| 摘要 |
A method for moulding a container having a body and a rim defining an opening for the container uses a preform in the shape of a closed-end tube with an external rim 112 at its mouth, the rim 112 having first 10 and second 11 detents formed on the flange 112. The preform is placed in a pressure moulding apparatus at an elevated temperature with the preform being located in the apparatus at least in part by the second detent 11 and expanded under pressure to form the body of the container and then the first detent 10 is moved downwards and outwards relative to the second detent 11 so that the first detent 10 projects inwards into the opening for the container and the first detent 10 forms an internal rim. |
