Abstract: 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.

Abstract: 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.

Abstract: Provided is a synthetic resin container that includes 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. A label is mounted on a container body portion. The container main body is provided with a step portion formed by raising or denting a peripheral surface that extends continuously or discontinuously along a predetermined direction and the covering layer is provided with, continuously or discontinuously along the step portion, a linear thin portion that is linearly thinner than a surrounding area. At least part of the label is adhered to a portion of the covering layer adjacent to the linear thin portion.