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Interface-free varnish

High-solids, ultra-fast-drying clearcoat with excellent transparency, offering superior film hardness and consistently stable drying performance. Thanks to its exceptionally quick-drying properties, this product is ideal for small-area repairs on car body panels, as well as touch-up work for scratches and scuffs.

Category:

Paint

Topcoat and Matching Series

Interface-free varnish

Contact email:

sandy.wu@youzhimaterials.com

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Product details:

Interface-free varnish

Product Features

High-solids, ultra-fast-drying clear coat with excellent transparency, superior film hardness, and consistently stable drying performance.
Thanks to the product's ultra-fast drying properties, it is ideal for small-area repairs and scratch touch-ups on car body panels.

Applicable Substrate

The surface of the old varnish layer, thoroughly dried after grinding;
The surface of our company's 1K single-component base coat;
Top-grade single-component color paint based on acrylic resin.

Construction Techniques

Surface cleaning	Use a dust-free cloth to wipe clean surface dust and particles. (For the interface area, use a sticky lint roller to remove any remaining debris.)
Mixing ratio (volume ratio)	Varnish: Hardener 100 : 5 0
Available time	Use within 1 hour after mixing at 25°C (Recommended to estimate and mix the required amount as needed, then use it up completely)
Spray painting tools And atmospheric pressure	Gravity-fed (top-pot) 0.8mm - 1.4mm RP spray gun: 0.5 – 1.8 bar; HVLP spray gun: 1.5 bar When applying spray coating to a small area, adjust the spray gun's air pressure, flow rate, and spray pattern to optimal settings.
Number of Coating Passes / Film Thickness	Apply 2-3 coats Film thickness is approximately 40 ± 5 µm.
Flash-drying time	Allow interlayer flash drying for 2–3 minutes at 25°C. Allow to sit for 10–15 minutes (dust-free) before heating and baking.
Drying Time	Temperature	Dust-repelling time	Reachable Time	Assembly Time	Polishable Time
	25°C	20 minutes	30 minutes	60 minutes	2 hours
	60°C	10 minutes	20 minutes	20 minutes	30 minutes

Important Notes

When the temperature drops below 10°C in winter, it's not recommended to allow the paint film to dry naturally after spraying. Instead, we suggest using a baking oven to heat the area to around 60°C for about 30 minutes.
It is recommended not to spray large areas when the temperature exceeds 30°C;
If fish eyes are detected during the spraying process, immediately stop construction. Then, add 0.5%–1% of anti-sagging agent to the remaining paint before resuming spraying.
At the paint film joint, you can directly spray edge-sealing compound to achieve a flawless edge finish—refer to the specific edge-sealing instructions for details.
Varnish containing a curing agent should be used up as soon as possible and must not be saved for later use.
Please clean all spray tools immediately with a thinner after use, as they will become difficult to remove once hardened.
After spraying, if there are small particles or areas with sagging, you can wet-sand them with 1200–2000-grit sandpaper once fully cured, followed by wax polishing.
Shelf life: Store in a cool, dry place at 20°C. Unopened, with the original cap intact, it can be stored for up to 2 years.

