发明名称 |
PROCESS FOR THE MANUFACTURE OF PET CONTAINERS DESIGNED TO BE FILLED WITH A HOT LIQUID |
摘要 |
A process for the manufacture of a polyethylene terephthalate (PET) container from a hollow amorphous PET preform which includes an open end and a closed end, the open end forming a neck section having dimensions already conformed to its final size and shape, the container being able to withstand relatively severe thermal conditions encountered when the container is filled with a hot liquid, without appreciable deformation, including the steps of: a) rapidly heating only the body of the PET preform, exclusive of the neck section, to a temperature at which subsequent longitudinal and transverse stretching cause no stresses in the PET; b) transferring the hot preform from step (a) to a mold whose walls are maintained at a temperature lower than the temperature of the hot preform body; c) longitudinally stretching the preform body while simultaneously transversely expanding it by blow-molding using a pressurized fluid so as to mold the preform body to the shape of the mold cavity; d) rapidly evacuating the pressurized fluid from the molded container of step (c); and e) removing the container from the mold.
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申请公布号 |
US5145632(A) |
申请公布日期 |
1992.09.08 |
申请号 |
US19900545179 |
申请日期 |
1990.06.28 |
申请人 |
SIDEL |
发明人 |
DENIS, GERARD;RUIS, JEAN-MICHEL;LA BARRE, PAUL |
分类号 |
B29C49/08;B29C49/16;B29C49/18;B29C49/64;B29C49/78;B29K67/00;B29L22/00 |
主分类号 |
B29C49/08 |
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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