1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12773:2000 The Euro
2、pean Standard EN 12773:1999 has the status of a British Standard ICS 61.060 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Footwear Test methods for outsoles Needle tear strengthThis British Standard, having been prepared under the direction of the Sector Committee for Materi
3、als and Chemicals, was published under the authority of the Standards Committee and comes into effect on 15 February 2000 BSI 02-2000 ISBN 0 580 35616 7 BS EN 12773:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the official English languag
4、e version of EN 12773:1999. The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear and leather, which has the responsibility to: aid enquirers to understand the text; present to the responsible European committee any enquiries on the interpretation, or proposal
5、s for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement internati
6、onal or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include
7、all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the EN ti
8、tle page, pages 2 to 7 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued.(8523($167$1$5 1250(8523e(11( (8523b,6 4,0 mm 0,2 mm for semiexpanded and cellular outsoles; for leather outsoles the original thickness shall be tested. The test
9、is being performed with at least three specimens. Their uniform thickness (see specification below) shall be obtained by means of an appropriate splitting machine. If feasible, smooth original “skin” surfaces of the sample shall remain unchanged in the specimens. This leads to three possible types o
10、f specimen: Specimen with 2 original “skins” S 2 Specimen with 1 original “skin” S 1 Specimen with no original “skin” S O The final result shall be based only on specimens of the same type, which shall be stated in the report.3DJH (1 %6, 6 Test method Measure the thickness of the test piece, using t
11、he thickness gauge (see 4.4). Pierce the piece with a needle of 1 mm diameter (see 4.2), 5 mm from the edge at the centre of the narrow side (see Figure 1), as nearly perpendicular as possible with the aid of a template. The piece shall not have been previously bored or punched. Place the needle, wh
12、ich is now stuck in the piece, in the clamping device (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 feedrate of 100 mm/min 10 m
13、m/min on the clamps. Read off the maximum strength in newtons which occurs during the tearingout of the needle. 7 Expression of results The needle tear strength S sexpressed in newtons per millimetres of thickness is given by the formula S s= F/d where F is the maximum force in newtons d is the thic
14、kness in millimetres The result will be the average of the three determinations. 8 Test report The test report shall include the following information: a) results, expressed in accordance with clause 7; b) thickness of the test pieces; c) full description of the samples tested including commercial s
15、tyles, codes, colours, nature, etc.; d) reference to this method of test; e) date of testing; f) any deviation from this test method.3DJH (1 %6, Dimensions in mm Figure 1 - Example of clamping deviceBS EN 12773:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | |
16、 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BSI British Standards Institution BSI is the independent national body responsible for pr
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