BS EN 438-8:2009 pdf download

BS EN 438-8:2009 pdf download.High-pressure decorative laminates(HPL)— Sheets based on thermosetting resins (Usually called Laminates) Part 8: Classification and specifications for design laminates. 

5.2.4 Visual Inspection
52.4.1 General
The following inspection requirements are intended as a general guide. indicating the minimum acceptable quality for laminates. Cut-la-size panels and certain applications invoMng full-size sheets may cal 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 pemiissible spots, dents and simIlar surface. defects
The admissible size of such defects is based on a maximum contamination area equivalent to 1,0 mm’/m’ 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/rn’ of laminate and is proportional to the sheet size under inspection.
The total admissible length of contamination may be concentrated m one defect or d,spersed 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 peariescent laminates are specified in Tables 2 and 3.