According to the present invention, in order to improve the productivity of an injection stretch blow molding machine, when a core mold is lifted during mold opening at an injection molding part of the injection stretch blow molding machine, stress is dispersed so as not to concentrate at an area where the thickness changes between a preform opening and a preform body so that the preform body is inhibited from being lifted at a skin layer formed in the area where the thickness changes between the preform opening and the preform body. In a preform (30) where a skin layer (34) at the surface has a lower temperature than a middle layer (35) so as to allow a preform body (32) and a preform bottom (33) to expand and deform from the inside of the preform toward the outside of the preform, the skin layer (34) bridging between the inner surface of the preform body (32) and the inner surface of the preform opening (31) is formed in a tapered shape that opens upward at an outward slant with respect to an extension line (38) of the inner surface of the preform body (32) extending above the skin layer (34) so that, during the lifting of the core mold, the stress exerted from the preform body (32) is dispersed at a stress dispersing plane section (39) formed with the skin layer (34).

A rotating disk-type preform alignment apparatus 1 including a disk 10, which is rotationally driven about a rotation axis tilted from a vertical direction, and a partition wall 28 erected outwardly of the disk, the apparatus being adapted to align preforms 100, which have been supplied onto the disk, at the peripheral edge of the disk and discharge the aligned preforms from a discharge section, the apparatus comprising: pockets 30 arranged side by side in a circumferential direction at the peripheral edge of the disk, each pocket having an opening portion into which the preform is dropped, and each pocket having a holding portion provided on the inner peripheral surface of the opening portion for holding the preform in an upright state; and a gas jetting unit 40, provided outwardly of the disk between a region where the preforms are supplied onto the disk and the discharge section, for jetting a gas from outside the pocket and from below the pocket, wherein the inner peripheral surface of the opening portion of the pocket has a tapered shape imitating the trunk shape of the preform.

A single-layer hollow container includes: a resin composition that is formed of 60 to 90% by mass of polyolefin, 2 to 35% by mass of meta-xylylene group-containing polyamides, and 5 to 30% by mass of modified polyolefin. The meta-xylylene group-containing polyamides are dispersed insularly in the polyolefin, and in a case where each of a vertical length and a horizontal length of the meta-xylylene group-containing polyamide in an initial state is 1, the vertical length of the meta-xylylene group-containing polyamide in the hollow container ranges from 3.3 to 15.8 and the horizontal length ranges from 0.5 to 2.0.

A rotating disk-type preform alignment apparatus 1 including a disk 10, which is rotationally driven about a rotation axis tilted from a vertical direction, and a partition wall 28 erected outwardly of the disk, the apparatus being adapted to align preforms 100, which have been supplied onto the disk, at the peripheral edge of the disk and discharge the aligned preforms from a discharge section, the apparatus comprising: pockets 30 arranged side by side in a circumferential direction at the peripheral edge of the disk, each pocket having an opening portion into which the preform is dropped, and each pocket having a holding portion provided on the inner peripheral surface of the opening portion for holding the preform in an upright state; and a gas jetting unit 40, provided outwardly of the disk between a region where the preforms are supplied onto the disk and the discharge section, for jetting a gas from outside the pocket and from below the pocket, wherein the inner peripheral surface of the opening portion of the pocket has a tapered shape imitating the trunk shape of the preform.

A container is provided with a cylindrical sidewall. A top flange projects from the cylindrical sidewall in a first direction by a first distance. A bottom flange projects from the sidewall in the first direction by a second distance that is less than the first distance. The top flange and the bottom flange extend circumferentially around the sidewall. A gap is formed between the top flange and the bottom flange.

A temperature adjustment mold for adjusting a temperature of an injection-molded bottomed preform made of resin includes: an air introduction member that is inserted into the preform and cools the preform by introducing compressed air from an air supply port into an interior of the preform; a cavity mold that accommodates the preform inside and performs heat exchange in contact with an outer peripheral surface of the preform into which the compressed air has been introduced; and a heating mechanism that heats a first portion of the cavity mold facing the air supply port more than a second portion of the cavity mold located on a downstream side of a flow path of the compressed air than the first portion.

Disclosed herein, amongst other things, is a molded article, such as a preform that is blow moldable to form a container, and a related method of forming and recycling a container. The structure and steps includes injection molding a molded article having tubular body.

A preform for being blow-molded to form a container is provided herein. The preform comprises a finish portion that includes an opening to an interior of the preform and includes a tamper evidence ledge. The tamper evidence ledge cooperates with a tamper-evident ring portion of a cap to indicate that the cap has not been previously loosened after being installed by the manufacturer. A neck portion is disposed adjacent to the tamper evidence ledge. A tapered portion transitions from a diameter of the neck portion to a smaller diameter of a cylindrical portion. The cylindrical portion comprises an elongate member that culminates in an end cap. Threads disposed on the finish portion are configured to threadably receive the cap. A handling valley is disposed between the tamper evidence ledge and the threads. The handling valley enables gripping fingers to engage with and air-convey the container along a manufacturing assembly.

A plastic container having a sidewall defining a chamber and having a first end and a second end and an opening at the first end into the chamber. A base of the container extends from the sidewall and closes the second end, the base having an outer perimeter portion defining a support structure, an axially inwardly extending perimeter wall spaced radially inwardly from the support structure forming an angle with a horizontal line of greater than about 80, a centrally disposed pushup section in the shape of an axially inwardly extending truncated cone, and a toroidal-shaped channel circumscribing and connecting the perimeter wall to the pushup section. The toroidal-shaped channel has a surface that is asymmetrical about a central axis of the container when the container is under static pressure conditions.

A cup-shaped body having an axis of longitudinal extension and defining a mouth and a longitudinally-extended body which is closed at the opposite end from the mouth; the longitudinally-extended body has a conical or frustum-like extension with a diameter that increases progressively from the opposite end toward the mouth, the cup-shaped body having a height extension measured between the mouth and the opposite end, while the mouth has a circular shape with a diameter.

The cup-shaped body has the following features: the ratio between the height extension and diameter is between 0.35 and 1.65; and the ratio between the diameter, measured in millimeters, and the average taper (Cmedia) between the taper of the external surface of the longitudinally-extended body and the taper of the internal surface of the longitudinally-extended body, diameter/Cmedia, is between 0.5 and 1.