Adsorptive environment-friendly type waterborne synthetic leather base and preparation method thereof
A synthetic leather bass, environmentally friendly technology, applied in the field of synthetic leather, to achieve the effects of low cost, good air permeability and fine texture
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[0041] Example 1
[0042] The formula of waterborne polyurethane coating is as follows:
[0043] Waterborne polyurethane emulsion
[0044] A production method of environmentally friendly waterborne polyurethane synthetic leather bass, the method includes the following steps:
[0045] 1) Before squeegee, the base cloth is soaked in bamboo vinegar liquid, the pH of the bamboo vinegar liquid is 3.5, so that the base cloth is soaked in the bamboo vinegar liquid, and then squeezed dry;
[0046] 2) The base fabric is scraped and coated with the above-mentioned water-based polyurethane coating, and the water-based polyurethane layer is solidified on the surface of the base fabric and squeezed out;
[0047] 3) After squeezing dry, enter the bamboo vinegar solution for foaming. The pH of the bamboo vinegar solution is 3.2 and the foaming time is 2 minutes to form a porous polyurethane coating. The coating amount of the water-based polyurethane layer is 40g / m 2 ;
[0048] 4) Wash with water aft...
Example Embodiment
[0094] Example 2
[0095] The formula of waterborne polyurethane coating is as follows:
[0096] Waterborne polyurethane emulsion
[0097] A production method of environmentally friendly waterborne polyurethane synthetic leather bass, the method includes the following steps:
[0098] 1) Before squeegee, the base cloth is soaked in bamboo vinegar liquid, the pH of the bamboo vinegar liquid is 3.5, so that the base cloth is soaked in the bamboo vinegar liquid, and then squeezed dry;
[0099] 2) The base fabric is scraped and coated with the above-mentioned water-based polyurethane coating, and the water-based polyurethane layer is solidified on the surface of the base fabric and squeezed out;
[0100] 3) After squeezing dry, enter the bamboo vinegar solution for foaming. The pH of the bamboo vinegar solution is 3.2 and the foaming time is 2 minutes to form a porous polyurethane coating. The coating amount of the water-based polyurethane layer is 40g / m 2 ;
[0101] 4) Wash with water aft...
Example Embodiment
[0111] Example 3
[0112] The formula of waterborne polyurethane coating is as follows:
[0113] Waterborne polyurethane emulsion
[0114] A production method of environmentally friendly waterborne polyurethane synthetic leather bass, the method includes the following steps:
[0115] 1) Before squeegee, the base cloth is soaked in bamboo vinegar liquid, the pH of the bamboo vinegar liquid is 3.5, so that the base cloth is soaked in the bamboo vinegar liquid, and then squeezed dry;
[0116] 2) The base fabric is scraped and coated with the above-mentioned water-based polyurethane coating, and the water-based polyurethane layer is solidified on the surface of the base fabric and squeezed out;
[0117] 3) After squeezing dry, enter the bamboo vinegar solution for foaming. The pH of the bamboo vinegar solution is 3.2 and the foaming time is 2 minutes to form a porous polyurethane coating. The coating amount of the water-based polyurethane layer is 40g / m 2 ;
[0118] 4) Wash with water aft...
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