| Application Type | Bond |
|---|---|
| 1 Part or 2 Part | 1 Part |
| Material Form | Sticks |
| Substrate | Acrylic, Fabric, ABS, Corrugated, FRP, HDPE, Douglas Fir, Plastics, PolyEthylene, Polyolefin, Polystyrene, Polystyrene Foam |
| Manufacturer | 3M |
| Chemistry | Polyolefin, Hot melt |
| Cure Method | Hot melt |
| Cure Time (min) | Fast |
| Viscosity (cPs) | 12,000 |
| Color | Light Tan |
| High Temperature Resistance (°C) | 54, High Heat Resistance |
3M™Jet-melt™ Polyolefin Bonding Adhesive 3731 is designed for applications using a 3M™ Polygun™ EC Applicator at the 4 or 5 module setting or a 3M™ Polygun™ II Applicator.
Recommended equipment temperature for bulk dispensing 350-375°F (177-191°C).
Apply to one surface. Make bond as soon as possible. Bond strength is maximized when open time is reduced.
After bond is made, there is immediate strength and no clamping is necessary.
Adhesive should be allowed to fully crystallize (possibly up to 12 hours) to obtain full performance properties.
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| Viscosity | Test Method | Temperature |
|---|---|---|
| 12,000 cPs | Brookfield Thermocel Viscometer in Centipoise using a #27 Spindle @ 10 RPM. @ 375°F1 191°C | 191°C |
| Shear Strength | Type | Substrate |
|---|---|---|
| 550 psi | Overlap shear strength | Polypropylene |
| 420 psi | Overlap shear strength | HDPE |
| 450 psi | Overlap shear strength | ABS |
| 430 psi | Overlap shear strength | PVC (Rigid) |
| 257 psi | Overlap shear strength | Polystyrene (High Impact) |
| 430 psi | Overlap shear strength | Polycarbonate |
| 475 psi | Overlap shear strength | Nylon 66 |
| 490 psi | Overlap shear strength | Douglas Fir |
| 390 psi | Overlap shear strength | Cold Rolled Steel |
| Peel Strength | Type | Substrate |
|---|---|---|
| 22 piw | 180° Peel strength | Canvas to Polypropylene |
| 23 piw | 180° Peel strength | Canvas to HDPE |
| 23 piw | 180° Peel strength | Canvas to ABS |
| 18 piw | 180° Peel strength | Canvas to P.V.C. (Rigid) |
| 15 piw | 180° Peel strength | Canvas to Polystyrene (High Impact) |
| 22 piw | 180° Peel strength | Canvas to Polycarbonate |
| 19 piw | 180° Peel strength | Canvas to Nylon 66 |
| 15 piw | 180° Peel strength | Canvas to Cold Rolled Steel |
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