The conveyor belt generally consists of three parts: the skeleton material, the cover layer and the bonding layer material (hereinafter referred to as "covering layer" and the bonding layer collectively referred to as "covering layer"), and the bottoming material, wherein the skeleton material is the key to the conveyor belt and is the conveyor belt. The decisive factor of guiding, load capacity and elongation; therefore, the covering material is the guarantee for the normal operation of the conveyor belt, and has the functions of protecting the skeleton material, conveying the material, increasing the friction coefficient, absorbing the impact of the material, and resisting the wear, and the characteristics of the conveyor belt. For example, high temperature resistance, wear resistance, antistatic, etc. depend on the characteristics of the cover material; the role of the primer material is to have a good bond strength between the skeleton material and the cover layer.
ccording to the material of the cover layer, the conveyor belt can be generally divided into rubber conveyor belt and light conveyor belt. The former layer mainly adopts various natural or synthetic rubbers, while the latter uses various polymer materials, mainly including PVC and PE. , TPU, TPEE materials, etc.
In general, the application of rubber conveyor belts has not changed much in the past few decades. It is still dominated by traditional heavy industry and mining, and is developing in the direction of high temperature resistance, flame retardancy and high strength according to the special requirements of these industries; The application of light conveyor belts is increasing, from the initial light industry, electronic production lines to textile printing and dyeing, stone wood processing, food processing, etc., in addition to the traditional five industries of steel, coal, electricity, cement, ports, etc. The field is currently almost usable, and its performance and application areas are constantly evolving with the development of polymer materials technology. In the conveyor belt industry, light conveyor belts represent the development direction of lightweight, safe, environmentally friendly and energy-saving conveyor belts.
Globally, with the economic development, the overall market size of the conveyor belt industry has maintained steady growth.
Compared with traditional rubber conveyor belts, the new material lightweight conveyor belt has many advantages: first, it is safer and healthier. Compared with traditional conveyor belts, PU food grade conveyor belt products and PVC conveyor belts are widely used in food processing, agricultural production and other industries because they meet the strict standards of EU and FDA, while TPEE and PE conveyor belts meet combustion due to their surface materials. Non-toxic and harmless requirements are used as the main band in the tobacco industry; secondly, changing performance is relatively easy and can meet diverse performance needs. In addition to the good properties of the cover material itself, through physical and chemical modification, the new material light conveyor belt can be characterized by acid and alkali resistance, oil resistance and organic solvents, meeting the diversified needs of many industries; again, in performance In similar cases, the weight and thickness of the new material lightweight conveyor belt is much smaller than that of the rubber conveyor belt, and the flexibility is better. The required wheel diameter of the equipment is also much smaller, and thus more energy-saving.
Therefore, globally, with the international development and application of new green materials, and the increasing awareness of environmental protection and energy conservation, the conveyor belt industry will develop in the future in the direction of lightness, energy saving, safety and environmental protection. Lightweight conveyor belts In the conveyor belt industry, the proportion is gradually increasing. In more and more fields, it gradually replaces ordinary rubber conveyor belts, and the market demand is expanding.