Process for the manufacture of containers which have an integral handle, and containers manufactured thereby

摘要

A process for blow-molding a container, the container comprising a handle, whereby the process comprises the steps of:(i) introducing a preform (2) into a mold cavity and stretching the preform (2) with a stretch rod;(ii) increasing the pressure within the preform (2) so that the preform (2) expands within the mold cavity in a first blowing step, the pressure in the first blowing step is from 1 to 10 bar;(iii) inwardly moving jaws (3, 4) within the mold cavity so that the expanding preform (2) is partially gripped between the jaws in the handle region;(iv) subsequently increasing the pressure within the preform (2) wherein the maximum pressure in the second blowing step is greater than 10 bar, so that the preform (2) expands to the limits of the mold cavity in a second blowing step to form a container;and wherein the inward movement of the jaws (3, 4) is completed within the first blowing step.