1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Footwear - Test methods for whole shoe - Upper sole adhesionBS EN ISO 17708:2018National forewordThis British Standard is the UK implementation of EN ISO 17708:2018. It is identical to ISO 17708:2018. It supersedes BS E
2、N ISO 17708:2003, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee TCI/69, Footwear A is the average width determined according to 6.2.1.Round the results off to the nearest tenth of a millimetre.NOTE For footwear where the bonding margins vary, proceed
3、 differently. Note the strength after the unsticking of 10 mm and note the corresponding assembling margin. Then, calculate the local upper-sole adhesion, Ri.Calculate the average value of Ri.7.2 Evaluation of the mode of the bond failureThe appearance of the separated areas (see 6.2.2) shall be cla
4、ssified according to the following codes.7.2.1 Separation of the adhesive film from one of the materials (defective adhesion, see Figure 6): Code AFigure 6 Defective adhesion ISO 2018 All rights reserved 7BS EN ISO 17708:2018ISO 17708:20187.2.2 Separation in the adhesive film without unsticking (def
5、ective cohesion, see Figure 7): Code CFigure 7 Defective cohesion7.2.3 Wrong joining of the two adhesive films (defective coalescence, see Figure 8): Code NFigure 8 Defective coalescence7.2.4 Delamination of material (see Figure 9): Code SFigure 9 Material delamination8 ISO 2018 All rights reservedB
6、S EN ISO 17708:2018ISO 17708:20187.2.5 Partial or complete breaking of material (see Figure 10): Code MFigure 10 Partial or complete breaking of the material8 Test reportThe test report shall include the following information:a) reference to this document, ISO 17708;b) characteristics of the sample
7、used (material, footwear type, construction type);c) values of pulling off for each individual determination (minimum, maximum, average);d) bonding margin width for each sample;e) upper-sole adhesion, in newtons per millimetre, for each sample;f) material appearance code;g) use of the ageing procedu
8、re (when applicable), as well as all the conditions or details which can have an influence on results, even if they are not recorded in this document;h) any deviation from this test method;i) date of testing. ISO 2018 All rights reserved 9BS EN ISO 17708:2018ISO 17708:2018Annex A (normative) Ageing
9、process conditions for the upper-sole bonding testA.1 GeneralThis annex defines the ageing process conditions for the test of upper-sole adhesion.A.2 PrincipleThe accelerated thermal ageing is used to determine the measured adhesion evolution according to Clause 6, to estimate the bonding quality af
10、ter ageing.A.3 SamplesClause 5 describes the preparation of samples submitted to ageing.The initial adhesion of the shoe model shall be determined in advance.A.4 ApparatusThe following apparatus shall be used.A.4.1 Circulating air oven, which can be maintained at a temperature of 50 C 2 C or 70 C 2
11、C.A.4.2 Fixture or holding device for test pieces.A.5 Accelerated ageing conditionsA.5.1 Standard ageing conditionsThe test pieces are placed in an oven with forced circulation (see A.4.1) at a temperature of 50 C 2 C for 7 days, without contact between the test pieces and the wall of the circulatin
12、g air oven.After this period and before the adhesion test, the test pieces are conditioned for 24 h according to ISO 18454.A.5.2 Production controlFor production control, it is possible to use other conditions, to have quicker results. These conditions are as follows.The test pieces are placed in an
13、 oven with forced circulation (see A.4.1) at a temperature of 70 C 2 C, for 72 h.After this period and before the adhesion test, the test pieces are conditioned for 24 h according to ISO 18454.NOTE The ageing conditions specified in A.5.1 and A.5.2 cannot give equivalent results.10 ISO 2018 All righ
14、ts reservedBS EN ISO 17708:2018ISO 17708:2018Bibliography1 ISO 20344, Personal protective equipment Test methods for footwear2 EN 344 (all parts)1), Safety, protective and occupational footwear for professional use3 EN 1392, Adhesives for leather and footwear materials Solvent-based and dispersion a
15、dhesives Testing of bond strength under specified conditions4 EN 15307, Adhesives for leather and footwear materials Sole-upper bonds Minimum strength requirements1) Withdrawn. ISO 2018 All rights reserved 11BS EN ISO 17708:2018This page deliberately left blankBSI is the national body responsible fo
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