| [Properties of "KURALON K-II" water
soluble type No. 2] |
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| 2 |
.Solubility of "Wool/K－Ⅱ"fabric |
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1)Solubility of woven fabric |
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Comparison of "KURALON K-II" with
conventional PVA fiber |
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2）Solubility of knitted fabric |
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Test method |
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Each specimen,
with a weight of 10g, is dried for 2 hours at 100 ℃ and its weight is
measured. (W1) |
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Distilled water,
as much as 30 times of "W1"is poured into the vessel and heated to
the temperature specified.A spcimen, folded four times, is put into the water
and stirred at 650 rpm.It is rinsed with water at 30-40 ℃ for several minutes
and dried for 2 hours at 105℃; the weight is then measured. (W2) |
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Residual PVA in
the specimen is removed completely by 100℃×30min.After washing, it is dried
for 2hours at 105℃. Its weight is measured. (W3) Solubility (%) is calculated by the
following equation: |
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Solubility(%)=(W1-W2)/(W1-W3)×100 |
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Dissolving
temperature can be changed depending upon the conditions. Please confirm with
each mill before commercial production.The following factors can impede
solubility: |
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1.
High density 2. Heavy weight 3 High twist 4. Less water 5. High alkali |
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6.
Insufficient stirring |
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