KAPA graph Black Premium Polyurethane Foam Board (5mm)

The High Performance Presentation Standard for Solvent-Resistant Modelling, Graphic Mounting, and Intricate Displays

KAPA graph is a premium, high performance, matt laminated foam board engineered specifically for the graphic arts and professional modelling sectors. Proudly manufactured in Germany, it features a unique polyurethane (PUR) rigid foam core wrapped in high quality, pH neutral black cellulose liners, offering a level of technical sophistication far exceeding standard polystyrene boards. This highly popular material is exceptionally favoured for architectural and scale modelling because the core reliably resists crumbling when cut and withstands solvent based paints and glues, providing a robust, premium backdrop for creative design execution.

Why Professionals Choose KAPA graph

• Solvent Resistance: Unlike common polystyrene alternatives, the unique polyurethane core is completely resistant to solvent based adhesives, spray mounts, and paints, allowing artists to apply diverse finishes without risking structural melting.
• Precision Crumble-Free Edges: The high density PUR core allows for extreme cutting precision with virtually zero crumbling, making it the premier choice for complex structural model components and detailed topographical work.
• Velvety Archival Surface: Features high quality, unvarnished, deep black cellulose liners that are completely acid free and pH neutral. This non reflective face ensures that mounted photos or presentation drawings will not degrade or discolour over time.

Essential Tools for KAPA graph Modelling

Having the correct tools ensures crisp, clean edges and prevents the board from crushing or tearing during fabrication.

• Cutting Blade: An exceptionally sharp craft knife or scalpel is crucial for a smooth glide through the dense core.
• Straight Edge: Always use a heavy duty metal ruler to guide your lines and ensure perfectly straight cuts.
• Adhesives: Fully compatible with fast setting PVA, thick universal adhesives, or specialised foam safe glues like UHU Por and Zap PT25 Zap-O CA. Because the polyurethane core holds up well against solvents, standard cyanoacrylate (super glue) can also be used for rapid, high strength structural joints.

Step-by-Step Model Making Process

1. Preparation and Planning: Draw your blueprints or floor plans accurately to scale. Measure twice and trace your structural lines directly onto the velvet matt paper surface of the KAPA graph sheet using a soft lead pencil.
2. Precision Cutting: Place your sheet firmly onto a self healing cutting mat. To ensure perfectly clean, vertical edges, use your metal ruler as a guide and make a few light, successive passes with your sharp blade rather than forcing a deep cut in one go.
3. Assembling the Elements: Apply a thin, even layer of your chosen glue along the mating edges of your cut boards. Secure the pieces together and hold them briefly until they form a stable, durable bond.
4. Detailing and Finishing: The premium matt surface serves as an excellent base for painting, staining, or applying textured overlays. For curved features or arches, you can gently score just the outer paper layer and carefully form the inner foam to create clean, smooth bends and custom 3D shapes.

Technical Expert Notes

• Core Aesthetic: Due to specialised production processes, the inner core of KAPA graph is an even, very dark grey rather than a pitch black. Standard black foamboard remains available if a completely black core is necessary for your design, though it will lack the PUR core's superior flat architecture and crumble free cutting properties.
• Longevity Assurance: The clean, pH neutral composition of the protective outer layers ensures that the board will never react with or chemically damage the materials mounted upon it.

Technical Specifications

• Thickness: 5.0mm
• Sheet Core: Dark grey PUR (Polyurethane) rigid foam (Solvent resistant)
• Liners: Matt, black coloured cellulose board (Acid free and pH neutral)
• Dimensions: 700 x 1000mm
• Origin: Manufactured in Germany

Applications

• Architectural Model Making: Perfect for intricate structural building, non reflective massing layouts, precise site plan bases, and complex topographical studies.
• Graphic Design and Presentation: An industry favourite for floating or mounting high end design renders, architectural portfolios, and museum quality gallery photography.
• Film and TV Production: The deep, light absorbing matt black finish makes it highly effective for light control, studio masking, and constructing durable, lightweight set details that require secure adhesive bonding.

Choosing Between KAPA Line and KAPA Graph

When selecting between KAPA line and KAPA graph for model making, the core difference comes down to aesthetics and surface finish. Both share the same solvent resistant polyurethane foam core, which cuts cleanly without crumbling. Your choice depends on whether your project requires an economical structural all rounder or a premium presentation finish.