3M Primer 94 Adhesion Promoter (various capacities)

3M™ Primer 94 is a specialized adhesion promoter designed to enhance the bond of adhesive tapes, especially 3M™ VHB™ tapes, on challenging surfaces such as low surface energy plastics, concrete, glass, metal, and wood. Thanks to its fast drying time and easy application, it significantly improves the durability of adhesive bonds in many industrial and assembly applications.

Technical specification:

• Colour: yellow
• Capacity: 236 ml and 472 ml
• Consistency: liquid
• Application temperature: above 4°C
• Drying time: approx. 5 minutes (depending on temperature and humidity)

Application:

• Surface preparation before applying adhesive tapes
• Enhancing the adhesion of 3M™ VHB™ tapes
• Bonding to PE, PP, ABS, PET/PBT, concrete, wood, glass, metal, and painted surfaces
• Applications in the automotive, advertising, construction, and electronics industries

Benefits and properties:

✅ Strengthens tape adhesion – ensures more durable and stronger bonds
✅ Versatility – effective on many challenging surfaces
✅ Fast drying – accelerates the application process
✅ Easy application – no mixing required
✅ Compatible with 3M™ VHB™ tapes – proven in demanding projects

Application instructions:

Before application, clean the surface with a 50/50 isopropyl alcohol and water mixture, using a clean, lint-free cloth. Apply a thin layer of Primer 94 and allow it to dry completely (approx. 5 minutes). Only apply the tape after the primer has fully evaporated. Use at temperatures above 4°C.