发明名称 |
Apparatus for injection-molding three-layer moldings |
摘要 |
Apparatus of injection molding three-layer moldings, especially bottle blanks with an inner and an outer layer of polyethylene terephthalate and a middle layer of recycled polyethylene terephthalate, employing a mold with several cavities. The material (component A) for the inner and outer layers is supplied through one molten-component conveying channel and the material (component B) for the middle layer through another molten-component conveying channel. The channels are separately heated and their temperatures independently regulated. The melt for component A flows the same distance as the melt for component B. The melts flow into the injection-molding dies such as to ensure a uniform front.
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申请公布号 |
US5894023(A) |
申请公布日期 |
1999.04.13 |
申请号 |
US19960767113 |
申请日期 |
1996.12.04 |
申请人 |
FRIED. KRUPP AG HOESCH-KRUPP |
发明人 |
SCHRAMM, KLAUS;BLANK, MICHAEL |
分类号 |
B29C45/16;B29C45/27;B29C45/28;B29C45/34;(IPC1-7):B29C45/22 |
主分类号 |
B29C45/16 |
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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