Hardness is one of the parameters that best reflects the production process and technology of the acrylic sheet, and is an important part of quality control. The hardness can reflect the purity of the raw material PMMA, the weather resistance of the sheet, and the high-temperature resistance. The hardness directly affects whether the sheet will shrink and bend and whether the surface will be cracked during processing. Hardness is one of the hard and good indicators for judging the quality of acrylic sheets. The average Damoc hardness value is about 8 or 9 degrees.
2, thickness (acrylic tolerance)
Acrylic sheet thickness has acrylic tolerances, so the control of acrylic tolerance is an important manifestation of quality management and production technology. Acrylic production has an international standard ISO7823
Tolerance requirements for cast-in-place plates: tolerance = ± (0.4 + 0.1 x thickness)
Tolerance requirements for extruded plates: tolerance = < 3 mm thickness: ± 10 % > 3 mm thickness: ± 5 %
3, transparency / whiteness
Strict raw material selection, advanced formulation follow-up and modern production processes ensure excellent transparency and whiteness. After the flame is polished, it is crystal clear.