| [Properties of "KURALON K-II" water-soluble
type No. 1] |
Properties of staple fibers
| Type |
Nominal
dissolving
temp.
in water
(℃) |
Fineness
(dtex) |
Cut length
(mm) |
Tenacity
(cN/dtex) |
Elongation
(%) |
| WN2 |
20 |
1.7 |
38 |
6 |
20 |
| 2.2 |
51 |
7 |
22 |
| WN4 |
40 |
1.4 |
38 |
7 |
15 |
| 1.7 |
32,38 |
| 2.2 |
51,75B |
| WN6 |
60 |
1.7 |
51 |
6 |
16 |
| WN7 |
70 |
1.4 |
38 |
7 |
12 |
| 1.7 |
38 |
| 2.2 |
51,75B |
| WN8 |
80 |
1.7 |
38 |
8 |
11 |
| WQ9 |
95 |
1.7 |
38 |
9 |
11 |
*"B" means the variable cut.
Properties of spun yarns
| Type |
Nominal
dissolving
temp.
in water
(℃) |
Yarn
count
(E.c.c.) |
Tensile
strength
(cN) |
Elongation
(%) |
Twist
(turns/inch) |
| WN2 |
20 |
20/1 |
690 |
10 |
Z15 |
| 40/1 |
280 |
14 |
Z29 |
| WN4 |
40 |
30/1 |
530 |
9 |
Z17.5 |
| 50/1 |
320 |
11 |
Z25 |
| 80/1 |
180 |
9 |
S33 |
| WN7 |
70 |
80/1 |
185 |
8 |
Z33 |
Properties of nonwovens (Example)
| Type |
Nominal
dissolving
temp.
in water
(℃) |
Weight
(g/m2) |
Tensile
strength
(N/25mm) |
Breaking
length
(Nm/g) |
Tear
strength
(N) |
| WN2 |
20 |
35 |
24 |
27 |
10 |
WN2(50wt.%)
+
Rayon(50wt.%) |
- |
30 |
9 |
12 |
8 |
| WN4 |
40 |
35 |
23 |
26 |
11 |
| WN7 |
70 |
35 |
36 |
41 |
8 |
 |
Nominal dissolving temperature in water:
The temperature at which the specimen completely
dissolves in water under the following conditions:
The specimen, with a weight of 10g, is put
into a 500cc vessel. The distilled water
is as much as 30 times the specimen's weight.
The water is stirred slightly, and the specimen
is observed to have dissolved completely
after several minutes.
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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:
1. High density 2. Heavy weight 3. High twist
4. Less water 5. High alkali
6. Insufficient stirring
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