EV Charging Stations

Weathering, corrosion protection and texture stability outdoors

EV charging stations include outdoor charger housings, connector holders, cable guards and related facilities. Long-term exposure to ultraviolet radiation, rain, temperature changes and road contamination requires a balance of weatherability, stain resistance and decorative appearance.

Veri Coating offers super-durable polyester-TGIC textured powder coatings; fine-sand and wrinkle textures effectively conceal substrate imperfections, while selected TDS grades can target AAMA 2604 and are supported by xenon-arc and cyclic-corrosion testing.

Application notes: Film thickness and texture consistency should be controlled, welds and grounding points require particular inspection, and the recommended film thickness is 70-120 um.

Typical Powder Coating Challenges for EV Charging Stations

Resistance to Screen-Wash Solvents

EV charging-station enclosures may contact strong screen-wash or stencil-cleaning solvents during screen printing, rework or cleaning. Conventional polyester coatings may whiten, lose gloss, soften, become tacky or transfer colour during wiping; dark and low-gloss finishes are often more sensitive.

Formulation Design

Use a polyester system with higher crosslink density and solvent resistance; for demanding projects, evaluate a 90:10 polyester or polyurethane powder coating.
Reduce readily migrating waxes and surface additives while balancing matting, flow and chemical resistance.

Process Control

Validate with the customer's actual screen-wash solvent and specified wiping method; do not substitute a general-purpose cleaner.
Ensure full cure, because undercure markedly reduces solvent resistance, while avoiding overbake that causes discolouration.
Define contact time, wiping pressure and cleaning frequency, together with acceptable appearance change.

Validation Focus

Number of screen-wash wipe cycles
Colour/gloss after wiping
Surface softening or tack
Adhesion retention

Unstable Adhesion of Labels and Screen-Printing Inks

Labels, nameplates or screen-printing inks may lift, detach, lose print, dewet or develop blurred edges on powder-coated surfaces. Low-gloss, textured or highly slip-modified coatings, particularly those with migrating surface additives, reduce adhesive and ink wetting and bonding. Problems usually become more evident after damp heat and outdoor ageing.

Formulation Design

Control surface migration of waxes, flow agents and matting components to retain surface energy suitable for bonding and printing.
Subject to appearance and weathering requirements, select a smooth polyester system with a more stable surface condition.

Process Control

Test final colour, gloss and texture panels with the actual label adhesive, ink and primer.
Clean the surface before printing or labelling and prevent contamination by silicone, oil, release agent or dust.
Confirm full coating cure and control humidity, ambient temperature and surface temperature during labelling and screen printing.

Validation Focus

180° label peel
Cross-hatch/tape adhesion of screen print
Bonding after damp heat
Rub resistance and retention after ageing