Shanghai Daxiang Chemical Industry Co., Ltd. - Stain-resistance test of spandex on dyeing polyester/spandex - IS Co., Ltd. Senshoku Keizai Shimbun textileinfo.com

Shanghai Daxiang Chemical Industry Co., Ltd.

Stain-resistance test of spandex on dyeing polyester/spandex

TEST CONDITIONS

Material:	a) Polyester / Spandex union cloth (80/20)
	b) 90% Polyester / 10% Spandex _ for Test E only.

Dyestuff:

Palanil Black (supplied by our customers)

7% (o.w.f.)

Stain resisting agent:	0) None
	1) Other company's product	5% (o.w.f.)
	2) Our conventional product	5% (o.w.f.)
	3) Unional EU	5% (o.w.f.)

Dyeing method:

TEST ITEMS

A) Water fastness	JIS L-0846
B) Washing fastness	JIS L-0844 (A-2)

C) Bleeding test by perchloroethylene

D) Color bleeding test (Daimaru department store method)

E) Staining on spandex

EXPLANATION ON TESTING METHOD
C) Bleeding test by perchloroethylene

Method:

A filter paper was placed on a plate and then a test specimen (6x3cm) was put on the filter paper. After that, one drop of perchloroethylene was dropped onto the test specimen. Another plate was placed on top of that and a 1kg weight was then loaded on to it and left for 4 hours at room temperature.

D) Color bleeding test (Daimaru department store method)

A 0.05% solution of nonionic detergent Nissan Nonion NS-208.5 (E0 8.5 mol) was prepared. The end of the test specimen was dipped into the solution to a depth of 5cm and left for 2 hours at room temperature. Then it was taken out and dried at room temperature.

RESULTS

	Water fastness		Washing fastness (A-2)
	Nylon	Cotton	Nylon	Cotton
0	Grade 2-3	Grade 4	Grade 1	Grade 4-5
1	Grade 3	Grade 5	Grade 3	Grade 5
2	Grade 3-4	Grade 4-5	Grade 2	Grade 4-5
3	Grade 4	Grade 5	Grade 3-4	Grade 5