3M 4298UV Adhesion Promoter UV Fluorescent Primer for Acrylic Foam Tape PP TPO Automotive Trim Bonding

3M 4298UV Adhesion Promoter

The 3M 4298UV is a UV-fluorescent adhesion promoter (primer) engineered to maximize the bond strength of acrylic foam tapes on low-surface-energy (LSE) substrates such as polypropylene (PP) and thermoplastic polyolefin (TPO). Its UV-detectable formula allows quality inspection under UV light, making it an essential process control tool in automotive trim and assembly operations.

Key Features

• UV Fluorescent Formula: Glows under UV/black light for easy visual verification of application coverage during QC inspection
• Optimized for LSE Substrates: Dramatically improves adhesion of acrylic foam tapes to PP, TPO, and other low-energy plastics
• Acrylic Foam Tape Compatible: Designed for use with 3M VHB and other acrylic foam tape systems
• Fast Flash-Off: Solvent carrier evaporates quickly, minimizing process cycle time
• Thin, Uniform Film: Wipe-on application delivers consistent, controlled primer coverage
• Automotive Grade: Meets demanding OEM process and durability requirements for exterior trim bonding

Typical Applications

• Automotive exterior trim attachment (PP and TPO bumpers, cladding, moldings)
• Pre-treatment before acrylic foam tape bonding on LSE plastics
• Body side molding and emblem attachment
• RV, truck, and commercial vehicle trim assembly
• Industrial plastic bonding with foam tape systems

Usage Instructions

• Clean substrate thoroughly before application
• Apply a thin, uniform coat using a lint-free applicator or swab
• Allow to flash off (dry) for the recommended time before applying tape
• Inspect coverage under UV light to confirm complete application
• Apply acrylic foam tape within the recommended open time

Specifications

• Type: Solvent-based adhesion promoter / primer
• UV Detection: Fluorescent under UV/black light
• Compatible Substrates: PP, TPO, and other LSE plastics
• Compatible Tapes: 3M VHB and acrylic foam tapes
• Application Method: Wipe-on

Flammable — keep away from heat, sparks, and open flame. Use in well-ventilated areas. Wear appropriate PPE including gloves and eye protection. Store in a cool, dry location with container tightly sealed.