The shoe manufacturing process is complicated. There are many types of upper materials involved, involving leather, artificial leather, cloth, etc., involving various types of hot melt adhesive film and hot melt adhesive retinal products. In the past, white glue was usually used to compound shoe materials, which could not meet environmental requirements. At present, the shoe material industry has widely used the hot-melt adhesive film process to replace traditional glue. The production process can be seamlessly connected, and the equipment does not need to be changed.
EVA hot-melt adhesive film is often used for upper surface composites, and EVA-free hot melt adhesive film is used according to process requirements. The thickness of the adhesive film used in the composite hot-melt adhesive film on the upper surface is usually 10-15 wires. This not only achieves good adhesion strength, but also makes the surface of the upper surface firmer to achieve the effect of shaping.
