PVC Foam Core is produced using a combination of extrusion and controlled chemical foaming. During production, PVC resin is mixed with stabilizers, blowing agents, activators, and processing modifiers. As the compound is heated and extruded, the blowing agent decomposes to form gas, creating a uniform closed-cell structure within the material. The formulation and process conditions determine density, cell size, rigidity, and overall mechanical behavior.
There are two primary manufacturing methods: Free Foam and Celuka. Free Foam produces a foam board with a uniformly distributed cellular structure and consistent density across the sheet. It is lighter and generally offers better flexibility and impact absorption, making it suitable for applications where weight reduction is critical.
The Celuka process, in contrast, forms a solid, hardened outer skin as the material exits the die. This skin significantly enhances surface hardness, scratch resistance, and screw-holding strength while maintaining a foam interior. Celuka PVC is often used in applications requiring improved surface aesthetics, dimensional stability, or higher local load resistance.
Both types deliver the fundamental advantages of PVC Foam Core, but the choice depends on the engineering requirements—Free Foam for maximum lightness and versatility, and Celuka for structural surfacing and elevated mechanical performance.
These manufacturing differences allow PVC Foam Core to address a broad range of industries, from high-strength composite structures to decorative and functional architectural components.
