Polyboard | Pro Pp

Museums use Polyboard Pro PP for freestanding display panels because it is lightweight (easy to ship) and archival (acid-free, will not yellow photos over time).

| Property | Value (4mm sheet) | Test Method | | :--- | :--- | :--- | | Tensile Strength (MD) | 25 MPa | ASTM D638 | | Flexural Modulus | 1,200 MPa | ASTM D790 | | Impact Resistance (Izod) | No break (at 23°C) | ASTM D256 | | Thermal Expansion | 8.0 x 10⁻⁵ mm/mm/°C | ASTM D696 | | Service Temperature | -20°C to +80°C | Internal | | Water Absorption | <0.01% (24 hrs) | ASTM D570 | polyboard pro pp

Polyboard Pro PP is a twin-wall or solid extruded polypropylene (PP) sheet engineered for professional use. Unlike standard polypropylene, which can be flimsy, the "Pro" variant undergoes a specialized co-extrusion process. This process enhances its rigidity, UV stability, and impact resistance without adding significant weight. Museums use Polyboard Pro PP for freestanding display

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