Method for preparing a multi-layer metal tube
AssigneeITT Manufacturing Enterprises, Inc.
InventorsJoseph A. Duvall, Kevin E. Nicholls
Life of this patent
Estimating the term…
Abstract
A method for preparing a multi-layer metal tube, comprises the steps of breaking the adhesion between at least a portion of a polymeric layer and an outer surface circumference of a metal tube having a corrosion resistant layer applied thereto, thereby causing the polymeric layer portion to retract and loosely adhere to a non-retracted polymeric layer adjacent the polymeric layer portion; and mechanically removing the retracted portion of the polymetric layer while leaving the corrosion resistant layer intact. An apparatus for achieving the mechanical removal is also disclosed.
Claims24
A method for preparing a multi-layer metal tube, comprising the steps of:
- rotating at least one stripper roll about an axis of rotation to be in engagement with the multi-layer metal tube for breaking the adhesion between at least a portion of a polymeric layer and an outer surface circumference of a metal tube having a corrosion resistant layer applied thereto to cause the polymeric layer portion to retract until only loosely adhered to a non-retracted polymeric layer portion adjacent the retracted portion of the polymeric layer;
- and
- rotating at least one removal roll about a common axis with the axis of rotation of the corresponding stripper roll for mechanically removing the retracted portion of the polymeric layer while leaving the corrosion resistant layer intact.
A method for preparing a multi-layer metal tube, comprising the steps of:
- rotating at least one stripper roll about an axis of rotation to be in engagement with the multi-layer metal tube for breaking the adhesion between at least a portion of a polymeric layer and an outer surface circumference of a metal tube to cause the polymeric layer portion to retract until only loosely adhered to a non-retracted polymeric layer portion adjacent the retracted portion of the polymeric layer;
- and
- rotating at least one removal roll about a common axis with the axis of rotation of the corresponding stripper roll for mechanically removing the retracted portion of the polymeric layer while leaving the metal tube outer surface undamaged.
A method for preparing a multi-layer metal tube comprising the steps of:
- rotating at least one stripper roll about an axis of rotation parallel to and offset from a longitudinal axis of the metal tube being processed, the stripper roll in engagement with the multi-layer metal tube for breaking the adhesion between at least a portion of a polymeric layer and an outer surface circumference of a metal tube to cause the polymeric layer portion to retract until only loosely adhered to a non-retracted polymeric layer portion adjacent the retracted portion of the polymeric layer;
- and
- rotating at least one removal roll about an axis of rotation parallel to and offset from the longitudinal axis of the metal tube being processed for mechanically removing the retracted portion of the polymeric layer.
Dependencies are inferred from the claim text.