Applicable Base Polymer Properties
Polyolefins are generally not thought of as adhesives because as a substrate they are so hard to bond. However, polyolefin resins make excellent hot melt adhesives because they do have a low surface energy and wet most polymeric and metallic substrates.
Adhesives that are based on polyolefin resins are used mainly as hot melt adhesives in either block or film form. In film form, they provide excellent peel strength as a hot laminating adhesive for plastic films and metallic foils. Polyethylene adhesive films are also used in extrusion coating. In this application a ply of polyethylene is extruded onto a structure to provide a heat sealing medium for later bonding.