Preparation method of effect powder coating

Effect pigments impart unique and dazzling visual effects to powder coatings and are suitable for use in a variety of resin systems

1.

The conventional powder coating production method is to mix, extrude, crush and sieve all the raw materials in the formula, and most of the flake effect pigments are often destroyed during the processing due to the high shear force of the screw.

The flake structure of effect pigments will be severely damaged during high-speed pulverization, resulting in poor pigment orientation and reduced metallic or pearlescent effects of powder coatings

Aika has developed a powdersafe series of dust-free metallic powder pigments that can be directly extruded (internally extruded)

In addition, the melt-extruded metal powder coating has no metal pigment separation during the coating and overspraying recovery process.

2.

The effect pigment in the "dry" state is about to be added to the ground powder coating base powder.

3.

The flake metal pigment or pearlescent pigment is bonded to the surface of the base powder particles at a certain temperature, and the bonding machine fluidizes and suspends the base powder and effect pigment under the protection of inert gas N2, between the stirring paddle and the material particles and between the material particles.

Bonding metal powder has effect pigments, the dosage is small, the separation of effect pigments and base powder is not easy, and recycling is convenient, but the bonding process controls the softening point, bonding temperature and bonding time of the base powder -0.
Very strict, the bonding effect is also closely related to equipment design and process operation
.