid supplied from a blow nozzle to a preform. The blow molding apparatus includes a blow nozzle that mates with an open tube portion of a preform and a seal body that opens and closes the blow nozzle. A filling head extends along an axial direction of the blow nozzle and is provided at one end with a liquid supply channel connected to the blow nozzle and with a liquid introduction channel connected to the liquid supply channel from the side. A pressurized liquid supply unit is connected to the liquid introduction channel and supplies a pressurized liquid to the liquid introduction channel. A spiral guide groove is provided around an axial center of the liquid supply channel in an inner peripheral surface of the liquid supply channel.

A generally hollow preform for making a stretch blow-molded container may include a threaded finish portion; a neck portion depending from the finish portion; a transition portion depending from the neck portion; a main portion depending from the transition portion; and a closed, generally rounded tip portion depending from the main portion. The preform may include stretch ratios with respect to the container including an axial stretch ratio of about 3.0 to 3.5, a hoop stretch ratio of about 5.0 to 5.5, and a total stretch ratio of about 15 to 19.25. In some embodiments, high stretch ratios may be achieved with less material, yielding substantial cost savings.

A generally hollow preform for making a stretch blow-molded container may include a threaded finish portion; a neck portion depending from the finish portion; a transition portion depending from the neck portion; a main portion depending from the transition portion; and a closed, generally rounded tip portion depending from the main portion. The preform may include stretch ratios with respect to the container including an axial stretch ratio of about 3.0 to 3.5, a hoop stretch ratio of about 5.0 to 5.5, and a total stretch ratio of about 15 to 19.25. In some embodiments, high stretch ratios may be achieved with less material, yielding substantial cost savings.

This resin-made container is provided with: a neck portion having a content inlet-outlet portion; a lateral surface portion connected to the neck portion; and a bottom portion that is disposed on the side opposite to the neck portion and that is connected to the lateral surface portion. The resin-made container is produced by a stretch blow molding process. The bottom portion has formed therein a bulge section that protrudes downward in the vertical direction. The bulge section is disposed in an eccentric region, of the bottom portion, positioned outside a region demarcated by perpendicularly projecting an opening plane of the inlet-outlet portion of the neck portion.

A polyethylene-based resin composition for injection stretch blow molding may include a copolymer of ethylene and one or more C4-C8 α-olefins. The composition may have a density, according to ASTM D792, that ranges from about 0.946 to 0.960 g/cm.sup.3 and a melt index (15), as measured according to ASTM D 1238 at 190° C. under a 5.0 kg load, ranging from about 5.0 to 50 g/10 min. A method of producing an article may include injection molding the composition to give a preform; and stretch-blowing the preform to provide the article.

To provide a composite preform that can ensure that worsening of the appearance of a surface of a plastic member caused by near-infrared heating prior to blow molding is effectively prevented and that an inner preform is efficiently heated. The composite preform of the present invention includes a preform and a heat-contractive plastic member, the preform including a mouth part; a trunk part linked to the mouth part; and a bottom part linked to the trunk part, and the heat-contractive plastic member being disposed so as to surround the outside of the preform and including at least a colored layer that contains a resin material and a colorant, wherein the heat-contractive plastic member has a near-infrared transmittance of 50% or higher.