发明名称 |
Condensation injection molding process for producing bottle preforms of polyethylene terephthalate and/or its copolyesters and preforms producable in accordance with this process |
摘要 |
<p>A process for producing bottle preforms from the melt of polyethylene terephthalate and/or its copolyesters, includes selectively introducing an inert gas into the continuous flow or partial flow of the polyester melt from a poly-condensation having an intrinsic viscosity between 0.5 and 0.75 dl/g, subsequently bringing the melt to an acetaldehyde content below 10 ppm in a melt after-condensation reactor and to an intrinsic viscosity of 0.75 to 0.95 dl/g and thereafter guiding the melt into an injection molding tool and processing same.</p> |
申请公布号 |
AU4561396(A) |
申请公布日期 |
1996.08.29 |
申请号 |
AU19960045613 |
申请日期 |
1996.02.20 |
申请人 |
EMS-INVENTA AG |
发明人 |
WERNER STIBAL;WERNER KAGI;JOACHIM ENSINGER;KLAUS NOTHHELFER |
分类号 |
B29B11/08;B29C45/00;B29C49/06;B29K67/00;C08G63/88 |
主分类号 |
B29B11/08 |
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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