POLYTETRAFLUOROETHYLENE TUBE AND MEDICAL TUBE USING THE SAME

Abstract

The present invention provides a thin-walled PTFE tube with appropriate elongation, sufficient strength, and good uniformity during stretching and a medical tube with excellent flexibility and dimensional accuracy. The polytetrafluoroethylene tube according to the present invention is a polytetrafluoroethylene tube having a wall thickness of about 0.04 mm or less, wherein the wetting tension of either of or both outer and inner surfaces of the polytetrafluoroethylene tube is 46 mN/m or more, and in a stress-strain curve obtained by a tensile test performed under an atmosphere of 200°C, tensile stress at 20% strain σ 20 (N/mm 2 ) of the polytetrafluoroethylene tube and tensile stress at 50% strain σ 50 (N/mm 2 ) of the polytetrafluoroethylene tube satisfy 2.0 ≤ 0.1 × σ 20 + 0.3 × σ 50 < 5.5 (Inequality (1)).

Inventors

TAKAHASHI, MASAMICHI
MATSUDA, AYUMI
YOSHIOKA, Koichiro

Assignees

Junkosha Inc.

Dates

Publication Date: 20260506
Application Date: 20230516