3

Hot Melt Adhesive

3747 • 3779 • 3789 • 3797

Technical Data

July, 2016

Product Description

3M™ Hot Melt Adhesives are heat applied, 100% solids adhesives. 3M™ Hot Melt

3747, 3779, 3789 and 3797 are thermoplastic adhesives to bond to wide variety of

substrates such as wood, plastic, vinyl, metal and glass.

3M™ Hot Melt Adhesive 3747

General purpose adhesive for bonding dissimilar

substrates such as wood to plastic, fabric to metal.

3M™ Hot Melt Adhesive 3779

High strength bonding with excellent

environmental stability including very high heat

resistance. Fast set time.

3M™ Hot Melt Adhesive 3789

High performance for plastic with good fuel, oil

and plasticizer resistance. Long open time.

3M™ Hot Melt Adhesive 3797

Low viscosity for fast flow rates, good high

temperature resistance, and fast set. Good for

electrical potting.

Features

 100% solids, no VOCs

 Easy to use

 Long open times allow for easy use on large assemblies and large surfaces

 Adhesive sets and obtains strength in seconds

 Creates high performance bonds

 Ideal for woodworking and general industrial applications.

Typical Physical

Properties

Note: The following technical information and data should be considered representative

or typical only and should not be used for specification purposes.

3M™ Hot Melt Adhesive

3747

3779

3789

3797

Color (solid)

Tan

Amber

Brown

Off-White

0.97

0.99

0.95

0.92

509

550

>392

570

(1) Determined by Cleveland Open Cup ASTM D 92-72.

Directions for

Use

1. Surface Preparation: Surfaces must be clean, dry and dust free. Wipe with a solvent

such as isopropyl alcohol for plastic, metal and glass substrates to remove oil and dirt.*

*Note: When using solvents, extinguish all ignition sources, including pilot lights, and

follow the manufacturer’s precautions and directions for use.

2. Application: 3M™ Hot Melt Adhesives are designed for application with a 3M™ Hot

Melt Applicators. Read and follow the precautions and directions for use in the user’s

manual before operating the applicator. 3M™ Hot Melt Adhesives are applied at 350-

385°F. Adhesives yield approximately 430 linear feet per pound of adhesive when

extruded as a 1/8” diameter semi-circular bead. Extruded bead sizes can be customized

using 3M™ applicator tips.