Pre painted rolled aluminium coil refers to continuous and uninterrupted acceptance of degreasing, chemical pretreatment and color coating on aluminium substrates. spraying color coated aluminum sheet is done by spraying gun after bending aluminium sheet into eaves and ditches.
The difference between Pre painted rolled aluminium coil and spraying color coated aluminum sheet as follow：
- Different painting methods and processes, Pre painted rolled aluminium coil is three coatings: surface coating is a color-displaying coating, bottom coating is a coating between surface coating and aluminium plate, to enhance the firmness of the bond between surface coating and aluminium plate; back coating is an anti-corrosion coating on the back of aluminium plate, to enhance the anti-corrosion ability of the color coated plate. Spraying has only one layer of hand-made surface.
- Pre painted rolled aluminium coil with back coating, spraying without Dragonfly
(1) Whether thePre painted rolled aluminium coil is on the base material or in roll shape, according to the required thickness of the paint layer, it is controlled by the computer through pickling and leveling procedures on the pipeline, and it is finished in a relatively closed space through several bakes and bakes. The roll is coated with a roll of aluminium sheet coated with paint.
(2) Baking: Pre painted rolled aluminium coil for two baking, above commonly referred to as three coating for two baking, spraying color coated aluminum sheet for one baking.
(3) Coating thickness: Pre painted rolled aluminium coil thickness uniform, spraying for manual operation, relatively not uniform, less time, easy aging color difference.
3.Pre painted rolled aluminium coil can meet higher detection requirements. The detection methods of color coated aluminium sheet usually include impact test, scratch test, T value test, solvent resistance test and aging resistance test.
- Different Price Costs
The cost of Pre painted rolled aluminium coil is about 15% higher than that of spraying, and the ceiling of roll coating is 10%-20% more expensive than that of spraying in the home decoration market.