A pipe system comprises first and second pipes having first and second ends welded together forming a girth-weld and a heat recoverable polymer material comprising a plurality of holes extending therethrough covering the girth-weld. The heat recoverable polymer material can include a surface having an adhesive coated thereon disposed on the girth-weld. Air trapped underneath the recoverable polymer material can be released through the plurality of holes during shrinking of the heat recoverable polymer material. Also, a portion of the adhesive can flow through the holes during a shrinking of the heat recoverable polymer material.
申请公布号
WO2007121223(A3)
申请公布日期
2008.01.03
申请号
WO2007US66400
申请日期
2007.04.11
申请人
3M INNOVATIVE PROPERTIES COMPANY
发明人
NESTEGARD, MARK K.;ANDERSON, MARK T.;MUYRES, DAWN V.;PEREZ, MARIO A.