Method for making mercerized leather by dyeing at one time
A mercerizing and leather technology, applied in dyeing, leather dipping, leather drying, etc., can solve the problems of low color fastness to washing and easy fading, achieve better hand feeling, enhance color fastness, and ensure hand feel Effect
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Embodiment 1
[0048] The method for making mercerized leather by dyeing at one time includes water field treatment and dry field treatment. The water field treatment includes the following steps: sequentially rewetting wet blue leather with delicate skin body→retanning→alkali extraction→neutralization→pre-addition Grease→dyeing→main fatliquoring→fixing to obtain water field leather; the dry field treatment includes the following steps: drying the obtained water field leather in turn→skinning→one drumming→one spraying drying→second falling Drum→Second spraying and drying→Three times of falling the drum to obtain the high-mercerized leather material; details are as follows:
[0049] Water treatment:
[0050] Rewetting: take the delicate wet blue hide, weigh it, place it in a drum, and add 150% water (at a temperature of 50°C) and 0.4% degreasing agent in sequence according to the mass percentage of the wet blue hide Add OC, 0.7% anti-spot agent TJ-A9811, 0.5% rehumidifier W into the drum, ru...
Embodiment 2
[0063] The method for making mercerized leather by dyeing at one time includes water field treatment and dry field treatment. The water field treatment includes the following steps: sequentially rewetting wet blue leather with delicate skin body→retanning→alkali extraction→neutralization→pre-addition Grease→dyeing→main fatliquoring→fixing to obtain water field leather; the dry field treatment includes the following steps: drying the obtained water field leather in turn→skinning→one drumming→one spraying drying→second falling Drum→Second spraying and drying→Three times of falling the drum to obtain the high-mercerized leather material; details are as follows:
[0064] Water treatment:
[0065] Rewetting: take the delicate wet blue hide, weigh it, place it in a drum, and add 100% water (at a temperature of 45°C) and 0.35% degreaser in sequence according to the mass percentage of the wet blue hide Add OC, 0.6% anti-spot agent TJ-A9811, 0.4% rehumidifier W into the drum, run for ...
Embodiment 3
[0078] The method for making mercerized leather by dyeing at one time includes water field treatment and dry field treatment. The water field treatment includes the following steps: sequentially rewetting wet blue leather with delicate skin body→retanning→alkali extraction→neutralization→pre-addition Grease→dyeing→main fatliquoring→fixing to obtain water field leather; the dry field treatment includes the following steps: drying the obtained water field leather in turn→skinning→one drumming→one spraying drying→second falling Drum→Second spraying and drying→Three times of falling the drum to obtain the high-mercerized leather material; details are as follows:
[0079] Water treatment:
[0080] Rewetting: take the delicate wet blue hide, weigh it, put it in the drum, and add 200% water (temperature is 45-55°C), 0.35%- Add 0.45% degreasing agent OC, 0.8% anti-spot agent TJ-A9811, 0.6% rehumidifying agent W into the drum, run for 65 minutes, then add 1.1% softening enzyme CL, run...
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