A tremendous amount of PE and PP films are used in tapes, labels, envelopes, bags, packaging, and lamination markets. These materials are more difficult to bond than many other plastics due to their nature of low surface energies or polarities.

Some chemists believe that to gain good adhesion to low surface energy materials, the pressure sensitive hot melt adhesives used should have low polarities. This perception is coming from the principle of “like–dissolve-like” for mixing chemical substances. However, this principle is not able to describe the adhesion behavior for two dissimilar materials… Read Article>>

How to Adhere Low Surface Energy Substrates
- by Pierce Covert, Glue Machinery Corporation