公开(公告)号：US20190154186A1

公开(公告)日：2019-05-23

申请号：US16260878

申请日：2019-01-29

申请人： SHAWCOR LTD.

发明人： Roberto Varagnolo ,  Marcos Mockel ,  Catherine Lam ,  Dennis Wong

IPC分类号： F16L59/02 ,  C08J9/228 ,  B29C48/00 ,  B29C48/151 ,  C08J9/32 ,  F16L59/14

摘要： A method of providing a foamed insulation coating on at least a portion of a pipe, including extruding a melt stream over the pipe portion. The melt stream includes a matrix polymer and expandable fillers in an unexpanded state, the melt stream being maintained at a sufficiently high temperature to maintain the matrix polymer in extrudable form and at a sufficiently high pressure to maintain the expandable fillers in the unexpanded state. Once extruded, the expandable fillers are permitted to expand into an expanded state at a lower pressure.

公开(公告)号：US10234068B2

公开(公告)日：2019-03-19

申请号：US15132568

申请日：2016-04-19

申请人： SHAWCOR LTD.

发明人： Roberto Varagnolo ,  Marcos Mockel ,  Catherine Lam ,  Dennis Wong

IPC分类号： F16L59/02 ,  C08J9/228 ,  B29C47/00 ,  B29C47/02 ,  F16L59/14 ,  C08J9/32 ,  B29K105/04 ,  B29L23/00 ,  B29C47/92

摘要： A method of providing a foamed insulation coating on at least a portion of a pipe, including extruding a melt stream over the pipe portion. The melt stream includes a matrix polymer and expandable fillers in an unexpanded state, the melt stream being maintained at a sufficiently high temperature to maintain the matrix polymer in extrudable form and at a sufficiently high pressure to maintain the expandable fillers in the unexpanded state. Once extruded, the expandable fillers are permitted to expand into an expanded state at a lower pressure.