![]() ![]() Usually allowing in the range of 1% to 50% light transmission, translucent acrylic will allow light through, without showing the object behind. Translucent Acrylic: Acrylics that are translucent allow light through, but with significant diffusion or distortion. Opaque acrylics are used in applications where a solid color is desired with no light transmission requirements. An opaque piece of plastic will completely block out light when placed in front of a light source. Opaque Acrylic: Opaque acrylic will let minimal to no light through. Opacity and transparency both deal with the amount of light that can pass through an object, in this case acrylic or plexiglass plastic. Cast acrylic is more resistant to the same solvents, as well more resistant to scratching versus extruded ![]() Extruded acrylic tends to be more consistent in sheet thickness, while cast can vary as much as +/- 15% in thinner sizes. In laser cutting, extruded acrylic will have a rougher edge, whereas cast is generally smooth.Ĭast is more difficult to flame polish versus extruded. Laser engraving should only be done on cast acrylic to produce a clear engraved image. ![]() In addition, the shade of color may change. Matte-colored surfaces can become clear and clear surfaces can become matte or opaque. When colored cast acrylic is heated for thermoforming or heat bending, the color may change. In heat bending and thermoforming, extruded acrylic may behave differently depending on the bending direction relative to the extrusion direction. Extruded acrylic is a continuously manufactured acrylic sheet, resulting in a sheet offering with the easy handling and processing of extruded sheet, along with the high optical characteristics and low stress levels expected of cast products.Ĭast acrylic is more difficult to bend and shape versus extruded. ![]() It offers excellent optical characteristics, thickness tolerances, light stability, and low internal stress levels for consistent performance. Cast acrylic sheet is made to exacting standards. Easy to glue, hot air weld and machine.Īcrylic is produced in two basic variations, cast and extruded.Dozens of color options and variations.Outstanding resistance to long-term exposure to sunlight and weathering.It also has good impact strength, higher than both glass and polystyrene. It has a density of 1.17-1.20 g/cm3, which is less than half that of glass. Transmits up to 92% of visible light (3 mm thickness), and gives a reflection of about 4% from each of its surfaces on account of its refractive index. Applications are infinite, including art installations, outdoor signs, glazing, aircraft canopies, skylights, auto tail-lights, dials, buttons, lighting applications, knobs, and machine covers. Interstate Plastics offers a wide variety of Acrylic plastics to fit your specific application.Īcrylic, many times called plexiglass, is often preferred because of its moderate properties, easy handling and processing, and low cost, but behaves in a brittle manner when loaded, especially under an impact force. It has excellent optical properties and is more resistant to impact than glass.In addition, acrylic has low water absorption, good electrical resistivity, and fair tensile strength. Acrylic finished plastics, including plexiglass, have outstanding resistance to long-term exposure to sunlight and weathering. ![]()
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