发明名称 |
Device for shaping plastic objects under inert atmosphere |
摘要 |
The invention relates to a device for producing plastic articles by forming them in an inert atmosphere, the device comprising a hopper, a feed screw and means for forming the polymer melt. The device for injecting inert gas comprises a gas feed pipe, a gas injection surface near the wall of the hopper and a homogenization chamber fitted between the wall of the hopper and the gas feed pipe. That end of the gas feed pipe which is directed towards the injection surface is closed and has at least one radial opening O allowing the gas to be ejected at right angles to its direction of flow in the pipe.
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申请公布号 |
US7147460(B2) |
申请公布日期 |
2006.12.12 |
申请号 |
US20030363516 |
申请日期 |
2003.07.14 |
申请人 |
L'AIR LIQUIDE, SOCIETE ANONYME A DIRECTOIRE ET CONSEIL DE SURVEILLANCE POUR L'ETUDE ET, L'EXPLOITATION DES PROCEDES GEORGES CLAUDE |
发明人 |
NEGRO OLIVIER;DICK SAMI;LETURMY MARC;MELEN STEPHANE |
分类号 |
B29C35/04;B29C45/17;B29C45/18;B29C47/10 |
主分类号 |
B29C35/04 |
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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