Patent ID: 8377352
Filing Date: 2013-02-19
Classification: A61L,A61M,B29C,B29K,B29L

Abstract:
1. A method of producing a medical catheter tube containing a tetrafluoroethylene polymer, the tube having: a wall thickness of less than 0.1 mm; and a tensile strength (S1) as determined at a displacement of 1.0 mm of 5.0 N/mm characterized by molding a composition containing the tetrafluoroethylene polymer and a lubricant, containing a fluorine-containing chemical, and having a boiling point of 100° C. or higher, and wherein the difference (T1−T2) between the interfacial tension (T1) of the tetrafluoroethylene polymer and the interfacial tension (T2) of the lubricant is less than 3.6 dyne/cm., by paste extrusion, and drying by heating at a temperature of the lubricant boiling point or higher.