1、January 2013 Translation by DIN-Sprachendienst.English price group 8No part of this translation 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
2、 61.060!$k“1936172www.din.deDDIN EN ISO 16177Footwear Resistance to crack initiation and growth Belt flex method (ISO 16177:2012);English version EN ISO 16177:2012,English translation of DIN EN ISO 16177:2013-01Schuhe Bestndigkeit gegen Risserzeugung und Risswachstum Verfahren mit flexiblem Band (IS
3、O 16177:2012);Englische Fassung EN ISO 16177:2012,Englische bersetzung von DIN EN ISO 16177:2013-01Chaussures Rsistance la fissuration et sa croissance Mthode de flexion de la ceinture (ISO 16177:2012);Version anglaise EN ISO 16177:2012,Traduction anglaise de DIN EN ISO 16177:2013-01www.beuth.deDocu
4、ment comprises 13 pagesIn case of doubt, the German-language original shall be considered authoritative.12.12DIN EN ISO 16177:2013-01 2 A comma is used as the decimal marker. This document (EN ISO 16177:2012) has been prepared by Technical Committee CEN/TC 309 “Footwear” (Secretariat: AENOR, Spain)
5、in collaboration with Technical Committee ISO/TC 216 “Footwear”. The responsible German body involved in its preparation was the Normenausschuss Materialprfung (Materials Testing Standards Committee), Working Committee NA 062-04-52 AA Schuhe. The DIN Standards corresponding to the International Stan
6、dards referred to in this document are as follows: ISO 19952 DIN EN ISO 19952 ISO 20344 DIN EN ISO 20344 National Annex NA (informative) Bibliography DIN EN ISO 19952, Footwear Vocabulary DIN EN ISO 20344, Personal protective equipment Test methods for footwear National foreword EUROPEAN STANDARD NO
7、RME EUROPENNE EUROPISCHE NORM EN ISO 16177 October 2012 ICS 61.060 English Version Footwear - Resistance to crack initiation and growth - Belt flex method (ISO 16177:2012) Chaussures - Rsistance la fissuration et sa croissance - Mthode de flexion de la ceinture (ISO 16177:2012) Schuhe - Bestndigkeit
8、 gegen Risserzeugung und Risswachstum - Verfahren mit flexiblem Band (ISO 16177:2012) This European Standard was approved by CEN on 30 September 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status
9、 of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, Germ
10、an). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia
11、, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and Unit
12、ed Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 16177:20
13、12: EEN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 2Contents Page Foreword 3 1 Scope 4 2 Apparatus and materials . 4 3 Principle 5 4 Preparation of test specimens . 5 5 Procedure 7 6 Test report 9 Bibliography 1 1Foreword This document (EN ISO 16177:2012) has been prepared by Technical Committee CE
14、N/TC 309 “Footwear”, the secretariat of which is held by AENOR, in collaboration with Technical Committee ISO/TC 216 “Footwear“. 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 April 2013, and con
15、flicting national standards shall be withdrawn at the latest by April 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According
16、to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Gree
17、ce, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. EN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 3 1 ScopeThis International Standard specifies a t
18、est method for determining the resistance of a component or material to crack initiation and growth due to repeated flexing. The method is mainly applicable to outsoles of footwear but may also be used with certain other flexible components.2 Apparatus and materials2.1 Flexing machine with:2.1.1 Fre
19、e wheeling, slightly crowned flexing roller, with a width of (170 20) mm and for high performance soles, diameter at its centre (60,0 0,5) mm,diameter at its ends (57 1) mm;NOTE This roller will normally only be used for footwear which is expected to be subjected to abnormally high flexing demands.
