good day to all,

i have an assignment where i need laser engrave kapton epoxy material. i have used different parameters but the result is either the material become bubbly or the laser puncture through the material. i have a hypothesis that the bubbly effect may have caused by the epoxy because the epoxy will start to react at 180 degree Celsius. can anyone help me to solve this problem to find the correct parameter where it is not too weak that the marking will not take place or too strong where the epoxy start to react?

thank you.