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1、BRITISH STANDARD BS EN ISO 19957:2004 Incorporating Amendment No. 1 Footwear Test methods for heels Heel pin holding strength The European Standard EN ISO 19957:2004 has the status of a British Standard ICS 61.060 ? Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Unco
2、ntrolled Copy, (c) BSI BS EN ISO 19957:2004 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 24 September 2004 BSI 25 October 2004 ISBN 0 580 44501 1 National foreword This British Standard is the official English language version of EN ISO 19
3、957:2004. It is identical with ISO 19957:2004. It supersedes BS 5131-4.20:1985 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear and leather, which has the responsibility to: A list of organizations represented on this committee can be
4、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 Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facil
5、ity of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations
6、. aid enquirers to understand the text; present to the responsible international/European committee 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. Summary of page
7、s This document comprises a front cover, an inside front cover, the EN ISO 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. Amendments issued since publication Amd. No. DateComments 15401
8、25 October 2004Correction of National foreword Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 19957 September 2004 ICS 61.060 English version Footwear - Test methods for heels - Heel
9、pin holding strength (ISO 19957:2004) Chaussures - Mthodes dessai relatives aux talons - Rsistance larrachement de pointe talon (ISO 19957:2004) Schuhe - Prfverfahren fr Abstze - Absatznagel- Haltefestigkeit (ISO 19957:2004) This European Standard was approved by CEN on 2 March 2004. CEN members are
10、 bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to t
11、he 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 translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same sta
12、tus as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Sloven
13、ia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2004 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN na
14、tional Members. Ref. No. EN ISO 19957:2004: E Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 19957:2004 (E) 2 Contents page Foreword3 1 Scope 4 2 Normative references4 3 Terms and definitions .4 4 Apparatus and material.4 5 Sampling
15、and conditioning.5 6 Test method6 7 Expression of results 7 8 Test report8 Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 19957:2004 (E) 3 Foreword This document (EN ISO 19957:2004) has been prepared by Technical Committee CEN /TC 30
16、9 “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 March 2005, and conflictin
17、g national standards shall be withdrawn at the latest by March 2005. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland,
18、France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy
19、, (c) BSI EN ISO 19957:2004 (E) 4 1 Scope This European Standard specifies a test method for measuring the force required to pull a single heel pin out of a heel. This test method can be used to measure the heel pin holding strength of heel materials by using a standard heel pin and a method of inse
20、rtion, or it can be used to assess the heel nailing of commercial production. This test method is applicable to testing plastics and wooden heels for womens footwear. Heels composed of layers of fibreboard or leather and low plastics heels for mens footwear cannot be tested by this method. 2 Normati
21、ve 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. EN ISO 7500-1, Metallic materials -
22、 Verification of static uniaxial testing machines - Part 1: Tension/compression testing machines (ISO 7500-1:1999). 3 Terms and definitions For the purposes of this European Standard, the following term and definition apply. heel pin holding strength force required to pull a standard pin out of the
23、heel material divided by the effective length of pin buttressing in the material, expressed as N/mm 4 Apparatus and material 4.1 The following apparatus and material shall be used: 4.2 Tensile testing machine complying with the requirements of EN ISO 7500-1 class 2, with a range of approximately 0 N
24、 to 2000 N and a constant rate of speed of 40 mm/min 10 mm/min. NOTE A constant rate of traverse tester can be used if this is of a type where increase of load produces an appreciable movement of the load jaw (e.g. a pendulum tester). Its rate of traverse should be set to give on average the specifi
25、ed rate of loading over the whole range for zero jaw separation. This approximation to constant rate of loading is acceptable because the amount of jaw separation in the test is small before the maximum load is reached. 4.3 Small clamp or slotted hook, which can be attached to one jaw of the tensile
26、 testing machine via a flexible coupling. 4.4 Commercial heel nailing machine. 4.5 Standard heel pin (see Figure 1), with the following dimensions: a) length: 18 mm 0,5 mm; b) diameter over the buttress ridges: 1,9 mm, minimum; c) number of complete formed buttress pressure flanks (the side of the b
27、uttress which is nearly at right angles to the pin shaft): 13 minimum; d) distance from point to the base of the first fully formed buttress groove at the head end: 12 mm, minimum. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 19957
28、:2004 (E) 5 Dimensions in millimetres Key 1 Minimum of 13 fully formed buttress flanks Figure 1 Standard heel pin 4.6 Metal rod 5 Sampling and conditioning 5.1 Number of test specimens For assessing the heel pin holding properties of a heel material, prepare and test three heels each containing six
29、inserted pins, or, if it is not possible to insert six pins, four heels each containing four pins. When testing heels already attached to shoes, where possible, also prepare three containing six pins or four containing four. 5.2 Preparation 5.2.1 To measure heel pin holding properties of heel materi
