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December 2010

Highlights of this Bulletin

HPDL vs. LPL Wilsonart International—Technical Services

Overview——High Pressure Decorative Laminates (HPDL)

High Pressure Decorative Laminate (HPDL) and Low Pressure (LPL) products often compete with one another in applications. It is important to understand the benefits and limitations of each when considering application and valueengineering.

High Pressure Decorative Laminate

There are many "product types" or grades

(HPDL) is composed of resin-impregnated

designed with specific performance

kraft paper, decorative paper face material

capabilities. Basic HPDL types include Vertical

and a clear melamine-impregnated overlay.

(VST), Postforming (PFT) and General Purpose

These sheets are

(GST). HPDL types also

bonded at pressures

include chemicalresistant, fire-rated,

greater than 1000

impact and wear

pounds per square

resistant types for high-

inch and

demand applications.

temperatures

Typical nominal

approaching 300 F (149°C). Pressed sheets are trimmed, and then sanded on back to facilitate bonding to suitable substrates such as Particleboard or

thicknesses range from 0.028” to 0.048” (0.71 mm to 1.22 mm), each offering different performance

MDF (Medium Density Fiberboard).

characteristics.

HPDL is available in hundreds of solid

HPDL is commonly used in horizontal and

colors, woodgrains and abstracts with multiple finishes to select from as well.

vertical applications, both commercially and in residences.

Wilsonart International— Technical Services 2400 Wilson Place PO Box 6110 Phone: 254-207-7000 Fax: 254-207-2384 Email: smartline@wilsonart.com

HPDL is used regularly on both horizontal and vertical surfaces, especially in high traffic or high usage areas. Performance and specialty types (like digitally printed laminates) expand the opportunities for use.

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