DIN EN ISO 13936-3-2007 Textiles - Determination of the slippage resistance of yarns at a seam in woven fabrics - Part 3 Needle clamp method (ISO 13936-3 2005)English version of DI.pdf

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1、May 2007DEUTSCHE NORM English price group 11No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 59.080.30!,xb?“9856328www.

2、din.deDDIN EN ISO 13936-3Textiles Determination of the slippage resistance of yarns at a seam in wovenfabrics Part 3: Needle clamp method (ISO 13936-3:2005)English version of DIN EN ISO 13936-3:2007-05Textilien Bestimmung des Schiebewiderstandes von Garnen in einer Gewebenaht Teil 3: Verfahren mit N

3、adelklemme (ISO 13936-3:2005)Englische Fassung DIN EN ISO 13936-3:2007-05www.beuth.deDocument comprises 17 pages 08.07DIN EN ISO 13936-3:2007-05 2 National foreword This standard has been published in accordance with a decision taken by Technical Committee CEN/TC 248 “Textiles and textile products”

4、(Secretariat: BSI, United Kingdom) to adopt International Standard ISO 13936-3:2005 as a European Standard. ISO 13936-3 was prepared by Technical Committee ISO/TC 38 “Textiles”. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standard

5、s Committee), Technical Committee NA 062-05-21 AA Physikalisch-technolo-gische Prfverfahren fr Textilien. The DIN Standards corresponding to the International Standards referred to in clause 2 of the EN are as follows: ISO 139 DIN EN 20139 ISO 7500-1 DIN EN ISO 7500-1 ISO 10012-1 DIN EN ISO 10012-1

6、National Annex NA (informative) Bibliography DIN EN 20139, Textiles Standard atmospheres for conditioning and testing DIN EN ISO 7500-1, Metallic materials Verification of static uniaxial testing machines Part 1: Tension/ compression testing machines Verification and calibration of the force-measuri

7、ng system DIN ISO 10012-1, Quality assurance requirements for measuring equipment Part 1: Metrological confirma-tion system for measuring equipment EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 13936-3 February 2007 ICS 59.080.30 English Version Textiles - Determination of the slippage re

8、sistance of yarns at a seam in woven fabrics - Part 3: Needle clamp method (ISO 13936-3:2005) Textiles - Dtermination de la rsistance au glissement des fils de couture dans les tissus - Partie 3: Mthode de la griffe (ISO 13936-3:2005) Textilien - Bestimmung des Schiebewiderstandes von Garnen in eine

9、r Gewebenaht - Teil 3: Verfahren mit Nadelklemme (ISO 13936-3:2005) This European Standard was approved by CEN on 21 January 2007. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national stand

10、ard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained 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

11、language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, F

12、inland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES

13、 KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 13936-3:2007: EContents Page 1 Scope 2 Normative references . 3 Terms and definitions. 4 Principle

14、. 5 Apparatus and materials 6 Atmosphere for conditioning and testing 7 Sampling and preparation of test specimens 8 Test procedure 9 Calculation and expression of results 10 Annex B (informative) Example of pattern for cutting out test specimens from the laboratory samples Annex C (informative) Alt

15、ernative procedure for apparel fabrics . Bibliography . 2 EN ISO 13936-3:2007 (E)5566891112 131415.3444Foreword Test report . Annex A (informative) Suggested procedure for sampling Foreword The text of ISO 13936-3:2005 has been prepared by Technical Committee ISO/TC 38 “Textiles” of the Internationa

16、l Organization for Standardization (ISO) and has been taken over as EN ISO 13936-3:2007 by Technical 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 ide

17、ntical text or by endorsement, at the latest by August 2007, and conflicting national standards 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 Sta

18、ndard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. En

19、dorsement notice The text of ISO 13936-3:2005 has been approved by CEN as EN ISO 13936-3:2007 without any modifications. 3 EN ISO 13936-3:2007 (E)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 h

20、eld in a needle clamp under conditions of stress. This method provides a means to negate variations introduced 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

21、Normative references The following referenced documents are indispensable for the application 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. ISO 139, Textiles Standard a

