In injection molding, zinc is required to spray lubricant, mold and mold lubricant should have the following properties.1. preventing zinc react with the surface of the mold.2. allows easier to flick pieces of work (reduces stiffness).3. make a mold, water, zinc oxide, not to touch the surface of the mould.4. facilitate the flow of water, zinc.5. do not affect slices (do not cause the bubbles.)6. easy to use7. do not harm health and are not flammable.Mold lubricant should be used because there is no risk of water-based type that caused the fire, no smoke is dangerous and not a masterpiece, but it washed up on not to use too much, because it will cause a lot of steam.
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