As a kind of hot melt adhesive film environmentally fri […]
As a kind of hot melt adhesive film environmentally friendly adhesive with low temperature and low melting point, EVA hot melt adhesive film has irreplaceable advantages in the low temperature composite industry, especially in some sponges and foam products. It has many applications. It has good elasticity. Performance is also a good embodiment of the application in some materials with elastic requirements. However, in some composites, there are requirements for air permeability.
So, what types of air-permeable hot melt adhesive films are there? Everyone knows that hot-melt adhesive net film and perforated hot-melt adhesive film, in addition to satisfying the basic bonding performance, also have good air permeability, EVA hot-melt adhesive film is no exception, it also With perforated hot melt adhesive film or EVA hot melt adhesive film. Although perforated EVA hot melt adhesive film and EVA hot melt adhesive film have good air permeability, in comparison, perforated EVA hot melt adhesive film has better air permeability.
This is because of the air permeability. It involves a concept of porosity. The larger the porosity, the better the air permeability. Obviously, the porosity of the perforated EVA hot melt adhesive film will be higher and the air permeability will be better. Although the perforated EVA hot-melt adhesive film has better air permeability, the EVA hot-melt adhesive film is more widely used.
This is mainly because the perforated EVA hot-melt adhesive film is based on the EVA hot-melt adhesive film with a further punching operation, which increases the production cost, and the EVA hot-melt adhesive film is just the manufacturing process of the adhesive film. It is not the same, but it can be made in only one step. Therefore, the cost of EVA hot-melt reticular membrane will be lower. In daily choices, it is more inclined to suggest that you choose EVA hot-melt reticular membrane.