摘要 |
<p>The mould arrangement comprises two supports (22) which support movable side portions (24) of a mould and two plenum chambers (50) each associated with one of the supports and movable therewith. Each plenum chamber extends above the mould side portion without obstructing an upwardly-opening entrance (28) to the mould and has one or more exits (60) which communicate with entrances (40) of cooling passages (38) formed in the side portion. Air supplied to the plenum chambers passes through the exits into the cooling passages and serves to cool the side portions.</p> |