1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-20334-4 SANS 1423-1:2008Edition 1.1Any reference to SABS 1423-1 is deemedto be a reference to this standard (Government Notice No. 1373 of
4、 8 November 2002)SOUTH AFRICAN NATIONAL STANDARD Performance requirements for textile fabrics of low flammability Part 1: Apparel fabrics Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code + 27 12 www
5、.stansa.co.za Standards South Africa SANS 1423-1:2008 Edition 1.1 Table of changes Change No. Date Scope Amdt 1 2008 Amended to change the designation of SABS standards to SANS standards, with no technical changes. Foreword This South African standard was approved by National Committee StanSA SC 511
6、0.01J, Textiles Low flammable textile products, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in March 2008. This document supersedes SABS 1423-1:1987 (edition 1). SANS 1423 consists of the following parts, u
7、nder the general title Performance requirements for textile fabrics of low flammability: Part 1: Apparel fabrics. Part 2: Curtain and drape fabrics. Part 3: Upholstery fabrics. Part 4: Bedding fabrics, bedcovers and pillows. Part 5: Fabrics for use in movable office partitions. Annex A forms an inte
8、gral part of this document. Annex B is for information only. SANS 1423-1:2008 Edition 1.1 1 Contents Page Foreword 1 Scope . 3 2 Normative references 3 3 Definitions 3 4 Flammability requirements . 4 5 Methods of test 5 5.1 Tests specimens . 5 5.2 Conditioning 5 5.3 Wash treatment . 5 5.4 Sequence o
9、f testing 5 5.5 Surface flash 6 5.6 Ignition time 6 5.7 Extent of flame spread and rate of flame propagation . 6 6 Labelling and marking 7 Annex A (normative) Notes to purchasers . 8 Annex B (informative) Test and evaluation flow chart 8 SANS 1423-1:2008 Edition 1.1 2 This page is intentionally left
10、 blank SANS 1423-1:2008 Edition 1.1 3 Performance requirements for textile fabrics of low flammability Part 1: Apparel fabrics 1 Scope This part of the standard covers the flammability performance requirements for four classes of washable apparel fabric, each class being divided into three flammabil
11、ity performance categories. NOTE The use of certain fabric combinations, trims, accessories and sewing threads that are not compatible can have an adverse effect on the flammability performance of a garment. 2 Normative references The following referenced documents are indispensable for the applicat
12、ion 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. Information on currently valid national and international standards can be obtained from Standards South Africa. SANS
13、70, Conditioning of textiles and standard temperate atmosphere for determining their physical and mechanical properties. SANS 960, Textiles Dimensional stability during washing and drying procedures. SANS 6105, Surface burning properties of textile fabrics. SANS 6940/ISO 6940, Textile fabrics Burnin
14、g behaviour Determination of ease of ignition of vertically oriented specimens. SANS 6941/ISO 6941, Textile fabrics Burning behaviour Measurement of flame spread properties of vertically oriented specimens. SANS 10146, Laundry processes and management. 3 Definitions For the purposes of this document
15、, the following definitions apply. 3.1 extent distance travelled, in a vertical direction, by the flame from a burning specimen under specified test conditions SANS 1423-1:2008 Edition 1.1 4 3.2 flammability ability of a fabric to burn with a flame under specified test conditions 3.3 ignition time l
16、ength of time during which the fabric is exposed to an ignition source until flaming of the specimen occurs 3.4 rate of flame propagation measure of the progression of flaming combustion of the fabric under specified test conditions 3.4 surface flash rapid spread of flame over the surface of a raise
17、d or a pile fabric without ignition of its basic structure 4 Flammability requirements 4.1 Fabric class and flammability performance category 4.1.1 Fabric class The fabric shall be of one of the following classes, as required (see annex A): Class A: Capable of withstanding the required industrial or
18、 hospital laundry process, which shall preferably be one of the processes given in SANS 10146. Class B: Capable of withstanding wash treatments at temperatures of up to 95 C. Class C: Capable of withstanding wash treatments at temperatures of up to 60 C. Class D: Capable of withstanding wash treatme
19、nts at temperatures of up to 40 C. 4.1.2 Flammability performance category The fabric shall be of one of the following categories, as required (see annex A). Category 1: The fabric does not ignite within a given time period. Category 2: The fabric ignites within a given time period but the flame spr
20、ead ceases within a specified distance. Category 3: The fabric ignites within a given time period and might continue to flame but at a rate of flame propagation that is within a specified limit. 4.2 Flammability performance The fabric of any class shall, both before and after the appropriate wash tr
21、eatment, comply with the relevant requirements given in table 1. SANS 1423-1:2008 Edition 1.1 5 Table 1 Flammability performance requirements 1 2 3 4 5 Requirement Category Property 1 2 3 Test method subclause Surface flashaNone None None 5.5 Ignition time, s 20 20 20 5.6 Extent of flame spread Not
22、beyond the first marker thread 5.7 Rate of flame propagation, mm/s, max. 5 5.7 a Applicable only in the case of raised or pile fabrics. 5 Methods of test 5.1 Test specimens When taken from a made-up garment, test specimens shall be free from seams and hems. If the dimensions of a garment are insuffi
