ISO 20345:2011 pdf free download – Personal protective equipment一Safety footwear.
5.5.2 Abrasion resistance
When tested in accordance with IsO 20344:2011, 6.12, the lining shall not develop any holes before the following number of cycles has been performed.
一For vamp and quarter lining:
一25 600 cycles when dry;
一12 800 cycles when wet.
一For seat region lining:
一51 200 cycles when dry;
-25 600 cycles when wet.
5.5.3 Water vapour permeability and coefficient
When tested in accordance with 6.6 and 6.8 of ISO 20344:2011, the water vapour permeability shall be not less than 2,0 mg/(cm2.h) and the water vapour coefficient shall be not less than 20 mg/cm2.
NOTE There is no requirement to test unlined stiffeners.
5.5.4 pH value
When leather linings are tested in accordance with ISO 20344:2011, 6.9, the pH value shall be not less than 3,2. If the pH value is below 4, the difference figure shall be less than 0,7.
5.5.5
Chromium VI content
When determined in accordance with the test method described in ISO 17075, the quantity of chromium VI in footwear containing leather shall not exceed 3,0 mg/kg.
5.6 Tongue
NOTE The tongue need only be tested if the material from which it is made or its thickness, or both, differs from that of the upper material.
5.6.1
Tear strength
When determined in accordance with ISO 20344:2011, 6.3, the tear strength of the tongue shall be in accordance with Table 16.
5.6.2 pH value
When leather tongues are tested in accordance with ISO 20344:2011, 6.9, the pH value shall be not less than 3,2. If the pH value is below 4, the difference figure shall be less than 0,7.
5.6.3 Chromium VI content
When determined in accordance with the test method described in ISO 17075, the quantity of chromium VI in footwear containing leather shall not exceed 3,0 mg/kg.
5.7 Insole and insock
5.7.1 Thickness
When determined in accordance with IsO 20344:2011, 7.1, the thickness of the insole and/or insock (see Table 3) shall be not less than 2,0 mm.
5.7.2 pH value
When leather insoles or leather insocks are tested in accordance with ISO 20344:2011, 6.9, the pH value shall be not less than 3,2. If the pH is below 4, the difference figure shall be less than 0,7.
5.7.3 Water absorption and desorption
When tested in accordance with ISO 20344:2011, 7.2, the water absorption shall be not less than 70 mg/cm2 and the water desorption shall be not less than 80 % of the water absorbed.
5.7.4 Abrasion resistance
5.7.4.1 Insoles
When non-leather insoles are tested in accordance with ISO 20344:2011, 7.3, the abrasion damage shall not be more severe than that illustrated by the reference test pieces for the same family of materials before 400 cycles (see ISO 20344:2011, 7.3.6.).
5.7.4.2 Insocks
When insocks are tested in accordance with ISO 20344:2011, 6.12, the wearing surface shall not develop any holes before the following number of cycles has been performed:
— 25 600 cycles when dry;
– 12 800 cycles when wet.
5.7.5 Chromium VI content
When determined in accordance with the test method described in ISO 17075, the quantity of chromium VI in footwear containing leather shall not exceed 3,0 mg/kg.
5.8 Outsole
5.8.1 Design
The outsole may be either cleated or non-cleated.
Outsoles with a cleat height of less than 2,5 mm are regarded as uncleated.
5.8.1.1 Thickness
The outsole can be composed of several layers. When measured in accordance with ISO 20344:2011, 8.1.2, the sole thickness, d1 and d3, shall fulfil the requirements in Table 17.