3M™ Hot Melt Adhesive 3748

Products
  • Good thermal shock resistance
  • Bonds to polyolefins
  • 100 percent solids
  • Non-corrosive properties maintain the quality and strength of the adhesive over time
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3M™ Scotch-Weld™ Hot Melt Adhesive 3748-Q is a general purpose adhesive. Good thermal and electrical properties. Non-corrosive to copper.

Provides High Temperature Stability 175ºF / 79ºC for a Durable Bond
3M™ Hot Melt Adhesive 3748 provides good resistance to heat, impact, fuel and oil. It is manufactured using 100% solids, thermoplastic resin for use with a 3M™ Hot Melt Applicator. This adhesive provides high temperature stability 175°F / 79°C with a 25-second open time that is sufficient for fit positioning and adjusting. 3M™ Hot Melt Adhesive 3748  will bond wood, polypropylene, electronics, vinyl and lightweight substrates on furniture, automotive interiors, outdoor applications, small appliances and general product assembly.

Recommended Applications

  • Transportation interiors
  • Seating attachment
  • General product assembly

Understanding Hot Melt Adhesives
Hot melt adhesives, also known as glue sticks, are liquefied thermoplastic adhesives available in both low and high-temperature versions. Low temperature hot melt adhesives are applied at 250ºF/121ºC temperatures, which makes them ideal for bonding electronics, plastics, cloth and other heat sensitive materials. High temperature hot melt adhesives are applied at 380ºF/193ºC and produce a stronger bond than the low temperature hot melts. 

Melted adhesive is extruded through a nozzle using a 3M Hot Melt Applicator by either pneumatic pressure, a mechanical trigger mechanism, or with pressure applied directly on the stick. Different nozzles can be used to apply thin, wide strips or narrow, thicker beads. Hot melt adhesive generally sets quickly, ranging from a few seconds to a few minutes, depending on the adhesive formulation.

Bringing Better Ideas to the Surface through Science and Innovation
In our 3M Industrial Adhesives and Tapes Division, we apply the science of adhesion to deliver innovative solutions that improve the design and manufacturing processes of companies around the world. In the end, our technologies help customers like you deliver competitive products to the market faster and more efficiently.

  • Good thermal shock resistance
  • Bonds to polyolefins
  • 100 percent solids
  • Non-corrosive properties maintain the quality and strength of the adhesive over time
  • High peel adhesion delivers long-term strength and resilience
Specifications
Adhesive Type
Polypropylene
Application Method
Bulk Process, Handheld Process, Spray
Brand
3M™
Consumer Label
No
Heat Resistance
175 Degree Fahrenheit
Industries
Appliance, Automotive, Construction, Consumer Goods, Electronics, Furniture, General Industrial, Metalworking, Military and Government, Packaging, Retail, Signage, Specialty Vehicle, Transportation, Woodworking
Open Time
50 Second
Overall Length (Metric)
0.07 Metre, 0.2 Metre
Overall Width (Metric)
15.9 mm, 25.4 mm
Product Form
Pound
Shear Strength at 72 Degrees F (22 Degrees C)
250 psi
Solids Weight Percent (Approximate)
100 Percent
Temperature Setting for EC Heat Gun
4