Bonds Well to Polyolefin Based Plastics
Engineered to deliver excellent results, 3M™ Hot Melt Adhesive 3731 provides high heat resistance up to 265?F/129?C without lifting or deformation. This hot melt adhesive bonds well to a variety of substrates and is an ideal adhesive for bonding polyolefin based plastics, including polyethylene and polypropylene. In addition, 3M™ Hot Melt Adhesive 3731 is fast setting, with an open bead time of 30 seconds, for applications requiring quick bond times. Designed to provide good peel strength, 3M™ Hot Melt Adhesive 3731 creates a resilient bond that is long-lasting, offering confidence and peace of mind for a wide range of applications. For use with the 3M™ Hot Melt Applicator EC or 3M™ Hot Melt Applicator TC.
Recommended Applications
- Ideal for bonding polyolefin based plastics
- For applications requiring quick bond times
Understanding Hot Melt Adhesives
Applied with 3M Adhesive Applicators, hot melt adhesives extrude as liquefied thermoplastic to fill gaps and wet entire bonding surfaces before setting. As a result, they often exceed 100 psi shear strength for quick, convenient strength. Hot melt adhesives are used for bonding a wide variety of materials ranging from wood to corrugated cardboard, heat-sensitive foam, plastics and metals. Unlike mechanical fasteners or sealing tapes, hot melt adhesives are virtually invisible between mating surfaces. These 100% solids thermoplastic resins are available in a variety of strengths, temperatures and pen time/bonding ranges to meet your specific application demands.

Standard Abrasives 727399, Buff and Blend Cross Buff HS, A/O Medium, 2 in x 3/4 in x 2 Ply x 1/4-20, 7000047137
Standard Abrasives 725014, Buff and Blend Cross Buff GP, A/O Coarse, 1-1/2 in x 1/2 in x 2 Ply x 8-32, 7000121820
Standard Abrasives 725011, Buff and Blend Cross Buff HP, A/O VFN, 3/4 in x 3/8 in x 2 Ply x 8-32, 7000047134
3M 89613, Fibre Disc 782C TN Quick Change, 4-1/2 in 80+, 7100099269
3M 89591, Fibre Disc 782C, 36+, 7 in x 7/8 in, Die 700BB, 7100099271
3M 36507, Green Corps Fibre Disc 36507, 5 in x 7/8 in, 40, 7100225415, 20 Discs/Bag
Standard Abrasives 727459, Buff and Blend Cross Buff HP, A/O VFN, 1.25 in x 1/2 in x 3 Ply x 8-32, 7100017838
3M 27655, Cubitron II Fibre Disc 987C, 60+, 7 in x 7/8 in, Die 700BB, 7000148158
3M 27724, Cubitron II Fibre Disc 982C, 60+, GL Quick Change, 5 in, Die G500P, 7010326432
3M 27404, Cubitron II Fibre Disc 982C, 36+, TN Quick Change, 5 in, Die TN500P, 7000119161
3M 64447, Scotch-Brite Cross Buff, 1-1/2 in x 1/2 in x 2 PLY x 8-32 High Strength A VFN, 7000121125
Standard Abrasives 530195, Zirconia Resin Fiber Disc, 5 in x 7/8 in 80, 7010331401
3M 50751, Roloc Fibre Disc 501C, 36, TSM, 3 in, Die RS300VM, 7010325721
3M 27469, Cubitron II Fibre Disc 987C, TN Quick Change, 4-1/2 in, 36+, 7000144096
3M 87253, Cubitron II Fibre Disc 987C, 80+, 4-1/2 in x 7/8 in, Die 450E, 7100109862
3M 77601, Fibre Disc 381C, 120, 4-1/2 in x 7/8 in, Die 450E, 7100055270
3M 16580, Accuspray ONE Spray Gun System with Standard PPS, 7100099202
3M 19677, Scotch-Seal Industrial Sealant 800, Reddish Brown, 1 Gallon Drum, 7000000793, 4/Case
Standard Abrasives 541151, Quick Change TS P.A.R.T. #21 Disc Mandrel, 5/8 in TA4 (PILOT), 7000121723 
