1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58yarns at a seam in woven fabrics Part 3: Needle clamp methodThe European Standard EN ISO 13936-3:20
2、07 has the status of a British StandardICS 59.080.30Textiles Determination of the slippage resistance of BRITISH STANDARDBS EN ISO 13936-3:2007BS EN ISO 13936-3:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007ISBN 97
3、8 0 580 50385 6Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementatio
4、n of EN ISO 13936-3:2007. It is identical with ISO 13936-3:2005.The UK participation in its preparation was entrusted to Technical Committee TCI/24, Physical testing of textiles.A list of organizations represented on TCI/24 can be obtained on request to its secretary.This publication does not purpor
5、t to include all the necessary provisions of a EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 13936-3February 2007ICS 59.080.30English VersionTextiles - Determination of the slippage resistance of yarns at aseam in woven fabrics - Part 3: Needle clamp method (ISO13936-3:2005)Textiles - Dtermi
6、nation de la rsistance au glissement desfils de couture dans les tissus - Partie 3: Mthode de lagriffe (ISO 13936-3:2005)Textilien - Bestimmung des Schiebewiderstandes vonGarnen in einer Gewebenaht - Teil 3: Verfahren mitNadelklemme (ISO 13936-3:2005)This European Standard was approved by CEN on 21
7、January 2007.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be ob
8、tained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Manage
9、ment Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
10、 Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by
11、 any means reservedworldwide for CEN national Members.Ref. No. EN ISO 13936-3:2007: EForeword The text of ISO 13936-3:2005 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the International Organization for Standardization (ISO) and has been taken over as EN ISO 13936-3:2007 by Techn
12、ical Committee CEN/TC 248 “Textiles and textile products“, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2007, and conflicting national standards
13、shall be withdrawn at the latest by August 2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Ge
14、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 13936-3:2005 has been approved by CEN as EN ISO 13936-3:2007 wi
15、thout any modifications. EN ISO 13936-3:2007Reference numberISO 13936-3:2005(E)INTERNATIONAL STANDARD ISO13936-3First edition2005-03-01Textiles Determination of the slippage resistance of yarns at a seam in woven fabrics Part 3: Needle clamp method Textiles Dtermination de la rsistance au glissement
16、 des fils de couture dans les tissus Partie 3: Mthode de la griffe EN ISO 13936-3:2007ii iiiContents Page Foreword iv 1 Scope 1 2 Normative references . 1 3 Terms and definitions. 1 4 Principle . 2 5 Apparatus and materials 2 6 Atmosphere for conditioning and testing 3 7 Sampling and preparation of
17、test specimens 3 8 Test procedure 5 9 Calculation and expression of results 6 10 Test report . 8 Annex A (informative) Suggested procedure for sampling 9 Annex B (informative) Example of pattern for cutting out test specimens from the laboratory samples 10 Annex C (informative) Alternative procedure
18、 for apparel fabrics . 11 Bibliography . 12 EN ISO 13936-3:2007iv 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
19、committees. Each member 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
20、the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are 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 Interna
21、tional Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International 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 b
22、e the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 13936-3 was prepared by Technical Committee ISO/TC 38, Textiles, Subcommittee SC 24, Conditioning atmospheres and physical tests for textile fabrics. ISO 13936 consists of the followi
23、ng parts, under the general title Textiles Determination of the slippage resistance of yarns at a seam in woven fabrics: Part 1: Fixed seam opening method Part 2: Fixed load method Part 3: Needle clamp needle EN ISO 13936-3:20071Textiles Determination of the slippage resistance of yarns at a seam in
24、 woven fabrics Part 3: Needle clamp method 1 Scope This part of ISO 13936 describes a method for the determination of the resistance offered by the yarns of a woven fabric to slippage while being held in a needle clamp under conditions of stress. This method provides a means to negate variations int
25、roduced by seam preparation or sewing thread variation that can have a marked influence on test results. This method is not applicable to stretch fabrics or for industrial fabric, e.g. beltings. 2 Normative references The following referenced documents are indispensable for the application of this d
26、ocument. 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 7500-1, Metallic materials Verification of static uniaxial
27、testing machines Part 1: Tension/compression testing machines Verification and calibration of the force-measuring system ISO 10012-1, Quality assurance requirements for measuring equipment Part 1: Metrological confirmation system for measuring equipment 3 Terms and definitions For the purposes of th
28、is document, the following terms and definitions apply. 3.1 constant rate-of-extension testing machine tensile testing machine having one clamp fixed whilst the other is moving with a constant speed throughout the test where the entire testing system is virtually free from deflection 3.2 strip test
29、tensile test for which the full width of the test specimen is gripped in the jaws EN ISO 13936-3:20072 3.3 yarn slippage movement in a woven fabric of weft yarns over warp yarn (or warp yarns over weft yarns) as a result of a pulling action NOTE Seam slippage is a fabric property not to be confused
30、with seam strength. 3.4 warp slippage slipping of warp yarns over weft yarns, during which the warp yarns are at right angles to the direction of pull 3.5 weft slippage slipping of weft yarns over warp yarns, during which the weft yarns are at right angles to the direction of pull 3.6 gauge length d