Construction Operation Procedure Manual

	Before spraying operations: Check whether the sanding transition area of the old paint layer meets the requirements. Complete masking (reverse masking method recommended for interface areas) Thoroughly wipe clean with the degreaser, using a wet-and-dry approach. Use a dust blower combined with a sticky dust cloth to clean surfaces.		Spray Gun: Gravity Feed (Top Cup) 0.8mm–1.4mm Pressure: RP spray gun 05-1.8 bar; HVLP Spray Gun, 1.5 Bar When applying spray coating to a small area, adjust the spray gun's air pressure, paint output, and spray pattern to optimal settings.
	Spray-painted color coat: Prioritize color coating and spray-painting to cover and repair the central area, using an outward-to-inward application method for optimal results. Before each coat of color paint, use a sticky dusting cloth to evenly remove dust and debris, preventing uneven spots from forming. When making small-area repairs, adjust the appropriate spray gun air pressure and ensure the color paint has the right viscosity for optimal results. When repairing special colors or colors prone to showing imperfections, it is recommended to evenly apply a single-component clear resin layer or edge-sealing varnish—such as touch-up clear coat—over the area to be painted before spraying the color paint.
	Spraying varnish: The color coat has fully dried (the clear coat must be applied within 30 minutes after the color coat is sprayed). Before applying the clear coat, use a dust-removal cloth to evenly remove dust—even from areas outside the color coat—to prevent unevenness and the appearance of grit or speckling. The first coat of clear lacquer was applied with a wetness level of approximately 85%, and the spraying area did not exceed the boundaries of the colored paint application zone. After the first coat of clear lacquer achieves a non-tacky finish, apply the second coat; ensure 100% wetness during spraying, and keep the spray area within the sandpaper-sanded region.
	Rebuttal handling: When repairing small areas, apply the second coat of clear lacquer within the sanded area; after surface drying, proceed with baking for forced drying. Pour out the remaining clear coat from the spray gun, then mix the leftover clear coat in the gun cup with high-quality thinner at a 1:1 ratio. Spray 1–2 coats onto the area where the clear-coat interface meets the 2 cm mark, as well as on the sanded surface. Afterward, empty the clear coat again from the gun cup and directly add high-quality thinner to create a low-flow, high-frequency spray application specifically targeting the interface region. Use a direct water jet for precise edging, employing a low-flow, high-frequency spraying method. Use the interface water and follow the second method for edge sealing. It is recommended to limit the second clear-coat application to within 3–5 cm of the sanded edges.

Rebuttal Transition	Dry, chapped lips	Beveled Polishing Treatment	Seamless effect

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Our strengths

The company boasts a dedicated, in-house R&D team and currently holds multiple invention and utility model patents. In 2012, the company played a key role in drafting the industry standard HG/T 4561-2013, "Unsaturated Polyester Putty." Additionally, in 2021, it contributed to the development of a national standard—GB/T 41953-2022, "Paints and Varnishes—Determination of Moisture Content in Coatings by Gas Chromatography"—as well as the revision of another national standard: GB/T 6739, "Paints and Varnishes—Determination of Film Hardness by Pencil Method." In the coming years, the company plans to actively collaborate with several universities and research institutions through industry-academia partnerships, fostering innovation and co-developing cutting-edge products tailored to meet both customer needs and market demands. At the same time, we will continue strengthening our intellectual property strategy, with an ongoing focus on applying for and securing recognition for advanced technology projects. This includes pursuing certifications such as National High-Tech Enterprise status, Zhaoqing City High-Tech Enterprise designation, Guangdong Provincial Engineering Technology Research Center accreditation, and Zhaoqing City Engineering Technology Research Center certification, among others.

Factory Strength

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Factory Strength

Exhibition and trade shows

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Exhibition and trade shows

Qualifications and Honors

RoHS 2.0 Certificate for Unsaturated Polyester Putty

Quality System Certificate

Environmental Management System Certificate

Specialized, Specialized, and New Small and Medium-Sized Enterprises

Guangdong Provincial Engineering Technology Research Center

Qingyuan City Engineering Technology Research and Development Center

High-Tech Enterprise Certificate 2024

High-Tech Enterprise Certificate 2023

Invention Patent (A Preparation Method for Polyester Resin Suitable for Sprayable Atomic Putty, Atomic Putty Itself, and Its Preparation Method)

Invention Patent (A Solvent-Resistant Mud Yellow Eyeshadow and Its Preparation Method – Invention Patent Certificate)

A scrape-coated mid-coat automotive coating based on thermoplastic acrylic resin and its preparation method – Invention Patent Certificate

A High-Speed Rail Atomic Primer and Its Preparation Method – Invention Patent Certificate

A Dual-Axis Mixing and Dispersion Device for Coating Production – Utility Model Patent Certificate

A Tail Gas Recovery and Treatment System for a Coating Production Workshop – Utility Model Certificate

A Fully Automatic Water-Based Coating Filling and Weighing System – Utility Model Certificate

A Water-Based Coating Dispersion Vessel with a Dual-Dispersion Stirrer Head – Utility Model Certificate

An Eco-Friendly Coating High-Speed Dispersion Device – Utility Model Certificate

Utility Model Patent Certificate – A High-Level Coating Tank

Utility Model Patent Certificate – A Device for Pouring from Iron Drums

Utility Model Patent Certificate – A Resin Raw Material Storage Tank

Certificate of Honor 2

Certificate of Honor 1

Certificate of Honor