公开(公告)号：US3832260A

公开(公告)日：1974-08-27

申请号：US25394372

申请日：1972-05-17

申请人： CFS CORP

发明人： STRAUGHAN C ,  SCHAD C

IPC分类号： B29C44/32 ,  B29C53/52 ,  F16L9/14 ,  B29F1/10

CPC分类号： F16L9/14 ,  B29C44/324 ,  B29C53/52 ,  B29K2023/06 ,  B29K2995/0049 ,  Y10T156/1717 ,  Y10T156/1798

摘要： This invention describes a method of placing a coating of material circumferentially about an extended cylindrical object and holding the material in place by means of a longitudinally folded and sealed plastic film about the long object. The diameter of the resulting plastic cylinder is greater than that of the object, so as to provide sufficient space in the annulus for the coating material. The two edges of the plastic are sealed either by cementing one to the other or by applying a sealing strip over the edges. The coating material is applied into the annulus through a pipe between the object and the film cylinder. By the use of a heat shrinkable plastic film the film can be shrunk to tightly fit the coating material.

公开(公告)号：US3813272A

公开(公告)日：1974-05-28

申请号：US14245271

申请日：1971-05-12

申请人： CFS CORP

发明人： STRAUGHAN C

IPC分类号： B29C51/00 ,  B29C44/32 ,  B29C53/52 ,  B29C63/00 ,  B29C63/06 ,  F16L9/14 ,  B29C24/00

CPC分类号： F16L9/14 ,  B29C44/324 ,  B29C53/52 ,  B29K2023/06 ,  B29K2995/0049 ,  Y10T156/1008 ,  Y10T156/101 ,  Y10T156/1028

摘要： This invention involves the method and apparatus for simultaneously placing a coating of a selected material on the outersurface of an extended cylindrical object such as a pipe or conduit, and holding the coating in position by wrapping the coating with a strip of thin film formed to a cylindrical contour and sealed with a longitudinal seam. This is accomplished by inserting the pipe through a tubular concentric mandrel, wrapping and sealing the plastic film against the mandrel and injecting the coating material through the annular space between the pipe and the mandrel and thus into the space between the pipe and the sealed plastic film. Using heat shrinkable plastic the film forms a tightly fitting cover for the pipe coating material.