1、BRITISH STANDARD BS3424-36: 1993 Testing coated fabrics Part 36: Method39. Method for determination of the dimensional stability of coated fabrics to domestic washing IMPORTANT NOTE. It is recommended that this Part be read in conjunctionwith the information in Part0 “Foreword and general introducti
2、on”.BS3424-36:1993 This British Standard, having been prepared under the directionof the Plasticsand Rubber Standards Policy Committee, waspublished underthe authorityof the Standards Boardand comes intoeffect on 15June1993 BSI 06-1999 The following BSI references relate to the work on this standard
3、: Committee reference PRM/78 Draft for comment 91/46482 DC ISBN 0 580 21744 2 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Plastics and Rubber Standards Policy Committee (PRM/-) to Technical Committee PRM/78, upon which the following
4、bodies were represented: British Nonwovens Manufacturers Association British Plastics Federation British Railways Board British Resin Manufacturers Association British Rubber Manufacturers Association Ltd. British Textile Confederation British Textile Technology Group Department of Health Department
5、 of the Environment (Building Research Establishment) Electricity Industry in United Kingdom Furniture Industry Research Association Home Office Industrial Safety (Protective Equipment) Manufacturers Association London Regional Transport Made-Up Textiles Association Ministry of Defence National Unio
6、n of Dyers, Bleachers and Textile Workers (NUDBTW) RAPRA Technology Ltd. SATRA Footwear Technology Centre Society of Motor Manufacturers and Traders Ltd. The following body was also represented in the drafting of the standard, through subcommittees and panels: Ministry of Defence Amendments issued s
7、ince publication Amd. No. Date CommentsBS3424-36:1993 BSI 06-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 References 1 3 Definition 1 4 Principle 1 5 Apparatus 1 6 Sampling, selection and preparation of test specimens 2 7 Conditioning and marking 2 8 Procedu
8、re 2 9 Test report 2 Figure 1 Scheme for the selection of test specimens 3 Table 1 Parameters for domestic type washing machine and suitable wash programme for the test 1 Table 2 Nominal composition of ECE reference detergent (without optical brightener) 2 List of references Inside back coverBS3424-
9、36:1993 ii BSI 06-1999 Foreword This Part of BS3424 has been prepared under the direction of the Plastics and Rubber Standards Policy Committee. In preparing this Part of BS3424 it has been acknowledged that many coated fabric products are washed in domestic-type washing machines and also that the m
10、ain washing criteria affecting dimensional stability could be achieved without necessarily invoking the full requirements of BS4923. This method of test, whilst intended primarily for assessing the dimensional stability to washing may also be used in conjunction with ageing tests for the removal of
11、hydrolysed residues where these may be present. However, colour fastness to washing tests should be conducted in accordance with BS1006-C02. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct applica
12、tion. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright date) a
13、nd may have had amendments incorporated. This will be indicated in the amendment table on theinside front cover.BS3424-36:1993 BSI 06-1999 1 1 Scope This Part of BS3424 describes a method for determining the dimensional stability of coated fabrics to washing using a commercial domestic type washing
14、machine. 2 References 2.1 Normative references This Part of BS3424 incorporates, by reference, provisions from specific editions of other publications. These normative references are cited at the appropriate points in the text and the publications are listed on the inside back page. Subsequent amend
15、ments to, or revisions of, any of these publications apply to this Part of BS3424 only when incorporated in it by updating or revision. 2.2 Informative references This Part of BS3424 refers to other publications that provide information or guidance. Editions of these publications current at the time
16、 of issue of this standard are listed on the inside back page, but reference should be made to the latest editions. 3 Definition For the purposes of this Part of BS3424 the following definition applies. delamination the partial or whole separation of two, or more, of the component layers of a coated
17、 fabric. This can be either a fabric to polymer separation or a separation within the actual polymeric layer NOTESee6.3 of BS3424-9:1990. 4 Principle Five test specimens are conditioned and marked with dimension datum lines in accordance with BS4931:1986. They are then subjected to three consecutive
18、 domestic washing procedures, using standard criteria, after which they are dried, pre-conditioned and conditioned prior to the dimensions of the datums being determined and the dimensional stability calculated. 5 Apparatus 5.1 Washing machine and wash programme conforming to Table 1. 5.2 Detergent
