1、| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | BRITISH STANDARD BS EN 12772:2000 The Euro
2、pean Standard EN 12772:1999 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 Dimensional stabilityThis British Standard, having been prepared under the direction of the Sector Committee for Mater
3、ials 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 35617 5 BS EN 12772:2000 Amendments issued since publication Amd. No. Date Comments National foreword This British Standard is the official English langua
4、ge version of EN 12772:1999. It supersedes BS 5131-2.10:1991 which is withdrawn. 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 commi
5、ttee any enquiries on the interpretation, or proposals 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-refer
6、ences 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 Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catal
7、ogue. 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 Standard does not of itself confer immunity from legal obligations. Summary of pages This document comp
8、rises a front cover, an inside front cover, the EN title page, pages 2 to 8, an inside back cover 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 or b) a travelling microscope or similar optical
9、device with scale. 4.5 Thickness gauge Thickness gauge, standing on a firm base and loaded with a dead weight such that the presser foot applies a pressure of 10 kPa 3 kPa. The gauge has a presser foot which is flat, circular and 10 mm 0,1 mm in diameter, as defined in ISO 4648. The gauge has a scal
10、e division of 0,01 mm. 5 Sampling and conditioning The test pieces to be tested are taken in accordance with prEN 13400:1998. All test pieces shall be conditioned in accordance with EN 12222, before testing for a minimum of 24 h. The test samples with the full thickness of the outsoles shall be test
11、ed. A minimum of three test pieces is necessary. 6 Test method 6.1 Test specimen piece Using a scalpel or other sharp knife (4.2) and a steel rule (4.1), cut the test specimens to the dimensions and tolerances given in Figure 1. Make two parallel reference cuts on the external surface not more than
12、0,5 mm deep across the full width of the test specimen on each side of it, 100 mm 5 mm apart for the larger test specimen and 50 mm 5 mm apart for the smaller test specimen.3DJH (1 %6, 6.2 Measurement before heat treatment (L 0 ) Measure to within 0,2 mm the distance between the reference cuts along
13、 the centreline. 6.3 Heat treatment Place the test specimens horizontally (supported in such a way as to ensure adequate air ventilation on all sides) in the oven (4.3) for 24 h 0,5 h at the temperature of 70 C 2 C. 6.4 Measurement after heat treatment (L) Remove the test specimen from the oven at t
14、he end of the period of heat treatment. Keep the test specimens for at least 30 min in a standard atmosphere. If the test specimens are bowed, hold them flat for measurement. If the measuring cuts have widened, take the point of the measurement as the centre of the cut. Measure to within 0,2 mm the
15、distance between these cuts along the centreline as described in Figure 1 using an appropriate device. 7 Expression of results For each test specimen, calculate the shrinkage of the distance between the reference cuts produced by the heat treatment and express this as a percentage of the original di
16、stance. The worst of the three values will be the result. Shrinkage S, in %, is to be calculated using the formula: - = / / / 6 where L 0 is the original distance between the reference cuts in millimetres, as recorded according to 6.2; L is the distance between the reference cuts after heat treatmen
17、t, in millimetres, as recorded according to 6.4.3DJH (1 %6, 8 Test report The test report shall include the following information: a) results, expressed in accordance with clause 7; b) dimensions (including thickness) of the test specimen; c) full description of the samples tested including commerci
18、al styles, codes, colours, nature, etc.; d) reference to this method of test; e) date of testing; f) any deviations from this test method; g) the age of the sample.3DJH (1 %6, Dimensions in mm Figure 1 - Long and short test specimens for shrinkage, showing dimensions and positions of reference cutsb
19、lankBS EN 12772:2000 BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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