Waterborne polyurethane resin for leather finishing
The purpose of leather finishing is to improve the appearance of the tanned leather, in order to cover and correct the defects and defects caused by the original or previous processing, and finally give the leather good performance and appearance according to the needs of customers and the market.
Common finishing processes for leather include filling, bottom finishing, middle finishing and top finishing. Based on the finishing requirements of each coating, COPon Design has developed a range of waterborne polyurethane resins suitable for leather finishing, so that leather coating manufacturers can find environmentally friendly chemical raw materials to manufacture a diverse range of high-performance finishes. All leather finishing solutions comply with the Production Restricted Substances List (MRSL) requirements of the Zero Emission of Hazardous Chemicals Organization (ZDHC).
Bottom finish agent
The undercoat requires a strong covering ability, so that the surface of the blank leather is uniform, and as a bridge between the blank leather and the effect coating, it requires a strong adhesive force. Choosing the right polymer is particularly important.
It is suitable for preparing waterborne polyurethane resin as base coating agent
Intermediate finishing agent
The intermediate finish, which can be transparent or opaque, is the layer at the back of the finish that provides a certain hardness of the coating on which a number of physical and mechanical operations, including ironing and embossing, are performed to provide the appearance of the leather. The finish layer gradually increases in hardness from bottom to top.
It is suitable for preparing water-based polyurethane resin for intermediate coating agent
Top finish
The top coat of the leather will use a water-based polymer that is slightly harder than the front coat. According to the application direction of the leather, the top finish agent meets the physical and chemical resistance required by its field, giving the leather a better feel and beauty.
It is suitable for preparing waterborne polyurethane resin as top coating agent
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