Leather product introduction:
Leather is an animal skin that has been denatured and decomposed by physical and chemical processing such as depilation and tanning. The leather is composed of natural protein fibers that are tightly woven in three dimensions. The surface has a special grain layer with natural grain and luster for comfortable hand.
In the process of human evolution, it has been found that some plant juices or mineral oils have a certain degree of enthalpy to the leather, and the raw material skin is soaked by the juice, which is more breathable and antiseptic. Thereby, the sheet material has physical properties such as softness, tear resistance, and tortuosity. The skin of this period really has the characteristics of leather products. And this juice is called a tincture.
The tanning industry developed into a stable tanning agent in the middle of the last century is roughly divided into the following three categories:
1. Vegetable tincture: mainly silicone rubber, used in industrial leather or bottom leather.
2. Mineral tincture: mainly composed of chromium salt and aluminum salt, used in various civilian leathers. Such as clothing.
3. Organic tanning agents: mainly formaldehyde, glutaraldehyde, etc., used in fur suede and all kinds of fine skin.
Leather cutting machine:
The characteristic of the leather hydraulic cutting machine is that when the punching head acts on the workpiece through the die, the pressure in the working cylinder does not reach the rated pressure, and the pressure will increase as the time of contact (cutting into the workpiece) increases. Until the electromagnetic reversing valve receives the signal, the reversing valve is reversed, and the punching head begins to reset; at this time, the pressure in the cylinder may not reach the set rated pressure value due to the time limit of the pressure oil entering the cylinder; That is to say, the system pressure has not reached the design value, and the die cutting has been completed.
Widely used in leather and shoes, handbags and bags, gloves and hats, crafts and silk flowers, embroidery, jigsaw and card making, plastic and packaging, printing and paper products, stationery, plastic chemicals, automotive and electronics, and other light Industry.
