Seamless Clear Coat

• Second Generation Seamless Clear Coat: Achieve Perfect Paint Repair with No Visible Lines

  

  Nov 15, 2025

  n the world of automotive refinishing, achieving a seamless repair with no visible marks or lines is crucial, especially after minor collisions. To meet the growing demands for flawless repairs, we are proud to introduce the WB-340 Second Generation Seamless Clear Coat. This advanced product offers superior performance, improved efficiency, and exceptional results that will make your vehicle’s paint look as good as new.   Key Features of the WB-340 Second Generation Seamless Clear Coat Stronger Adhesion, No Sanding Required, Just Polish and SprayWB-340 boasts enhanced adhesion, which allows for direct application on previously prepared surfaces without the need for additional sanding. This feature significantly speeds up the repair process, saving time and effort. Adjustable Viscosity, Matches OEM Orange Peel TextureThe viscosity of WB-340 can be adjusted to perfectly match the texture of the original paint. This makes it ideal for various car models, whether they have deep or subtle orange peel textures. For instance, European cars with heavy textures can be used without dilution, while Japanese cars with finer textures can be adjusted with a thinner. Seamlessly Fuses with Existing Paint, No Visible Repair MarksWB-340 seamlessly integrates with the old paint layer, leaving no trace of where the repair starts or ends. This makes it perfect for touching up minor collision damage or old paint repairs. Efficient Application, Time and Material SavingThis clear coat not only saves time due to its fast curing and easy application but also reduces material waste, offering a cost-effective and environmentally friendly solution for auto repair shops.   Step-by-Step Application and Performance Comparison To demonstrate the outstanding performance of WB-340, we performed a side-by-side comparison using two similar car doors to simulate a minor collision repair. PreparationStart by lightly sanding the car door, applying filler, and sanding again once it dries. After masking the edges, apply a base coat. Once the base coat is dry, use 400-600 grit sandpaper to smooth the surface. Then, use 2000 grit sandpaper with a polishing tool to ensure a smooth surface, ensuring any impurities from the old paint are removed. Application of WB-340 and Common Clear CoatOne car door was sprayed with WB-340 Seamless Clear Coat, and the other with a common clear coat found in the market. We used the same process on both doors to ensure a fair comparison. One of the key differences during the application is that WB-340 seamlessly blends with the existing paint, achieving a flawless repair. Baking and PolishingAfter 15 minutes of baking and 10 minutes of cooling, the surfaces were polished. The WB-340 door showed no visible transition marks between the original paint and the new clear coat, whereas the common clear coat had clear visible seams. Texture ComparisonWhen viewed from the side, the texture of the WB-340-treated surface perfectly matches the original paint, showing no signs of the repair. This is particularly noticeable on vehicles that require an exact texture match, such as German and Japanese models. Adhesion TestThe adhesion test was conducted by scoring both car doors with a crosshatch pattern using a blade. After applying masking tape and pulling it off, the WB-340-treated surface showed no peeling, while the common clear coat peeled off in some areas, showing the superior adhesion of WB-340.     The WB-340 Second Generation Seamless Clear Coat is a game-changing product in the automotive refinishing industry. Its excellent adhesion, adjustable viscosity, quick curing time, and flawless integration with old paint layers make it the perfect solution for achieving a seamless, high-quality finish in automotive repairs. Whether you’re restoring a minor scratch or performing a full panel repair, WB-340 ensures that your paintwork will be as good as new. If you are looking for a fast, reliable, and cost-effective way to restore your vehicle's paint, WB-340 is your go-to solution. Achieve the ultimate seamless finish with the second-generation WB-340 Seamless Clear Coat.  

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• WB-340 Seamless Clear Coat | The 2nd-Generation Upgrade for Invisible Blending Repair

  

  Nov 06, 2025

  1. Breaking the “Blend Edge” Problem in Automotive Refinishing In traditional car refinishing, one of the biggest challenges during clear coat application is the visible blend edge when spraying over an un-sanded old paint surface. This often leads to peeling, poor adhesion, or uneven gloss — all of which compromise the finish quality and reduce repair efficiency. WB-340 Seamless Clear Coat was developed precisely to solve this industry-wide issue. As the second-generation upgraded version, it features an advanced resin system and enhanced adhesion technology that allows new and old paint layers to naturally blend into one flawless surface, achieving a factory-quality finish without visible repair edges. 2. Core Advantages The strength of WB-340 lies in its ability to merge seamlessly with the existing paint surface — delivering an invisible repair effect both inside and beyond the blend area. Perfect Integration: Whether blending inside the sanded area or extending slightly beyond, WB-340 creates a smooth, boundary-free transition after polishing. Texture Matching: By adjusting viscosity, users can accurately reproduce the OEM texture of different vehicle types — • German cars: heavier texture (use as is, no thinner needed) • Japanese cars: finer texture (add thinner as required) Fast & Easy Application: Quick-drying performance makes it ideal for localized spot repair when used with 1K basecoat systems. High Transparency & Strong Adhesion: Can be applied directly on the cleaned and polished old surface, ensuring excellent adhesion, high gloss, and superior transparency. 3. Simple Application Steps for a Flawless, Invisible Finish WB-340 is user-friendly and highly tolerant — perfect for both professional and semi-professional painters. Step 1: Surface Preparation Sand the old paint surface with fine sandpaper and remove impurities. Apply and level putty, then sand smooth after drying. Mask edges with tape to ensure clean lines and minimal break zones. Step 2: Primer Application Apply primer and dry thoroughly. Sand to smooth using P400–P600, then finish with P2000 dry sanding. Polish surrounding areas for a natural blend transition. Degrease and remove dust before applying basecoat. Step 3: Clear Coat Application Mixing ratio: Clear coat : Hardener : Thinner = 100 : 50 : 0–10 (Recommended hardener: WB-345) Apply 1.5–2 coats with spray pressure 1–1.5 kgf/cm² and nozzle size 0.4–1.0 mm. Allow 2–3 minutes flash-off between coats before baking. Bake at 60 °C for 15 min for polishing, or 60 °C for 60 min for sanding/rework. Step 4: Polishing & Finishing Use a blending thinner to fine-tune the transition area. Test both: External blend: spraying beyond the old clear coat area Internal blend: spraying within the sanded area After 15 min baking + 10 min cooling, polishing reveals a completely seamless finish — no visible edge, even under reflective light. 4. Safety & Technical Notes 2K PU hardeners are moisture-sensitive — always seal tightly after use. Ensure the spray system is completely dry to prevent paint defects. Always wear protective masks and ensure proper ventilation. Avoid air drying; use infrared or temperature-controlled baking for best results. As conditions vary, conduct a compatibility test before large-scale application. Technical support is available for specific requirements. 5. Conclusion Whether for partial spot repair, used car refinishing, or premium body shops, WB-340 Seamless Clear Coat helps painters eliminate concerns about blend edges, drying times, and color mismatch. It allows professionals to focus on restoring a perfect glossy surface — delivering faster, higher-quality automotive refinishing results. WB-340 — the ultimate solution for efficient, flawless automotive repair.  

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