ISO 17699:2003 pdf download

ISO 17699:2003 pdf download.Footwear -Test methods for uppers andlining -Water vapour permeability and absorption.
5.1.4 Mark each test specimen with a unique reference code.
5.1.5 Store the cut test specimens in a standard controlled environment specified in EN 12222 for at least 24 h prior to testing and carry out the test in this atmosphere.
5.1.6 Carry out 20 000 cycles according to EN 13512.
5.2 Water vapour absorption test method
5.2.1 If the test is being carried out to assess a single material, then cut two circular test specimens with a diameter of 45 mm ± 5 mm.
For sheet materials, cut test specimens from a range of positions across the full usable width and length of the sheet material. For a material with a woven structure this should prevent any two specimens containing the same warp or weft threads.
5.2.2 If the test is being carried out to assess a composite assembly of materials used in a complete product, such as a lined shoe, then cut two circular test specimens, with a diameter as specified in 5.2.1, from each of the materials used in this assembly.
5.2.3 For test specimens cut from footwear uppers avoid any areas containing seams or perforations and any other design features which mean that the test specimen will not be of uniform thickness across its entire surface area.
NOTE It may not be possible to cut a test specimen of sufficient size from certain types of footwear, especially children’s and the test specimen size should not be reduced. If it is not possible to cut the correct size test specimen from a shoe upper the materials themselves must be tested.
5.2.4 Mark each test specimen with a reference number.
5.2.5 Store the test specimens in a standard conditioned environment as specified in EN 12222 for at least 24 h before starting the test.
5.2.6 Carry out 20 000 cycles according to EN 13512.
6 Test method
6.1 Water vapour permeability test method
6.1.1 Principle
A circular test specimen is clamped across the open end of a test pot containing a moisture absorbing desiccant. Air of specified humidity and temperature is blown over the test specimen at a set velocity. The air within the pot is circulated by moving the pot which agitates the desiccant. After a measured time the mass of water vapour transmitted through the test specimen is determined and the water vapour permeability of the material calculated.
6.1.2 Procedure
6.1.2.1 Pour freshly dried silica gel (see 4.1.4) into one of the pots (see 4.1.1) until it is half full.
6.1.2.2 Place a test specimen centrally over the open end of the pot prepared in 6.1.2.1 so that the surface which would be closer to the source of water vapour in the final product is uppermost. For example if assessing the perspiration transmission properties of a footwear upper material, then the surface which will be nearer to the foot should be uppermost.
6.1.2.3 Fit a clamping ring (see 4.1.1.2) centrally over the top of the test specimen and tighten the ring so that the test specimen is securely held around its edges and the pot is sealed.
6.1.2.4 Repeat the procedure in 6.1.2.1 to 6.1.2.3 for the remaining two test specimens.
6.1.2.5 Place each filled test pot onto the turntable (see 4.1.2.1) and operate the test machine for 20 h ± 4 h.
This is to condition the test specimens.
6.1.2.6 Remove each of the test pots from the turntable.
6.1.2.7 For each test pot and as quickly as possible remove the clamping ring to release the test specimen, pour away the silica gel from inside the pot, refill the pot with a similar amount of freshly dried silica gel and replace the test specimen and clamping ring on the pot by repeating the procedure in 6.1.2.2 and 6.1.2.3
6.1.2.8 With the minimum of delay use the balance (see 4.1.3) to measure the combined mass of each test pot, silica gel and test specimen assembly, and record these values as M0 to the nearest 1 mg. Record the time that these measurements were made as T0.
6.1.2.9 Replace the test pots on the turntable and start the machine.
6.1 .2.10 After 11,5 h ± 4,5 h stop the test machine and remove the test pots from the turntable.
6.1 .2.11 With the minimum of delay use the balance to measure the combined mass of each of test pot, silica gel and test specimen assembly, and record these values as M1 to the nearest 1 mg. Also record the time that these measurements were made as T1.
6.2 Water vapour absorption test method
6.2.1 Principle
Either a single circular test specimen or an assembly of circular test specimens which is representative of a completed product or taken from a closed shoe upper, is clamped between an impermeable membrane and the open end of a vertical cylindrical chamber containing a specified volume of water. After a set time the mass of water absorbed by the test specimen is measured.