Water-based PU impregnation processing technology of automobile interior microfiber leather

Abstract

The invention discloses a water-based PU impregnation processing technology of automobile interior microfiber leather. The processing technology comprises the following steps of 1) placing a base cloth roll on an unwinding frame; 2) blending an aqueous PU emulsion, namely, mixing a polyurethane emulsion with a proper amount of water and uniformly stirring; 3) adding the stirred polyurethane emulsion into an impregnation tank through a feeding barrel, and heating to 50-80 DEG C; 4) enabling the base cloth to be soaked by the impregnation tank, and then to be pressed through a roller; and 5) enabling the base cloth to be dried by an oven, and finally enabling the base cloth to be rolled through a winding roller. The microfiber leather for the automobile interior prepared by the method is free of volatile toxic gas in the whole production process due to the use of the aqueous PU impregnation process, the production process is green and environment-friendly, and the microfiber leather canbe processed into automobile interior, and is free of organic solvent residues. The product prepared by the method is very wide in application field and quite huge in prospect in the context of increasing attention of people to the environment.

Description

technical field [0001] The invention belongs to the technical field of PU impregnation of microfiber leather, and in particular relates to a water-based PU impregnation process for automotive interior microfiber leather. Background technique [0002] With the improvement of people's living standards, people's pursuit of car consumption is getting higher and higher, especially the luxury grade of car interiors is an important evaluation standard for consumers when buying cars. Because of its beautiful appearance and comfortable body feel, microfiber leather is very close to natural leather, so in recent years, microfiber leather materials have developed rapidly in the field of automotive interiors. [0003] However, the microfiber synthetic leather currently on the market is basically impregnated with solvent-based PU resin. Because this process uses a large amount of volatile and toxic substances such as organic solvent DMF, it is very easy to cause poison to the operators d...

AI Technical Summary

Problems solved by technology

[0003] However, the microfiber synthetic leather currently on the market is basically impregnated with solvent-based PU resin. Because this process uses a large amount of volatile and toxic substances such as organic solvent DMF, it is very easy to cause poison to the operators during the production process, and the waste gas and wastewater The processing capacity is very large, even after the product is loaded, it is easy to cause poison to consumers due to residual organic solvents, and increase the chance of cancer and leukemia

[0004] Just being aware of the seriousness of this problem, in order to change this situation, it is urgent to research and develop an environmentally friendly water-based PU impregnation processing method to change the shortcomings of the existing production process and improve the quality of the product.

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