Daniel John Smith,Nathan Lee Gray,Blair Victor Skelton
申请号：
US11862875
公开号：
US08980036B2
申请日:
2007.09.27
申请国别(地区):
US
年份:
2015
代理人:
摘要：
A thin ribbon spirally wound polymer conduit and method of forming, wherein a helical reinforcing bead is interposed adjacent overlapping layers of ribbon. Further, a method of continuously forming spirally wound conduit wherein a sacrificial layer, preferably having a different base polymer to that of the conduit, is first applied to the former before the conduit is formed overtop.
