A production apparatus of a two-layer preform including an inner layer preform and an outer layer preform includes: an outer layer cavity mold for injection-molding the outer layer preform. A bottom surface of the outer layer cavity mold is provided with a protrusion for separating the inner layer preform disposed in the outer layer cavity mold from the bottom surface.

Preform assembly for blow moulding a container, comprising at least a first and a second perform, wherein the first perform is positioned inside the second perform before blow moulding the performs into the container, wherein each perform has a body forming portion having a wall thickness of less than about 8 millimetres, preferably less than about 6 mm.

An assembled preform (1) is provided for the making of a blown container, comprising a first external preform body (10) which comprises a neck part (2) which has an external region (4) which includes a threaded region (5) and an internal surface (3), and a second internal preform (11) which is suitable to be completely contained within said first external preform body (10), said second internal preform (11) having a neck region (12) suitable to cooperate with said neck internal surface (3) of said first external preform (10), the preform being characterized in that said neck region (12) of said second internal preform (11) comprises locking means (13,14) integrally obtained on the material of said second preform (11) and suitable for cooperating by blocked interference with said internal region (3) of the neck part (2) of said external preform (10) when said second internal preform (11) is inserted in said first external preform (10).

First, a composite preform 70 including a preform 10a and a plastic member 40a in close contact with the outer surface of the preform 10a is made by preparing the preform 10a made of plastic material and arranging the plastic member 40a to surround the outer surface of the preform 10a. Subsequently, the composite preform 70 is heated and inserted in a blow molding die 50 and undergoes blow molding in the blow molding die 50, by which the preform 10a and the plastic member 40a of the composite preform 70 are inflated integrally and a composite container 10A is obtained.

There is provided a system, a method and preform suitable for executing liquid forming of the preform into a final-shaped container. The present technology includes various improvements to methods, apparatuses, and systems for forming final-shaped containers from preforms using a liquid destined to be contained in the final-shaped container.

A method for producing a multiple preform, including a primary injection for injection molding a preform main body using a primary mold, and a secondary injection for injection molding, using a secondary mold, a covering layer that covers the preform main body such that the terminal end side of the covering layer covers the lower surface of the neck ring and reaches the peripheral edge of the neck ring. A projection strip portion is formed when the preform main body is inserted into the secondary mold to be clamped, that projects in a gap in which the covering layer is molded to be in contact with or adjacent to a lower surface of the neck ring, and that extends with a given length along an axis direction, is formed on an inner peripheral surface of the secondary molding mold, thereby forming an easy tear portion in the covering layer.

Article having a body portion including one or more walls surrounding an interior space. The one or more walls have an inner surface, an outer surface, a wall thickness, a transparent portion, and one or more aesthetic regions having oblong voids provided between the inner surface and the outer surface within an outermost 70% of the wall, and the one or more aesthetic regions are provided in a predetermined pattern.

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.

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.

Provided is a method for manufacturing a preform (1). The method includes injecting into a cavity of a mold through the gate: (i) a first colored resin (R1) for a first predetermined time period, and (ii) a second colored resin (R2), having a color different from that of the first colored resin, for a second predetermined time period.