20、for typical sole units,diameter at its centre (90,0 0,5) mm,diameter at its ends (87 1) mm; for soles with a thickness greater than 15 mm,diameter at its centre (120,0 0,5) mm,diameter at its ends (117 1) mm.2.1.2 Driven, slightly crowned roller, with a diameter of (225 5) mm and a width of (170 20)
21、 mm.2.1.3 Flexible continuous belt of cotton canvas of length (1 930 50) mm and width (140 5) mm which passes over the two rollers (2.1.1) and (2.1.2). The cotton canvas is 2-ply 100 % cotton belting having a mass per unit area of (500 25) g/m2and an extension at break along the belt of (14 2) % at
22、a breaking force of (2 000 200) N. The corresponding across-the-belt values are (14 2) % and (750 50) N.2.1.4 Means of driving the larger roller (2.1.2) at a speed of (247 20) r/min so that the belt (2.1.3) completes (90 8) flexing cycles per minute.2.1.5 Method of counting the number of cycles comp
23、leted by the belt (2.1.3).2.2 Polyurethane adhesive system to bond the test specimen to the surface of the belt (2.1.3), consisting of:2.2.1 Pre-reacted PU adhesive.2.2.2 Single-component PU adhesive.EN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 42.3 Cutting device, such as a sharp knife or scalpel
24、, capable of cutting test specimens.2.4 Smooth-surfaced hand tool for the application of localized pressure by a rubbing action.NOTE A rapid acting platen press with the capability of applying a pressure of (500 50) kPa over the whole area of the test specimen may be suitable for some types of sole
25、specimen.2.5 Means of heating adhesive film, for activating adhesive film or removing samples from the belt. This can be achieved by using a hot air gun or an oven set at 50 C. Heat should be applied in short bursts to prevent partial melting of soles.NOTE Commercial equipment for heat reactivating
26、outsoles and uppers in production is suitable.2.6 Method of checking that the temperature of the adhesive film is within the range between 80 C and 90 C. Heat sensitive crayons, such as Tempilstik1), are suitable, preferably with a melting temperature of 83 C.2.7 Primers.2.7.1 Vulcanized and thermop
27、lastic rubber test specimens. A halogenation primer for rubber will be necessary for producing satisfactory bonds.2.7.2 EVA test specimens. An EVA primer will be necessary for producing satisfactory bonds.2.8 Device, such as a T square, with an internal angle of (90 1).2.9 Device for checking whethe
28、r the depth of a crack is greater than 1,5 mm. A thin strip of metal with a length scale or stepped thickness is suitable.3 PrincipleA test specimen is bonded with a strong adhesive to a continuous belt, which is driven around two rollers. The spacing and radius of the rollers is such that the test
29、specimen is repeatedly subjected to a short period of rapid flexing followed by a longer period unflexed as the belt passes around the rollers, which simulates the wear conditions of a footwear outsole. The specimen is flexed for a fixed number of cycles and the number of cracks that form and their
30、severity is recorded.4 Preparation of test specimens4.1 If the test specimen has been moulded, then the time between moulding and testing should be at least 48 h.4.2 If the test specimen is an outsole attached to a made item of footwear: cut off the upper just above the level of the insole; remove t
31、he insole; scour or rough away the lasted margin of the upper, taking care not to damage the outsole; check for the presence of a metallic penetration-resistant insert.Do not use heat to soften the bond of the outsole to the upper as this may damage the outsole.1) Tempilstik is an example of a suita
32、ble product available commercially. This information is given for the convenience of users of this International Standard and does not constitute an endorsement by ISO of this product.EN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 5 4.3 Mark the toe-heel centre line on the outer surface of the outso
33、le as follows.4.3.1 Place the points A and B (see Figure 1) on the inside edge of the outsole against the longer edge of the T square (2.8) and the toe against the shorter edge.Key1 cut as described in 4.4Figure 1 Marking and cutting of test specimen (see also Figure 42 of ISO 20344:2011)4.3.2 Make
34、a mark on the toe at the point that is in contact with the shorter edge of the T square.4.3.3 Repeat the procedure described in 4.3.1 and 4.3.2 for the heel of the test specimen.4.3.4 Mark a line between the point at the heel and the point at the toe, XY in Figure 1.4.4 Cut off the heel and part of
