发明名称 |
Apparatus for high-speed heating and cooling of a polymer structure |
摘要 |
An apparatus and method for heating and cooling a polymer structure employs a tube structure. The tube structure includes a conductive tube and a conductive strip. The tube is composed of a first conductive material having a first electrical resistivity, and the strip is composed of a second conductive material having a second electrical resistivity less than the first resistivity. The strip is connected to only a portion of an outer surface of the tube and extends along a length of the tube. In the method, an impulse of electric current is passed through the tube structure until the strip is heated to a predetermined sealing temperature. The strip and the polymer structure are brought into contact with each other for a dwell time sufficient to generate a heat seal in the polymer structure. A cooling medium is passed through the tube to cool the strip to a predetermined release temperature that facilitates release of the strip from the polymer structure. |
申请公布号 |
AU3640701(A) |
申请公布日期 |
2001.05.30 |
申请号 |
AU20010036407 |
申请日期 |
2000.11.03 |
申请人 |
PACTIV CORPORATION |
发明人 |
WILLIAM P. BELIAS;EDWARD M. BULLARD;ROBERT T. MADDOCK |
分类号 |
B29C65/00;B29C65/22;B29C65/38 |
主分类号 |
B29C65/00 |
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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