发明名称 |
Method and apparatus for forming a multi-layer preform |
摘要 |
A preform mold assembly for the injection molding of a multi-layer preform for use in the blow molding of container. The preform mold assembly comprises a preform mold having a gate for receiving molten plastic material. The preform mold has a cavity with longitudinal axis and defines an inner surface. A core-pin is situated within the cavity and spaced from said inner surface. A preform cavity is formed between the inner surface of the cavity and the core-pin for receiving molten plastic from the gate. A threadsplit portion is situated within the cavity at a location remote from said gate. The inner surface of the cavity defines a plurality of flutes formed generally parallel to the cavity longitudinal axis and extend longitudinally along the inner surface of the mold to the threadsplit portion. |
申请公布号 |
AU7443396(A) |
申请公布日期 |
1997.04.30 |
申请号 |
AU19960074433 |
申请日期 |
1996.10.11 |
申请人 |
CROWN CORK & SEAL COMPANY, INC. |
发明人 |
FRANK A. RUTTINGER SR. |
分类号 |
B29C33/42;B29C45/16;B29C45/26;B29C49/06;B29C49/22 |
主分类号 |
B29C33/42 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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