| 摘要 |
Apparatus for producing a moulded polystyrene component 13 comprises two mould parts (10, 11) which, in use, are positioned in face- to-face relationship to define a mould cavity corresponding to the component to be moulded. A chamber (13, 14) is associated with each of said mould parts, and each mould part provides communication (15, 16) between the associated chamber and the mould cavity. The mould parts are adapted to define a further chamber (17) surrounding the joint line of the mould cavity, and which is being in communication with the mould cavity and with the exterior of the mould parts. The apparatus enables quicker steam pressure equalisation giving shorter cycle times together with more even steam distribution through the mould cavity resulting in a better moulding. <IMAGE> |
