ISO 105-C07:1999 pdf download – Textiles – Tests for colour fastness
1 Scope
This part of ISO 1 05 describes a method for determining the colour fastness to wet scrubbing of pigment dyed or pigment printed textiles of all kinds.
The test is not applicable to loose fibres.
2 Normative references
The following standards contains provisions which, through reference in this text, constitute provisions of this part of ISO 105. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this part of ISO 105 are encouraged to investigate the possibility of applying the most recent editions of the standards listed below. Members of IEC and ISO maintain registers of currently valid International
Standards.
ISO 1 05-A01 :1 994, Textiles — Tests for colour fastness — Part A01 : General principles of testing .
ISO 1 05-A02:1 993, Textiles — Tests for colour fastness — Part A02: Grey scale for assessing change in colour.
ISO 1 05-C01 :1 989, Textiles — Tests for colour fastness — Part C01 : Colour fastness to washing: Test 1 .
ISO 1 05-C06:1 994, Textiles — Tests for colour fastness — Part C06: Colour fastness to commercial and industrial laundering.
3 Principle
The test specimen is immersed in a soap solution or detergent solution, scrubbed for a specified time with a brush then rinsed and dried. The change in colour of the test specimen is assessed using the grey scale.
4 Apparatus and reagents
4.1 Testing device, consisting of a means of wet scrubbing, moving to and fro in a straight line along a 1 00 mm ± 1 0 mm track on the test specimen with a force of 9,0 N ± 0,2 N, with approximately one complete to and fro cycle per second. The base board of the device is large enough to clamp on a test specimen of not less than 80 mm 3 250 mm.
4.2 Brush, consisting of five rows with 1 3 tufts or 1 4 tufts per row each with 1 6 stiff polyamide bristles of 0,36 mm per tuft. The tufts are cut to a uniform length of 1 5 mm and the distance between tufts is 4 mm. The brush permits a width of scrubbing of 55 mm ± 2 mm. Other brushes similar to the brush described above may be used as long as there is agreement between interested parties and the particular brush used is reported.
New brushes shall be blunted before use by scrubbing the brush for at least 1 00 cycles using abrasive or cloth paper (see note 2). If necessary repeat until the brush surface is perfectly aligned with the abrasive or cloth paper on the base board. Depending on the brush used, a residue may be noticed on the abrasive paper.
5.1 If the textile to be tested is a fabric, prepare one specimen not less than 80 mm 3 250 mm, with the long direction parallel to the warp yarns (or the direction of manufacture). If multicoloured textiles are to be tested and all colours on the textile cannot be included in one specimen, prepare further test specimens and assess each colour separately.
5.2 If the textile to be tested is yarn or thread, knit it into fabric to provide a specimen at least 80 mm 3 250 mm. The knit construction should be agreed on between the interested parties. Alternatively, the yarn can be wound on a plastic plate. The construction chosen can influence test results.