Manufacturers of PVC foam products often face challenges with inconsistent density, surface roughness, and insufficient strength. The selection of foam regulators plays a crucial role in achieving the delicate balance between lightweight properties and structural integrity.

WSD-90, a high-performance acrylic polymer, has been developed specifically to address these production challenges. This advanced additive serves as more than just a processing aid—it functions as a core component that enables fine cellular structures and superior mechanical properties in finished products.

With optimized molecular weight distribution and high intrinsic viscosity (12-14), WSD-90 delivers three primary benefits while improving processing efficiency:

• Refined Cellular Structure: Stabilizes the decomposition process of foaming agents to ensure uniform, dense cell distribution, significantly reducing product density while maintaining excellent surface smoothness.
• Enhanced Melt Strength: Improves PVC melt elasticity and tensile strength, effectively addressing common extrusion issues like bubble collapse and shrinkage cavities.
• Superior Processing Performance: High purity and excellent flow characteristics reduce equipment load while improving production line stability and reducing scrap rates.

The versatility of WSD-90 makes it suitable for various PVC processing methods. Recommended dosage levels (per 100 parts PVC resin) include:

• PVC Foam Sheets: 8-12 parts for optimal hardness and surface finish in architectural applications
• PVC Pipes and Profiles: 6-8 parts to enhance melt strength and dimensional stability in complex cross-sections
• Foam Footwear and Lightweight Products: 1-3 parts to balance lightweight properties with elasticity and tactile comfort

Scientific adjustment of WSD-90 ratios enables manufacturers to optimize production costs while significantly improving end-product competitiveness in the PVC foam market.