AFTC 5391
AFTC 5391 is a double sided, closed cell acrylic foam tape with a permanent Acrylic Coating 40 adhesive system on both faces, available at 0.090″ thickness. It is designed for bonding high and medium energy substrates — including PVC, ABS, glass, steel, aluminum, and ceramics — with a 90° peel adhesion of 23 lb/in and very high initial tack. The tape maintains high impact resistance below 0°C and is rated for long-term service up to 212°F and short-term exposure up to 320°F, with UV, solvent, and water resistance all rated excellent.
Key Properties
- 90° Peel Adhesion: 23 lb/in (ASTM D3330)
- Dynamic Shear Strength: 73 lb/in² (ASTM D1002)
- Tensile Strength: 73 lb/in² (ASTM D897)
- Long-Term Temperature Resistance: 212°F
- Liner / Carrier: Red PE liner; Conformable Acrylic Foam core
- Total Tape Thickness: 0.090″ ±10%
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- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.090″ ±10% | — |
| Color | Gray | — |
| Material / Substrate | Coated Acrylic Foam | — |
| Core | Conformable Acrylic Foam | — |
| Adhesive Type | Acrylic Coating 40 | — |
| Adhesive System | Permanent Adhesive | — |
| Adhesive Side | Double Sided Adhesive | — |
| Liner | Red PE liner | — |
| Density | 52 lb/ft³ | — |
| Cell Structure | Closed Cell | — |
Adhesion Properties
| Property | Value | Test Method |
| 90° Peel Adhesion | 23 lb/in | ASTM D3330 |
| Dynamic Shear Strength | 73 lb/in² | ASTM D1002 |
| Tensile Strength | 73 lb/in² | ASTM D897 |
| Static Shear Strength @ 72°F | 1,000 grams* | ASTM 3654 |
| Static Shear Strength @ 150°F | 500 grams* | ASTM 3654 |
| Static Shear Strength @ 200°F | 500 grams* | ASTM 3654 |
*Weight that 1/2 square inch will hold 10,000 minutes (7 days).
Thermal Properties
| Property | Value | Test Method |
| Minimum Temperature Resistance | -40°F | — |
| Short-Term Temperature Resistance | 320°F | — |
| Long-Term Temperature Resistance | 212°F | — |
| Recommended Application Temperature | Minimum 59°F | — |
Environmental Performance
| Property | Value | Test Method |
| Solvent Resistance | Excellent | — |
| UV Resistance | Excellent | — |
| Water Resistance | Excellent | — |
Shelf Life / Storage
| Property | Value | Test Method |
| Shelf Life | 18 months | — |
| Recommended Storage Conditions | Store in its original package and in a dry place between 39.2°F and 100.4°F | — |
- Structural bonding of high and medium surface energy plastic components — particularly PVC and ABS — where a thicker bond line is required
- Attachment of glass elements to metal or composite frames in architectural or display assemblies
- Bonding of aluminum and steel substrates where differential thermal expansion between dissimilar materials must be accommodated
- Replacement of mechanical fasteners — including rivets, screws, spot welds, and liquid adhesives — in fabricated assemblies
- Adhesive mounting to ceramic surfaces in industrial or consumer product applications where greater gap-filling is needed
Common industries: general manufacturing, glazing and fenestration, signage and display, transportation, consumer products.
AFTC 5391 is a general purpose double sided acrylic foam tape constructed with a conformable closed cell acrylic foam core coated on both sides with Acrylic Coating 40 permanent adhesive. Available at 0.090″ thickness in Gray, it is engineered for structural bonding of high and medium surface energy substrates — particularly PVC and ABS — and accommodates differential thermal expansion between dissimilar materials.
The tape delivers very high initial tack and is suited to assemblies where the bond line must absorb movement or stress between joined components.
The tape demonstrates excellent resistance to solvents, UV exposure, and water, and maintains high impact resistance at sub-zero temperatures. No bi-metal corrosion is noted as a product benefit. As a pressure sensitive adhesive, a minimum bond line pressure of 14.5 psi applied by hand roller or mechanical presser is required for full adhesion.
For low surface energy substrates — including certain polymers, powder coated metals, and porous materials — primer use is recommended; without primer the AFTC line requires up to 72 hours to reach end-strength, while a compatible primer reduces this to approximately 20 minutes. Shelf life is 18 months when stored in original packaging in a dry environment between 39.2°F and 100.4°F.
What differentiates AFTC 5391 from thinner grades such as AFTC 5390?
AFTC 5391 is 0.090" thick — approximately 15% thicker than the 0.078" grades — providing greater gap-filling capability and increased compliance for bond lines with surface irregularities. It uses a conformable acrylic foam core (rather than the standard acrylic adhesive foam core), and explicitly rates water resistance and no bi-metal corrosion as product benefits. It is available in Gray with a Red PE liner.
Why is peel adhesion important when selecting an acrylic foam tape?
Peel adhesion — measured here at 23 lb/in per ASTM D3330 — determines how effectively the tape resists being peeled or lifted from a bonded substrate under service loading. For assemblies subject to vibration, thermal cycling, or environmental exposure, adequate peel adhesion ensures the bond line remains intact throughout the intended service life of the joint.
What is the operating temperature range for AFTC 5391?
AFTC 5391 has a minimum temperature resistance of -40°F, a long-term temperature resistance of 212°F, and a short-term temperature resistance of 320°F.
Is AFTC 5391 suitable for outdoor or environmentally exposed environments?
The TDS rates AFTC 5391 as having excellent UV resistance, excellent solvent resistance, and excellent water resistance, and notes that it maintains high impact resistance below 0°C. No specific regulatory compliance standards are listed on the TDS.
How should AFTC 5391 be specified?
Specify grade (AFTC 5391), thickness (0.090"), color (Gray), liner type (Red PE), dimensional tolerances, and finished format. Note any primer requirements for low surface energy substrates and confirm minimum application temperature of 59°F can be met at time of bonding.
