发明名称 |
Method of forming container with high-crystallinity sidewall and low-crystallinity base |
摘要 |
A method of making a polyester container having an enhanced level of crystallinity in the sidewall while maintaining a low level of crystallinity in a thickened base portion. The container is particularly useful as a refillable container which can withstand higher caustic wash temperatures and exhibits reduced flavor carryover, or as a hot-fill container. According to the method, a sidewall-forming section of a preform is initially expanded, heated to contract and crystallize the same, and than reexpanded; a base-forming portion of the preform is shielded from the heat treatment and is expanded either before or after the heat treatment step.
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申请公布号 |
US2002150703(A1) |
申请公布日期 |
2002.10.17 |
申请号 |
US20020122297 |
申请日期 |
2002.04.16 |
申请人 |
CONTINENTAL PET TECHNOLOGIES, INC. |
发明人 |
COLLETTE WAYNE N.;KRISHNAKUMAR SUPPAYAN M.;LIN CHI CHING |
分类号 |
B29C35/08;B29C49/00;B29C49/06;B29C49/12;B29C49/18;B29C49/22;B29C49/48;B29C49/54;B29C49/64;B29C61/02;B65D1/00;B65D1/02;(IPC1-7):B32B1/02 |
主分类号 |
B29C35/08 |
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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