DIN Standards Committee Petroleum and Natural Gas Industries
DIN EN ISO 4628-2
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); German version EN ISO 4628-2:2016
Beschichtungsstoffe - Beurteilung von Beschichtungsschäden - Bewertung der Menge und der Größe von Schäden und der Intensität von gleichmäßigen Veränderungen im Aussehen - Teil 2: Bewertung des Blasengrades (ISO 4628-2:2016); Deutsche Fassung EN ISO 4628-2:2016
Overview
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. The responsible German standardization committee is Working Committee NA 002-00-07 AA "Allgemeine Prüfverfahren für Beschichtungsstoffe und Beschichtungen" ("General test methods for coating materials and coatings") at DIN Standards Committee Coatings and Coating Materials (NAB).
Document: references other documents
Document: referenced in other documents
Responsible national committee
NA 002-00-07 AA - General test methods for coating materials and coatings
Responsible european committee
CEN/TC 139 - Paints and varnishes
