1、BSI Standards Publication BS ISO 675:2014 Textiles Woven fabrics Determination of dimensional change on commercial laundering near the boiling pointBS ISO 675:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of ISO 675:2014. The UK participation in its preparati
2、on was entrusted to Technical Committee TCI/82, Textiles care labelling, dry cleaning, domestic laundering and drying. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a con
3、tract. Users are responsible for its correct application. The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 84869 8 ICS 59.080.30 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under t
4、he authority of the Standards Policy and Strategy Committee on 31 December 2014. Amendments issued since publication Date Text affectedBS ISO 675:2014 ISO 2014 Textiles Woven fabrics Determination of dimensional change on commercial laundering near the boiling point Textiles Tissus Dtermination de l
5、a variation des dimensions au lavage industriel au voisinage de lbullition INTERNATIONAL STANDARD ISO 675 Second edition 2014-12-01 Reference number ISO 675:2014(E)BS ISO 675:2014ISO 675:2014(E)ii ISO 2014 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2014 All rights reserved. Unless otherwis
6、e specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address belo
7、w or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in SwitzerlandBS ISO 675:2014ISO 675:2014(E)Contents Page Foreword iv 1 Scope . 1 2 Normative r
8、eferences 1 3 Principle 1 4 Reagents 1 5 Apparatus . 2 6 Preparation of specimen 3 7 Procedure. 3 7.1 Washing and rinsing . 3 7.2 Extraction 3 7.3 Pressing . 3 7.4 Evaluation 3 8 Calculation and expression of results . 4 9 Test report . 4 Annex A (informative) Hardness of water . 5 ISO 2014 All righ
9、ts reserved iiiBS ISO 675:2014ISO 675:2014(E) Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each mem
10、ber body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International El
11、ectrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different type
12、s of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be
13、held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is informa
14、tion given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see th
15、e following URL: Foreword - Supplementary information. The committee responsible for this document is ISO/TC 38, Textiles, Subcommittee SC 2, Cleansing, finishing and water resistance tests. This second edition cancels and replaces the first edition (ISO 675:1979), of which it constitutes a minor re
16、vision. It also incorporates Technical Corrigendum ISO 675:1979/Cor.1:2002.iv ISO 2014 All rights reservedBS ISO 675:2014Textiles Woven fabrics Determination of dimensional change on commercial laundering near the boiling point 1 Scope This International Standard specifies a method for the determina
17、tion of the dimensional change (shrinkage or stretch) of all types of woven fabrics after commercial laundering near the boiling point. The test has been devised principally for cotton fabrics. If it is applied to other fabrics such as linen or regenerated cellulosic fibres, 9i) should be consulted.
18、 The method is intended only for the assessment of dimensional changes undergone by a woven fabric subjected to a single laundering. When it is desired to determine the amount of progressive dimensional change, the test specimen can be washed repeatedly and the results reported so as clearly to indi
19、cate the amount of dimensional change in the laundered specimen as compared with the original dimensions of the unwashed specimen and the number of testing cycles to which the specimen has been subjected. 2 Normative references The following documents, in whole or in part, are normatively referenced
20、 in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 139, Textiles Standard atmospheres for conditioning and testing ISO 3759:20
21、11, Textiles Preparation, marking and measuring of fabric specimens and garments in tests for determination of dimensional change 3 Principle Washing of a specimen in a cylindrical reversing laundry machine under specified conditions. Extraction of excess water and pressing without preliminary dryin
