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Color fastness to hot pressing

This test method is intended for determining the resistance of the color of textiles of all kinds and in all forms to color change, and color transfer when subjected to hot pressing. Tests are given for hot pressing when the fabric is dry, damp and wet. heating device, providing even heat transfer to the specimen from the top by close contact at a controlled temperature (generally 110oC, 150OC and 200oC) and giving a pressure on the specimen of 40±10g/cm3
(a) Dry pressing: Place dry specimen on top of the cotton cloth covering the wool flannel pad.
(b) Damp pressingL Place dry specimen on top of the cotton clothcovering the wool flannel pad. Place the wet undyed cotton cloth on top of the dry specimen.
(c) Wet pressingL Place the wet specimen on top of the dry cotton cloth covering the wool flannel pad and place the wet, undyed cloth on the specimen.

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