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3M™ VHB™ Tape 4646

products
  • Fast and easy-to-use permanent bonding method provides high temperature strength and long-term durability
  • Virtually invisible fastening keeps surfaces smooth
  • Dark Grey, 25 mil (0.6 mm), general purpose adhesive with firm foam has added feature of high temperature resistance
  • Can replace mechanical fasteners (rivets, welds, screws) or liquid adhesives
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Specifications
Applications
Alternatives to Rivetting or Welding, Impact resistant, Mounting and Trim Attachment, Panel to Frame/Stiffner to Panel Assembly, Seam and Joint Sealing, Semi-Structural Bonding, Small Joint Assembly, Vibration resistant
Application Temperature-Environment
50 Degrees Fahrenheit, 50F-59F
Backing Material
Foam
Backing Thickness (Imperial)
5 mil
Brand
VHB™
Carrier Material
Acrylic Foam
Core Size (Imperial)
3 in
Design Challenges
Impact & Shock Absorption, Noise Vibration & Harshness Control NVH
Flame Retardant
N/A
Foam Conformability
Firm, Very Conformable
Indoor/Outdoor
Both
Industries
General Industrial, Metalworking
Maximum Operating Temperature (Celsius)
149 °C
Maximum Operating Temperature (Fahrenheit)
300 °F
Net Weight (Metric)
14.43 kg, 2.2 kg
Position
Better
Primary Liner
Polyethylene (PE) Film
Product Form
Roll
Set Time
<10 Second
Substrate
Bare Metal, Glass, HSE Plastics and Glass, Metal, Painted Surface, Easy-to-Bond (HSE), Plastic, Easy-to-Bond (HSE), Rough Surfaces
Substrate 2
Bare Metal, Glass, HSE Plastics and Glass, Metal, Painted Surface, Easy-to-Bond (HSE), Plastic, Easy-to-Bond (HSE), Rough Surfaces
Temperature Resistance - Initial
300 °F, 450 °F
Units per Case
1, 12, 2, 9
Details
  • Fast and easy-to-use permanent bonding method provides high temperature strength and long-term durability
  • Virtually invisible fastening keeps surfaces smooth
  • Dark Grey, 25 mil (0.6 mm), general purpose adhesive with firm foam has added feature of high temperature resistance
  • Can replace mechanical fasteners (rivets, welds, screws) or liquid adhesives
  • Pressure sensitive adhesive bonds on contact to provide immediate handling strength
  • Eliminate drilling, grinding, refinishing, screwing, welding, and associated clean-up
  • Allows the use of thinner, lighter weight and dissimilar materials

Dream, design, deliver with 3M™ VHB™ Tape 4646. It is a dark grey, 25 mil (0.6 mm), general purpose adhesive with firm foam that has the added feature of high temperature resistance. The fast and easy to use permanent bonding method provides high strength and long-term durability. It offers design flexibility with its viscoelasticity and powerful ability to bond to a variety of surfaces.

3M™ VHB™ Tape 4646 is in the 4611 family of 3M™ VHB™ Tapes. These tapes utilize general purpose adhesive on both sides of firm foam. High temperature capability makes this family often suitable for bonding prior to high temperature paint processing. It is typically used on metal substrates such as aluminum, galvanized steel, and stainless steel. Applications for this tape include stiffener and panel attachment, including assembly before paint ovens, as well as decorative material and trim.

Suggested Applications

  • Stiffener to panel
  • Panel to frame
  • Decorative material and trim
  • Nameplates and logos
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