Technical Information.htm

Technical Information

Physical property
Stability in Chemical Resistance
Dying and Heat Setting Characteristics

Heat Resistance
PH value tolerance
Solvent Resistance
Chlorine Resistance

Physical property

Denier	Tenacity	Elongation	300% stress
20D	1.6g/D ↑	450% ↑	6~7 g
30D	1.6g/D ↑	500% ↑	7~9 g
40D	1.2g/D ↑	500% ↑	12~14 g
70D	1.0g/D ↑	600% ↑	12~14 g

Denier	Recovery	Shrinkage in Boiling Water	OPU
20D	≧95%	≦12%	5~7%
30D	≧95%	≦12%	5~7%
40D	≧95%	≦11%	5~7%
70D	≧95%	≦10%	5~7%

Stability in Chemical Resistance

No.	Chemical	Test Condition	Tenacity	Elongation	Appearance
1	Caustic Soda NaOH	PH=121%50℃*24HR	○	○	○
2	Sodium Carbonate Na₂CO₃	PH=1090℃1HR	○	○	○
3	Acetic Acid CH₃COOH	1%50℃24HR	○	○	○
4	Oxalic Acid HOOCCOOH	1%50℃1HR	○	○	○
5	Sulfurlic Acid H₂SO₄	PH=290℃1HR	○	○	○
6	Perchloroethylene CL₂C=CCL₂	100%50℃24HR	○	○	○
7	Hot Water H₂O	100℃*3HR	○	○	○
8	Hydrogen Peroxide H₂O₂	8%88℃1HR	○	○	○
9	Sodium Hypochlorite NaOCL	PH=3.50.08%85℃ 30min	↓ △	↓ △	Turns to lt. Yellow △
10	Sodium Thiosulfite Na₂S₂O₃	0.5%50℃24HR	○	○	○
11	Caustic Soda NaOH	15%110℃30min.	↓ △	↓ △	○

Dying and Heat Setting Characteristics

Heat Resistance

　

Sheiflex spandex with stands 130℃*60 minutes high-temperature dyeing treatment.

　

Textile consisting of Sheiflex are recommended not to heat set over 190℃*120secs in principle.

PH value tolerance

　

PH value lower than 13 yet higher than 4 is recommended when processing textiles with Sheiflex content.

Back to top
Solvent Resistance

　

Benzol and phenol types of solvents will dissolve Sheiflex spandex yarns in dying and heat setting process, so please do not use these types of solvents.

Chlorine Resistance

Bleaching chemicals with Chlorine are not recommended. In case they must be utilized, such bleaching chemicals should be diluted with water before added to the grey fabrics or into the apparels containing spandex.

Send mail info@sheiflex.com.tw with questions or comments about this web site
Copyright 2000 Shei Heng Hsin Sheiflex Ind. Co., Ltd
Last modified : 2004-9-1