A method for forming a container with an integral handle includes heating a preform having an integral handle in a first oven, stretching the preform, closing a first mold having a first mold recess and a second mold having a second mold recess around the preform, and blowing air into the preform. A handle pocket wedge block is inserted into a handle pocket of the integral handle of the preform within the first mold and the second mold.

Provided are a blow-molding mold, a bottle blowing machine and a plastic bottle, the blow-molding mold has a mold cavity, where a bottle body, a bottle shoulder, a handle and a bottle neck are formed within the mold cavity after a bottle preform is blown, the bottle shoulder is located between the bottle body and the bottle neck, one end of the handle is connected to the bottle shoulder, the other end of the handle is connected to the bottle shoulder or the bottle neck, and the mold cavity includes a first concave region to have a raised step structure formed on the bottle neck.

Disclosure is a blow molding device for molding a molded article including a cylindrical main body and a shaft protrusion protruding and extending from the main body along an axis direction includes: a pair of mold units configured to move close to and away from each other in a transverse direction with respect to a material supplied downwardly, and coupled to each other to form a main body molding cavity and a shaft protrusion molding cavity for respectively molding the main body and the shaft protrusion; a mold unit actuator configured to drive the mold units to move close to and away from each other; a blower configured to inject molding air into the main body molding cavity; a sliding jig installed to slide in the axis direction through an opening communicating with the shaft protruding molding cavity of the mold unit, and including a pressing surface on one end thereof; and a jig actuator configured to drive the sliding jig so that the pressing surface of the sliding jig can press downwardly the material filled in the shaft protrusion molding cavity. Therefore, the material filled in the shaft protrusion molding cavity is pushed to form the protrusion in the region of the material of the main body corresponding to the shaft protrusion, and thus the material expands by the injection of the molding air, thereby reinforcing the parting line around the shaft protrusion, and forming no groove at the bottom of the axial protrusion. Accordingly, the durability and safety of the molded article as well as the ease and efficiency of the reinforcement are improved.

Provided are a bottle blowing mold, a bottle blowing machine and a plastic bottle, the bottle blowing mold includes a mold cavity, where a bottle body, a bottle shoulder, a handle and a bottle neck are formed within the mold cavity after a bottle preform is blown, the bottle shoulder is located between the bottle body and the bottle neck, one end of the handle is connected to the bottle shoulder, an other end of the handle is connected to the bottle shoulder or the bottle neck, and a cavity wall of the mold cavity is provided with at least one first rib to have a non-closed or annularly closed first groove is formed on the bottle body.

A stretch blow moulding system for PET containers with PET integral handles; the containers blown from injection moulded preforms; each preform having the integral handle projecting from a junction point on a body portion of the preform; containers blown in a continuously rotating stretch blow moulding machine of the system. In a preferred form the preforms are progressed continuously at a substantially constant speed; the containers blown therefrom progress at the same substantially constant speed through to the filling and capping machine; and wherein the containers progress continuously through the filling and capping machine at the same substantially constant speed. Also described is a continuous stretch blow moulding system applied to specified integral handle PET preform and PET blown container structures stretch blown from the preforms thereby to obtain variable wall thickness of the preforms and/or variable wall thickness of the containers.