23、cient to provide the required size of specimen, staple together shorter pieces of the fabric (without overlapping), using not more than four equally spaced metal staples over the full width of the test specimen. 5.2 Conditioning Condition the test samples in accordance with SANS 70 before cutting fr
24、om each test sample the test specimens required for the tests given in 5.5 to 5.7 (inclusive). 5.3 Wash treatment When relevant, the appropriate number of test specimens shall be subjected to the following wash treatment applicable to the fabric class: Class A: Twelve wash cycles in accordance with
25、the laundry process to which the fabric or garment will be subjected in use. Class B: Five wash cycles in accordance with SANS 960: Procedure A but, in place of the sodium carbonate and soap flakes, using the IEC test detergent Type 11) (without perborate). Class C: Five wash cycles in accordance wi
26、th SANS 960: Procedure B but, in place of the wetting agent, using the IEC test detergent Type 11)(without perborate) in the same quantity as for Class B. Class D: Five wash cycles in accordance with SANS 960: Procedure C but, in place of the wetting agent, using the IEC test detergent Type 11)(with
27、out perborate) in the same quantity as for Class B. 5.4 Sequence of testing NOTE A flow chart illustrating the sequence of testing and the requirements to be determined for each category is given in annex B. To economize on the quantity of fabric required and the time and costs involved in testing,
28、tests shall be performed in the following sequence: 1) Details regarding suppliers of the IEC test detergent are obtainable from the Construction Standards Department of StanSA (a division of the SABS). SANS 1423-1:2008 Edition 1.1 6 a) Stage 1: In the case of a raised or a pile fabric, determine wh
29、ether surface flash occurs (see 5.5) on test specimens before washing. If surface flash does not occur, repeat the test on specimens washed in accordance with the treatment appropriate to the fabric class. If flash still does not occur, proceed to stage 2. If surface flash occurs on specimens either
30、 before or after washing, no further tests are required. b) Stage 2: Determine the ignition time (see 5.6) on test specimens before washing. If the ignition time exceeds 20 s, repeat the test on specimens washed in accordance with the treatment appropriate to the fabric class. If ignition time is eq
31、ual to or less than 20 s on specimens either before or after washing, proceed to stage 3. If the ignition time still exceeds 20 s, no further tests are required. c) Stage 3: Perform the test for extent of flame spread (see 5.7) on test specimens before washing. If the flame spread does not extend be
32、yond the first marker thread, repeat the test on specimens washed in accordance with the treatment appropriate to the fabric class. If the flame spread extends beyond the first marker thread on specimens either before or after washing, proceed to stage 4. If it still does not extend beyond the first
33、 marker thread, no further tests are required. d) Stage 4: Determine the rate of flame propagation (see 5.7) on test specimens before washing. If it is less than 5 mm/s, repeat the test on specimens washed in accordance with the treatment appropriate to the fabric class. 5.5 Surface flash Use SANS 6
34、105. 5.6 Ignition time Use the method given in SANS 6940 for surface ignition. 5.7 Extent of flame spread and rate of flame propagation Use the method given in SANS 6941 for surface ignition, but at a flame application time (up to a maximum of 20 s) as determined in accordance with 5.6. If the flame
35、 spread extends beyond the marker thread(s), determine each rate of flame propagation from the recorded flame spread time(s), as follows: Rate of flame propagation, mm/s: 11220tR = 122150ttR = 233150ttR = where R1 is the rate of flame propagation to the first marker thread, in millimetres per second
36、; R2 is the rate of flame propagation between the first and second marker threads, in millimetres per second; R3is the rate of flame propagation between the second and third marker threads, in millimetres per second; SANS 1423-1:2008 Edition 1.1 7 t1, t2, t3are the mean times from the application of
37、 the igniting flame to the severance of the first, second and third marker threads respectively, in seconds. 6 Labelling and marking The following information shall appear in legible and indelible marking on a label securely attached to the fabric: a) the fabric class and flammability performance ca
38、tegory; b) in the case of a class A fabric, the applicable laundry process. SANS 1423-1:2008 Edition 1.1 8 Annex A (normative) Notes to purchasers The following requirements shall be specified in tender invitations and in each order or contract: a) the fabric class and flammability performance categ
39、ory (see 4.1); b) in the case of a class A fabric, the laundry process to which the fabric or garment will be subjected in use (see 4.1.1). Annex B (informative) Test and evaluation flow chart The flow chart in figure B.1 illustrates the sequence in which tests shall be performed on specimens, both before and after the appropriate wash treatment, and the evaluations necessary to determine into which category a fabric falls or whether a fabric complies with the relevant requirements for a particular category. SANS 1423-1:2008 Edition 1.1 9 Figure B.1 Sequence of tests Standards South Africa
