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Different rubber conveyor belt materials require different cold-adhesive formulations.
Release time:
2020-07-08
Depending on the material of the conveyor belt, the materials used to repair the conveyor belt are... Cold-adhesive glue They also differ. For example, polyvinyl chloride/PVG conveyor belts commonly used in industry require specialized polyvinyl chloride/PVG cold-adhesive glue to meet the working strength requirements of the conveyor belt. In contrast, when performing cold bonding on other major types of rubber conveyor belts, it’s necessary to select an appropriate adhesive to achieve fast, efficient, and high-quality repairs.
Industrial rubber conveyor belts include fabric-cord belts and steel-cord belts, among others. They offer a wide range of tensile strengths—from low to high—and are suitable for many different environments. During operation, these belts experience significant tensile forces and undergo bending and directional changes as they pass over rollers. The abrasion caused by idlers and scrapers, impacts and vibrations from conveyed materials, as well as corrosion from water, oils, and acids or alkalis—all these factors can significantly affect the adhesion of the rubber glue and the overall performance of the conveyor belt. A good... Cold-adhesive glue It should be able to effectively address these issues.
In cold-adhesive repair of rubber conveyor belts, imported cold-vulcanizing adhesives are used. In addition to their strong adhesive strength, these bonding materials can undergo a vulcanization reaction and fuse into a single, cohesive unit, achieving bond strengths comparable to those obtained through hot vulcanization.
What kind of rubber conveyor belt is used? Cold-adhesive glue Cold-curing adhesive is suitable for bonding rubber, metal, leather, and fabrics. Its bonding strength exceeds the German DIN industrial standard and cures through a reaction with the bonded materials. In cold seamless bonding, the bonding strength is equivalent to that achieved by hot curing.
After the adhesive and curing agent are mixed according to the specified ratio, the curing speed is significantly accelerated. At room temperature, the activation time is 60 minutes, and the surface drying time is approximately 5 to 15 minutes. The adhesive exhibits high initial adhesion, and once adhered, its bonding strength is sufficiently robust. Therefore, when using cold curing... Cold-adhesive glue When bonding conveyor belts, there’s no need to apply prolonged pressure to the bonded area; in fact, under appropriate environmental conditions, repairs can be made and the belt can be put into use immediately.
A very important issue facing the repair section of the circular conveyor belt is whether it can adapt to bending as it passes over the rollers. The repaired surface of the conveyor belt not only has to withstand tensile forces but also endure significant tensile stresses when passing through the rollers. Typically, there’s an inlet at the roller location where materials create impacts and vibrations—challenges that even the most resilient adhesive struggles to handle.
Cold vulcanization Cold-adhesive glue It is a two-component rubber adhesive. The rubber layer cured from this adhesive exhibits excellent flexibility and elasticity. The peel strength of the rubber layer reaches 16 N/mm², the tensile strength at break is 20 MPa, and the elongation at break exceeds 200%. It demonstrates outstanding performance when used in rubber conveyor belts that have undergone bonding and repair.
Cold-curing cold-adhesive exhibits highly stable chemical properties, such as water resistance, oil resistance, resistance to acids and alkalis, and resistance to sunlight and atmospheric aging. In harsh service environments, it can maintain bonding strength for over four years.
Cold vulcanization Cold-adhesive glue It can not only be used to repair common damages to rubber conveyor belts but also to fabricate spliced belt joints. The joints produced can achieve 60-70% of the original belt’s strength, making them ideal for quick splicing operations that require urgent performance.
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