AFTC 8404
AFTC 8404 is a double sided, closed cell acrylic foam tape with a permanent Acrylic Coating 40 adhesive system on both faces, available at 0.09″ thickness. It is designed for bonding high and medium surface energy substrates — including plastics, glass, steel, aluminum, and ceramics — and is specifically recommended for more difficult-to-bond surfaces in modern electronic assembly applications. The tape delivers a 90° peel adhesion of 17 lb/in, a dynamic shear strength of 99 lb/in², and a long-term temperature resistance of 248°F and short-term resistance of 374°F.
Key Properties
- 90° Peel Adhesion: 17 lb/in (ASTM D3330)
- Dynamic Shear Strength: 99 lb/in² (ASTM D1002)
- Tensile Strength: 102 lb/in² (ASTM D897)
- Long-Term Temperature Resistance: 248°F
- Liner / Carrier: Red PE liner; Acrylic Adhesive Foam Core
- Total Tape Thickness: 0.09″ ±15%
We want to help!
Enter your information and we'll get you in touch with our knowledgable staff. We know how important to the right product for your project.
Request a Consultation
- Specifications
- Applications
- General Info
- FAQs
Physical Properties
| Property | Value | Test Method |
| Thickness | 0.09″ ±15% | — |
| Color | Black+ | — |
| Material / Substrate | Coated Acrylic Foam | — |
| Core | Acrylic Adhesive Foam Core | — |
| 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 | — |
+All “Black” tapes have a gray core and black adhesive.
Adhesion Properties
| Property | Value | Test Method |
| 90° Peel Adhesion | 17 lb/in | ASTM D3330 |
| Dynamic Shear Strength | 99 lb/in² | ASTM D1002 |
| Tensile Strength | 102 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 | 374°F | — |
| Long-Term Temperature Resistance | 248°F | — |
| Recommended Application Temperature | Minimum 59°F | — |
Environmental Performance
| Property | Value | Test Method |
| Solvent Resistance | Excellent | — |
| UV 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 | — |
- Bonding of lightweight, thin, and small high and medium surface energy plastic molded components in modern electronic assembly applications with difficult-to-bond surfaces
- Adhesive mounting of glass or ceramic components in assemblies subject to elevated operating temperatures up to 248°F long-term
- Structural bonding of aluminum or steel components where high dynamic shear strength (99 lb/in²) and elevated temperature resistance are required
- Low-profile adhesive attachment of lightweight parts in applications requiring a black, virtually invisible bond line
- Bonding of molded plastic parts on high and medium energy surfaces in consumer electronics and related applications requiring UV and aging resistance
Common industries: electronics, consumer products, automotive, general manufacturing.
AFTC 8404 is a high-temperature double sided acrylic foam tape from the 84 series, constructed with an acrylic adhesive foam core coated on both sides with Acrylic Coating 40. Like all 84-series grades, it is characterized by its significantly elevated temperature resistance — with a long-term rating of 248°F and short-term rating of 374°F — and its high shear strength values suitable for lightweight, thin, and small molded parts.
AFTC 8404 is specifically noted as recommended for more difficult-to-bond surfaces, as used in today’s modern electronic assembly industry. It is the Black+ option in the 84 series, and shares the same thickness and temperature ratings as AFTC 8403 but delivers slightly lower dynamic shear (99 lb/in² vs. 105 lb/in²) and tensile strength (102 lb/in² vs. 105 lb/in²). Note: all “Black+” tapes have a gray core and black adhesive.
The tape demonstrates excellent resistance to solvents and UV exposure. 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, primer use is recommended; the AFTC line requires up to 72 hours to reach end-strength without primer, which is reduced to approximately 20 minutes with a compatible primer. 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 8404 from AFTC 8403, which shares the same thickness and temperature ratings?
AFTC 8404 and AFTC 8403 share the same 0.09" ±15% thickness, Acrylic Coating 40 adhesive, temperature ratings (248°F long-term / 374°F short-term), peel adhesion (17 lb/in), and static shear values. AFTC 8404 is Black+ (gray core, black adhesive) versus White for AFTC 8403, and is specifically noted as recommended for more difficult-to-bond surfaces in electronic assembly. Its dynamic shear (99 lb/in²) and tensile strength (102 lb/in²) are slightly lower than AFTC 8403's 105 lb/in² on both metrics.
Why is peel adhesion important when selecting an acrylic foam tape?
Peel adhesion — measured here at 17 lb/in per ASTM D3330 — determines how effectively the tape resists being peeled or lifted from a bonded substrate under service loading. For the 84-series applications involving thin, lightweight molded parts and electronic assemblies with difficult-to-bond surfaces, the high dynamic shear strength (99 lb/in²) is typically the dominant performance parameter; peel behavior must still be considered in any design where lifting or peeling forces may act on the bond line.
What is the operating temperature range for AFTC 8404?
AFTC 8404 has a minimum temperature resistance of -40°F, a long-term temperature resistance of 248°F, and a short-term temperature resistance of 374°F. The TDS describes its high-temperature resistance range as +100°C to +160°C (212°F to 320°F).
Is AFTC 8404 suitable for outdoor or UV-exposed environments?
The TDS rates AFTC 8404 as having excellent UV resistance and excellent solvent resistance, and lists excellent UV, aging, solvent, and high-temperature resistance as a product feature. No specific regulatory compliance standards are listed on the TDS.
How should AFTC 8404 be specified?
Specify grade (AFTC 8404), thickness (0.09"), color (Black+), liner type (Red PE), dimensional tolerances, and finished format. Confirm substrate type, surface energy level, and surface preparation requirements for difficult-to-bond substrates. Confirm minimum application temperature of 59°F can be met at time of bonding.
