[Products of "KURALON K-II" water soluble type]
Staple fibers
Properties of staple fibers
Type Nominal
dissolving
temp.
in water
(Ž)
Fineness
(dtex)
Cut length (mm) Tenacity
(cN/dtex)
Elongation
(%)
WN2 20 1.7 38 5 20
2.2 51
WN4 40 1.2 38 7 15
1.7 38
2.2 38,51,75B
WN5 50 1.7 32¤38 7 15
2.2 32,38,51,75B,85B
WN7 70 1.7 38 7 12
2.2 51
WN8 80 1.4 32,38 8 11
1.7 32,38
2.2 51,85B
2.2 75B 7 15
WQ9 95 1.7 38 9 10
2.2 51,75B
*"B" means the variable cut.

Spun yarns
Properties of spun yarns
Type Nominal
dissolving
temp.
in water
(Ž)
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
WN8 80 30/1 670 9 Z17.5
50/1 290 8 Z25
80/1 190 8 Z33AS33

Nonwovens
Properties of nonwovens (Example)
Type Nominal
dissolving
temp.
in water
(Ž)
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
WN‚S 40 35 23 26 11
WN7 70 35 36 41 8
WN‚W 80 30 21 28 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.
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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