MANUFACTURING METHOD OF SZ SPACER FOR OPTICAL FIBER CABLE AND SZ SPACER FOR OPTICAL FIBER CABLE OBTAINED BY THE SAME MANUFACTURING METHOD

PROBLEM TO BE SOLVED: To provide an SZ spacer with small groove inclination angle by increasing manufacturing line speed. SOLUTION: Manufacturing equipment is provided with a melting extruder 1, a rotary die 3 of which the rotating direction is alternately reversed is mounted to a cross head part 2 of the melting extruder 1 and a cap 4 having an opening approximately in like figures as the spacer main body which is going to manufacture is mounted on its tip. A cooling device 5 is installed on the downstream of the cap 4 and a cooling tank, a drawing machine and a winding machine, etc. of which the illustration is omitted are arranged on the further downstream of the cooling device 5. A temperature control block 6 which heats, cools melting-like polyethylene resin A and maintains its temperature between 150°C and 200°C is arranged on the outer periphery of the rotary die 3. Piping 8 of a temperature control medium B transmitted from a controller 7 is connected to the temperature control block 6 and an output signal of a temperature sensor 9 which measures the temperature of the rotary die 3 at a non-contact state is inputted in the controller 7. COPYRIGHT: (C)2005,JPO&NCIPI