| 摘要 |
A method and an apparatus 10 for selectively venting air 98 from the internal cavity 94 of a mold 90 . Particularly, the apparatus 90 includes a body 12 having a selectively movable member 30 whose position within the body 12 determines whether the air 98 is vented from the mold 98 . After the air 98 is vented,. The member 30 returns to a normal position in which communication between the internal cavity 94 of the mold 90 and the ambient environment 100 is foreclosed.
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