| 摘要 |
PROBLEM TO BE SOLVED: To provide a tube for a roller pump capable of easily discriminating a degree of torsion of the tube and efficiently preventing torsion of the tube. SOLUTION: This tube is a device to transport chemicals, waste ink, etc., by using bendable tube 1 to a roller pump, and a black torsional installation preventive mark 7 is molded simultaneously in two colors in a continued line shape in the inside longitudinal direction of a peripheral wall of the transparent tube 1. Consequently, in the case when a worker installs the long and slender tube 1 on a small tube presser, the torsional installation preventive mark 7 to be a discrimination standard is molded on the tube 1, and accordingly, it is possible to correct torsion with the torsional installation preventive mark 7 as a marker even if the tube 1 distorted.
|
