发明名称 |
EXTRUDED MICROCELLULAR POLYMER FOAM PIPE ; METHOD OF MAKING AND DIE |
摘要 |
<p>Described is an article a pipe of polymer micro-foam material having an impact strength value measured at 0°C which is higher than 100% and up to 400% of the impact strength as required in the EN-norm of a pipe of the same dimensions and basic material in non-foamed condition. Also are described methods for producing such pipe. Also a die (1) for an extruder is described having, before the slit (2) thereof, a channel (3) which narrows to the slit with an angle alpha between 10 and 180°, preferably 10 and 90°. Further is described an extruder including a die according to the invention.</p> |
申请公布号 |
WO2007017166(A1) |
申请公布日期 |
2007.02.15 |
申请号 |
WO2006EP07629 |
申请日期 |
2006.07.28 |
申请人 |
WAVIN B.V.;OVEREIJNDER, HANS;SCHUURMAN, JOHAN |
发明人 |
OVEREIJNDER, HANS;SCHUURMAN, JOHAN |
分类号 |
C08J9/12;B29C44/34;C08K5/00;C08L27/06 |
主分类号 |
C08J9/12 |
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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