Due to its benefits in cost-saving & environment-friendly, Powder Coating for reinforced plastics has been a hot topic. Akzo-Nobel, the technical leader of the world coating, and also the world’s largest supplier in powder coating, has developed a new product traded as Impress.
Impress is the trade name for an in-mold powder coating process used as either a primer or a finish coat for compression molded reinforced plastic substrates including SMC、TMC、BMC & FRP.
[b]Features:[/b]
Fast free radical cure mechanism (no additional cure time in the mold)
High cross-link density (high hardness and chemical resistance)
Internal mold release (no need to spray on mold release agent)
Oxygen inhibited cure (enables chemical co-reaction with substrate)
Impress finish matches mold gloss, texture,
[b]Process[/b]
Apply powder to hot mold, 100-200 microns
Powder fuses, melts, flows, gels, 10-30 secs
Unreacted FRP into mold cavity
As press closes, substrate flows under heat and pressure to fill cavity, < 5 secs
Coating remains intact against mold surface
Substrate and coating co-react, 1-5 minutes
Coating releases as cured part is removed
[b]Benefits [/b]
Product durability and performance
Isolate fibers and pores from the surface
Reduce solvent penetration
Improved weathering possible
Homogeneous surface
Moving value to the surface