By providing a depressed portion 7 in a container main body 1a, forming a thick portion 5a in a covering layer 5 on an edge portion 7b of the depressed portion 7, and forming a thin portion 5b adjacent to the thick portion 5a in the covering layer 5 on a bottom surface 7a side of the depressed portion 7, when a synthetic resin container including a container main body molded into a predetermined container shape and a covering layer laminated on an outer peripheral surface side of the container main body is discarded, the container main body and the covering layer can be easily separated.

A synthetic resin container and method for manufacturing the same, including a container main body molded into a predetermined container shape and a covering layer laminated on an outer peripheral surface side of the container main body. The method includes heating the composite preform to bring the covering material layer into a molten state or a semi-molten state while softening the preform main body to be stretchable, subsequently molding the composite preform into a predetermined container shape by using a blow molding die in which an edge portion formed by providing a step on a cavity inner peripheral surface extends along a predetermined direction, and providing, in the covering material layer to be molded integrally with the preform main body, a thin portion molded by being brought into pressure contact with the edge portion.

To solve a problem associated with formation of a transparent window portion in a biaxially stretch blow molded container by a nozzle structure of an injection molding apparatus, provided is a biaxially stretch blow molded container formed with a clearly transparent window portion in longitudinal strip shape by effectively preventing mixture of colored resin to window portion. Injection molding apparatus includes in nozzle portion a longitudinal groove flow path, wherein a transparent B resin flows. By, for example, reducing and increasing, respectively, the width and depth of the longitudinal groove flow path on the downstream side, and engraving slits in an inner mandrel and even in a front end portion of a stopper pin, flowability of the B resin in a horizontal direction is enhanced.

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 blow mold system including a mold body and a base portion. The mold body includes a central bore extending from a first end of the mold body to a second end of the mold body along a longitudinal axis. The first end is configured to receive a mold preform. The base portion includes a recess, and the base portion is arranged at the second end of the mold body such that the central bore and recess define a blow mold cavity in which a container may be formed from the mold preform. In embodiments, the blow mold system has at least two interchangeable base portions that allow for containers with differently-sized or differently-shaped necks to be formed.

Bag-in-container with a coating layer The invention is in the field of containers for foods and drinks. There is provided a method for applying a coating layer (10, 14, 2, 4) on a preform (1, 2, 7) for a bag-in-container using plasma deposition. There is also provided a preform (1, 2, 7) for a bag-in-container, comprising an inner preform (8) and an outer preform (9) with facing surfaces, wherein at least one of the facing surfaces comprises a coating layer (10, 14, 2, 4) that is applied using plasma deposition.

Container (1) with a coating layer. The invention is in the field of containers for foods and drinks. There is provided a method for applying a coating layer (2, 4) on a preform (1, 2) for a container (1) using plasma deposition. There is also provided a preform (1, 2) for a container (1), as well as a container (1) obtainable by stretching of the preform (1, 2).

A method for manufacturing a resin container includes: a first injection-molding step of injection-molding a bottomed cylindrical resin intermediate molded body; a second injection-molding step of injection-molding a resin material on an outer side of the intermediate molded body to manufacture a multilayered preform having a resin layer laminated on an outer peripheral side of the intermediate molded body; and a blow-molding step of blow-molding the preform to manufacture a resin container having a thick portion.

A multi-shot moulding part structure includes a first structural part, an ink decoration layer, and a second structural part. The first structural part has a first area surface, a second area surface, and a joining surface located on the second area surface. The joining surface is non-parallel to the second area surface. The ink decoration layer is spread on the first area surface and the second area surface, but not on the joining surface. The second structural part is combined with the first structural part and covers the second area surface. The second structural part touches the joining surface. By the second structural part touching the joining surface of the first structural part that is not coated with the ink decoration layer, the structural bonding strength between the first structural part and the second structural part is enhanced.

A preform coating device is provided with: a plurality of rotational holding parts that horizontally hold a preform; a conveyance part that conveys the preform by moving the plurality of rotational holding parts, the plurality of rotational holding parts being disposed at a predetermined interval along the conveyance route of the conveyance part; and a dispenser that discharges a coating liquid toward the preform. The dispenser has: a head including a mechanism for feeding the coating liquid; and a plurality of nozzles that are in fluid communication with the head and that each include a slot for discharging the coating liquid. The plurality of nozzles are disposed at a predetermined interval along the conveyance route. The interval between the plurality of nozzles is equal to the interval between the plurality of rotational holding parts.