Highly polished or orange skin Lunac 1 mold release improving coating
The hardness, non-stick effect, anti corrosion for e.g. bio-degradable plastics and good cleaning capacity of Lunac 1 dominates the reason for applying this coating on molds. Added to that, the spectacular short Lunac 1 polish time for obtaining a roughness less than Ra = 0.02 µm (0.00079 µinch) or less, starting with a precedingroughness of Ra= 0.2 - 0.3 µm (0.0079 - 0.118 µinch) reduces the mold's production costs significantly. The very dense Lunac 1 surface is microscopically uniform and consequently very suitable for optical applications. Often used in combination with Lunac 2+ on closing surfaces to eliminate fretting and tribo-oxidation, Lunac 1 is applied to localizedareas of the product surface because of its long lasting corrosion resistance and hardness of HRc 65 after a hardening process.
The lamp cover molds displayed above show the 'flow polish' ' effect clearly. The left item shows the mold surface before a 50 µm (0.002") Lunac 1 coating was deposited. The user declared not to be able to obtain a good surface finish with this uncoated steel and the products gradually became dull. Lunac 1 is able to level out grinding and application scratches to a depth of 10 µm by this so called 'flow polish' effect and reduces the tendency for the surface to become dull as result of use. Lunac 1 coatings are very homogeneous and can even provide optically perfect surfaces. Especially perpendicular release can be highly facilitated by an orange skin if this higher roughness (+/- Ra 0.6 µm) is allowed or desired. Especially the rounded off structure is vital for the improved product release.
