发明名称 |
Polyethylene pipe |
摘要 |
Multi-layered pipe comprising a main layer of polyethylene compound having a resistance to stress cracking NPT measured according to ISO 13479 standard of less than 8000 hours and an internal layer of polyethylene compound having a resistance to stress cracking NPT of higher than 8000 hours, the thickness of the internal layer being between 1 and 25% of the total pipe thickness but not less than 0.3 mm.
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申请公布号 |
US6904940(B2) |
申请公布日期 |
2005.06.14 |
申请号 |
US20030399513 |
申请日期 |
2003.04.17 |
申请人 |
SOLVAY POLYOLEFINS EUROPE-BELGIUM (S.A.) |
发明人 |
SCHEELEN ANDRE;VANDEVIJVER ERIC |
分类号 |
B32B1/08;B32B27/32;F16L9/12;F16L9/133;(IPC1-7):F19L11/00 |
主分类号 |
B32B1/08 |
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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