| 摘要 |
<p>The invention refers to a preform mold assembly. The assembly comprises a cavity plate; a cavity insert received in a bore in the cavity plate, the cavity insert for forming the body portion of the preform the cavity insert defining at least in part an annular decompression chamber for receiving a supply of cooling fluid from an cooling fluid inlet and an annular film cooling chamber in fluid communication with the annular decompression chamber; the annular film cooling chamber for delivering a flow of cooling fluid received from the annular decompression chamber uniformly along the length of the body portion of the preform. The invention also refers to a method of circulating cooling fluid to cool the body portion of a preform.</p> |
