1、December 2012 Translation by DIN-Sprachendienst.English price group 8No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 59.080.30!$W“1929052www.din.deDDIN EN ISO 4920Textile fabrics Determination of resistance to surface wetting (spray test)(ISO 4920:2012);English version EN ISO 4920:2012,English translation of DIN EN ISO 4920:2012-12Textilien Bestimmung der wasserabweisenden Eigenschaften (Sprhverfahren) (ISO 4920
3、:2012);Englische Fassung EN ISO 4920:2012,Englische bersetzung von DIN EN ISO 4920:2012-12toffes Dtermination de la rsistance au mouillage superficiel (essai darrosage)(ISO 4920:2012);Version anglaise EN ISO 4920:2012,Traduction anglaise de DIN EN ISO 4920:2012-12SupersedesDIN EN 24920:1992-08www.be
4、uth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.1211.12 DIN EN ISO 4920:2012-12 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee ISO/TC 38 “Textiles” in collaboration with
5、Technical Committee CEN/TC 248 “Textiles and textile products” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-05-13 AA Textilpflege, Wasser-einwirkung
6、, Knitterverhalten. The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 139 DIN EN ISO 139 ISO 3696 DIN ISO 3696 Amendments This standard differs from DIN EN 24920:1992-08 as follows: a) the standard has been editorially revised; b) Clause
7、3 “Terms and definitions” has been extended to include the definition of “face” (3.1); c) tolerances have been added in Clause 5 “Apparatus and materials” and in the figures; d) Clause 8 “Procedure” has been given in more detail; e) a spray rating scale (including rating 0) is given in a new Clause
8、9 “Evaluation”. Previous editions DIN EN 24920: 1992-08 National Annex NA (informative) Bibliography DIN EN ISO 139, Textiles Standard atmospheres for conditioning and testing DIN ISO 3696, Water for analytical laboratory use Specification and test methods EUROPEAN STANDARD NORME EUROPENNE EUROPISCH
9、E NORM EN ISO 4920 August 2012 ICS 59.080.30 Supersedes EN 24920:1992English Version Textile fabrics - Determination of resistance to surface wetting (spray test) (ISO 4920:2012) toffes - Dtermination de la rsistance au mouillage superficiel (essai darrosage) (ISO 4920:2012) Textilien - Bestimmung d
10、er wasserabweisenden Eigenschaften (Sprhverfahren) (ISO 4920:2012) This European Standard was approved by CEN on 20 April 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard
11、 without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any o
12、ther language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republi
13、c, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN CO
14、MMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 4920:2012: EContents DIN EN ISO
15、 4920:2012-12 EN ISO 4920:2012 (E) 2 Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Principle 4 5 Apparatus and materials .4 6 Conditioning and testing atmospheres .5 7 Test specimens 5 8 Procedure .5 9 Evaluation .6 10 Test report 6 Annex A (normative) ISO photograp
16、hic scale 9 Bibliography 10 Foreword This document (EN ISO 4920:2012) 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. This European Standard shall be given the s
17、tatus of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2013, and conflicting national standards shall be withdrawn at the latest by February 2013. Attention is drawn to the possibility that some of the elements of this document may be th
18、e subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 24920:1992. According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implemen
19、t this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Sl
20、ovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 4920:2012 has been approved by CEN as a EN ISO 4920:2012 without any modification. “DIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 3 1 ScopeThis International Standard specifies a spray test
21、 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.It is not intended for use in predicting the rain-penetration resistance of fabrics, since it does not measure penetration of water
22、through the fabric.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 139,
23、Textiles Standard atmospheres for conditioning and testing3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply.3.1spray ratingmeasure of the resistance of the surface of a fabric to wetting3.2facefabric surface that is intended to be the outer visible s
24、ide in an end product4 PrincipleA 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
25、comparing the appearance of the specimen with descriptive standards and photographs.5 Apparatus and materials5.1 Spray device1), consisting of a funnel of (150 5) mm diameter held vertically, with a metal nozzle (5.2) connected to the end of the stem by rubber tubing of 10 mm bore (see Figure 1).The
26、 distance from the top of the funnel to the bottom of the nozzle is (195 10) mm.1) A similar test method unit consisting of hoop, nozzle, funnel, stand and spray test rating chart is available from the American Association of Textile Chemists and Colorists (AATCC), PO Box 12215, Research Triangle Pa
27、rk, NC 27709-2215 (USA); tel: +1.919.549.8141; fax: +1.919.549-8933; email: ordersaatcc.org. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO.DIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 4 5.2 Metal spray nozzle2), having a convex
28、face with 19 holes of (0,86 0,05) mm diameter (see Figure 2).The holes are distributed over the face of the nozzle. The duration of flow for the specified volume of (250 2) ml of water poured into the funnel shall be between 25 s and 30 s.5.3 Specimen holder, consisting of two wood or metal rings, w
