| 摘要 |
PROBLEM TO BE SOLVED: To prevent abrasion of a switch cock for switching a resin path flown from a resin extruder so as to prevent resin leakage from the switch cock. SOLUTION: This switch portion has a communication tube for communicating with a resin extruder 2 and a resin coloring device 3 for coloring a resin A from the resin extruder 2 to a conductor and is composed of a main body portion 6 forming a cock hole 5 crossing the communication tube 4 and a switch cock 8 turnably provided into slide contact with the cock hole 5. A removable abrasion proof member 7 is disposed between the cock hole 5 and the switch cock 8 to prevent resin leakage. The abrasion proof member 7 is provided around on the inner circumference face of the cock hole 6 and fixed by fixing means. |
