Application of core rubber and surface rubber in hot vulcanized joints
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Application of core rubber and surface rubber in hot vulcanized joints

Author: Site Editor     Publish Time: 2025-02-17      Origin: Site

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Conveyor belts are essential components in industries such as mining, manufacturing, and logistics. Over time, wear and tear can compromise their efficiency, necessitating repairs. One of the most effective repair techniques is hot vulcanization, which involves using Cover Rubber (Uncured) and Intermediate Rubber (Uncured). This article explores the advantages of these materials, their applications, and their impact on conveyor belt performance.


Understanding Hot Vulcanized Conveyor Belt Repairs

Understanding hot vulcanized belt splices is crucial for ensuring the longevity and reliability of conveyor belt systems. This splicing method utilizes heat and pressure to create a strong, seamless bond between two belt ends, resulting in a splice that is as strong as, or even stronger than, the belt itself. Unlike mechanical fasteners, which can introduce weaknesses and require frequent maintenance, hot vulcanization provides a smooth, continuous surface that minimizes wear and tear on both the belt and the conveyor system components.


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What is Cover Rubber (Uncured)?

Range of Application


Cover rubber (uncured) is a material specifically used for hot vulcanized splices, fabric and wire conveyor belting connections. Its main functions include:


Connecting conveyor belt surfaces to extend service life


Enhancing structural integrity after damage


Forming a seamless bond with existing belting materials


Key Features

  • High tensile strength, ensuring durability under heavy loads

  • Excellent tear and wear resistance

  • Can withstand repeated heating cycles

  • Special metal additives that enhance bonding effectiveness

  • Up to 100% repair efficiency, restoring conveyor belts to their original performance


Product Specifications

Product Name

Specification 

(T × W × L mm)

Packing
Unvulcanized Cover Repair Rubber HP-EP 3×500mm 10KG/roll
Unvulcanized Cover Repair Rubber HP-EP 4×500mm 10KG/roll
Unvulcanized Cover Repair Rubber HP-EP 5×500mm 10KG/roll


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What is Intermediate Rubber (Uncured)?

Scope of Application

Intermediate Rubber (Uncured) is used in hot-vulcanized joints and repairs for steel cord and fabric conveyor belts. Its unique properties make it ideal for high-temperature bonding applications.


Key Features

  • Superior high-temperature resistance

  • Effective bonding for different conveyor belt brands

  • Good fluidity for seamless integration

  • Shelf life of up to 24 months


Product Specifications

Product Name

Specificatio

 (T × W × L mm)

Packing
Unvulcanized Mat Repair Rubber 0.8×500mm 10KG/roll
Unvulcanized Mat Repair Rubber 1×500mm 10KG/roll
Unvulcanized Mat Repair Rubber 2×500mm 10KG/roll
Unvulcanized Mat Repair Rubber 3×500mm 10KG/roll
Hot Vulcanizing Agent HP-1000 1KG 10 barrels/box


Benefits of using uncured rubber for hot vulcanized belt joints

1. Enhanced Durability and Strength

Hot vulcanization with Cover Rubber (Uncured) and Intermediate Rubber (Uncured) ensures repairs are as strong as the original belt, maintaining operational efficiency.

2. Superior Wear and Tear Resistance

These materials are highly resistant to abrasions, making them ideal for industrial environments where conveyor belts experience constant stress.

3. High-Temperature Resistance

With an ability to withstand up to 180°C, Intermediate Rubber (Uncured) ensures durability in high-heat applications.

4. Compatibility with Various Conveyor Belt Brands

Both Cover Rubber (Uncured) and Intermediate Rubber (Uncured) work efficiently across different conveyor belt manufacturers, providing seamless integration.


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Comparative Analysis: Uncured Rubber vs. Conventional Repair Methods

Feature Uncured Rubber (Hot Vulcanization) Cold Vulcanization
Bond Strength 100% equivalent to original belt Weaker bond, prone to peeling
Durability Long-lasting, wear-resistant Shorter lifespan, less wear-resistant
High-Temperature Resistance Up to 180°C Limited temperature resistance
Compatibility Works with all belt brands May not bond with all belts


Conclusion

Utilizing Cover Rubber (Uncured) and Intermediate Rubber (Uncured) in hot vulcanized conveyor belt repairs significantly improves the strength, durability, and efficiency of conveyor systems. These materials ensure seamless bonding, high-temperature resistance, and superior wear protection, making them indispensable for industrial operations. Additionally, incorporating Pulley Lagging, such as Diamond Pulley Lagging (FRAS), Plain Pulley Lagging (FRAS), and Ceramic Slide Lagging (FRAS), further enhances conveyor belt performance and longevity. As industries seek cost-effective and reliable repair solutions, the importance of uncured rubber in hot vulcanization will continue to grow.


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