Definition of heat shrinkable tube: A tubular intermediate product with a specified size is obtained by extrusion molding of polymer or polymer alloy, and the tubular product with a certain size obtained after irradiation crosslinking is heated and expanded, and then cooled and shaped into a heat shrinkable sleeve.
Principle: During production, heat the heat shrinkable tube to a high elastic state, apply a load to make it expand, and quickly cool it while maintaining the expansion, so that it enters a glassy state. This state is fixed. When in use, it will return to a high elastic state when heated, but it will retract when the load is gone.
The production process of Wolson heat shrinkable tube: mixing-extrusion-irradiation (crosslinking)-expansion-packaging.
Selection method: Ask the customer about the service environment (service temperature, articles to be protected, corrosive environment, voltage resistance and sealing) and the required shrinkage rate and size.