How is Pu leather produced?


Natural leather is divided into thinner layers. In this way, every raw natural leather can be used to make some valuable PU leather.


Then mix the PU material. The exact ingredients in a mixture can vary widely depending on the end use of the material. Some may be denser, harder, firmer, softer or harder. Some of these mixtures are kept as trade secrets. Each factor affects the overall feel and performance of the final leather material.
Also, multiple colors can be mixed at this stage. Dye of almost any color can be mixed. At this point, other additives can be added. For example, this could be a UV flame retardant or flame retardant.


The undried PU compound was extruded onto the split leather. Extrusion can be done by gravity and pouring, or by mechanically pushing the material evenly over the separated skin base.
PU leather can be extruded to produce surface texture. This can be used to make it look like the natural grain of natural leather. It can also be used to emphasize a beautiful, visually appealing design.
While embossed natural leather is sometimes used to cover surface imperfections, embossed PU leather is purely for decorative purposes. Different textures can be preferred for the final product, depending on the type of commodity it will be used for. Since PU leather is primarily a synthetic material, it can easily showcase stylish and functional textures.


PU leather can be finished after stamping/embossing. This is usually done using synthetic surface protectants. It imparts radiance to the skin. Surface treatments can also provide a layer of protection for the underlying material. All in all, these finishes are a clear polymer that is waterproof and scratch/abrasion resistant. The finish may also contain fragrances, which help make the bonded leather smell more like natural leather.

How to Repair Scratches on PU Leather

Repairing scratches on PU leather pieces is often as simple as using a leather repair kit. Since PU has a plastic surface, the scratched material needs to be replaced.

Typically, leather repair tools will pour colored liquid into the cracks. It may need to be flattened, heat pressed, granulated and/or dried before the scratches are filled.

A tear in PU is harder to repair than a scratch. Since PU leather has a plastic surface, repairing tears may require a repair kit that includes padding. The void created by the tear needs to be filled.

Depending on the size of the tear, this can be done with a cloth, malleable glue, or the tinted liquid from the repair kit. Since the item may be placed or used and needs to be flexible, the material used as padding also needs to be flexible after drying.
Once the tear is filled, simply repair the remaining scratches visible above the tear. Pour the colored liquid you just poured into the crack. It may need to be flattened, heat pressed, granulated, and/or dried before the scratches are filled.


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