30、als. Cut from 2 mm thick cellulose insole forepart board three discs per heel of diameter about 45 mm. These take place of a single layer of insole seat board because they are easier to remove after pin insertion. Use a stand on the heel nailing machine which will insert six pins in two rows of thre
31、e (or four pins in two rows of two) so that the adjacent pins in a row are 10 mm apart. Set the machine to insert a standard heel pin and load the stand with six (or four) of the standard heel pins. Position a stack of three fibreboard discs centrally over the heel pin positions of the heel stand wi
32、th the heel inverted on top. Adjust the machine to hold that shape of heel securely and operate it to insert the heel pins. If any of the heel pins do not pass through the cellulose board discs, discard the heel and prepare another heel. Remove the cellulose discs carefully one by one using pincers
33、and a knife. The discs shall be cut to allow easy removal in those cases where they are not soft enough to be pulled over the heads of the heel pins without the pincers pressing on other heel pins. When all three discs are removed the length of pin not inserted (including the head) shall be between
34、5 mm and 8 mm. If it is outside these limits, reject the heel and prepare a new one with the machine adjusted to produce the desired depth of penetration. 5.2.2 To test a made shoe. Cut away the upper at the seat and waist level with the insole. Cut through the sole and insole forward of the shank,
35、and the sole and lasted margin forward of the heel breast. The seat board is too Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 19957:2004 (E) 6 thick and rigid to be pulled off the heel pins in one piece, but it can be removed gradu
36、ally by splitting it from the edge and removing it in layers. NOTE If the heel is not made of wood, the seat board can be wetted if necessary to assist in producing delamination. If washers have been used with any of the heel pins, these can be left on as they do not affect the test. 5.2.3 Attachmen
37、t to tensile testing machine. For heels prepared in the laboratory and those from shoes, drill through the heel horizontally, from side to side, at the position shown in Figure 2 (which illustrated a six pin heel) so that the hole is large enough to take a 2 mm rod. When the heel design is markedly
38、undercut at the back, it may be necessary to drill the hole between 15 mm and 20 mm from the top of the heel (instead of the 20 mm to 25 mm shown in Figure 2) in order to ensure that the heel material between the hole and the back of the heel is strong enough to enable a test to be carried out. In s
39、uch cases, record the distance of the hole from the top of the heel. In the case of a four pin heel, drill the hole to lie on the line which is perpendicular to the heel seat and midway between the two pins on one side. If the heel is reinforced with a metal dowel ensure that the drilled hole avoids
40、 it, by slight repositioning if necessary. Key 1 Drilled hole to just clear 2 rod 2 20 mm to 25 mm Figure 2 Prepared heel 6 Test method 6.1 Principle The head of a heel pin is held in one jaw of a tensile testing machine and the heel in the other and a pulling force is applied approximately parallel
41、 to the shaft of the pin. Then the maximum force needed to remove the pin is recorded. 6.2 Procedure 6.2.1 Anchor the heel by inserting a metal rod through the hole drilled in the heel and linking the ends of the rod symmetrically to one jaw of the tensile testing machine (4.2) with material of suff
42、icient tensile strength that it will not break when the test is carried out. Licensed Copy: sheffieldun sheffieldun, na, Sun Nov 19 13:45:01 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN ISO 19957:2004 (E) 7 NOTE In practice this can be achieved by inserting a rigid hole through the hole, attaching
43、flexible linkages to the two ends of the rod, and clamping them to the jaw of the tensile testing machine, or by inserting a length of 2 mm welding rod through the hole, bending the ends down and clamping them to the jaw of the tensile testing machine. 6.2.2 Attach the clamp or slotted hook (4.3) to
44、 one heel pin head and attach it via a flexible linkage to the other jaw of the testing machine ensuring that the pulling force is approximately parallel to the shaft of the pin. 6.2.3 Run the machine at a constant rate of loading of 40 mm/min 10 mm/min and record the maximum value of the load appli
45、ed in pulling the pin out of the heel. Number the test position on the heel and the result so that the two may be linked when examining all the results. Test the other five (or three) pins in that heel, and the other two (or three) heels in the same way. 6.2.4 Measure the depth of each hole by inser
46、ting a fine wire. Grip the wire at the level of the heel surface, withdraw it and measure the length of wire in the hole to the nearest 0,5 mm. Record the depth with the pull out rod. 6.2.5 Cut each heel in two with a vertical cut along the heel/toe centreline so that the plastics near the tips of t
47、he pin holes may be seen. If the heel is reinforced with a metal dowel, make two such cuts, one on each side of the dowel. 6.2.6 Inspect the pin holes. A pin is considered to have been incorrectly inserted if, after insertion, it terminated in a cavity in the heel or was close to a cavity wall. The
48、pin is considered to have been close to a cavity wall when the shape of that cavity has been modified as a consequence of the presence of the pin (for example, if the pin was sufficiently close to the cavity wall that the pin did not enter the cavity but caused the plastics to bulge into the cavity)
49、. Should there proves to be fewer than twelve individual valid results for correctly inserted pins, test further heels until at least twelve such results are obtained. 7 Expression of results 7.1 Heel pin holding strength of the heel material The heel pin holding strength, h, in N/mm, is given by the equation: h = F / d 4 where F is the maximum load recorded in pulling the pin from the heel, in N; d is the measured depth of the hole, in mm. NOTE Th