What modification is necessary when handrails cannot form a continuous loop?

In situations where handrails cannot form a continuous loop, they must be vulcanized to ensure their integrity and functionality. Vulcanization is a chemical process that involves heating rubber or other materials with sulfur to strengthen and stabilize them. This modification is critical because it enhances the durability and flexibility of the handrails, allowing them to maintain their shape and performance even when they are not continuous. Ensuring that handrails are properly treated through vulcanization minimizes the risk of wear and improves safety by providing a reliable grip for users.

Other modifications, like painting, reinforcing, or welding, do not address the specific structural and material properties that vulcanization provides for handrails that need to be disconnected yet still functional. These alternatives may not ensure the necessary strength and reliability required for handrails, especially in a moving escalator environment.