3M™ Scotch-Weld™ Hot Melt Adhesive 3731

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  • Solvent-free, 100% solids adhesive
  • Bonds well to polyolefin based plastics
  • High-temperature resistance to 265°F/129°C
  • Fast-setting for quick, effective results
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  • Product Form
    Overall Length (Imperial)
    Overall Length (Metric)
    Overall Width (Imperial)
    Overall Width (Metric)
    Product Colour
  • 3M™ Scotch-Weld™ Hot Melt Adhesive, 3M7100020337, tan, 1 in x 3 in (2.54 cm x 7.62 cm)
    Product Form
    Pound
    Overall Length (Imperial)
    3 in
    Overall Length (Metric)
    0.07 m
    Overall Width (Imperial)
    1 in
    Overall Width (Metric)
    25.4 mm
    Product Colour
    Tan
  • 3M™ Scotch-Weld™ Hot Melt Adhesive, 3731-TCQ , tan, 5/8 in x 8 in (1.59 cm x 20.32 cm)
    Product Form
    Pound
    Overall Length (Imperial)
    8 in
    Overall Length (Metric)
    0.2 m
    Overall Width (Imperial)
    0.62 in
    Overall Width (Metric)
    15.9 mm
    Product Colour
    Tan
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Specifications
Adhesive Type
Polypropylene
Alternative Sale Availability
6. This item is for industrial use only and there are no VOC restrictions.
Application Method
Handheld Process, Spray
Brand
3M™
Colour Family
Beige
Form
Flowable Liquid
Heat Resistance
265 Degree Fahrenheit
Heat Resistance (Celsius)
129.4℃
Industries
Automotive, Construction, Consumer Goods, Electronics, Furniture, General Industrial, Military and Government, Packaging, Retail, Signage, Specialty Vehicle, Transportation, Woodworking
Maximum Operating Temperature (Fahrenheit)
265 °F
Net Weight (Imperial)
11 lb, 22 lb
Net Weight (Metric)
5 kg
Open Time
35 Second
Overall Length (Imperial)
3 in, 8 in
Overall Length (Metric)
0.07 m, 0.2 m
Overall Width (Imperial)
0.62 in, 1 in
Overall Width (Metric)
15.9 mm, 25.4 mm
Product Colour
Tan
Product Form
Pound
Product Key
3731 Q
Regulatory Key
AD-02339
Shear Strength
490 psi
Size (Imperial)
0.62 in x 8 in, 1 in x 3 in
Size (Metric)
15.9 mm x 0.2 m, 25.4 mm x 0.07 m
Solids Weight Percent (Approximate)
100 Percent
Substrate
Plastic, Hard-to-Bond (LSE)
Substrate 1
Plastic, Hard-to-Bond (LSE)
Substrate 2
Plastic, Hard-to-Bond (LSE)
Temperature Setting for EC Heat Gun
4 or 5
Details
  • Solvent-free, 100% solids adhesive
  • Bonds well to polyolefin based plastics
  • High-temperature resistance to 265°F/129°C
  • Fast-setting for quick, effective results
  • Provides good peel strength, creating tough and resilient bonds

3M™ Scotch-Weld™ Hot Melt Adhesive 3731 is a 100% solids, high heat resistant thermoplastic adhesive that liquefies to bond to a variety of substrates, including polyethylene, polypropylene, and other plastics.

Engineered to deliver excellent results, 3M™ Scotch-Weld™ Hot Melt Adhesive 3731 provides high heat resistance up to 265°F/129°C without lifting or deformation. This hot melt adhesive bonds well to a variety of substrates and is an ideal adhesive for bonding polyolefin based plastics, including polyethylene and polypropylene. In addition, it is fast setting, with an open bead time of 30 seconds, for applications requiring quick bond times. Designed to provide good peel strength, 3M™ Scotch-Weld™ Hot Melt Adhesive 3731 creates a resilient bond that is long-lasting, offering confidence and peace of mind for a wide range of applications. For use with the 3M™ Scotch-Weld™ Hot Melt Applicator EC or 3M™ Scotch-Weld™ Hot Melt Applicator TC. Applied with 3M™ Adhesive Applicators, hot melt adhesives extrude as liquefied thermoplastic to fill gaps and wet entire bonding surfaces before setting. As a result, they often exceed 100 psi shear strength for quick, convenient strength. Hot melt adhesives are used for bonding a wide variety of materials ranging from wood to corrugated cardboard, heat-sensitive foam, plastics, and metals. Unlike mechanical fasteners or sealing tapes, hot melt adhesives are virtually invisible between mating surfaces. These 100% solids thermoplastic resins are available in a variety of strengths, temperatures, and pen time/bonding ranges to meet your specific application demands.

Suggested Applications

  • Ideal for bonding polyolefin based plastics
  • For applications requiring quick bond times