1、STD-BSI BS EN 12773-ENGL 2000 W Lb24bb9 0830246 994 W BRITISH STANDARD Footwear - Test methods for outsoles - Needle tear strength The European Standard EN 127731999 has the status of a British Standard NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW LS EN 2773:ZOOO STD-BSI BS
2、 EN L2773-ENGL 2000 Lh24bh9 0830247 820 H Amd. No. BS EN 12773:2000 Date Comments National foreword This British Standard is the official English language version of EN 127731999. The UK participation in its preparation was entrusted to Technical Committee TCV69, Footwear and leather, which has the
3、responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the - monitor related international and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK A list
4、of orgamizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International
5、 Standards Correspondence Index”, or by using the “Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British S
6、tandard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a Cont cover, an inside hnt cover, the EN title page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. This Briti
7、sh Standard, having been prepared under the direction of the Sector Committee for Materials and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 Febniary 2000 O BSI 02-2000 ISBN O 580 35616 7 STD-BSI BS EN ii2773-ENGL 2000 I1624669 0830248 767 EUROP
8、EAN STANDARD EN 12773 NORME EUROPENNE EUROPISCHE NORM November 1999 ICs 61 .O60 English version Footwear - Test methods for outsoles - Needle tear strength Chaussures - Mthodes dessai applicables aux semelles dusure - Rsistance du point de couture Schuhwerk - Prfverfahren fur Laufsohlen - Nadelausre
9、ifestigkeit This European Standard was approved by CEN on 17 September 1999. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this Europan Standard the status of a national standard without any alteration. Up-to-date lists and biblio
10、graphical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by trmslation under the responsibility of a
11、 CEN member into its own language and notified to the Central Secretariat has the same status as be official versions. CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norwa
12、y, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassart, 36 8-1050 Brussels 8 1999 CEN All rights of exploitation in any form and by any means reserved worldw
13、ide for CEN national Members. Ref. No. EN 12773:1999 E STD-BSI BS EN 12773-ENGL 2000 m 1b24bb 0830249 bT3 m Page 2 EN I 2773: I999 Contents Page Foreword . 1 Scope 2 Normative references 3 Definit ions . 4 Apparatus and material . 6 Test method . 8 Test report . 5 Sampling and conditioning 7 Express
14、ion of results OBSI 02-2000 sTD.BS1 BS EN L2773-ENGL 2000 Lb24bb 0830250 315 Page 3 EN 12773:1999 Foreword This European Standard has been prepared by Technical Committee CEN/TC 309, Footwear, the Secretariat of which is held by AENOR. This European Standard shall be given the status of a national s
15、tandard, either by publication of an identical text or by endorsement, at the latest by May 2000, and conflicting national standards shall be withdrawn at the latest by May 2000. According to the CENICENELEC Internal Regulations, the national standards organizations of the following countries are bo
16、und to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. OBSI 02-2000 STD-BSI BS EN 12773-ENGL 2000 Lb2Ybb7 0830251 251
17、m Page 4 EN 12773: 1 999 1 Scope This European Standard specifies a method for the determination of the needle tear strength for outsoles, irrespective of the material. 2 Normative references This European Standard incorporates by dated or undated reference, provisions from other publications. These
18、 normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated
19、 references the latest edition of the publication referred to applies. EN 10002-2 Metallic materials. Tensile testing - Part 2: Verification of the force measuring system of the tensile testing machines. EN 12222 Footwear - Standard atmospheres for conditioning and testing of footwear and components
20、 for footwear. prEN 13400: 1998 Footwear - Sampling location of components for footwear. 3 Definit ions For the purposes of this standard the following definition applies: 3.1 needle tear strength the quotient by division of the maximum force, occurring during tearing-out of the needle, by the thick
21、ness of the test piece 4 Apparatus and material The following apparatus and material shall be used: 4.1 Tensile-testing machine The tensile-testing machine shall comply with the requirements of EN 10002-2, to an accuracy corresponding to grade B, with a constant rate of traverse of 100 mdmin 2 10 mm
22、/min. Autographic recording of force or a maximum force pointer is recommended. Page 5 EN 12773:1999 4.2 Needle Either a smooth-surfaced steel needle of 1 mm * 0,Ol mm diameter or a corresponding piece of spring steel wire, ground to a point. 4.3 Clamping device Figure 1 shows an example of a clampi
23、ng device. The distance between the support links for the needle shall be adjustable, so that it can be adjusted to the thickness of the specimen. The clamping device shall be equipped with a suitable protective device to prevent the needle from jumping out. 4.4 Thickness gauge Thickness gauge, stan
24、ding on a firm base and loaded with a dead weight such that the presser foot applies a pressure of 10 kPa A 3 kPa. The gauge has a presser foot which is flat, circular and 1 O mm f O, 1 mm in diameter. The gauge has a scale division of 0,Ol mm. 5 Sampling and conditioning The test pieces to be teste
25、d are taken in accordance with prEN 13400:1998. All test pieces shall be conditioned according to EN 12222 before testing for a minimum of 24 h. Test pieces are strips of 50 mm * 1 mm length and 20 mm f 1 mm width. The thickness of the test piece shall be preferably: - 2,O mm f 0,2 mm for polymeric
26、and elastomeric compact outsoles; - 4,O mm f 0,2 mm for semi-expanded and cellular outsoles; - for leather outsoles the original thickness shall be tested. The test is being performed with at least three specimens. Their uniform thickness (see specification below) shall be obtained by means of an ap
27、propriate splitting machine. If feasible, smooth original “skin” surfaces of the sample shall remain unchanged in the specimens. This leads to three possible types of specimen: Specimen with 2 original “skins” - S 2 Specimen with 1 original “skin” - S 1 Specimen with no original “skin” - S O The fin
28、al result shall be based only on specimens of the same type, which shall be stated in the report. OBSI 02-2000 _ STD-BSI BS EN 12773-ENGL 2000 W 1b24bb9 0830253 024 W Page 6 EN 12773: 1 999 6 Test method Measure the thickness of the test piece, using the thickness gauge (see 4.4). Pierce the piece w
29、ith a needle of 1 mm diameter (see 4.2), 5 mm from the edge at the centre of the narrow side (see Figure l), as nearly perpendicular as possible with the aid of a template. The piece shall not have been previously bored or punched. Place the needle, which is now stuck in the piece, in the clamping d
30、evice (see 4.3). The distance between the support links shall be adjusted so that they just touch the piece. Clamp the lower end of the piece in the lower grip (shown in Figure 1 as a scissors-clamp). Stress the piece with a feed-rate of 100 mm/min f 10 mdmin on the clamps. Read off the maximum stre
31、ngth in newtons which occurs during the tearing-out of the needle. 7 Expression of results The needle tear strength Ss expressed in newtons per millimetres of thickness is given by the formula Ss = F/d where F is the maximum force in newtons d is the thickness in millimetres The result will be the a
32、verage of the three determinations. 8 Testreport The test report shall include the following information: results, expressed in accordance with clause 7; thickness of the test pieces; full description of the samples tested including commercial styles, codes, colours, nature, etc.; reference to this
33、method of test; date of testing; any deviation from this test method. OBSI 02-2000 STD*BSI BS EN 12773-ENGL 2000 W 1624667 0830254 ThO Page 7 EN 12773: 1999 Dimensions in mm Support links ieedle Figure 1 - Example of clamping device OBSI 02-2000 STD-BSI BS EN L2773-ENGL 2000 Lb24669 0830255 9T7 BS E
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