Why do you use Slot Die Coating of Hot Melt Adhesive ?
Slot die coating is one of the best methods to coat hot melt adhesive. It is an enclosed process of coating. The molten hot melt adhesive is pumped from the melter through the heated hose to the die.
The coating width and the melt floe index of the adhesive can be varied by changing the shim width and thickness. The advantages of this process are minimum heat loss compared to the other processes. The molten adhesive is never open to the air. Can coat almost all materials like BOPP, PET, Cloth, HDPE fabric, Felt, Paper, Nonwoven, Aluminium foil, etc. Slot die coating allows for accurate and precise coating every time that is essential for mass production products.
Unlike reverse roll, coating slot die coating HM’s can have speeds of up to 150 m/min helping you achieve maximum efficiency and consistency of the product. The coating range in the method can be 15 gsm to 600 gsm depending upon the requirement. A proper Die and Back up roll setting gives even coating along the width. Also the Proper sync with glue pump and substrate speed and constant melting flow of adhesive, gives even coating along the length. High coating speeds or heavier GSMs can be achieved with the high capacity Melting units. This is to ensure the uninterrupted melt flow while coating.