22、g. Measurement, before and after laundering, of distances marked on the specimen in the warp and weft directions. 4 Reagents 4.1 Soap solution. A stock solution may be prepared by dissolving 0,5 kg of soap in 4 l of hot water. When cooled, this solution forms a thick homogeneous jelly which may be u
23、sed as required. The soap meeting the following specification is satisfactory: moisture and volatile matter contents at 105 C, max.: 10,0 % (m/m); sum of free alkali, total matter insoluble in alcohol, and sodium chloride contents, max.: 4,0 % (m/m); free alkali content, calculated as NaOH, max.: 0,
24、2 % (m/m); content of matter insoluble in water, max.: 1,0 % (m/m); titre of the mixed fatty acids prepared from the soap, min.: 39 C; anhydrous soap content, min.: 85,0 %. INTERNATIONAL ST ANDARD ISO 675:2014(E) ISO 2014 All rights reserved 1BS ISO 675:2014ISO 675:2014(E) 4.2 Water. Soft water (not
25、 more than 50 mg/kg hardness) shall be used (see Annex A). 4.3 Anhydrous sodium carbonate. 5 Apparatus 5.1 Wash wheel. A horizontal cylindrical machine with rotating cage and reversing mechanism shall be used. The cage should have a diameter between 400 mm and 600 mm and a peripheral speed of 50 m/m
26、in to 55 m/min. Other diameters may be used as a temporary measure, provided that the rotational frequency is adjusted to give an equivalent peripheral speed. For preference, three or four fins or “lifters” about 80 mm wide, equally spaced around the interior of the cage and extending its full lengt
27、h, should be used. Either a single fin or two fins may be used, however, provided that equivalent results can be obtained. The cage shall turn at such speed that the load is lifted by the fins and falls back into it. (A peripheral speed of 54 m/min has been found satisfactory.) The cage shall make 5
28、 to 10 revolutions before reversing its direction. The machine shall be equipped with heating facilities, such as live steam, gas or electricity, and with an outlet large enough to permit discharge of all water from the machine in less than 2 min. A thermometer in a suitable well, or equivalent equi
29、pment, shall be provided to indicate the temperature of the water to within 1 C during the washing and rinsing, and there shall be an outside water gauge to indicate the level of the water in the wheel. The mass of the load to be run in the machine shall be between 8 kg and 50 kg of air-dry fabric p
30、er cubic metre of cage space, including the volume of the fins. The load shall be made up of test specimens and as much other similar fabric as is required. The quantity of water used shall be sufficient to cover the load, the level being situated at a height from 1/7 to 1/3 of the inside diameter o
31、f the cage. 5.2 Extractor. A laundry-type centrifugal extractor with perforated basket, or equivalent apparatus, shall be used and shall be capable of adjusting the moisture retention to a range between 50 % and 100 % (m/m) based on the air-dry mass of the fabric. Any other apparatus that will give
32、equivalent results without fabric distortion may be used, for example, a rubber roll wringer which could pass the specimen through the rolls along a diagonal line without altering its dimensions. NOTE Heavier fabrics of tight construction require a high-moisture retention to ensure removal of wrinkl
33、es during pressing. 5.3 Pressing equipment. A flat bed press capable of pressing a specimen 600 mm 600 mm and of providing a minimum pressure of 3,0 kPa is required. The temperature of the press shall be 150 C 15 C. 5.4 Marking equipment. The equipment specified in ISO 3759:2011, Clause 4 is require
34、d.2 ISO 2014 All rights reservedBS ISO 675:2014ISO 675:2014(E) 6 Preparation of specimen Take a specimen, preferably the full width of the cloth and at least 600 mm long. Each specimen shall be cut, not torn, from the material to be tested so that its sides are parallel to the warp and weft. Take sp
35、ecimens from at least 1 m away from the end of a roll and preferably 3 m away from the end. Mark, condition and measure the specimens as specified in ISO 3759:2011, 6.3 to 6.5 but using at least 500 mm between adjacent marks in each direction. To prevent entangle due to excessive ravelling, 10 mm sl