29、hich fit into each other, one of inside diameter (155 5) mm and another of outside diameter (155 5) mm (for example an embroidery hoop), into which the specimen can be secured (see Figure 1).The rings should, when in position for a test, rest on a suitable support so that it is inclined at an angle
30、of 45 with the centre of the test area (150 2) mm below the centre of the face of the spray nozzle.5.4 Water, distilled or fully deionized, at (20 2) C or (27 2) C, or other temperatures, as agreed between interested parties.The temperatures used shall be stated in the test report 10 c)5.5 Graduated
31、 cylinder, 250 ml, class B.6 Conditioning and testing atmospheresConditioning and testing shall be carried out according to ISO 139. If so agreed, conditioning and testing may be carried out in the ambient atmosphere.7 Test specimensTake at least three test specimens, each at least 180 mm square, fr
32、om different places in the fabric so that they represent the material as fully as possible and can be secured by the specimen holder (5.3). Do not take test specimens from places with creases or fold marks.8 Procedure8.1 Condition the test specimens for at least 4 h in the atmosphere defined in Clau
33、se 6.8.2 After conditioning, mount the test specimen securely on the specimen holder (5.3) with the face of the fabric uppermost on the hoop support. Place the holder on the support as specified in 5.3. Unless otherwise stated in the material specification, the specimen shall be orientated so that t
34、he warp, or length, direction is parallel to the flow of water down the specimen.8.3 Pour (250 2) ml of water (5.4) into the funnel (see 5.1) quickly, but steadily so that the spraying shall be continuous once it has commenced. The duration of flow shall be between 25 s and 30 s.8.4 Immediately afte
35、r the spray has ceased, remove the holder with its specimen. Hold the specimen holder (5.3) by the bottom edge, with the plane of the fabric almost horizontal and the fabric face down. Tap the holder smartly against a solid object with the fabric facing the object. Rotate the specimen holder 180 and
36、 tap it smartly once more.8.5 Immediately after tapping, with the specimen still on the holder, rate the degree of wetting of the face of the specimen only, according to Clause 9.8.6 Repeat steps 8.1 through 8.5 for all specimens.2) Suitable metal nozzles are available commercially. Details can be o
37、btained from the ISO Central Secretariat or from the Secretariat of ISO/TC 38/SC 2.DIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 5 9 Evaluation9.1 Assign a rating to each test specimen which best corresponds to the degree of wetting as described in the spray rating scale (9.2) or the photographic spr
38、ay rating standard scale (see Annex A and Figure A.1). Intermediate ratings can be used in increments of 0,5 for a rating corresponding to ISO 1 or AATCC 50, or higher.Photographic standards are not entirely satisfactory for dark-coloured fabrics, for which more reliance should be placed on verbal d
39、escriptions.9.2 The spray rating scale is defined as follows:0 Complete wetting of the entire face of the specimen;1 Complete wetting of the entire specimen face beyond the spray points;2 Partial wetting of the specimen face beyond the spray points;3 Wetting of specimen face at spray points;4 Slight
40、 random sticking or wetting of the specimen face;5 No sticking or wetting of the specimen face.10 Test reportThe test report shall include the following information:a) a reference to this International Standard;b) atmosphere used;c) temperature of the water;d) spray rating for each specimen tested.e
41、) all data needed to identify the sample(s) tested;f) any deviation from the procedure specified.DIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 6 Dimensions in millimetres unless otherwise indicated21345678195 10Key1 funnel2 ring support3 rubber tubing4 spray nozzle5 stand6 specimen7 specimen holder8
42、supportFigure 1 Apparatus for spray testDIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 7 Dimensions in millimetres32(8,8 0,25)491123r=Key1 12 holes (0,86 0,05) on a circle (21 0,5)2 6 holes (0,86 0,05) on a circle (10 0,5)3 1 hole (0,86 0,05) on centreFigure 2 Spray nozzle detailsDIN EN ISO 4920:2012-
43、12 EN ISO 4920:2012 (E) 8 Annex A (normative) ISO photographic scaleThe ISO descriptive rating scale corresponds to the AATCC photographic scale3)as follows:ISO 0 = AATCC 0, ISO 1 = AATCC 50, ISO 2 = AATCC 70, ISO 3 = AATCC 80, ISO 4 = AATCC 90, ISO 5 = AATCC 100100 no sticking or wetting of the spe
44、cimen90 slight random sticking or wetting of the specimen face80 wetting of specimen face at spray points70 partial wetting of the specimen face beyond the spray points50 complete wetting of the entire specimen face beyond the spray points0 complete wetting of the entire face of the specimenColoured
45、 water used for photographic effectFigure A.1 ISO spray test rating chart based on the AATCC photographic scale3) A similar test method unit consisting of hoop, nozzle, funnel, stand and spray test rating chart is available from the American Association of Textile Chemists and Colorists (AATCC), PO
46、Box 12215, Research Triangle Park, NC 27709-2215 (USA); tel: +1.919.549.8141; fax: +1.919.549-8933; email: ordersaatcc.org. This information is given for the convenience of users of this document and does not constitute an endorsement by ISO.DIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 9 Bibliography1 ISO 3696, Water for analytical laboratory use Specification and test methods2 AATCC Test Method 22, Water Repellency: Spray TestDIN EN ISO 4920:2012-12 EN ISO 4920:2012 (E) 10
