Thermoforming
3 Aufrufe
Poor Electroplating/Spray Coating Adhesion of Biaxially Oriented Polypropylene Film Products
Problembeschreibung
After electroplating or spray coating, the coating adhesion of the product is poor, and it is prone to blistering or peeling.
Ursachenanalyse
(1) The surface tension of the product is insufficient, and the coating is difficult to adhere
(2) There are release agent or oil residues on the product surface
(3) The internal stress of the product is large, affecting the coating adhesion
(4) The pretreatment before electroplating/spraying is insufficient
(5) The coating material does not match the base material
Lösung
(1) Perform corona or flame treatment on the product surface
(2) Ensure the product surface is clean and free of release agent
(3) Reduce the internal stress of the product (annealing treatment)
(4) Strengthen the pretreatment (degreasing, roughening, etc.)
(5) Select a matching coating material
Wichtigste Erkenntnis
The electroplating and spraying adhesion is determined by the surface energy and surface condition.
War das hilfreich?
0 Personen fanden dies hilfreich
Vielen Dank für Ihr Feedback!