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This standard classifies decorative laminated sheets (HPL) according to their performance and main recommended fields of application, and provides also for materials of special characteristics, for example postformability of defined reaction to fire. Requirements are specified for those types of materials that are most generally used, but additional types may be added as required. The limit values specified apply to the most commonly used types of materials, but within each classification, it may be possible to obtain variants having much higher performance figures. These materials are characterized by their decorative surfaces, which are relatively hard and resistant to wear, scratching, impact, boling water, domestic stains and moderate heat. They are intended for interior applications as follows: -- Thin single-faced laminates usually less than 2 mm thick, for bonding to a substrate. -- Compact laminates, single or double-faced, approximately 2 mm to 5 mm thick, which need to be rigidly supported without necessarily being bonded to a substrate. -- Compact laminates, self-supporting, double-faced, usually thicker than 5 mm, the thickness of which will be selected according to application and panel dimensions. The black surface of sheets having only one decorative face is made suitable for adhesive bonding to a substrate. This standard applies only to decorative laminated sheets as defined in clause 3. The second part of the standard specifies the methods of test.