2013年7月19日星期五

Fourth, the natural characteristics of leather and artificial leather


Natural leather Features
The characteristics of natural leather is superior to other materials, is that it flexible, breathable, abrasion, folding, beautiful .... it is essential to help high-grade leather material. Its characteristics are:
1 natural leather parts of the strengths and weaknesses vary widely.
As part of the skin in animals of different functions, generation, development is different, made of leather fiber structure after its departments, different densities, tear out sheet strength are different. In particular, perception, hand extended, flex resistance and processing properties are different.
2 parts of the fiber (wire lines) structure has directionality.
Different parts of each leather, fiber to a different department.
When the leather is stretched effect, the different parts of the different elongation.
Some force different rates, the elongation is different, and the gap is very large.
3 having air permeability.
This feature allows the wearer's sweat, discharged to outside of shoes cavity, so that the wearer feel comfortable.
4 good heat and cold resistance.
5 abrasion resistance, stamping performance, and there is ease of processing performance.
6 soft leather, tough, and elastic and flex resistance. Adapted to the physiological needs.
7 beautiful, and has easy modification, modeling performance.
Artificial leather Features
Where the use of man-made, or excipients used to help feed leather-called artificial leather. According to its structure, can be divided into two kinds of synthetic leather and imitation leather.
Synthetic leather features:
1 good corrosion resistance, because the surface coating is made of plastic, so with mild acid exposure, less prone to chemical reactions. And has anti-moth properties.shoes manufacturer(2) anti-rustle performance, and rustling touch, can not penetrate the inner layer.
Therefore, surface contamination, use a wet dispatched marina, unchanged since its luster
3 smooth surface material uniformity, there is no natural leather deep surface disability defects. Bright and beautiful leather surface, the surface can be designed manually filled with color and pattern. Because of the substantially flat bottom, uniform material. So easy to mechanization, standardization, assembly technology.shoes factory4 poor ventilation, the fibrous structure of the substrate is enclosed by the plastic surface, so that, compared with natural leather, there is poor ventilation characteristics.
5 is not heat and cold, which is determined by the performance of the material.
Leather features:
Light body, thin soft, suitable for soft shoes. As strong as all finished leather, afraid to scratch, to help face many additional reinforcement structure, make up for its shortcomings. Poor leather breathable absorbent.women shoes manufacturer

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