Preparation method of acoustic breathable protective film

The invention provides a preparation method of an acoustic breathable protective film, wherein the preparation method comprises the following steps: heating, pressurizing and compounding a thermosetting adhesive and a support film to obtain a first composite film, cutting an inner hole in the first composite film by using laser equipment, and heating, pressurizing and compounding the first composite film with the inner hole and a breathable film to obtain the acoustic breathable protective film. According to the preparation method of the acoustic breathable protective film, the acoustic breathable protective film with a particle protection effect can be prepared, and the acoustic breathable protective film is good in breathability, high in particle isolation degree, small in damage to sound, simple in preparation process, low in cost, high in yield and wide in market prospect. 本发明提供了一种声学透气防护膜的制备方法，包括以下步骤：将热固胶与支撑膜加热加压复合，得到第一复合膜，使用激光设备在第一复合膜上切割内孔，将带有内孔的第一复合膜与透气膜加热加压复合，得到声学透气防护膜。本发明所述的声学透气防护膜的制备方法能够制备具有颗粒防护作用的声学