High speed laser machining for breathable film using multi-pulse repeated radiation and diffractive beam splitter

레이저 멀티 펄스 중첩과 회절광학소자를 이용한 숨쉬는 필름 고속 가공 기술

In this paper, we studied a machining method using a diffractive beam splitter (DBS) and multi- pulse repeated radiation for breathable film. We fabricated micro-grooves on polypropylene (PP) films using multi-pulse radiation and one-shot radiation (radiating pulses at once) and a DBS. In the result, width and depth of the PP film using multi-pulse repeated radiation were more precisely controllable. Therefore, this method can be applicable to in manufacturing breathable film precisely at a high speed.