3M™ VHB™ Tape 4991: Unleashing Robust Bonding and Sealing with Advanced Thickness

Key Highlights:‌

• Fast and Easy-to-Use:‌ Provides immediate handling strength with a permanent bonding method; no need to fixture or wait for a cure.
• Smooth and Seamless:‌ With a thickness of 90 mil (2.3 mm), it serves as an ideal alternative to mechanical fasteners like rivets, welds, and screws, or liquid adhesives.
• Built to Perform:‌ Delivers excellent shear strength, conformability, and surface adhesion thanks to its acrylic foam core and multi-purpose adhesive.
• Durable:‌ Offers outstanding outdoor durability and performance, resisting high and low temperatures, as well as moisture.
• Multi-Surface Adhesion:‌ Adheres to a variety of High Surface Energy (HSE) and Medium Surface Energy (MSE) substrates, including aluminum, stainless steel, galvanized steel, acrylic, polycarbonate, and ABS.
• Versatile Applications:‌ Commonly used across various markets such as transportation, appliance, electronics, construction, sign and display, and general industrial.
• Certified:‌ UL GREENGUARD™ and UL GREENGUARD™ Gold Certified, helping contribute to LEED® credits.
• Enables Material Flexibility:‌ Allows for the use of thinner, lighter-weight, and dissimilar materials compared to traditional fastening methods.
• Excellent Bonding and Sealing:‌ Features closed-cell acrylic chemistry, proven to withstand extreme environments.

Product Overview:‌
3M™ VHB™ Tape 4991 is a double-sided tape comprising a multi-purpose acrylic adhesive with a conformable foam core, backed by a 5 mil red printed polyethylene film liner. This configuration delivers a total thickness of 90 mil (2.3 mm) when applied. It provides an excellent balance of strength, conformability, and adhesion to high and medium surface energy materials, making it a smooth, seamless alternative to traditional fastening methods. Its unique attributes make it suitable for a wide range of bonding and sealing applications, including attaching metal panels to frames and stiffener attachment.

Convenience Meets Extreme Bonding Power:‌

• Durable Acrylic Adhesive:‌ Features viscoelastic properties that provide an extraordinarily strong double-sided foam tape.
• Broad Substrate Compatibility:‌ Adheres to a broad range of substrates, including metals, composites, plastics, acrylic, polycarbonate, ABS, and painted or sealed wood and concrete.
• Excellent Shear Strength:‌ Provides excellent shear strength, conformability, surface adhesion, and temperature resistance.

Recommended Applications:‌

• Decorative Material and Trim:‌ Ideal for attaching decorative elements and trim.
• Nameplates and Logos:‌ Perfect for mounting nameplates and logos securely.
• Electronic Displays:‌ Suitable for assembling and sealing electronic displays.
• Panel to Frame:‌ Provides strong bonding for panels to frames.
• Stiffener to Panel:‌ Ensures secure attachment of stiffeners to panels.

Part of the 4941 Family:‌

• Multi-Purpose Adhesive:‌ Utilizes multi-purpose acrylic adhesive on both sides of a conformable foam core.
• Versatile and Capable:‌ Known for its strength, conformability, and adhesion, making it one of the most capable and well-rounded 3M™ VHB™ Tapes.
• Specifically Designed:‌ For good adhesion to metals, glass, and other medium to high surface energy materials.

An Unconventional Foam Tape:‌

• Innovation Since 1980:‌ Part of the pioneering 3M™ VHB™ Tapes, combining conformability with strong, permanent bonds.
• Proven Alternative:‌ A trusted alternative to traditional mechanical fasteners, offering a consistent bond, outstanding durability, and excellent solvent and moisture resistance.
• Global Reliability:‌ Used in a wide range of applications from skyscrapers to cell phones, proven to withstand extreme temperatures from the heat of Dubai to the cold of Canada.

Proven Reliability and Innovation:‌

• Enhanced Appearance:‌ Enhances the appearance of finished goods by eliminating rivets and screws.
• Quick Application:‌ Fastening with 3M™ VHB™ Tape is quicker than drilling, fastening, or using liquid adhesive.
• Versatile and Resistant:‌ Chemically resistant and UV and temperature stable, making it a long-lasting and powerful tape you can trust.