Embossed synthetic leather and preparation method of embossed synthetic leather

Abstract

The invention relates to embossed synthetic leather and a preparation method of the embossed synthetic leather. The embossed synthetic leather comprises a base cloth layer; an aqueous PU (polyurethane) foaming layer is coated on the base cloth layer, and the aqueous PU foaming layer is directly embossed to form an embossed layer. The preparation method of the embossed synthetic leather comprises the steps of: preparing slurry, feeding the slurry into a foaming machine and determining size of a required foam hole by adjusting the ratio of the slurry and air inflow, then feeding base cloth into the foaming machine, finishing processing of bass by procedures such as warming, ironing, loading material, feeding into an oven and the like, finally directly embossing on the surface of the discharged synthetic leather out of the oven, enabling the synthetic leather to enter the oven again, and performing cold pressing on the synthetic leather and discharging the synthetic leather from the oven. The embossed synthetic leather manufactured according to the method disclosed by the invention is good in air permeability, good in withdrawing resistance without yellowing, good in resistance to ultraviolet light without aging and mildewing, high in hydrolysis resistance, hardy twisting resistance and abrasive resistance, simple and clear in manufacturing technology, and obvious in energy conservation and consumption reduction, and the fire resistance can be up to advanced international standards.

Description

technical field [0001] The invention relates to a synthetic leather and a manufacturing method thereof, in particular to an embossed synthetic leather and a manufacturing method thereof. Background technique [0002] At present, synthetic leather products have gradually become a popular trend in the future. Synthetic leather has been widely used in the production of luggage, clothing, footwear, car interiors and other products. In the manufacturing process of known artificial synthetic leather, no matter base material or the manufacture of face skin all used a large amount of solvents, and it can cause serious environmental pollution, contains dimethylformamide (being called for short DMF) as in the solvent used in wet synthetic leather, can Absorption through the skin or inhalation through the lungs can cause poisoning. It is a listed toxic chemical. According to regulations, the factory must be equipped with equipment for gas collection, water washing and waste gas treatme...

AI Technical Summary

Problems solved by technology

In the manufacturing process of known artificial synthetic leather, no matter base material or the manufacture of face skin all used a large amount of solvents, and it can cause serious environmental pollution, contains dimethylformamide (being called for short DMF) as in the solvent used in wet synthetic leather, can Absorption through the skin or inhalation through the lungs can cause poisoning. It is a listed toxic chemical. According to regulations, the factory must be equipped with equipment for gas collection, water washing and waste gas treatment. The factory and the government must also monitor and record the treatment process at any time. Therefore, the treatment of waste water and waste gas is time-consuming and laborious, and a little carelessness will cause serious pollution consequences

[0003] Another dry synthetic leather manufacturing process is the use of resin coating method, which uses methyl ethyl ketone (referred to as MEK) can cause acute toxic hepatitis in the human body, and xylene is highly flammable and can be easily burned by heat, sparks, etc. , the flame is ignited, it is easy to cause a fire, and it will pollute the air and water.