Protective films for metal, plastic, wood and glass surfaces are generally made of 3-layer polyethylene film. Films for electrical, thermal and environmental insulation, etc. are also made of polyethylene. The range of technical products on offer constitutes an advanced niche sector, where the polyethylene film should be conceived as a “ready-to-use” product, i.e. one that it is laminable on particular materials (glass, aluminium, steel, etc.) and whose level of adhesion can even be modulated, based on the materials in question. In this scenario, each product must be conceived to meet the needs of its specific application.