| 摘要 |
A method and apparatus for the production of parts made from plastics material using an injection press in which the mould cavity is defined by a mould surface Sca and the surface Sve of a movable piston. Firstly, the material is introduced into the mould cavity and during injection, the piston is kept stationary for a time to form a rough mould and then retracted to form a parison. Secondly, after injection has been completed the piston is advanced again, and maintained in position while cooling takes place. Thirdly, the mould is opened and the part ejected. |
