BS EN 438-8:2009 pdf free download – High-pressure decorative laminates (HPL)一Sheets based on thermosetting resins (Usually called I saminates) Part 8: Classification and specifications for design laminates.
5.2.4 Visual inspection
5.2.4.1 General
The following inspection requirements are intended as a general guide, indicating the minimum acceptable quality for laminates. Cut-to-size panels and certain applications involving full-size sheets may call for special quality requirements which can be negotiated between supplier and purchaser; in such cases the following requirements may be used as a basis for agreement. Only a small percentage of sheets in a batch (the level to be agreed with the customer) shall contain defects of the minimum acceptable level.
5.2.4.2 Surface quality
The following surface defects are permissible:
Dirt, spots, dents and similar surface defects
The admissible size of such defects is based on a maximum contamination area equivalent to 1,0 mm2/m2 of laminate and is proportional to the sheet size under inspection.
The total admissible area of contamination may be concentrated in one spot or dispersed over an unlimited amount of smaller defects.
Fibres, hairs and scratches
The admissible size of defects is based on a maximum contamination length equivalent to 10 mm/m2 of laminate and is proportional to the sheet size under inspection.
The total admissible length of contamination may be concentrated in one defect or dispersed over an unlimited amount of smaller defects.
5.2.4.3 Edge quality
Visual defects (e.g. moisture marks, lack of gloss, corner damage) can be present on all four edges of the laminate, providing the defect-free length and width are at least the nominal size minus 20 mm.
5.3 Dimensional tolerance requirements
5.3.1 Dimensional tolerance requirements for pearlescent laminates
Dimensional tolerance requirements for pearlescent laminates are specified in Tables 2 and 3.
5.4.5 Notes on requirements for reaction to fire
The requirements for reaction to fire are determined by the fire regulations of the country in which the material is to be used.
In Europe, laminate panels intended for construction applications are tested in accordance with EN 13823 [1] (SBI test) and EN ISO 11925-2 [2] (Small-burner test), and the resulting reaction-to-fire performance is expressed in accordance with EN 13501-1 [3].
For applications other than construction, fire test methods and performance requirements may vary from one country to another, and at present it is not possible, with any test, to predict compliance with all national and other requirements.
All the products covered by this part of EN 438 will have different reaction to fire performance depending on the composition and/or decorative surfaces. Reaction to fire will also depend on laminate thickness and construction of the element, substrate type and thickness, and adhesive used. The laminate manufacturer should be contacted for information on fire test methods, classifications and fire certification.
No fire performance test is therefore included in this part of EN 438.