High pressure laminates – Production process
High pressure laminates – Production process

High pressure laminates – Production process

High-pressure decorative laminate(s) (HPL)

Sheet(s) consisting of decorative surface layer(s) and core layers bonded together by a high

pressure Process. Typical values for the high pressure process are a temperature of ≥ 120 °C and a

pressure of ≥ 5 MPa.

Surface layer

upper decorative layer consisting in one or more sheets of fibrous material (usually paper)

impregnated with aminoplastic thermosetting resins (usually melamine based resins) or other curable

resins or other decorative design surfaces such as metal foils, wood-veneers and textiles, etc. which

are not necessarily treated with thermosetting resin The surface layers can appear on one or both

side(s) of the laminate(s). In case of one-sided laminates, the back of the sheet(s) may be made

suitable for adhesive bonding to a substrate.

Core layer

Core layer consisting of fibrous materials (usually paper) impregnated with thermosetting resins

(usually phenolic based resins) or other curable resins, eventually reinforced by metal layer(s) or

metal mesh(es) and others which are not necessarily treated with thermosetting resin.

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