Hardness is one of the parameters that best reflects the production process and technology of cast acrylic sheets, and is an important part of quality control. Hardness can reflect the purity of the raw material PMMA, the weather resistance and high temperature resistance of the board. Hardness directly affects whether the plate will shrink, bend and deform, and whether the surface will be cracked during processing. Hardness is one of the hardness indicators for judging the quality of acrylic sheets. The average Dallow hardness value is about 8 or 9 degrees.
Thickness (acrylic tolerance)
There are acrylic tolerances in the thickness of acrylic sheets, so the control of acrylic tolerances is an important manifestation of quality management and production technology. The production of acrylic has an international standard ISO7823
Tolerance requirements for cast plates: Tolerance=±(0.4 + 0.1 x thickness)
Tolerance requirements for extruded sheets: Tolerance = 3 mm Thickness:±5 %
Transparency
Strict raw material selection, advanced formula follow-up and modern production technology ensure excellent transparency and pure whiteness of the board. Crystal clear after flame polishing.