3M™ Tape Primer 94

3M™ Tape Primer 94 is a highly effective liquid adhesion promoter specifically formulated to drastically improve the bonding strength of 3M™ VHB™ Tapes and other double-sided adhesive products. It is an absolute necessity when attempting to adhere tapes to notoriously difficult, low surface energy substrates such as polyethylene (PE), polypropylene (PP), ABS, and PET/PBT plastic blends. By altering the surface chemistry of the substrate, Primer 94 ensures that the acrylic foam tape can properly wet-out and establish a permanent, structural bond.

Beyond plastics, this versatile primer is also highly recommended for preparing porous or challenging surfaces like bare concrete, raw wood, glass, and certain painted metals prior to tape application. It applies easily via a brush, swab, or pressurized flow gun, drying rapidly to form a clear, tacky film that is immediately ready for tape application. Incorporating 3M Tape Primer 94 into the assembly workflow guarantees maximum adhesion performance, preventing costly delamination failures in severe environmental conditions.