ISO 15797:2002 pdf download

ISO 15797:2002 pdf download.Textiles – Industrial washing and finishing procedures for testing of workwear.
c) Diameter of cage: 750 mm to 850 mm.
ci) Depth of cage: 400 mm to 600 mm.
e) Ratio (diameter of cage to depth of cage): 1,5 + 15 %.
f) Dead volume: 101 to 201.
g) Lifting vanes (ribs): three; each having a height 10% to 12% of diameter of cage; base width < 100 mm. h) Heating: direct steam, thermostatically controlled. i) g-factors: wash 0,75 ± 10 %; drain 0,75 ± 10 %; interspin 50 to 100; final extraction 250 to 350. j) Programmable extract speeds. k) Reversible action, 5 to 10 revolutions in one direction, then reverse. I) Time rotating at full washing speed to total washing time: 80 %. 5.2 Tumble dryer a) Air vented batch drying tumbler with a system for detecting the moisture content of the exhaust air to a tolerance of ±5%. b) Thermostatically-controlled heating. c) Diameter of cage: 900 mm to 1100 mm. d) Depth of cage: 630 mm to 1 000 mm. e) Cagevolume:600 Ito 7201. f) g-factor:0,7to 1,0. g) Reversing action: yes. h) Nominal evaporation rate: 45 I/h ± 20 %. i) Radial airstream: yes. j) Perforated drum: yes. k) Perforated cage: yes. 5.3 Finisher a) Batch-loaded steam cabinet. b) Capacity: 8 to 18 pieces/garments. c) Spray steam pressure: 2 bar to 5 bar (200 kPa to 500 kPa). d) Specific volume flow (within cabinet): 6 900 m3/m2 h to 8 900 m3/m2 h. e) Direction of air flow: top to bottom. f) Temperature setting: adjustable. g) Inlet temperature: 160°C option required. h) Distance from hanger to hanger: 75 mm ± 10 mm. 5.4 Loading ballast Consisting of clean workwear garments (lab coats, bib and brace, overalls, jackets, trousers and boilersuits) not previously washed more than 100 times and similar to the type of garment and fabric of the specimen (e.g. polyester/cotton or cotton), and the colour (e.g. white, coloured or fluorescent coloured). In cases where the ballast material may have a significant influence on the test result, the whole loading ballast shall consist of the specimen material, e.g. when testing contrasting colours or multicoloured material in textiles. 8.3 Use water as specified in 6.5. Add detergent and additives according to selected washing procedure. Reference detergent 6.1.1, with optical brightener, may be used except when colour fastness is being assessed. 8.4 Acetic acid can be used in the last rinse process to adjust the pH value of the specimen. If acetic acid is used it shall be reported together with the pH value of the dried specimen (measured in accordance with ISO 3071). 8.5 After the final extraction of the washing procedure has been completed, remove the specimens, taking care that they are neither stretched nor distorted. Determine the mass of the washed specimens in order to enable calculation of moisture retention of specimens according to washing procedure. Moisture content retained of the textile shall be: R is the moisture retention of the textile, expressed as a percentage of conditioned mass; rn1 is the mass of the conditioned textile specimens in kilograms; is the mass of the textile specimens after extraction in kilograms. 8.6 Dry the entire load by one of the drying/finishing procedures described in clause 9. 9 Drying procedure 9.1 Procedure A — Tumble drying Place the entire load (load ratio 1:25 to 1:35) in the tumble dryer (5.2) with the outlet temperature from the drum set not to exceed 90 °C. Operate the dryer until the load is dry, and continue tumbling for 5 mm with the heat turned off (cool down). The load is dry when the final moisture content related to the conditioned specimens is 0 ± 3 %. Remove the load immediately. 9.2 Procedure B — Tunnel/cabinet finishing Place specimens, with appropriate hangers, in the pre-heated steam cabinet (5.3). The steam cabinet shall be operated with full content and with at least one piece of ballast at the ends. The finisher shall be set at 155 °C air temperature and operating time of a minimum 4 mm. When the readings of the temperature at the inlet are not automatically measured and shown on the control panel display, the ambient air temperature shall be measured with a temperature sensor in the upper part of the drying chamber. Spray steam shall be applied for between one minute and one third of the total finishing time. The load is dry when the load temperature reaches 135°C to 140 °C. The temperature of the test specimen shall be measured using a temperature sensor at a distance of 150 mm to 200 mm from the top edge of the hanger (see annex A). A continuous tunnel finisher may be used to provide additional information about the attributes of the specimens. Deviations from the operating conditions in 5.3 shall be reported in clause 10 e) and 10 k).