Discussion on weather resistance of heat transfer wood grain powder coating

Discussion on weather resistance of heat transfer wood grain powder coating

Discussion on weather resistance of heat transfer wood grain powder coating

Wood grain powder coating weather resistance

1. Powder coating heat transfer wood grain effect formation principle

The principle of heat transfer wood grain effect formation is the transfer and penetration of wood grain dye (which is commonly used as: ink).

During the heating process in the wood grain heating oven, the surface of the transfer film is covered with aluminum profile coated surface to form a vacuum state, and the dye adheres to the wood grain film, with the heating temperature increase, the solvent of the medium dissolves and volatilizes, the thermal molecular motion of the wood grain film intensify, and the dye molecules penetrate through the gaps of the coating molecules, and most of the dyes are combined with the powder coating film to show the wood grain film dye color.

2.  Dye and wood grain powder coating

A good dye with good wood grain effect prime powder coating has a certain weather resistance, good dye with powder coating has good compatibility and better weather resistance.

Wood grain film manufacturers use three-color plate toning, making the dyes of three colors adjusted to close colors as much as possible, although the color matching is slow, but it is very stable good weather resistance; if the bright yellow dye is used as the base color, the color matching is fast, the layering is strong, but it is very unstable, the color difference between the batches is big.  

There will be big color differences vary from the powder-coated thickness and it is sensitive to the temperature and wood grain film thickness, and the base color yellow dye is most likely to be discolored, resulting in a decrease in weather resistance.

3. Weather resistance of polyester powder coating

Polyester powder coating with saturated carboxyl resin and TGIC curing agent as the main base, thermosetting powder coating with excellent weather resistance designed for exterior materials of building profiles, with 7 years of color stability and ten years of film integrity.

Polyester Super Weather-Resistant Powder Coating provides 15 years of color stability and film integrity.

4. Heat transfer wood grain effect powder coating

The resin and base materials of heat transfer wood grain powder coating, super weathering heat transfer wood grain powder and common polyester powder coating have a big difference. Considering paper easy removal and wood grain effect pattern, the curing reaction is more complete and cross-linking High density and high hardness. It should not be recoated when baking in a gas oven.

Heat transfer wood grain powder coating will have poor weatherability after the heat transfer wood grain effect process, which is caused by dye migration, or cause powdering, dye texture lightening to reveal the background color.

Outdoor use in high temperature and strong ultraviolet light environment, the wood grain effect color changes rapidly. If the background color is made close to the color of the wood grain effect film.

When the color of the wood grain dye changes, and the overall color difference does not change relatively. If the wood grain film manufacturer provides quality assurance, the powder manufacturer can also provide quality assurance when it is a specific color case.

The precondition is that the equipment and process of aluminum profile manufacturers must meet the standards (substrate, Pre-treatment, curing oven, wood grain oven up to standard, powder-coated film thickness, curing time to ensure paper release, vacuum wood grain temperature time and other process standards).

The weather resistance is 3-5 years if the quality process control can be meet. Powder coatings are the carrier, and good powder coatings provide better protection for the dyes and better weatherability.

Super weather resistant heat transfer wood grain powder coating, made of special monomer polyester and weather-resistant up to grade 5 and light resistance up to grade 8 pigment and base material, excellent color protection for wood grain, with color adjustment, After vacuum wood grain transferring process, the wood grain color can reach 5-10 years weather resistance.

With a transfer film without dye base color, the weather resistance is better. Powder coating manufacturers offer a 5-10 years quality guarantee in specific colors.

Not only wood grain effect sublimation machine, but also wood grain paper and film slitter, aluminum profile automatic bagging and ultrasonic welding machine, wood grain film ultrasonic sealing machine, Brightstar Aluminum Machinery provides the total solution for your wood grain effect aluminum profiles and aluminum sheets.

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