Views: 0 Author: Site Editor Publish Time: 2025-06-18 Origin: Site
PVC foaming technologyinvolves creating a cellular structure within polyvinyl chloride (PVC) material, resulting in a lightweight, foamed product with enhanced properties like insulation and reduced weight. This is achieved by introducing a blowing agent into the PVC during processing, which expands and creates gas-filled cells within the material. Several methods exist for PVC foaming, including extrusion (free foam and Celuka) and molding processes.
Free Foam: The foam expands freely after exiting the die.
Celuka: A mandrel inside the die creates a hollow section, promoting inward foaming and a skin formation.
Extrusion: PVC melt, mixed with blowing agents, is forced through a die to create a profile, which expands as it cools.
Molding: PVC resin and other additives are mixed, heated, and then expanded in a mold to create a desired shape.
Reduced Weight: Foaming reduces the density of the material, making it lighter.
Improved Insulation: The cellular structure provides better thermal and acoustic insulation.
Cost-Effectiveness: Foaming can lower production costs by reducing material usage and enabling efficient manufacturing.
Enhanced Properties: PVC foam exhibits good strength, chemical resistance, and fire resistance.
