Laminate with high pressure High-pressure laminate, or HPL for short, is a decorative laminate. A layer of decor paper that has been impregnated with melamine resin and numerous layers of core paper that have been treated with phenol resin are combined under intense pressure to create the product. The final material is extremely durable, resistant to impacts, temperature-resistant, and hygienic. As a result, HPL is the perfect surface material for applications where high use, durability, and hygiene standards with high design standards are important.