22、tmospheres for conditioning and testing ISO 7500-1, Metallic materials Verification of static uniaxial 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:

23、Metrological confirmation system for measuring equipment 3 Terms and definitions For the purposes of this 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 spee

24、d throughout the test where the entire testing system is virtually free from deflection 3.2 strip test tensile test for which the full width of the test specimen is gripped in the jaws 4 EN ISO 13936-3:2007 (E)3.3 yarn slippage movement in a woven fabric of weft yarns over warp yarn (or warp yarns o

25、ver weft yarns) as a result of a pulling action NOTE Seam slippage is a fabric property not to be confused 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 o

26、ver warp yarns, during which the weft yarns are at right angles to the direction of pull 3.6 gauge length distance 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

27、 a needle-clamping device for the pinned specimen and conventional jaws for the unpinned specimen, to produce, 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 cu

28、rves at specified force applications. 5 Apparatus and materials 5.1 CRE machine, having the following general 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

29、 the corresponding extension of the test specimen. b) Under conditions of the use, the accuracy of the apparatus 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

30、the error of the indicated or recorded jaw separation shall not exceed 1 mm. c) If recording of force and elongation 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 boa

31、rds and applicable software, a chart recorder is necessary. d) The machine shall be capable of constant rates 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 mac

32、hine shall be in accordance with ISO 10012-1. 5.2 Needle-clamp clamping device, with a row of needles on one 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. 5 EN ISO 13936-3:

33、2007 (E)Table 1 Number and characteristics of needle-clamp needles for different fabrics Criteria Apparel fabrics 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 Ne

34、edle 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) 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 c

35、entral point of the two jaws of the machine in the line of pull, the front edges at right angles to the line of 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 otherw

36、ise weaken the test specimen. The faces of the jaws shall be smooth and flat, except if, even with packing, the 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 ei

37、ther smooth or corrugated jaws include paper, leather, plastics or rubber sheet. The jaw faces should preferably 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 Atmosph

38、ere for conditioning and testing The standard atmosphere for conditioning and testing textiles shall be as specified 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

39、 as agreed between the interested parties. In case of the absence of specifications, an example sampling procedure 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 represen

40、tative of the fabric. 7.2 Preparation of test specimens 7.2.1 From each laboratory sample, cut two sets of 5 test 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 f

41、rom each of the long edges of the cut strip until the width of the test specimen is 50 mm. 7.2.3 Draw a reference line at half length of the test specimen and identify each end. 6 EN ISO 13936-3:2007 (E)Dimensions in millimetres Key 1 moving jaw (moving jaw clamping and opening mechanism not shown)

42、2 needlesd, e, f3 guard 4 hinged jaw 5 stop Specifications of this part of ISO 13936: Dimension or other characteristic 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 1

43、0 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 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 characte

44、ristics 7 EN ISO 13936-3:2007 (E)8 Test procedure Condition the test specimens for a minimum of 24 h in accordance with Clause 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 len

45、gth 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 original position and rem

46、ove the specimen. Place the needle clamp in the bottom jaw of the tensile testing machine (see Figure 1) or replace the conventional jaw by a needle clamp as described in Figure 1. Move the clamps of the tensile testing machine until they are (100 1) mm apart. NOTE The gauge length is measured betwe

47、en the effective clamping point of the top jaw and the line of needles in the needle clamp. Fasten the other end of the test specimen in the needle clamp by pressing the needles into the test specimen. The needles shall be parallel to the thread system across the width of the sample (see Figure 2).

48、The width of the test specimen shall lie parallel to the stop device. The positioning of the pins for the apparel fabric and the furnishing and upholstery fabric is defined in Figure 2. Re-clamp the other end of test specimen in the top jaw in order to avoid a loose test specimen. Put the moving cla

49、mp in motion, engage any device to record the force/extension curve and extend the test specimen until the force equals (250 5) N. The force of 250 N has been determined to result in a complete force/extension curve. A lower maximum force applied to the test specimen, depending on the type of fabrics, may be defined as follows: a) for apparel fabric (100 5) N; b) for furnishing and upholstery fabric (200 5) N. Return the moving clamp to the original position. Repeat the test procedure