What is HPL
Decorative High Pressure Laminates (HPL), as defined by the European and international standards for HPL, EN 438 and ISO 4586, are high-density panels (≥1.35g/cm3), finished and ready for use, which have exceptional mechanical, physical strength and chemical resistance, are easy to work and simple to maintain. HPL panels are made of several layers of cellulose fibre material impregnated with thermosetting resins and then simultaneously subjected to both pressure (>7MPa)) and heat (140 / 150°C) in special presses, for a fixed time, which varies depending on the type of laminate. This process creates a stable, inert, homogeneous, nonporous and high density material, with physical and chemical properties that are totally different from those of its original ingredients. In addition, given its very low permeability, HPL acts as a barrier against the possible emission of formaldehyde and other volatile substances (VOCs) from any timber substrates it is applied to.
Composition
HPL panels are made exclusively of cellulose-based materials (60-70%) and thermosetting resins (30-40%).
HPL laminate surfaces are durable, compact and highly impermeable due to the melamine resin they are made from and are not damaged by food and chemicals commonly used in the home; HPL is a thermosetting material and does not react with these substances. It is not subject to corrosion or oxidation and therefore does not require additional protective enamel or varnish. It is hygienic. It represents hostile territory for the proliferation of germs and bacteria and, unlike other materials of synthetic origin, has antistatic properties and therefore does not attract dust. In addition, HPL laminate panels may be of large dimension and are therefore ideal for cladding extensive areas without joints or crevices where dirt could more easily collect. They are therefore particularly suitable in all situations that require maximum hygiene, from kitchens to operating theatres.
Suitable for contact with food
HPL is ideal for convenience, hygiene, durability and ease of cleaning. It also represents a hostile territory for the proliferation of germs and spores and is therefore an ideal material for all applications involving direct contact with food.
Resistance to bacteria
HPL are more hygienic and easier to clean than ordinary furniture finishes. One of the properties of HPL is exceptional resistance to the growth of micro-organisms such as bacteria, moulds and fungi. This quality makes them ideal for applications where hygiene plays an essential role. HPL has a special laminate in its collection with even greater hygienic properties. Silverlam is a biostatic, microbiologically tested laminate, which inhibits bacterial growth and reduces the number of bacteria by 99% in 24 hours. The active ingredient ensuring this level of performance is silver ions.
Reaction to fire In general
HPL laminates have excellent fire performance with low smoke emissions. In the event of fire, they do not catch fire easily (only at very high temperatures) and do not soften or run. The standard grade, however, meets the requirements of Euroclass D.
