PPGI Definition and Purpose
PPGI steel plate refers to the metal substrate after the color roller coating unit, on the surface coated with a layer or multiple layers of organic coating and become a composite material.
The purpose of coating is to paint on the surface of the object with various methods, forming a dry protective film, so that it has the corrosion resistance to the atmosphere, pollution resistance and other properties to protect the matrix, at the same time to give color, gloss, decorative pattern, smooth, three-dimensional feeling, contact good and other advantages, make the object beautiful.
In special cases, there are electrical insulation, fire, anti – bacteria, anti – insect, bonding, marking, color regulation, temperature indication for the purpose of production.
PPGI Technological Process
Coating: coating thickness control is the key parameter in the production process of color coated plate.Coating thickness control has two control methods: one is the use of pressure sensor, one is the use of magnetic ruler control.
Roller coating is a coating method that forms a certain thickness of wet coating on the roller (roller) and then transfers part or all of the wet coating to the coated object.It is suitable for the production of flat plate or strip coating.