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3M 4920 VHB Double-Sided Tape 100mm x 100mm Square Sheet – Acrylic Foam, High-Bond Strength, Replaces Screws & Welds
3M 4920 VHB Double-Sided Tape 100mm x 100mm Square Sheet – Acrylic Foam, High-Bond Strength, Replaces Screws & Welds
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1. Product Specifications (Technical Data)
| Property | Specification |
|---|---|
| Brand & Model | 3M™ VHB™ Tape 4920 |
| Dimensions | 100mm (W) × 100mm (L) Square Sheet |
| Tape Thickness | 0.4 mm (0.015 inches) – foam core only |
| Total Thickness (with liner) | 0.48 mm (liner thickness: 0.08 mm) |
| Color | White acrylic foam core with red-printed white release liner |
| Adhesive Type | General-purpose acrylic pressure-sensitive adhesive |
| Peel Adhesion (90°) | 26 N/10 mm (on stainless steel) |
| Tensile Strength | 1100 kPa (static pull on aluminum) |
| Static Shear Resistance | Holds 1500 g load at 22°C (0.5 sq. in. overlap) |
| Temperature Range | Continuous: 93°C (200°F) / Intermittent: 149°C (300°F) |
2. Why Choose 3M VHB Tape Over Traditional Fasteners?
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Invisible Attachment – Eliminates exposed screw heads, rivets, and weld marks. Creates a clean, smooth surface that improves product aesthetics and aerodynamic efficiency.
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Design Flexibility – Enables reliable bonding between dissimilar materials (e.g., metal to plastic). Requires no drilling, tapping, grinding, or curing time – simplifying assembly workflows and reducing labor costs.
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Immediate Handling Strength – Pressure-sensitive adhesive bonds instantly upon contact. No clamping or drying time needed, significantly boosting production throughput.
3. Typical Applications
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Automotive & Transportation – Exterior trim attachment, emblem/badge mounting, anti-slip pedal fixing.
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Electronics & Appliances – Internal structural bonding, display panel attachment, battery label lamination.
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Signage & Display – Channel letter mounting, exhibition stand assembly, acrylic display fixture bonding.
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General Industrial – Nameplate fastening, gasket replacement, and lightweight panel lamination.
4. Application Instructions (Best Practice Guide)
For maximum bond strength, follow these critical steps:
| Step | Action |
|---|---|
| 1. Surface Cleaning | Thoroughly remove dust, oils, moisture, and old adhesive residue. Recommended solvent: Isopropanol/water mixture (50/50) or heptane. Allow to evaporate completely. |
| 2. Surface Dryness | Ensure surfaces are completely dry before tape application. Moisture will compromise adhesion. |
| 3. Apply Pressure | After mating parts, apply firm and uniform pressure using a hand roller, press, or clamping fixture. Higher pressure = stronger bond. Target: ≥ 15 psi for optimal wet-out. |
| 4. Temperature Requirement | Ideal application temperature range: 21°C – 38°C (70°F – 100°F) . Avoid application below 10°C (50°F) – initial tack drops significantly. |
| 5. Bond Strength Build | Maximum bond strength develops over 24–72 hours at room temperature. Avoid stressing the joint during this period. |
Packaging & Storage Information
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Packaging – Individually wrapped or bulk-packed per order requirements (custom-cut sheets are usually separated by release paper to prevent sticking).
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Storage Conditions – Store in a cool, dry location at 21°C (70°F) and 50% relative humidity. Shelf life: 24 months from date of manufacture in original unopened packaging.
⚠️ Disclaimer
The technical data and performance values provided above are based on 3M official laboratory test reports and publicly available product bulletins. Actual performance depends on specific substrates, surface preparation methods, environmental conditions, and application techniques. We strongly recommend conducting your own adhesion tests using actual production materials and conditions before committing to bulk orders. The seller assumes no liability for performance variations resulting from improper use or inadequate surface preparation.
