Dry method production line of water-based ecological synthetic leather

Abstract

The invention provides a dry method production line of water-based ecological synthetic leather, which comprises a driver, a coating table and an oven, wherein the driver is used for conveying release paper or base clothes; the coating table is used for sizing on the release paper or the base clothes for one time or many times to form a single-layer or multi-layer water-based resin coating; the oven is used for drying the single-layer or multi-layer water-based resin coating; and medium wave infrared drying equipment is arranged in the oven. The production line of the invention has the advantages of safety, energy saving and high production efficiency, has double functions of production lines of the traditional dry method and the traditional wet method for producing leather, realizes the complete environment protection of the synthetic leather industry, and enables the quality of the processed water-based ecological synthetic leather to be more excellent.

Description

technical field [0001] The invention relates to the technical field of synthetic leather production equipment. Specifically, the invention relates to a dry production line for water-based ecological synthetic leather. Background technique [0002] At present, the synthetic leather produced by the traditional tanning production line in the market mainly includes ① oily PU surface layer + PVC foam layer + oily PU glue + base fabric; ② oily PU surface layer + oily PU middle layer + oily PU glue + base fabric; ③ Oily PU surface layer + oily PU glue + oily "Bass" and other 3 types. Oily PU resin contains a large amount of chemical solvents such as dimethylformamide. PVC foam layer and oily "Bass" raw materials and production processes will cause pollution. The obtained leather products will cause harm to consumers due to free isocyanate. bodily harm. [0003] At present, there is a water-based polyurethane resin that can make water-based ecological synthetic leather on the mar...

AI Technical Summary

Problems solved by technology

The traditional tanning production line is heated and dried by hot air convection using water vapor or heat transfer oil as the drying medium. This drying method has low efficiency and high energy consumption, and it is difficult to meet the production requirements of water-based synthetic leather.

[0005] In addition, the traditional tanning production line adopts the hot air convection drying method. When drying, the surface of the coating will be heated to form a film first, and the moisture in the middle will break through the leather surface and volatilize during the further heating process, which will cause the formation of the film to change, and then The phenomenon of easy peeling and pinholes is very common, and some tanning release paper patterns cannot be processed at all

Images