11 Mar High Pressure laminate (HPL)
High Pressure Laminate, or HPL, is a direct derivative of genuine plastic laminates. It is considered one of the most durable decorative surface materials and is available with special performance properties including chemicals, fire and wear resistance. Special values of HPL can be formed around curved edges with heat and restraint applications.
HPL is produced by saturating several layers of kraft paper with phenolic resins. A layer of printed decoration paper is placed on top of kraft paper before pressing. The resulting sandwich merges together under heat and pressure (more than 1,000 PSI). Because phenolic resins and melamine are thermoset plastics, the curing process converts resins into plastics by a cross-binding process that converts sheets of paper into single, rigid laminated sheets. Thermosetting creates strong and irreversible bonds that contribute to its durability.
High pressure laminates are laminated to a composite panel that utilizes various adhesives. Particleboard or MDF is the preferred substrate because it provides a stable, durable, consistent and economical base. Because of its durability, high pressure laminates are a common choice for horizontal surfaces including floors, tables and desktops.