19、conforming to Table 2. Table 1 Parameters for domestic type washing machine and suitable washprogrammeforthe test Parameter Value or number Internal drum axis Horizontal (i.efront loading) Internal drum capacity volume 44liters Lifting vanes 3 120 of height5.0cm 0.5cm Drum speed during normal wash 5
20、5r/min 3r/min Typical drum agitator action during normal wash rotation min.11s clockwise min.3s stop min.11s anti-clockwise min.3s stop Minimum duration of normal wash cycle 25mins Number of rinse cycles Three Minimum duration of each rinse cycle 1min Total dry load 4.0kg 0.1kg including makeweights
21、 (see5.3) Minimum liquor ratio 4.4 l/kg Spin speed 1 000r/min 20r/min Minimum mean temperature of water supply 15 C Wash details total number of cycles (including washing and rinsing) Three continuous washing cycles using detergent without removal from machine Temperature of wash max.40 CBS3424-36:1
22、993 2 BSI 06-1999 Table 2 Nominal composition of ECE reference detergent (without optical brightener) a 5.3 Makeweights Prepare makeweights, consisting of two layers of knitted polyester fabric, each30cm 3cm 30cm 3cm and of mass35g3g, sewn together at the edges; or pieces of undyed spun polypropylen
23、e fabric,30cm 3cm 30cm 3cm of approximately160g/m 2mass per unit area, hemmed to prevent unravelling along the edges. NOTEPolypropylene fabric is not suitable as a dummy load when washing at temperatures above50 C. 6 Sampling, selection and preparation of test specimens Draw a sample approximately2m
24、 full width from an identifiable manufacturing batch and select from the sample five test specimens each400mm 400mm from positions evenly spaced throughout the sample. NOTEAn example of test specimen distribution within a sample is shown in Figure 1. 7 Conditioning and marking 7.1 Conditioning Condi
25、tion the five test specimens for at least4h at20 C 2 C and65 C 5 % relative humidity. 7.2 Marking Mark up each of the five test specimens with datum lines in accordance with method B of5.2 of BS4931:1986. 8 Procedure 8.1 Subject each set of five test specimens separately to the procedure given in8.2
26、 and8.5. 8.2 Subject the five test specimens, plus sufficient makeweights (see5.3) to give the total dry load specified in Table 1 to three consecutive washing procedures in accordance with5.1. 8.3 For each wash cycle use a sufficient quantity of the detergent specified in5.2 to give a final concent
27、ration in the wash liquor of1g/l. 8.4 Remove the five test specimens from the washing machine and, if necessary, separate the test specimens. Pre-condition and condition the five test specimens in accordance with BS3424-2:1992 and determine the dimensional stability in accordance with BS4931:1986. 8
28、.5 Note and record any delamination which may have occurred during washing (see3.1). 9 Test report The test report shall include the following particulars: a) a description of the coated fabric; b) the mean dimensional stability, expressed in the form of a percentage, in both the longitudinal and tr
29、ansverse directions; c) whether the coated fabric has suffered any delamination; d) any deviations from the standard test procedure or machine parameters; e) reference to this method of test, i.e.method39 of BS3424-36:1993. Component Percentage m/m Linear sodium alkyl benzene sulphonate (mean length
30、 of alkane chain: C 11.5 ) 8.0 Ethoxylated tallow alcohol(14 EO) 2.9 Sodium soap 3.5 (Chain length: C 12to C 16: 13 % to26% C 18to C 22 :74 % to87 %) Sodium tripolyphosphate 43.7 Sodium silicate (SiO 2 /Na 2 O =3.3/1) 7.5 Magnesium silicate 1.9 Carboxymethylcellulose (CMC) 1.2 Ethylene diamine tetra
31、-acetic acid (tetrasodium salt) (EDTS, sodium salt) 0.2 Sodium sulphate 21.2 Water 9.9 Total 100.0 a For information on the availability of the reference detergent, write to Customer Services, Information Services Group, BSI, Linford Wood MK146LE.BS3424-36:1993 BSI 06-1999 3 Figure 1 Scheme for the
32、selection of test specimens4 blankBS3424-36:1993 BSI 06-1999 List of references (see clause 2) Normative references BSI standards publications BRITISH STANDARDS INSTITUTION, London BS3424, Testing coated fabrics. BS3424-2:1992, Method4. Pre-conditioning and conditioning of coated fabrics for testing
33、 pruposes. BS4931:1986, Methods for preparation, marking and measuring of textile fabrics, garments and fabric assemblies in tests for assessing dimensional change. Informative references BSI standards publications BRITISH STANDARDS INSTITUTION, London BS1006:1990, Methods of test for colour fastnes
34、s of textiles and leather. BS3424, Testing coated fabrics. BS3424-9:1990, Methods11A,11B,11C and11D. Methods for determination of resistance to damage by flexing. BS4923:1991, Methods for individual domestic washing and drying for use in textile testing. BS 3424-36: 1993 BSI 389 Chiswick High Road L
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