Breathable laminated backsheet

Breathable laminated backsheet, also known as composite film, is a polymer material composed of two or more layers of films of different materials, mainly used for packaging. In actual use, the breathable composite film will use a film slitting machine to cut the wide-width film raw material into narrow-width films of different widths according to the different sizes of the packaging. In the related art, the film slitting machine includes a frame on which guide rollers and take-up rollers are rotated respectively, and there are multiple take-up rollers, and a blade holder for cutting the film is also fixedly arranged on the frame, and the blade holder There is a blade on the top, the blade is located between the guide roller and the winding roller, the film is transported by the guide roller, and then cut into multiple parts by the blade, and then wound on different winding rollers, when it is necessary to cut films of different widths , The operator probes into the middle of the film slitting machine with his hand, and manually adjusts the position of the blade.