Clear, colorless cast plexiglass, 5 mm thick - standard size 400x400mm

Transparent colourless cast plexiglas thickness 5 mm

UV resistant.

Technical Data Sheet: Cast PMMA Sheets (Plexiglass) – High Optical Quality

Cast PMMA (Polymethyl Methacrylate) is a rigid thermoplastic polymer produced by polymerization between two glass plates. This precision manufacturing process grants it superior mechanical properties and optical clarity compared to extruded PMMA.

Industrial Specifications and Advantages

• Exceptional Optical Purity: Light transmission exceeding 92%, surpassing mineral glass. Total absence of visual distortion, ideal for precision applications.

• UV and Weather Stability: Naturally resistant to ultraviolet rays. No yellowing or loss of mechanical properties during outdoor exposure.

• Precision Machining: High molecular weight structure allowing for perfect laser cutting (polished glossy edges), clean milling, and easy mechanical polishing.

• Chemical Resistance: Better tolerance to chemicals and solvents than polycarbonate, reducing the risk of environmental stress cracking.

Technical Applications

• Industry and Laboratories: Tank portholes, protective glazing for corrosive environments, medical devices.

• Architecture and Retail: High-definition illuminated signs, designer furniture, prestige partitions.

• Signage: Precision laser engraving and direct UV printing substrates.

Installation and Implementation Recommendations

Technical Note: Although more rigid than polycarbonate, cast PMMA is more sensitive to impacts. It requires sharpened metal drill bits with a specific clearance angle to prevent chipping.

Thermal Expansion: The expansion coefficient is approximately 7×10−5 mm/mm/°C (roughly $3.5\text{ mm/m}$ for a $\Delta T$ of $50$°C). Ensure sufficient rebate depth to avoid bowing of clamped sheets.