1、BS ISO 7770:2009 ICS 59.080.30 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Textiles Test method for assessing the smoothness appearance of seams in fabrics after cleansingThis British Standard was published under the authority of the Standards Policy and S
2、trategy Committee on 30 June 2009. BSI 2009 ISBN 978 0 580 62718 7 Amendments/corrigenda issued since publication Date Comments BS ISO 7770:2009 National foreword This British Standard is the UK implementation of ISO 7770:2009. It supersedes BS ISO 7770:2006 which is withdrawn. The UK participation
3、in its preparation 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 pro
4、visions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations.BS ISO 7770:2009Reference number ISO 7770:2009(E) ISO 2009INTERNATIONAL STANDARD ISO 7770 Third edition 2009-05-15 Textiles Test method for asses
5、sing the smoothness appearance of seams in fabrics after cleansing Textiles Mthode dessai pour lvaluation de la rgularit daspect des coutures sur les toffes aprs nettoyage BS ISO 7770:2009 ISO 7770:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensi
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10、11 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2009 All rights reservedBS ISO 7770:2009 ISO 7770:2009(E) ISO 2009 All rights reserved iii Contents Page Foreword iv 1 Scope . 1 2 Normative references . 1 3 Principle. 1
11、 4 Apparatus 1 5 Test specimens . 2 6 Procedure 2 7 Expression of results . 3 8 Test report . 3 Annex A (informative) Digital description of the ISO seam-pucker replicas 9 BS ISO 7770:2009 ISO 7770:2009(E) iv ISO 2009 All rights reservedForeword ISO (the International Organization for Standardizatio
12、n) 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 member body interested in a subject for which a technical committee has been established has the right to be rep
13、resented 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 Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards a
14、re drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an Internatio
15、nal Standard requires approval by at least 75 % of the member bodies casting a vote. 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 held responsible for identifying any or all such patent rights. ISO 7770 was pre
16、pared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 2, Cleansing, finishing and water resistance tests. This third edition cancels and replaces the second edition (ISO 7770:2006), of which it constitutes a minor revision. It incorporates ISO 7770:2006/DAmd.1:2008 to add Annex A (inform
17、ative). BS ISO 7770:2009 INTERNATIONAL STANDARD ISO 7770:2009(E) ISO 2009 All rights reserved 1 Textiles Test method for assessing the smoothness appearance of seams in fabrics after cleansing 1 Scope This International Standard specifies a test method for evaluating the smoothness appearance of sea
18、ms in fabrics, after one or several cleansing treatments. A seaming technique is not included, since the purpose is to evaluate existing seams. This method has been developed for use primarily with type B domestic washing machines, as defined in ISO 6330, in the cleansing process. However, it may be
19、 possible to use it with type A machines, as defined in the same International Standard. NOTE A digital description of the ISO seam-pucker replicas is given in Annex A. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated referen
20、ces, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 105-A03, Textiles Tests for colour fastness Part A03: Grey scale for assessing staining ISO 139, Textiles Standard atmospheres for conditioning and testi
21、ng ISO 3175 (all parts), Textiles Professional care, drycleaning and wetcleaning of fabrics and garments ISO 6330, Textiles Domestic washing and drying procedures for textile testing 3 Principle 3.1 Seamed fabric specimens are subjected to procedures simulating cleansing practices. One of the washin
22、g and drying procedures specified in ISO 6330 or one of the professional procedures specified in ISO 3175 is used, as agreed between the interested parties. 3.2 The specimens are compared visually with photographic or 3D plastic replica standards under specified illumination. 4 Apparatus 4.1 Washing
