High Pressure
Laminate (HPL)
High pressure laminate is the direct descendent of the original plastic laminate.
What is High Pressure Laminate (HPL)?
It is considered one of the most durable decorative surface materials and is available with unique performance properties, including chemical, fire, and wear resistance.

Special grades of HPL can be postformed around curved edges by applying heat and restraint. HPL is laminated to a panel utilizing various adhesives.
Particleboard or MDF are the preferred substrates because they provide a stable, durable, consistent, and economical foundation.
How It's Made
HPL is produced by saturating multiple layers of kraft paper with phenolic resin. Before pressing, a layer of printed décor paper is placed on top of the kraft paper. The resulting sandwich is fused under heat and pressure (over 1,000 PSI). Because phenolic and melamine resins are thermoset plastics, the curing process transforms the resin into plastic by a cross-linking process that converts the paper sheets into a single, rigid, laminated sheet. Thermo-setting creates strong, irreversible bonds that contribute to HPL’s durability.


Attributes
A relatively new development in HPL technology is the Double Belt Press (DBP) for producing Continuous Pressed Laminate (CPL). CPL is decorative paper impregnated with resins and fused under heat and high pressure with resin-impregnated backer(s). Laminate properties are similar to standard HPL; the typical thickness range is .4 mm to 1mm. CPL is available in desired sheet lengths or continuous rolls.
Flexible CPL is decorative paper impregnated with flexible thermosetting resins and fused under heat and high pressure with resin-impregnated backer(s). This engineered CPL offers a unique range of formable decorative laminates suitable for profile wrapping and edgebanding applications.
The common thickness range is .2 mm through .4 mm. Surface properties are similar to vertical-grade HPL and are used significantly to complement HPL and TFL laminates.
There are many types or grades of high pressure laminates engineered for specific performance requirements.
- General Purpose : Most widely used HPL. Suitable for horizontal and vertical surface applications. Typical thickness range from 0.028" to 0.048" (0.71 to 1.22 mm).
- Postforming : Can be formed around curved edges by application of heat and restraint. Maximum thickness is approximately 0.038" (0.97 mm) and can normally be formed to radii as small as 3/8" (9.5 mm).
- Backer : HPL produced without a decorative face. Available as standard (most common; slightly thinner than decorative HPL) or regrind (reclaimed HPL with decorative sheet sanded off).
- Special Products : Special purpose high pressure laminates include cabinet liners, high-wear, fire-rated, electrostatic dissipative and chemical resistant laminates.
In addition to aesthetic attributes, the lamination of particleboard or MDF with HPL can improve the substrate’s physical performance. For example, a shelf of 3/4″ industrial (M-2) particleboard that is 24″ long will carry 45 lbs. per square foot (psf) of uniform loading with 0.133″ deflection. If overlaid with HPL, the same shelf can hold 85 lbs psf before reaching the same deflection.
HPL Applications
High pressure laminate is considered one of the most durable decorative surface materials. It performs well in both horizontal and vertical applications, appearing in furniture, cabinetry, flooring, and wall treatments.
HPL is durable and, therefore, well-suited for surfaces in high-traffic areas in the home, as well as retail, corporate, and hospitality settings. It is often utilized on both vertical and horizontal surfaces in hospitals and clinics.
The nature of HPL also allows it to be postformed. The technology has evolved to include a variety of premium edge treatments with ogees and multiple radiuses that mimic more expensive stone installations.
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