Preparation process of deep-level flame-retardant leather for high-speed trains and airplanes
A high-speed train and preparation technology, applied in leather degreasing, leather impregnation, leather surface treatment, etc., can solve problems such as poor softness and flammability of leather, and achieve solutions to poor softness, low cost, and high flame retardancy performance effect
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Embodiment 1
[0021] The invention discloses a preparation process of deep flame-retardant leather for high-speed trains and airplanes. The wet-blue leather is used as a raw material, and after pickling, retanning, softening, filling, fatliquoring and flame-retardant, the deep flame-retardant leather is finally prepared.
[0022] The pickling is to place the wet blue hides in the drum, add distilled water of 1 times the weight of the wet blue hides and cook for 5 minutes, then naturally cool down to 50°C, add an acidulant, adjust the pH value to 3.5, rotate for 100 minutes, and then Drain the water, then re-add distilled water twice the weight of the wet blue hide, rotate at a constant temperature of 40°C for 20 minutes, and empty the water to obtain the acidified wet blue hide.
[0023] The retanning is to place the acidified wet blue in a drum, add 2 times the water of the wet blue weight, then add 4% retanning agent and 2% degreasing agent of the wet blue weight, and then Raise the tempe...
Embodiment 2
[0035] The invention discloses a preparation process of deep flame-retardant leather for high-speed trains and airplanes. The wet-blue leather is used as a raw material, and after pickling, retanning, softening, filling, fatliquoring and flame-retardant, the deep flame-retardant leather is finally prepared.
[0036] The pickling is to place the wet blue hides in a drum, add distilled water of 1 times the weight of the wet blue hides and boil for 5 minutes, then naturally cool down to 60°C, add an acidulant, adjust the pH value to 3.7, rotate for 120 minutes, and then Drain the water, then re-add distilled water twice the weight of the wet blue hide, rotate at a constant temperature of 40°C for 20 minutes, and empty the water to obtain the acidified wet blue hide.
[0037] The retanning is to place the acidified wet blue in a drum, add 2 times the water of the wet blue weight, then add 4% retanning agent and 2% degreasing agent of the wet blue weight, and then Heat up and stir ...
Embodiment 3
[0049] The invention discloses a preparation process of deep flame-retardant leather for high-speed trains and airplanes. The wet-blue leather is used as a raw material, and after pickling, retanning, softening, filling, fatliquoring and flame-retardant, the deep flame-retardant leather is finally prepared.
[0050]The pickling is to place the wet blue hides in the drum, add distilled water of 1 times the weight of the wet blue hides and boil for 5 minutes, then naturally cool down to 55°C, add an acidulant, adjust the pH value to 3.6, rotate for 110 minutes, and then Drain the water, then re-add distilled water twice the weight of the wet blue hide, rotate at a constant temperature of 40°C for 20 minutes, and empty the water to obtain the acidified wet blue hide.
[0051] The retanning is to place the acidified wet blue in a drum, add 2 times the water of the wet blue weight, then add 4% retanning agent and 2% degreasing agent of the wet blue weight, and then Raise the temper...
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