AATCC Manual Crockmeter is used to determine colour fastness to wet and dry rubbing. Apart from textiles, also can be applicable for carpets, laminates, and printing inks, as well as the micro-scratch resistance of lacquers, coatings and painted surfaces. Provided with a steel specimen holder and 16mm diameter test finger.

This unit consists of control system and rubbing system. Fix sample on the base pasted with sandpaper via sample holder. Put the rubbing head covered with white cotton cloth onto the sample. After rubbing for several times, inspect the sample against grey scale so as to assess the staining degree of white cotton cloth, and make the judgment for stability of dyeing or surface coating of fabrics, provide the reference data for assessment and choices.

This apparatus apply to yarn, yarn-dyed, dyeing and printing products, such as textiles and toys at all or their internal fabric.

Standards

BS 1006 D02, ISO 105X12/D02, AATCC 8/165, JIS K6328, L0815, L1084, etc.

Sample Preparation

Dry staining test: Cotton cloth, samples or test area should be put into the condition for processing for 4 hours: Temperature of 21±1℃, relative humidity of 65±2% .

Wet staining test: White cotton cloth, sample or test area should be fully soaked in the distilled water, make it humidity reached 65±2%.

AATCC Rubbing Cloth

This is consumables should be purchased additionally.

Fabric to be Tested

The sample should be cut in the dimension of 50 mm x 150 mm to cover the metallic mounting plate. no damage and defect sample each six blocks, each direction with three pieces do dry staining test, three pieces do wet staining test.

If sample is yarn, should weave, or tightly wound in a proper shape, winding around should be according to the yarn length direction into 50 mmx150mm test area of sample.

The specimens for each must be such that one is assessed with the long direction parallel to the warp and other parallel to the weft. The wet test must be made with fresh dry samples and crocking cloths which have been wetted with water and squeezed to 100% take up (i.e. 10 grams of fabric is increased to 20 gm's of fabric plus water)

Sample and white cotton processing:

Dry staining test: put white cotton cloth, samples or test area in the atmospheric temperature is 21±1℃, relative humidity of 65±2% processing for 4 hours.

Wet staining test: place white cotton cloth, sample or test area completely soaked in the distilled water, then use laboratory wringer (available separately) or a similar method to squeeze the sample and white cotton cloth that placed in blotting paper, make it humidity reached 65±2%.

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