3M 3792LM

Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics

3M 3792LM

Main features

  • 121 to 132 deg C Application Range
  • 350 psi Typical Douglas Fir Overlap Shear
  • 40-Second Open Time

Product Description

3M Hot Melt Adhesive 3792LM is a clear, 100% solids thermoplastic hot-melt adhesive applied at 121 to 132 deg C for bonding heat-sensitive materials. Typical viscosity is 10,500 cP at 121 deg C, and typical open time is 40 seconds for a 3.2 mm semicircular bead on a nonmetallic surface at 24 deg C. It bonds wood, plain and coated corrugated board, foams, and many plastics. Typical overlap shear on Douglas fir is 350 psi at 23 deg C, while a separate temperature-resistance test gives 60 deg C under a 14 kPa dead load.

Key features

  • Low-temperature application: The recommended 121 to 132 deg C application range is intended for heat-sensitive bonding materials.
  • 40-second open time: The typical maximum application-to-joining interval uses a 3.2 mm semicircular bead on a nonmetallic surface at 24 deg C.
  • 350 psi Douglas fir overlap shear: Typical bond strength is measured at 23 deg C on Douglas fir.

Applications

Cabinetry and woodworking; coated-paper and polyolefin bonding; furniture and upholstery; foams and other heat-sensitive materials; point-of-purchase displays; general industrial assembly.

Product Family

3M 3792LM

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
Clear
Density (g)
1.01 g/cm3
Physical Properties
Open time
0.67 minutes
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
10,500 mPa.s
Thermal Properties
Flash Point
The flashpoint of a solvent is the lowest possible temperature at which it can vaporize to form an ignitable vapor. Flashpoint is often confused with “autoignition temperature”, which is the temperature at which a solvent ignites without an ignition source.
>232 °C
Temperature Resistance
Temperature resistance is the maximum temperature that the material or product can withstand for a period of time. The temperatures listed should be considered as guidelines for an operating temperature of about 30 minutes. Typically, the material can withstand much longer times at temperatures about 20°C lower and can withstand much higher temperatures for short, intermittent times.
60 ˚C
Chemical Properties
Melting Point
81
Other Properties
Storage Temperature
16 - 27 °C

Additional Information

Technical properties

As-supplied / before-processing properties

Values are typical and not specifications.

PropertyValueUnitMethod / condition
ColorClear-Solid adhesive
Density1.01g/cm^3Solid adhesive
Recommended application temperature121 to 132deg CLow-melt application
Viscosity10,500cP121 deg C; Brookfield Thermocel #27 at 10 rpm
Open time40s3.2 mm bead on nonmetallic substrate at 24 deg C
Delivery time57s25 x 76 mm PG cartridge
Technical properties

After-processing / final-state properties

Values are typical and not specifications.

PropertyValueUnitMethod / condition
Heat resistance60deg CHighest temperature supporting a 14 kPa dead load
Ball and ring melt point81deg CASTM E28-67
Overlap shear strength350psiDouglas fir bonded to Douglas fir
Peel strength13piwFlexible canvas bonded to Douglas fir

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