Hot Melt Adhesive Gravure Lamination uses an exact pattern of microscopic “dots” of adhesive on the surface of one web of material to bond that web to another web of material to form a composite. For this reason, it is also known as "Dot" Lamination. The materials joined can be the same material, or entirely different types of materials such as nonwovens, films, fabrics, and textile composites.
This is called a "gravure" process because it is similar to the rotogravure printing process. In rotogravure, images including pictures, designs and words are engraved into the printing cylinder. The cylinder picks up ink as it rotates and deposits the ink on the paper web as the paper passes against the cylinder.
In the Hot Melt Adhesive Gravure Lamination process, adhesive is fed into a heated trough until it reaches the optimal viscosity. As the rotating gravure roll contacts the trough, the engraved cavities on the roll are filled with adhesive. A doctor blade seals the trough towards the engraved roll to clean its surface. Adhesive is applied to the receiving web in the pattern of the engraving as the web passes between the gravure roll and a counter roll. The receiving web then contacts the mating web under appropriate temperature and pressure to form the composite.
When designed and managed properly, this laminating process is very precise. The amount of adhesive deposited for each "dot" is very specific and is dependent upon the pattern roll used, the type of adhesive applied, the temperature of the adhesive, and the material onto which the adhesive is deposited.
At Beckmann Converting, we have the technical knowledge and experience to implement Hot Melt Adhesive Gravure Lamination with your products when it is the correct solution.