Polyester conveyor belts are mainly composed of polyester canvas (skeleton material), rubber cover (contact layer), adhesive layer (connecting material) and optional special functional layers (e.g. flame retardant, high-temperature resistant coating). The following is a detailed analysis of each part of the material and its function:
1. Polyester canvas (skeleton material)
Material: Polyester canvas is the core skeleton of a polyester conveyor belt, typically woven from polyester fibers (polyester).
Function:
Provides strength: Polyester fiber has the characteristics of high strength and low elongation, allowing the conveyor belt to withstand large tensile and impact forces, suitable for medium to long distances and high load material transportation.
Maintaining Dimensional Stability: The low shrinkage nature of polyester canvas ensures that the conveyor belt is dimensionally stable during use, reducing operational issues caused by elongation or shrinkage.
Enhanced wear resistance: The wear resistance of polyester fiber makes the belt less prone to wear and tear during long-term operation, extending its service life.
2. Rubber cover layer (contact layer)
Material: Rubber overlays are typically made from natural rubber, synthetic rubber, or their blends, and may be supplemented with additives such as wear resistant agents and anti-aging agents.
Function:
Protective Belt Core: The rubber overlay protects the polyester canvas from direct material impact, abrasion, and chemical corrosion, extending the life of the belt.
Provides friction: The friction between the rubber overlay and the material and transmission equipment ensures the effective conveying of materials and the stable operation of the conveyor belt.
Adapt to different working conditions: By adjusting the formula and hardness of rubber, it can meet the needs of wear resistance, heat resistance, and cold resistance under different working conditions.
3. Adhesive layer (connecting material)
Material: The adhesive layer is typically made of a special adhesive or rubber paste that is used to securely bond the polyester canvas to the rubber overlay.
Function:
Ensure interlayer bonding: The adhesive layer ensures the interlayer bonding between the polyester canvas and the rubber cover, preventing delamination or peeling during use.
Improved Overall Performance: Good adhesive properties contribute to the overall strength and stability of the conveyor belt, ensuring its reliable operation under various operating conditions.
4. Other optional materials (special functional layers)
Material: Depending on specific needs, polyester conveyor belts may also contain other special functional layers, such as flame retardant layers, high-temperature resistant layers, anti-static layers, etc. These functional layers are often made from special rubber formulations or additives.
Function:
Meet specific needs: Special functional layers can meet the needs of specific working conditions, such as flame retardant, high temperature resistance, anti-static, etc., improving the safety and applicability of conveyor belts.
Expand the range of applications: By adding special functional layers, polyester conveyor belts can be applied to more fields and working conditions, such as special material handling in chemical, electric power, metallurgical and other industries.
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