DIN EN ISO 4920:2012-12
Title (german) Textilien - Bestimmung der wasserabweisenden Eigenschaften (Sprühverfahren) (ISO 4920:2012); Deutsche Fassung EN ISO 4920:2012
Title (english): Textile fabrics - Determination of resistance to surface wetting (spray test) (ISO 4920:2012); German version EN ISO 4920:2012
Document type: Standard
Publication date: 2012-12
This document (EN ISO 4920:2010) has been prepared by Technical Committee ISO/TC 38 "Textiles", in collaboration with Technical Committee CEN/TC 248 "Textiles and textile products", the secretariat of which is held by BSI (United Kingdom). The responsible German committee is Working Committee NA 062-05-13 AA "Textilpflege, Wassereinwirkung, Knitterverhalten" ("Textile care, water action, crease behaviour") at the Materials Testing Standards Committee (NMP). This standard differs from DIN EN 24920:1992-08 as follows: a) the standard has been editorially revised; b) term "face" has been defined; c) tolerances have been added in clause 5 and in the figures; d) clause 8 has been given in more detail; e) a spray rating scale is given in a new clause 9, rating "0" has been supplemented. This International Standard describes a spray test method for determining the resistance of any fabric, which might or might not have been given a water-resistant or water-repellent finish, to surface wetting by water. The method is not intended for use in predicting the rain-penetration resistance of fabrics, since it does not measure penetration of water through the fabric. A specified volume of distilled or fully deionized water is sprayed on a test specimen that has been mounted on a ring and placed at an angle of 45° so that the centre of the specimen is at a specified distance below the spray nozzle. The spray rating is determined by comparing the appearance of the specimen with descriptive standards and photographs.