23、 and drying apparatus, as specified in ISO 6330, or professional care apparatus, as specified in ISO 3175. 4.2 Steam or dry iron, with appropriate fabric temperature settings. BS ISO 7770:2009 ISO 7770:2009(E) 2 ISO 2009 All rights reserved4.3 Lighting. The evaluation area shall be a darkened room,
24、using the lighting and viewing arrangement shown in Figure 1 and comprising the following items. Lamp dimensions should be chosen to extend beyond the overall surface of a test specimen and replicas, when used for the assessment. 4.3.1 Two CW (cool white) fluorescent lamps, without baffle or glass,
25、a minimum of 2 m in length each, placed side by side. 4.3.2 One white enamel reflector, without baffle or glass. 4.3.3 One thick plywood viewing board, painted grey to match the No. 2 rating on the grey scale for assessing staining specified in ISO 105-A03. 4.4 Photographic standards, prepared for e
26、valuating seam appearance (single and double needle stitching) as shown in Figures 2 and 3 1) . 4.5 Three-dimensional (3D) plastic replica standards, prepared for evaluating seam appearance (single and double needle stitching), as shown in Figures 4 and 5 2) . 5 Test specimens Prepare three test spe
27、cimens, each measuring 38 cm 38 cm and pinked to prevent fraying and each prepared in an identical manner with a seam inserted through the middle of the length direction of the fabric. If the fabric is wrinkled, it may be smoothed by appropriate ironing prior to testing. Care shall be taken to avoid
28、 altering the quality of the seam itself. If excessive fraying is anticipated, specimens shall be stitched loosely 1 cm in from the edges, using dimensionally stable thread. 6 Procedure 6.1 Treat each specimen in accordance with one of the procedures specified in ISO 6330 or ISO 3175, as agreed betw
29、een the interested parties. 6.2 If required, repeat the selected treatment four times, to give a total of five cycles. 6.3 Condition the test specimens for a minimum of 4 h and maximum of 24 h according to ISO 139, by hanging each specimen by two corners with the seam in a vertical position or, alte
30、rnatively, using full-width clamps. 6.4 For the evaluation, carry out steps 6.4.1 to 6.4.5. 6.4.1 Three observers shall rate each treated test specimen independently. 1) The standards shown in Figures 2 and 3 are for illustrative purposes only. The standards may be obtained from AATCC Technical Cent
31、er, One Davis Drive, P.O. Box 12215, Research Triangle Park, North Carolina 27709-2215, USA; Tel: +1 919-549-8141; Fax: +1 919-549-8933; http:/www.aatcc.org/. This information is given for the convenience of the users of this document and does not constitute an endorsement by ISO of the product name
32、d. Equivalent products may be used if they can be shown to lead to the same results. 2) The standards shown in Figures 4 and 5 are for illustrative purposes only. The standards may be obtained from Japanese Standards Association (JSA), 4-1-24 Akasaka, Minato-Ku, Tokyo 107-8440 Japan; Tel: +81-3-3583
33、-8002; Fax: +81-3-3583-0462; http:/www.jsa.or.jp/. This information is given for the convenience of the users of this document and does not constitute an endorsement by ISO of the product named. Equivalent products may be used if they can be shown to lead to the same results. BS ISO 7770:2009 ISO 77
34、70:2009(E) ISO 2009 All rights reserved 3 6.4.2 Mount the test specimen on the viewing board (4.3.3) as illustrated in Figure 1, with the seam in the vertical direction. Place the appropriate photographic standards (4.4) (single or double needle) alongside or the appropriate 3D plastic replica stand
35、ards (4.5) (single or double needle) on either side of the test specimen to facilitate comparative rating. (See Note, Figure 1.) The overhead fluorescent light (4.3.1) shall be the only light source for the viewing board, and all other lights in the room shall be turned off. It has been the experien
36、ce of many observers that the light reflected from the side walls near the viewing board can interfere with the rating results. It is recommended that the side walls be painted black or that blackout curtains be mounted on either side of the viewing board to eliminate the reflective interference. 6.
