Application of PC Solid Sheet in Advertising Light‑boxes

The panel materials for advertising light‑boxes are generally tempered glass or PC Solid Sheet. Nowadays, PC Solid Sheet is increasingly widely adopted thanks to its higher safety performance and easier on‑site construction compared with tempered glass.

PC Solid Sheet is manufactured by melting polycarbonate pellets and extruding them through precision molds. Common thickness ranges from 2 mm to 10 mm. Benefiting from the inherent properties of polycarbonate raw material, PC Solid Sheet delivers comprehensive advantages including flame retardancy, high light transmittance, outstanding impact resistance and low weight.

For bus‑stop advertising light‑box projects, PC Solid Sheet with thickness of 4‑5 mm is the preferred option. High‑quality virgin‑material transparent PC Solid Sheet with surface UV‑coating performs excellently in anti‑aging capacity, and can achieve an outdoor service life up to 15 years. It is critical to select PC Solid Sheet with physical surface UV‑coating and require suppliers to guarantee this coating process. Products only mixed with UV additives inside raw‑material pellets provide barely effective anti‑aging protection.

Compared with glass, PC Solid Sheet achieves nearly identical light transmittance. Its weight is only half of glass at the same thickness. It also features superior thermal‑insulation performance, with energy‑saving capacity 1.5‑1.7 times that of glass of equal thickness. Double‑sided UV‑coating prevents sheet yellowing under long‑term sunlight exposure and extends overall service life.

When compared with other daylighting panels, PC Solid Sheet has two prominent strengths: first, exceptional impact resistance and fracture resistance; second, flame‑retardant property with self‑extinguishing performance after leaving fire source. These characteristics greatly improve the operational safety of advertising light‑box facilities.

Light‑box panels made of PC Solid Sheet avoid risks of cracking and shattering. The panels can withstand hammer strikes and brick impacts without easy damage.

Beyond advertising light‑boxes, PC Solid Sheet is also applicable for highway noise barrier panels, carport and canopy roofing, safety glazing, machine‑tool observation windows and many other scenarios.

Specifications, Dimensions and Key Performance Parameters of PC Solid Sheet

Conventional Thickness

2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm

Standard Sheet Sizes

• Width: 1220 mm, 1560 mm, 1820 mm, 2100 mm
• Length: 2440 mm, 3050 mm, or unlimited custom cut‑to‑length within production range
• Common colors: transparent, translucent blue, green, smoky grey, opal milky white and other custom tinted options

Core Physical‑Performance Indicators

1. Light transmittance: transparent sheet 88%‑91%
2. Density: 1.20 g/cm³
3. Impact strength: over 200 times higher than ordinary glass, 30 times higher than acrylic sheet of equal thickness
4. Flame resistance: comply with UL‑94 V‑2 grade, self‑extinguishing once away from open flame, no toxic fumes released during combustion
5. Service temperature range:‑40 ℃ ~ +120 ℃, no obvious deformation within this temperature interval
6. Linear thermal expansion coefficient: 6.5×10⁻⁵ m/(m·℃); sufficient expansion gaps shall be reserved during installation
7. UV‑resistance: double‑sided surface UV‑coating; outdoor service life 10‑15 years for qualified products
8. Modulus of elasticity: approximately 2300 MPa
9. Rockwell hardness: M70