2
)
into a 500cc beaker.,
60%RH.
W2: Weight of testpiece after 1 hour
W3: Weight of testpiece after condensed water has been absorbed with filter paper
S: Beaker opening area (
)
|
|
|
|
| Toray Method | |
| Testing Procedure | |
| (1) | Take 3 sample testpieces from the fabric, each testpiece measuring 25cm by 25cm. Weigh each testpiece and note the weight (g). |
| (2) | Pour 500cc of hot water (402)
into a 500cc beaker. |
| (3) | lace each testpiece over a beaker, outer surface face-up and secure it using two rubber bands to prevent water vapor from escaping. |
| (4) | Place the beakers with the attached testpieces
in a temperature/humidity controlled chamber*1 maintained at 10,
60%RH. |
| (5) | Remove the beakers from the chamber after 1 hour and weigh each testpiece*2. |
| (6) | Use filter paper to absorb the condensed water and weigh the testpiece. |
| (7) | Calculate the levels of condensation and moisture absorption using these formulas: |
|
|
|
| where | |
| W1: Pre-test weight of testpiece (g) W2: Weight of testpiece after 1 hour W3: Weight of testpiece after condensed water has been absorbed with filter paper S: Beaker opening area ( )
|
|
| Notes | |
| *1 | Do not place more than five beakers in the chamber for each test in order to maintain correct testing conditions. |
| *2 | Carefully remove rubber bands from each beaker making sure that no condensed water drips from the testpiece and condensed water does not spill. |
|
|
|
|