What is Low Surface Energy (LSE) ?

Low Surface Energy (LSE) refers to materials that have a surface that is difficult for adhesives, including adhesive tapes and double-sided tapes, to bond to effectively.

LSE materials resist the spreading or “wetting out” of adhesives, meaning the adhesive cannot easily make full contact with the surface. This can result in poor adhesion, weak bonding or tape lifting away over time.

Examples of Low Surface Energy Materials

Common LSE materials include:

  • Polypropylene (PP) – used in plastic containers, packaging and automotive components.
  • Polyethylene (PE) – commonly found in plastic films, bottles and containers.
  • PTFE (Teflon) – a non-stick material that is particularly difficult to bond.
  • Silicone – used in seals, rubber components and coated surfaces.

Why is LSE Important When Choosing Adhesive Tape?

Standard adhesive tapes generally bond more effectively to high surface energy materials such as metal and glass. Low surface energy plastics require specially formulated adhesives designed to achieve better wet out and stronger adhesion.

LSE adhesive tapes, including specialist double-sided tapes, are designed to bond to these difficult surfaces, often without needing primers or additional surface treatments.

In simple terms: Low Surface Energy means a surface is difficult to stick to. Choosing an adhesive tape specifically designed for LSE materials helps achieve a stronger, more reliable bond.