36、its along the cut edges of the test specimen should be made at approximately 100 mm intervals. 7 Procedure 7.1 Washing and rinsing 7.1.1 Place the specimen or specimens individually in the machine with sufficient similar fabric to make up the proper dry load (5.1). Start the machine, noting the time
37、, and allow the machine to run continuously for 60 min. During this time, carry out the following operations as indicated, each without delay. 7.1.2 Run water (4.2) into the machine at a temperature such that the machine will heat the liquor to boiling point within 10 min maximum, and fill to the pr
38、oper level for washing (5.1) within 4 min. 7.1.3 Add approximately 2 g/l of the anhydrous sodium carbonate (4.3). Raise the temperature rapidly to 95 C. Add sufficient soap solution (4.1) to give good running suds. If more than 5 g/l of soap is used, the amount and reasons for use shall be reported
39、see Clause 9, item h). The temperature shall be maintained at not less than 80 C. 7.1.4 When the machine has run for 40 min timed from the start of the test, drain off the soap solution quickly, and fill the machine with water to the proper level for rinsing. Raise the temperature to 60 C within 2 m
40、in. 7.1.5 When the machine has run for 45 min from the start of the test, drain off the water, fill again, and heat to 60 C as before. 7.1.6 At the end of 55 min from the start of the test, drain off the water quickly. Allow the machine to run without further additions to complete the full 60 min of
41、 operation. Stop the machine. 7.2 Extraction Remove the specimen from the machine. Extract the excess water (5.2). 7.3 Pressing Press each specimen, using the press ( 5.3), taking care to ensure that it is smoothed, without stretching, to remove wrinkles before pressing. Continue this operation unti
42、l sufficient moisture has been extracted from the fabric to ensure conditioning from the dry side. 7.4 Evaluation Allow the pressed specimen to cool, condition it in the standard atmosphere according to ISO 139, and measure the dimension as specified in ISO 3759:2011, 6.5. Make all measurements to t
43、he nearest 1 mm. ISO 2014 All rights reserved 3BS ISO 675:2014ISO 675:2014(E) 8 Calculation and expression of results Calculate the dimensional change between the marks of each pair. Express as percentages of the original value to the nearest 0,1 %, using a minus sign () to indicate shrinkage and a
44、plus sign (+) to indicate stretch. Calculate the mean dimensional change, in the warp and weft directions separately. 9 Test report The test report shall include the following particulars: a) a reference to this International Standard (i.e. ISO 675); b) the description of the sample; c) the position
45、s of the specimens in the fabric in relation to the ends of the piece; d) the number of washing cycles to which the specimen has been subjected; e) if necessary, the dimensional change between the marks of each pair, as a percentage of the original value; f) the mean dimensional change, in the warp
46、and weft directions separately, as a percentage of the original value; g) whether the specimen includes selvedge; h) the amount of the soap used. State the reasons for using more than 5 g/l o f s o a p w h e n t h i s amount is exceeded; i) the following statement, if the test method is applied to f
47、abrics which may be inherently extensible: “The application of even moderate tension in commercial washing and pressing may be expected to cause considerable extension of the washed fabrics.”4 ISO 2014 All rights reservedBS ISO 675:2014ISO 675:2014(E) Annex A (informative) Hardness of water Hardness
48、 refers to the presence of such soap-precipitating compounds as calcium, magnesium, and iron salts in the water. It is expressed in various units, most of them based on equivalents of calcium carbonate. Definitions of some of the units used are given below, followed by a table showing the conversion
49、 factors for these units. Table A.1 Conversion factors for units of water hardness Name of unit Def i n it i o n Symbol Conversion factors Ca 2+ CaO mg/kg a CaCO 3 mmol/l meq/l d e a f Millimole per litre 1 mmol of calcium (II) ions (Ca 2+ ) in 1 l of water mmol/l 1 2,000 5,600 100 7,020 5,850 0 10,00 Milliequivalent per litre 20,04 mg of calcium (II) ions (Ca 2+ ) in 1 l of water meq/l 0,500 1 2,800 50 3,510 2,925 0 5,00 German degree of hardness 10 mg of calcium oxide (CaO) in 1 l of water d 0,178
