发明名称 |
METHOD OF COOLING THERMOFORMED ARTICLES |
摘要 |
Cooling fluid, such as liquid carbon dioxide, is introduced into thermoformed articles to aid in cooling. A pressure switch in the blowing fluid conduit introduces the cooling fluid when the pressure of the blowing fluid reaches a first value and stops flow of the cooling fluid when a second higher pressure is reached.
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申请公布号 |
US3666849(A) |
申请公布日期 |
1972.05.30 |
申请号 |
USD3666849 |
申请日期 |
1970.04.03 |
申请人 |
PHILLIPS PETROLEUM CO. |
发明人 |
GEORGE E. WILLIAMS;EDWARD C. HELD JR. |
分类号 |
B29C35/16;B29C49/66;(IPC1-7):B29C17/07 |
主分类号 |
B29C35/16 |
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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