37、4.3 The observer shall stand directly in front of the replica, 1,2 m away from the board. It has been found that normal variations in the height of the observer above and below the arbitrary 1,5 m eye level have no significant effect on the rating given. 6.4.4 Confine observations to the area influe
38、nced by the seam and disregard the appearance of the fabric itself. Assign the number of the photographic standard or assign a grade midway between the JIS three-dimensional plastic replica standards that most nearly match the appearance of the seam in the test specimen (see Figures 2, 3, 4 and 5 an
39、d Table 1). Standard 5 represents the best level of seam appearance while Standard 1 represents the poorest level of seam appearance. 6.4.5 Similarly, the observer shall independently rate each of the other two test specimens. The other two observers shall proceed in the same manner, assigning ratin
40、gs independently. 7 Expression of results Average the nine observations made by the three observers on the set of three test specimens. Report the average to the nearest half of a rating. Table 1 Seam appearance ratings Class Seam appearance 5 Equivalent to Standard 5 4,5 Midway between Standard 5 a
41、nd Standard 4 4 Equivalent to Standard 4 3,5 Midway between Standard 4 and Standard 3 3 Equivalent to Standard 3 2,5 Midway between Standard 3 and Standard 2 2 Equivalent to Standard 2 1,5 Midway between Standard 2 and Standard 1 1 Equivalent to or worse than Standard 1 8 Test report The test report
42、 shall include the following information: a) a reference to this International Standard (ISO 7770:2009); b) details of the sample evaluated; BS ISO 7770:2009 ISO 7770:2009(E) 4 ISO 2009 All rights reservedc) details of the cleansing procedures used, as specified in ISO 6330; d) the number of cleansi
43、ng cycles used; e) the standard replica used; f) the seam appearance rating as calculated according to Clause 7 and expressed according to Table 1; g) details of any deviation from the specified procedure. Dimensions in metres Key 1 standard 2 test specimen 3 board for viewing 4 example of fluoresce
44、nt lamp placement NOTE When using 3D plastic replica standards, a test specimen is placed in the middle and 3D replicas are placed on either side. Figure 1 Lighting equipment for viewing test specimens BS ISO 7770:2009 ISO 7770:2009(E) ISO 2009 All rights reserved 5Figure 2 Photographic comparative
45、ratings for single needle seams BS ISO 7770:2009 ISO 7770:2009(E) 6 ISO 2009 All rights reservedFigure 3 Photographic comparative ratings for double needle seams BS ISO 7770:2009 ISO 7770:2009(E) ISO 2009 All rights reserved 7Figure 4 Solid replica comparative ratings for single needle seams BS ISO
46、7770:2009 ISO 7770:2009(E) 8 ISO 2009 All rights reservedFigure 5 Solid replica comparative ratings for double needle seams BS ISO 7770:2009 ISO 7770:2009(E) ISO 2009 All rights reserved 9 Annex A (informative) Digital description of the ISO seam-pucker replicas A.1 Introduction This annex provides
47、the digital description of three-dimensional (3D) replicas. The data are not intended to be used to assess specimens. When assessing specimens, the 3D replicas are to be used. A.2 Processes of measurement and analysis A.2.1 A 3-dimensional scanning system was used to measure digital images of ISO se
48、am-pucker replicas as shown in Figure A.1. Specifications for the scanning system are shown in Table A.1. Figure A.1 3-Dimensional scanning system Table A.1 Specification of the 3-dimensional scanning system Camera 1 024 768 pixels, black and white (B/W) Special pattern Structural beam by halogen la
49、mp Adjustment of focus Using the laser-point light source Measurement time Approximately 70 s to 80 s Resolution 0,05 mm BS ISO 7770:2009 ISO 7770:2009(E) 10 ISO 2009 All rights reservedA.2.2 The measuring area is shown in Figure A.2. Dimensions in millimetres Key 1 measuring lines 2 seam line Figure A.2 Measuring area of seam-pucker replica A.2.3 A geometric shape of each standard replica is measured using a 3-dimensional laser scanning system in a parallel direction with the se
