Device for manufacturing breathable film by using laser and method for manufacturing same

A method of fabricating a gas-penetration film which irradiates a pulsed laser beam onto a moving film to continuously process grooves, the method comprising:

• causing the pulsed laser beam to be incident onto a diffractive optical element to split the pulsed laser beam;
• collecting the pulsed laser beams which are split through a lens unit and vertically irradiating the pulsed laser beam onto the moving film at a constant interval to process a groove;
• and
• moving the moving film so as to repeatedly process a groove which is adjacent to the groove processed by the split pulsed laser beam, by the pulsed laser beam.

An laser apparatus of fabricating a gas-penetration film which irradiates a pulsed laser beam onto a moving film to form continuous grooves, the apparatus comprising:

• a diffractive optical element which splits an incident pulsed laser beam as many as the maximum number of groove processings which are repeatedly performed on the same groove;
• a lens unit which collects the split pulsed laser beam to vertically irradiate the pulsed laser beam onto the moving film at a constant interval;
• and
• a controller which controls a movement speed of the moving film so as to repeatedly process a groove which is adjacent to the groove processed by the split pulsed laser beam, by the pulsed laser beam.