3M 3747
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Dissimilar-Substrate Hot-Melt Bonding
- Rapid Strength Development in Seconds
- 45-Second Open Time
Product Description
3M™ Hot Melt Adhesive 3747 is a 100% solids, thermoplastic general-purpose adhesive designed for bonding dissimilar substrates. Containing no VOCs, this tan-colored hot melt adhesive applies easily and sets in seconds without the need for clamping. It provides an open time of 45 seconds and is highly effective for a wide variety of assemblies, including joining wood to plastic and fabric to metal.
Key features
- Fast setting time: Adhesive sets and obtains high-performance strength in seconds, eliminating the need for clamping.
- Versatile bonding: General-purpose formulation easily bonds dissimilar substrates such as wood to plastic and fabric to metal.
- Easy to use: 100% solids, VOC-free formula provides a 45-second open time for easy handling on large assemblies and surfaces.
Applications / Suitable for
- Woodworking applications
- General industrial bonding
- Bonding dissimilar substrates like wood to plastic and fabric to metal
Technical Specifications
General Properties
Color
Color
Tan
Density (g)
Density (g)
0.97 g/cm3
Thermal Properties
Flash Point
Flash Point
509 °C
Physical Properties
Open time
Open time
<1 (45 seconds) minutes
Viscosity
Viscosity
4,100 mPa.s
Mechanical Properties
Peel Strength
Peel Strength
20 piw
Physical Properties
Softening point (Melting point)
Softening point (Melting point)
104 °C
Additional Information
Technical properties
As-supplied / before-processing properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Tan | - | Solid |
| Density | 0.97 | g/cm³ | - |
| Viscosity | 4,100 | cP | at 375°F |
| Flash Point | 509 | °F | Cleveland Open Cup ASTM D 92-72 |
| Open Time | 45 | seconds | 1/8" bead on non-metallic substrates at 75°F |
Technical properties
After-processing / final-state properties
Typical properties; these values are not intended for use in preparing specifications.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Shear Strength | 430 | psi | Overlap shear measured on Douglas Fir to Douglas Fir |
| Peel Strength | 20 | piw | Flexible canvas bonded to Douglas Fir |
| Heat Resistance | 145 | °F | Highest temperature supporting a 2 psi dead load (63°C) |
| Ball & Ring Melt Point | 220 | °F | ASTM E28-67 (104°C) |
