수지 필름 두께를 얇게 넣을수록 기공률이 증가하는 경향은 확실하게 보였으나 기공률이 예상했던 것보다 다소 높게 나왔다.
As the thickness of the resin film was thinner, it was clearly seen that the porosity increased, but the porosity was slightly higher than expected.