Open Bond Time Allows for Fit Adjustment and Positioning
3M™ Hot Melt Adhesive 3738 features a 50 second open time that allows for positioning and adjustment on wood, polypropylene, corrugated boxes and lightweight substrates. Its nearly instant bonding property reduces production time for POP assembly, joining, attaching, securing, repairing, potting, panel bonding, wire tacking, bundling, sealing, encapsulating, rigidizing, foam bonding, and packaging. For use with a 3M™ Hot Melt Applicator.
Recommended Applications
- Cabinetry
- Woodworking
- Sound damping
- Furniture manufacturing
- Upholstery
- POP displays
- General industrial
Understanding Hot Melt Adhesives
Hot melt adhesives, also known as glue sticks, are liquefied thermoplastic adhesives available in both low and high-temperature versions. Low temperature hot melt adhesives are applied at 250ºF/121ºC temperatures, which makes them ideal for bonding electronics, plastics, cloth and other heat sensitive materials. High temperature hot melt adhesives are applied at 380ºF/193ºC and produce a stronger bond than the low temperature hot melts.
Melted adhesive is extruded through a nozzle using a 3M Hot Melt Applicator by either pneumatic pressure, a mechanical trigger mechanism, or with pressure applied directly on the stick. Different nozzles can be used to apply thin, wide strips or narrow, thicker beads. Hot melt adhesive generally sets quickly, ranging from a few seconds to a few minutes, depending on the adhesive formulation.
Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

3M 62817, Adhesive Sealant 760 UV, Black, 290 mL Cartridge, 7100139449, 12/Case
3M 11411, Roloc Disc 361F, 50 YF-weight, TR, 1 in, Die R100N, 7000045095
3M™ 53797, Flexible Diamond Belt 6451J, 1/2" Dia x 18" L, M125 Micron, Type G, Pattern B2, 7010509272
3M 54305, Particulate Respirator 8110S, N95, 7000052065, 160 EA/Case
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 29902, Sanding Screen, 150 Grit, 12 in x 18 in, 7100160763
Dynabrade 51624 .1 hp Straight-Line Pencil Grinder, Central Vacuum, 35,000 RPM, 3mm Collet
Dynabrade 15420 Dynafile III Abrasive Belt Tool
3M 11137, Roloc Disc 361F, 50 YF-weight, TR, 1-1/2 in, Die R150S, 7000045094
3M 22970, Disc Holder Adapter 9, 5/8-11 External 3/8-24 Internal, 7000046093 
