UNE EN ISO 4628-2:2016
Paints and varnishes - Evaluation of degradation of coatings - Designation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 2: Assessment of degree of blistering (ISO 4628-2:2016)
Pinturas y barnices. Evaluación de la degradación de los recubrimientos. Designación de la intensidad, cantidad y tamaño de los tipos más comunes de defectos. Parte 2: Evaluación del grado de ampollamiento. (ISO 4628-2:2016).
| Označení normy: | UNE EN ISO 4628-2:2016 |
| Počet stran: | 21 |
| Vydáno: | 2016-07-06 |
| Status: | Norma |
| Počet stran (Španělsky): | 20 |
UNE EN ISO 4628-2:2016
This part of ISO 4628 specifies a method for assessing the degree of blistering of coatings by comparison with pictorial standards. The pictorial standards provided in this part of ISO 4628 illustrate blisters in the sizes 2, 3, 4 and 5, and each size in the quantities (densities) 2, 3, 4 and 5. ISO 4628-1 defines the system used for designating the quantity and size of defects and the intensity of changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing.