Hot Splicing Materials FAQ
Conveyor Belt Hot Splicing – Definitive Guide
The conveyor belt joints can be divided into hot splicing and cold vulcanizing splicing. Cold vulcanizing splicing is fast and highly efficient, but it is only used for the emergency joint of a variety of conveyor belts.
What is Conveyor Belt Hot Splicing?
Conveyor belt hot splicing is a method of repair that uses heat, time, and pressure to re-splice a belt. Belt hot splicing allows the damaged belt to its former strength, offering reduced corrosion and increased life. The belt hot vulcanizing procedures offer added durability that other methods lack and extend the longevity of a belt.
As it creates the highest return to original belt strength, it is ideal for belt splicing, cuts or tears, holes, or breakdowns between steel cords and fabric. It can be executed in dusty environments and is suitable for all types of conveyor belts with varying widths and thicknesses.
As the conveyor belt starts to be used, it is necessary to bond two ends of the belt through a splicing operation initially. Meanwhile, if the belt is worn and broken during use, it needs to trim broken parts and produce new joints for conveyor belt splices. A conveyor belt hot splicing needs to be made several times during the entire user life, Conveyor belt hot splicing is the best operation for conveyor belt jointing.
Types Of Hot Splicing Material
There are two regular types of hot splicing materials for conveyor belt vulcanization, including Uncured Cover Rubber(Top Cover) and Uncured Intermediate Rubber(Tie Gum), they are used to join or repair fabric & steel cord belts by hot vulcanized belt splicing.
Uncured cover rubber is designed to bond to cured cover rubber in all standard grades of steel cord and fabric conveyor belts. It has high tensile strength and wear resistance. Uncured cover rubber is better to be used as a cover rubber replacement material for conveyor belt hot splicing. It can enhance the working life of steel cord belt splices, and improve wear resistance, corrosion resistance, and impact resistance of the steel cord belt.
Uncured Intermediate Rubber(Uncured Skim Rubber) is designed to be used as an inter-core cord rubber replacement material in steel cord belt hot splicing or a tie gum in fabric belt hot splicing. Beltcare Solution uncured skim rubber Steel Wire Pull Out Strength ≥5500N(test condition: SS wire diameter 5mm, Vulcanizing Temperature 145℃), and Elongation at break≥300%, We selected high-quality hot splicing materials to achieve the same performance of the joints as the original conveyor belt.
Conveyor Belt Hot Splicing Application
In practical applications, the integrity of the splice is critical to minimizing the risk of downtime. the Uncured Cover rubber&Uncured Skim Rubber are unvulcanized raw rubber films.
They splice with two uncured rubbers completely after heating & pressuring by the vulcanizer, a strong belt splice relies on two important factors: the skill of the operator; and the quality of the belt hot splicing materials being used.
Beltcare Solution Uncured Cover Rubber& Skim rubber are designed for use in step hot splicing and finger splicing of conveyor belts, they are tried and tested successfully in many application fields
Conclusion
High-quality conveyor belt hot splicing materials have a long shelf life in common storage conditions, up to 24 months, they are suitable for long-distance transportation.
Beltcare Solution Uncured Cover Rubber Elongation at break≥500%, DIN abrasion loss≤140, Meanwhile, the Uncured Skim Rubber Elongation at break≥300%, Steel Wire Pull Out Strength≥5500N( under the test condition: SS wire diameter 5mm, Vulcanizing Temperature 145℃). More types of hot splicing materials such as belt noodle gum (filler rubber), and cushion gum are available for special demand.
Protective Film Color, Sizes, or per roll measurement can be customized.
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