<p>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.</p>
申请公布号
WO0234513(A1)
申请公布日期
2002.05.02
申请号
WO2001EP11927
申请日期
2001.10.16
申请人
SOLVAY POLYOLEFINS EUROPE - BELGIUM (SOCIETE ANONYME);SCHEELEN, ANDRE;VANDEVIJVER, ERIC