3M™ Hot Melt Adhesive

3776LM • 3792LM • 3738 • 3792

Directions for

Use

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

as isopropyl alcohol for plastic substrates to aid in removing 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, except

the Low Melt (LM) series which are designed to be applied at 250-275°F. LM series are

adhesives designed for lower temperature application but still yield long-lasting bonds.

Extruded bead sizes can be customized using 3M™ applicator tips.

3. Coverage: 3M™ Hot Melt Adhesives yield approximately 430 linear feet per pound of

adhesive when extruded as a 1/8” diameter semi-circular bead.

4. Set up time: After the bond is made, 3M™ Hot Melt Adhesives immediately build

strength and no clamping is necessary. Set will occur faster on cold or metallic

substrates.

Typical

Application

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

3776LM

3792LM

3738

3792

Application

250-270°F/

121-132°C

250-270°F/

121-132°C

350-385°F/

177-196°C

350-385°F/

177-196°C

8,250 @

250°F

10,500 @

250°F

2,875 @

375°F

5,000 @

375°F

Open Time

40

40

50

50

Delivery Time

47

57

35

45

Available

sizes/forms

5/8”x8”Q

1”x3” PG

1/2”x12”AE

5/8”x8”Q

5/8”x2” TC

1”x3” PG

1/2”x12”AE

1/8” Bulk

5/8”x8”Q

5/8”x2” TC

1”x3” PG

1/2”x12”AE

1/8” Bulk

5/8”x8”Q

5/8”x2” TC

1”x3” PG

1/2”x12”AE

1/8” Bulk

(1) Recommended application temperature range. Temperature can be adjusted to regulate desired

viscosity, delivery rate and pot life.

(2) Brookfield Thermocel Viscometer in Centipoise using a #27 Spindle @ 10 RPM.

(3) Open time is the maximum time between the application of the adhesive and when the parts

must be joined together. Data based on 1/8" semicircular bead on non-metallic substrates at 75°F.

Higher environmental temperatures and/or larger beads will lengthen open times.

(4) Extrusion time for one 1”x3” PG cartridge.