Denlaks Primer 490 S Surface Preparation Solution (For PU & Greasy Leathers)

Denlaks Primer 490 S is a solvent-based surface preparation primer specifically developed to maximize bonding quality in the footwear manufacturing industry. It is an essential solution applied prior to adhesion, especially for PU (Polyurethane) soles and greasy leathers that have not undergone sanding or mechanical priming. Thanks to its heavy-duty chemical formula, it enhances surface tension and prevents sole peeling or adhesion failures. 

Key Features of Denlaks Primer 490 S

• Superior Adhesion Promotion: Dramatically improves the bonding performance of polyurethane adhesives on challenging substrates.
• No-Sanding Required: Specifically engineered for PU shoe soles where physical sanding is not applied.
• Greasy Leather Optimization: Provides an excellent chemical bond on oil-treated and greasy leather uppers.
• Solvent-Based Efficiency: Features a fast evaporation rate that keeps production lines running smoothly without delays. 

Application and Technical Details

• Substrates: All injection-molded or ready-made PU soles and greasy shoe upper materials.
• Application Method: Apply evenly as a thin coat onto the bonding surfaces using a clean brush.
• Open Time: Allow the solvent to evaporate fully before moving forward with the Denlaks polyurethane adhesive application.