Then, the 98 micron-thick cover layer is applied using UV-curable liquid optically clear adhesive, and a 2 micron-thick hard coat (such as Durabis) is also applied and cured using UV light. In the last step, a 10 nanometre-thick silicon nitride barrier layer is applied to the label side of the disc to protect against humidity. Blu-rays have their data very close to the read surface of the disc, which is necessary for Blu-rays to achieve their capacity.
then the 98 micron-thick cover layer is applied using uv-curable liquid optically clear adhesive and a 2 micron-thick hard coat (such as durabis) is also applied and cured using uv light in the last step a 10 nanometre-thick silicon nitride barrier layer is applied to the label side of the disc to protect against humidity blu-rays have their data very close to the read surface of the disc which is necessary for blu-rays to achieve their capacity