Cowhide-like microfiber synthetic leather and its manufacturing method

Abstract

The invention discloses cowhide-imitated microfibre synthetic leather and a manufacturing method thereof. The manufacturing method comprises the following steps: (1) pasting a low-density polyethylene film on one surface of a non-woven fabric A by hot pressing, thus obtaining a non-woven fabric B covered with the film at a single side; (2) impregnating the non-woven fabric B with wet-process polyurethane resin slurry, then solidifying and washing with water, thus obtaining composite base cloth C; (3) drawing out the composite base cloth C obtained in step (2) in a decrement way, and meanwhile removing the low-density polyethylene film to obtain base cloth D, and oiling to obtain the cowhide-imitated microfibre synthetic leather. While the strong genuine leather feeling of microfibre leather is ensured, a good slow-springback effect is also achieved, creases are fine and smooth, the density of a product has obvious gradient change, and the product has good air permeability, moisture penetrability and watertightness; the warp / weft elongation error of the product is less than or equal to 20 percent, the overall elasticity is little, the size stability is excellent, and fatigue deformation difficultly occurs; compared with existing genuine leather-imitated microfibre leather, the cost is lowered by 5 percent to 15 percent.

Description

technical field [0001] The invention relates to a cowhide-like superfiber synthetic leather and a manufacturing method thereof. Background technique [0002] In the international market, the microfiber base fabrics purchased by Alcantara from Japan's Toray and Italy's Alcantara are non-crease microfiber base fabrics produced by the technology of warp-knitted interlayer fabric composited with microfiber non-woven fabrics. The warp and weft elongation difference of the microfiber leather is reduced, and the warp and weft elongation difference is about 10% to 30%, which improves the dimensional stability of the product. The advantage of this technology is that the product has good dimensional stability and fine creases. Its disadvantages are that the non-woven fabric technology is complex, prone to wrinkles, narrow process looseness, strong cloth feeling, high cost, and its price is higher than that of domestic products. 200% to 300%. These products have been used in Mercedes...

AI Technical Summary

Problems solved by technology

In addition, the warp and weft knitted fabric is introduced into the non-woven fabric, which reduces the density of the finished product and reduces the sensuality

[0003] In the domestic microfiber leather market, the technology of high resilience and high shrinkage is basically used to produce this kind of base fabric. Its advantages are low cost, large process looseness, and strong finished product. The disadvantage is the weft fracture elongation. It is 50% to 100% higher than the radial direction, with fast elastic speed and strong glue feeling. The crease is worse than the technology using warp-knitted interlayer fabric composite microfiber non-woven fabric, and it is prone to fatigue when applied to shoe materials and bags. out of shape

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