发明名称 |
Biaxially stretch blow-molded article and bottom mold therefor |
摘要 |
A bottom mold for molding a biaxially stretch blow-molded article. The bottom mold has a grounding bottom portion and a central inwardly concave dome inside of the grounding bottom portion. The central inwardly concave dome has annular flat walls at different levels from the grounding bottom portion. The annular flat walls are defined by polygons of similar figures. An angle of one of the polygons is aligned along a radial line connecting a bisected point of one side of an adjacent upper or lower polygon and the center of the central inwardly concave dome. The angles of the polygons are the highly stretched areas having a high latitudinal stretch ratio, while the sides of the polygons particularly around the center point, are the moderately stretched areas. The highly and the moderately stretched areas are alternately arranged around the central inwardly concave dome in the circumferential and radial directions.
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申请公布号 |
US5511966(A) |
申请公布日期 |
1996.04.30 |
申请号 |
US19940348809 |
申请日期 |
1994.11.28 |
申请人 |
NISSEI ASB MACHINE CO., LTD. |
发明人 |
MATSUI, TSUYOSHI |
分类号 |
B29C49/06;B29C49/12;B29C49/48;B29C49/54;B65D1/02;(IPC1-7):B29C49/48 |
主分类号 |
B29C49/06 |
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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