Polyvinyl Chloride Foam

This comprehensive guide defines PVC foam as a high-performance, rigid structural core material essential for modern composite engineering. Unlike flexible plastics, cross-linked PVC foam core offers an exceptional strength-to-weight ratio, superior water resistance via its closed-cell microstructure, and excellent chemical stability. The article details the technical differences between structural and soft PVC, analyzes key performance metrics, and explores critical applications across the marine, wind energy, and automotive sectors, illustrating why it is the preferred choice for lightweight, load-bearing structures.

PVC foam core is a rigid, closed-cell structural foam made from polyvinyl chloride (PVC) and used as the lightweight core in composite sandwich panels. Thanks to its high closed-cell content, low resin uptake, and excellent strength-to-weight ratio, it’s a go-to core for marine, wind energy, automotive/RV, aviation/UAV, refrigerated transport, and sports equipment. UNION COMPOSITES manufactures DNV-certified StruCell® rigid PVC foam cores in densities from 45–250 kg/m³, with tight thickness tolerances (±0.2 mm), low water absorption (<1.5%), and CNC-ready surfaces engineered to save weight and cost in production.

Confused between standard PVC foam board and structural PVC foam core? This definitive guide clarifies the critical difference between low-cost, calcium carbonate-filled boards and high-performance, cross-linked structural PVC foam cores. Learn the critical differences in composition, properties, machining, and applications to choose the right material for marine, automotive, industrial projects, and composite applications.

UNION COMPOSITES' DNV GL-certified StruCell® structural PVC foam provides superior buoyancy solutions for demanding marine applications like ROVs, AUVs, and offshore platforms. This closed-cell (>95%) rigid PVC foam offers exceptional strength-to-weight ratios (45-250kg/m³ densities) with 6.2MPa compressive strength for deep-sea pressure resistance. CNC-machinable for custom geometries, it features <1.5% water absorption, corrosion resistance, and thermal stability (-50°C to +80°C). Ideal for submersible housings, ship hulls, and buoyancy modules, our marine-grade PVC foam outperforms traditional materials with optimized weight reduction and long-term durability in harsh saltwater environments.

UNION's rigid structural PVC foam boards revolutionize campervan and motorhome construction, offering superior performance versus traditional plywood and aluminum honeycomb. As a DNV GL-certified core material, our closed-cell PVC foam provides 50% weight reduction, 100% waterproof protection, and CNC-ready machinability for precision RV interiors. Ideal for walls, ceilings, flooring, and cabinetry, these marine-grade panels deliver unmatched thermal insulation (0.035–0.055 W/m·K), UV resistance, and fire-retardant properties (UL94 V-0). Trusted by Australian RV builders for extreme climate durability. Request free samples for your conversion project.

UNION COMPOSITES' V-Groove Scrim Board PVC rigid foam revolutionizes catamaran tunnel design with its patented wave-damping structure. This marine-grade rigid foam features precision-cut V-grooves and fiberglass scrim reinforcement, reducing hull drag by up to 15% while maintaining DNV GL-certified buoyancy stability. Engineered for high-speed catamarans, the closed-cell PVC core (60-130kg/m³ densities) combines <1.5% water absorption with exceptional compression resistance (up to 3.0MPa). Ideal for tunnel reinforcement and hydrodynamic optimization, our CNC-machined panels are trusted by naval architects for competitive sailing vessels and passenger ferries. Request technical datasheets for your catamaran project.

PVC foam (polyvinyl chloride foam) is a lightweight, closed-cell structural material revolutionizing marine, aerospace, and transportation industries. UNION COMPOSITES' DNV GL-certified PVC rigid foam boards offer exceptional strength-to-weight ratios (45-250kg/m³ densities) with <1.5% water absorption and 6.2MPa compressive strength. Ideal for wind turbine blades, boat hulls, and vehicle panels, this versatile material provides superior thermal insulation (0.035–0.055 W/m·K), UV resistance, and CNC machinability. Compared to traditional materials like plywood or aluminum honeycomb, PVC foam delivers 30% weight reduction with enhanced durability. Discover why engineers worldwide choose PVC foam for high-performance composite applications – request free samples today.