31、istance between the two effective clamping points of the testing device 4 Principle A pinned and an unpinned test specimen are separately extended by using a tensile testing machine fitted with a needle-clamping device for the pinned specimen and conventional jaws for the unpinned specimen, to produ
32、ce, in the case of the use of a chart recorder, two force/extension curves originating from the same abscissa. The yarn slippage, expressed in millimetres, is determined by comparing the two curves at specified force applications. 5 Apparatus and materials 5.1 CRE machine, having the following gener
33、al characteristics. a) The tensile-testing machine shall be provided with a means for indicating or recording both the maximum force applied to the test specimen in stretching it to rupture and the corresponding extension of the test specimen. b) Under conditions of the use, the accuracy of the appa
34、ratus shall be at least class 1 in accordance with ISO 7500-1. The error of indicated or recorded maximum force at any point in the range in which the machine is used shall not exceed 1 %, and the error of the indicated or recorded jaw separation shall not exceed 1 mm. c) If recording of force and e
35、longation is obtained by means of data acquisition boards and software, the frequency of data collection shall be at least 8 per second. If the machine is not equipped with data acquisition boards and applicable software, a chart recorder is necessary. d) The machine shall be capable of constant rat
36、es of extension of 50 mm/min 5 mm/min (and 20 mm/min 2 mm/min). e) The machine shall be capable of gauge lengths of (100 1) mm and (20 1) mm. f) Metrological confirmation of tensile testing machine shall be in accordance with ISO 10012-1. 5.2 Needle-clamp clamping device, with a row of needles on on
37、e side and corresponding holes on the other as shown in Figure 1. The number and characteristics of these needles depend on the application of the fabrics as given in Table 1. EN ISO 13936-3:20073Table 1 Number and characteristics of needle-clamp needles for different fabrics Criteria Apparel fabric
38、s Furnishing and upholstery fabrics Number of needles per 5 cm width 17 7 Diameter of the needle shank (mm) 0,5 0,03 0,9 0,03 Space between axes of adjacent needles (mm) 2,5 0,1 7,0 0,1 Needle height (mm) 8,0 0,1 8,0 0,1 Type of needle round point round point The stop position (see Figures 1 and 2)
39、for apparel fabrics is different from that for furnishing and upholstery fabrics to ensure the correct positioning of the test specimen. 5.3 Conventional-jaws clamping device, having the central point of the two jaws of the machine in the line of pull, the front edges at right angles to the line of
40、pull and their clamping faces in the same plane. The jaws shall be capable of holding the test specimen without allowing it to slip, and shall be designed so that they do not cut or otherwise weaken the test specimen. The faces of the jaws shall be smooth and flat, except if, even with packing, the
41、test specimen cannot be held satisfactorily with flat-faced jaws or rubber-faced jaws; in these cases, engraved or corrugated jaws shall be used. Suitable packing materials for use with either smooth or corrugated jaws include paper, leather, plastics or rubber sheet. The jaw faces should preferably
42、 have a width of at least 60 mm but shall be not less than the width of the test specimen. 5.4 Equipment for cutting test specimens and fraying them to obtain the required width. 6 Atmosphere for conditioning and testing The standard atmosphere for conditioning and testing textiles shall be as speci
43、fied in ISO 139. 7 Sampling and preparation of test specimens 7.1 Sampling Select samples either in accordance with the procedure laid down in the material specifications for the fabric or as agreed between the interested parties. In case of the absence of specifications, an example sampling procedu
44、re is given in Annex A. An example of cutting test specimens from the laboratory sample is given in Annex B. Avoid test areas with folded or creased places, selvages and areas not representative of the fabric. 7.2 Preparation of test specimens 7.2.1 From each laboratory sample, cut two sets of 5 tes
45、t specimens (300 mm long and 60 mm wide) 150 mm from the selvage, one set in the warp direction and the other in the weft direction. 7.2.2 Remove approximately the same number of threads from each of the long edges of the cut strip until the width of the test specimen is 50 mm. 7.2.3 Draw a referenc
46、e line at half length of the test specimen and identify each end. EN ISO 13936-3:20074 Dimensions in millimetres Key 1 moving jaw (moving jaw clamping and opening mechanism not shown) 2 needlesd, e, f3 guard 4 hinged jaw 5 stop Specifications of this part of ISO 13936: Dimension or other characteris
47、tic For furnishing and upholstery fabrics For apparel fabrics a Distance from stop to top edge of pin device (mm) 20 0,5 15 0,5 b Distance from stop to centre of pin line (mm) 15 0,5 10 0,5 c Distance between axes of adjacent needles (mm) 7 0,1 2,5 0,1 d Diameter of the needle base (mm) 0,9 0,03 0,5
48、 0,03 e Needle height (mm) 8 0,5 8 0,5 f Number of needles 7 17 g Fabric slot width (mm) 2,25 0,25 2,25 0,25 Figure 1 Diagram of needle bar clamp with specified dimensions and characteristics EN ISO 13936-3:200758 Test procedure Condition the test specimens for a minimum of 24 h in accordance with C
49、lause 6. Set the tensile testing machine to give a constant rate of traverse of (50 5) mm/min. Attach the two conventional clamps to the tensile testing machine. Set the gauge length to (100 1) mm. Mount one end of the test specimen in the clamps as shown in Figure 2. Set the moving clamp in motion, engage any device to record the force/extension curve and extend the test specimen until the force is equal to (250 5) N. Return the moving clamp to the or
