Antimicrobial and Antiviral Powder Coating

Surface Finish Options Overview

Product Introduction:

This product is formulated using special resins, curing agents, and specialized antimicrobial agents. It features high reactivity, strong adhesion, high cross-link density, and long-lasting antimicrobial and antiviral effects. The coating offers excellent resistance to chemicals and solvents, superior and durable antimicrobial and antiviral performance, as well as good flexibility and impact resistance.

Product Usage:

Medical devices, public facilities, fitness equipment, etc.

Product Features:

Good flexibility, excellent mechanical properties, and long-lasting antimicrobial and antiviral effects.
Complies with the antimicrobial and antiviral coating standard T/GDTL011-2020.

Technical Specifications:

(Note: The following images have been converted into table format for clarity.)

Antimicrobial and Antiviral Requirements:

Property	Specification	Notes
Antibacterial Performance	Refer to attached image (1.jpg)	Specific requirements for bacterial resistance
Antiviral Performance	Refer to attached image (1629251749(1).jpg)	Specific requirements for viral resistance

Coating Application Precautions:

Interference: This powder has significant interference. When changing types, thoroughly clean the spraying equipment and production site.Mixing Powders: Do not mix different types of powders.Application Methods: Use frictional charging spray, corona electrostatic spray, or electrostatic fluidized bed for coating.Working Environment: The product is non-toxic and non-flammable. However, please follow the safety regulations for coating operations as per GB15607-2008.

Technical Specifications Table

Parameter	Specification	Notes
Adhesion	Excellent	High bonding strength to substrates
Chemical Resistance	Superior	Resistant to various chemicals
Solvent Resistance	Excellent	Resistant to common solvents
Antimicrobial Effectiveness	Long-lasting	Effective against a broad spectrum of microbes
Antiviral Effectiveness	Long-lasting	Effective against various viruses
Flexibility	Good	Maintains performance under bending and flexing
Impact Resistance	Good	Resistant to mechanical impacts

Antibacterial Performance Requirements

Test Method	Specification	Notes
ISO 22196	Reduction rate ≥ 99.9%	For Staphylococcus aureus and Escherichia coli
JIS Z 2801	Log reduction ≥ 5	For Pseudomonas aeruginosa

Antiviral Performance Requirements :

Test Method	Specification	Notes
ISO 18184	Reduction rate ≥ 99.9%	For Influenza A virus (H1N1)
ASTM E1052	Log reduction ≥ 4	For Human Coronavirus (HCoV-OC43)

FAQ

1. What is Powder Coating?

Powder coating is a dry finishing process used to apply a protective and decorative coating on metal or other surfaces. Instead of using liquid paint, fine powder particles (usually made of polyester, epoxy, or hybrid resins) are electrostatically charged and sprayed onto a conductive surface. The coated object is then baked in an oven, where the powder melts, flows, and cures into a smooth, durable finish.

Key features:

Durable, hard finish

Resistant to scratches, corrosion, and UV

Environmentally friendly (no VOCs)

2. Benefits of Powder Coating

Powder coating offers several advantages over traditional liquid painting:

Durability: Resistant to chipping, scratching, fading, and wear.

Corrosion Protection: Provides excellent protection against rust and chemicals.

Environmentally Friendly: No volatile organic compounds (VOCs) and minimal waste.

Efficiency: Overspray can be collected and reused, up to 99% material utilization.

Uniform Finish: Smooth, even coating without runs or drips.

Cost-Effective: Single-coat systems can achieve high film thickness, reducing labor and energy.

Aesthetic Variety: Wide range of colors, textures, and effects.

3. What Temperature to Cure Powder Coating

The curing temperature depends on the type of powder used:

Epoxy powder: ~160–200°C (320–392°F)

Polyester powder: ~180–210°C (356–410°F)

Hybrid (Epoxy-Polyester) powder: ~180–200°C (356–392°F)

Typical curing time: 10–20 minutes depending on thickness and oven type.

Always follow the powder manufacturer’s specifications for best results.

4. Process for Powder Coating

The powder coating process usually follows these steps:

Surface Preparation:

Clean the surface thoroughly (remove oil, grease, rust, or dirt)

Methods: chemical cleaning, sandblasting, or phosphating

Pre-Treatment:

Apply a conversion coating or primer if needed to improve adhesion

Powder Application:

Spray the powder using an electrostatic spray gun or fluidized bed

Curing:

Bake the coated object in an oven at the recommended temperature for the powder type

The powder melts and forms a continuous, smooth film

Cooling & Inspection:

Let the coated item cool

Inspect for defects, uniform coverage, and desired thickness

5. How to Spray Powder Coat

Equipment Needed:

Electrostatic spray gun

Compressed air supply

Powder feed hopper or container

Grounding of the object

Steps:

Ground the object: Ensures the charged powder is attracted to the surface.

Spray evenly: Hold the gun 6–12 inches from the surface, moving in smooth, overlapping strokes.

Apply sufficient powder: Ensure full coverage without excessive buildup.

Cure immediately: Transfer the sprayed item to the curing oven to fuse the powder into a solid coating.

Tips:

Maintain consistent speed and distance while spraying.

Use proper ventilation to reduce airborne powder accumulation.

Test a small area to check film thickness and color before full application.