35、the waist portion so as to leave 10mm to 20 mm length of the waist on the forepart (see Figure 1).4.5 If the edge of the forepart on the reverse side is cupped or includes any form of rand or imitation welt, scour this off until this surface is flat. Do not remove ribs in the central section of the
36、outsole on the reverse side.4.6 For outsoles which are thicker than 15 mm, reduce the thickness to 15 mm before preparation in order to ensure reasonable flexibility. In such cases, it will be necessary to use the 120 mm diameter flexing roller (2.1.1). Outsoles containing a metal insert are also te
37、sted using the 120 mm roller.NOTE To help prevent thick soles peeling from the belt during the test, it is acceptable to taper the thickness at the extreme ends of the specimen (toe and waist) by scouring material away from the outside surface for a length of not more than 2,5 cm from each end, whic
38、h will alleviate the flexing stress on the bond.4.7 Prepare the reverse side of the forepart for bonding as follows.4.7.1 Cellular polyurethane outsoles: lightly scour the whole of the surface.4.7.2 Vulcanized and microcellular rubber: lightly scour the whole of the surface, then scrub it with a hal
39、ogenation primer for rubber (2.7) using a stiff brush. Leave to dry for between 15 min and 8 h before applying any adhesive.4.7.3 Thermoplastic rubber: lightly coat the whole of the reverse surface with a halogenation primer for rubber (2.7) using a soft brush. Leave to dry for between 30 min and 8
40、h before applying any adhesive.4.7.4 Microcellular EVA: lightly scour the whole of the reverse surface, then coat it with an EVA primer (2.7) using a soft brush. Leave to dry for between 30 min and 8 h before applying any adhesive.EN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 64.7.5 PVC and solid (
41、thermoplastic) PU: wipe the whole of the reverse surface with butan-2-one (methyl ethyl ketone, MEK). Leave to dry for between 15 min and 1 h before applying any adhesive.5 Procedure5.1 In order to prepare the belt for test, proceed as follows.5.1.1 Cut a strip of cotton canvas fabric (140 5) mm (2
42、000 20) mm, and mark its centre on both sides.5.1.2 Draw two lines across the strip of fabric (see Figure 2): at 90 to the longer edges of the strip; one line (930 3) mm on either side of the centre of the strip; one line on the upper surface and the other on the lower surface.Dimensions in millimet
43、resNOTE Line AB should be drawn on the opposite surface to line XY.Figure 2 Diagram for marking lines on the belt5.1.3 A belt used for previous tests can be reused provided that it is not excessively frayed and there is a sufficiently large unused area for the new test specimens.5.2 Place the specim
44、ens to be tested (see Figure 3) onto the belt so that: their wearing surfaces are uppermost; they are evenly spaced between the two lines (5.1.2); they are no closer than 50 mm to each other or the lines (5.1.2); they are centred across the width of the belt; their toes are pointing in the same dire
45、ction; their centre line (4.3.4) is parallel to the longer edge of the belt; they do not cover any previously used areas of the belt.EN ISO 16177:2012 (E) DIN EN ISO 16177:2013-01 7 Dimensions in millimetresKey1 adhesive applied to the same surface as line AB2 adhesive applied to the same surface as
46、 line XYNOTE AB and XY are on opposite surfaces.Figure 3 Diagram for placing the specimens on the belt5.3 Mark the perimeter of each test specimen on the belt.5.4 Apply the pre-reacted adhesive (2.2.1) to the surface of the belt over: the whole area of each of the marked specimen positions; the area
47、 between the lines (5.1.2) and the ends of the belt (on opposite surfaces at one end to the other).5.5 Apply a coat of the PU adhesive (2.2.2) to: the prepared surface of each test specimen; the areas of the belt coated as described in 5.4;and leave to dry for about 15 min.5.6 Use the heater (2.5) t
48、o heat the adhesive on one of the test specimens to a temperature of between 80 C and 85 C, as indicated by the crayon (2.6). At the same time, heat the corresponding area of the belt to be bonded to the same temperature.5.7 Immediately position the test specimen on the corresponding warmed area of the belt so that the specimen is aligned with its previously drawn outline (5.3). Apply enough pressure by hand to bond the specimen to the belt.NOTE This can be achieved by turning the belt over and applying localized pressure to th
