| 摘要 |
A method for manufacturing a non self-supporting plastic product comprising a partially closed, inflatable and generally thin-walled container that includes an opening in a wall of greater thickness than the remainder of the container and forming a rigid neck portion, wherein a soft and mouldable plastic material is heated to a plastic state and blow-moulded in a cooled tool by injecting air through said opening from beneath. Blowing is continued through said opening until a final predetermined container shape is obtained in the tool. The blow-moulded container is removed from the tool whilst gripped by an upper and a lower pair of forks disposed at a fixed distance apart. The container is then turned through 180 DEG by means of the pairs of forks whilst maintaining their fixed relationship in a vertical direction. A device carried by a conveyor path is inserted into the opening formed in the rigid neck portion of the container during the moulding process, and caused to grip internally in the opening the grip of the two pairs of forks on the container is released and the container is then caused to cool to a temperature at which the plastic material in the container passes from a plastic state to an elastic state with the container held by and suspended from said device, prior to releasing the container from the device and packaging said container. |
