The film can also be called extrusion composite or extrusion coating. It is a process in which a molten resin material is cast onto the substrate and quickly pressed and cooled to form.

The membrane composite part is composed of a cooling wheel, a silicone wheel, and a back press roller - a pressing and cooling system.

Cooling roller: According to the different degree of fog, the cooling roller can be divided into mirror, fog and fog three, its diameter in 600mm (low speed machine) and 500mm (high speed machine), according to the production process and processing resin characteristics to choose.

Silicone wheel: also known as silicone wheel, the thickness of the adhesive is usually 25mm, and its hardness is 65-85 Shore degrees. Different processing materials need to choose different hardness of silicone wheels.

Backpressure roller: Its role is to cool the surface of the silicone wheel in production, while maintaining the roundness of the silicone wheel in high-speed operation.