ISO 9073-11:2002 pdf download

ISO 9073-11:2002 pdf download.Textiles一T est methods for nonwovens – Part 11: Run-off.
4.3 Sampling
Sampling shall be carried out in accordance with ISO 186.
4.4 Preparation and conditioning of test pieces
4.4.1 Cut a minimum of 5 test pieces of the nonwoven, (140 ± 2) mm x (280 ± 2) mm, with the longest side in machined direction (MD).
4.4.2 The test pieces shall be conditioned as specified in ISO 139.
4.5 Procedure
4.5.1 Adjust the angle of the table inclination to (25° ± 10’).
4.5.2 Use the spirit level (4.2.3) to ensure the top edge of the table is horizontal.
4.5.3 Set the dosing equipment for a discharge of (25,0 ± 0,5) g in (4,0 ± 0,1) s.
Verify regularly that the specified mass of liquid is being delivered by performing the following test.
Hold a clean dry pre-weighed cylinder capable of containing (25 ± 0,5) g of liquid under the glass tube (4.2.8). Activate the timer (4.2.11), collect and weigh the test liquid dispensed. If the mass dispensed is outside the limit (25 ± 0,5) g, adjust the flow by modifying the speed of the motor using the pump control box (see 4.2.10) and repeat the test. Continue testing and adjusting until at least three successive collections are within the specified limits.
4.5.4 Position the ring stand (4.2.9) and the glass tube vertically with the outlet about 27 mm above the run-off table (4.2.1), at the centre of the upper reference line.
4.5.5 Place the standard absorbent medium (4.2.5) on the table with the filter papers’ test sides up, just covering the lower reference line.
4.5.6 Handle all test pieces at the corners so as to avoid contamination of the test area.
4.5.7 Place the nonwoven test piece, test side up, on the absorbent media so that it overlaps the filter paper at the lower end, by (5 ± 1) mm.
4.5.8 Fix the absorbent medium and nonwoven with the clip (4.2.2) centered between axial position marks (see 4.2.1).
4.5.9 Adjust the vertical distance between the glass tube (4.2.8) and the test piece to (25 ± 1) mm.
4.5.10 Weigh the standard receiver pad (4.2.6) to an accuracy of 0,01 g and record the mass (mi).
4.5.11 Place the receiver pad on its support (4.2.4).
4.5.12 Start the discharge of test liquid (4.2.7).
4.5.13 Wait for 5 s after the discharge is completed.
4.5.14 Weigh the standard receiver pad with the collected run-off liquid and record the mass (m2) to an accuracy of 0,01 g.
4.5.15 Make sure the run-off table is completely dry before placing the next test piece and new absorbent medium on it.
4.5.16 Repeat the run-off test steps 4.5.3 to 4.5.15 for the remaining test pieces.
5.4.2 The test pieces shall be conditioned as specified in ISO 139.
5.5 Procedure
5.5.1 Adjust the angle of the table inclination to (25° ± 10’).
5.5.2 Use the spirit level (4.2.3) to ensure the top edge of the table is horizontal.
5.5.3 Set the dosing equipment for a discharge of (25,0 ± 0,5) g in (4,0 ± 0,1) s.
Verify regularly that the specified mass of liquid is being delivered by performing the following test.
Hold a clean dry pre-weighed cylinder capable of containing (25,0 ± 0,5) g of liquid under the glass tube (4.2.8). Activate the timer (4.2.11), collect and weigh the test liquid dispensed. If the mass dispensed is outside the limit (25,0 ± 0,5) g, adjust the flow by modifying the speed of the motor using the pump control box (see 4.2.10) and repeat the test. Continue testing and adjusting until at least three successive collections are within the specified limits.
5.5.4 Position the ring stand (4.2.9) and the glass tube vertically with the outlet about 27 mm above the table, at the centre of the upper reference line.
5.5.5 Prepare the 3 sets of standard absorbent medium (4.2.5) on a desk besides the table (4.2.1).
5.5.6 Place the standard absorbent medium on the table with the filter papers’ test sides up, just covering the lower reference line.
5.5.7 Pick up the test piece from the corners in order to avoid the contamination of the test area.
5.5.8 Place the nonwoven test piece, test side up, on the absorbent media so that the nonwoven is (5 ± 1) mm longer than the filter paper in the lower end.
5.5.9 Fix the absorbent medium and nonwoven with the clip (4.2.2) centered between axial position marks (see 4.2.1).
5.5.10 Adjust the vertical distance between the glass tube (4.2.8) and the test piece to (25 ± 1) mm.
5.5.11 Weigh the standard receiver pad (4.2.6) to an accuracy of 0,01 g and record the mass (in1).
5.5.12 Place the receiver pad on its support (4.2.4).
5.5.13 Start the discharge of test liquid (4.2.7).
5.5.14 Wait for 5 s after the discharge is completed.
5.5.15 Weigh the standard receiver pad with the collected run-off liquid and record the mass (in2) to an accuracy of 0,01 g.
5.5.16 Waitfor4 mm to have elapsed between step 5.5.13 and step 5.5.17.
5.5.17 Remove the nonwoven test piece and place it on a fresh absorbent medium already prepared.
5.5.18 Remove the wet standard absorbent medium.
5.5.19 Make sure the run-off table is completely dry before each test.