Plastic could only use CO2 laser source, with wave length 10.6um, could not use flexible fiber transmit laser.Two solutions when material stays and laser head moves：
A. Laser source doesn’t move, lead laser into cutting head by outside light link, high precise robot drives cutting head move to fulfill cutting function.
B. Use heavy load robot to carry on CO2 laser source, power is usually less than 200w. In order to increase accuracy, add a small XY axle to drive cutting head.