Acrylic thermoplastics (PMMA) are products of polymerization of acrylic esters. The materials are available in cast sheet, continuous cast and extruded sheet, film and a number of small pellets for injection molding and extrusion. Tubes and rods can also be cast or extruded.

Cell-cast sheet is produced in a variety of sizes and thicknesses. The largest sheets available are 120'' x 144''. Thicknesses range from 0.030'' to 4.25''. Continuous cast material is supplied as flat sheet and in coils in lengths to 600' and widths to 110''. Maximum thickness is 1/2''. Acrylic sheet cast in the continuous process (between stainless steel belts) is more uniform in thickness than cell-cast sheet. Cell-cast sheet, on the other hand, which is cast between glass plates, has superior optical properties and surface qualities. Also, cell-cast sheet is offered in a greater variety of colors and compositions. Cast acrylic sheet is supplied in general-purpose grades and in ultraviolet absorbing, mirrored and superthermoformable sheet grades.

All cast acrylic grades are strong, stable, weather resistant and thermoformable. Sheets are also available in transparent, translucent and opaque colors, and in a variety of surface textures.

Extruded sheet is produced by forcing acrylic pellets through a conventional screw extruder. The acrylic is melted and pushed through a sheet die in a continuous process allowing for a variety of widths and lengths within practical or economical limits.

For more information, contact Mike at Ultra Acrylics, Inc.