Knowde Enhanced TDS
Identification & Functionality
- Backing Material Type
- Chemical Family
- Product Type
- Core
- Closed Cell Acrylic
- Adhesive
- Closed Cell Acrylic
- Technologies
Features & Benefits
- Ready-to-Use Product Features
- Product Highlights
Because of the high density, this tape offers, when used on the right high surface energy substrates, the strongest available bond. This acrylic foam tape has a very high temperature resistance. In combination with a primer this SilverTape family guarantees excellent adhesion performance even on medium and low surface energy substrates.
Applications & Uses
- Markets
- Compatible Substrates & Surfaces
- Suitable for
Glass, glass/epoxy, stainless steel, galvanized steel, anodized steel, coated alurninum.
- Process Recommendations
Tape bonding is one of the most variable and easy technology mating substrates. Especially for assemblies made of different substrates having different thermal expansion rates bonding is a easy method for a long term durable joint. AFTC® tape allow a high variation in such substrates as all are available in different thickness. To ensure proper performance of such bonded part follow the following recommendations.
Design:
A proper tape bond design means avoiding cleavage and peel forces. Design leading to pure shear and tensile loads have to be preferred to utilize full AFTC® Silvertape™ performance.Surface Preparation:
All bonding process require proper surface preparation / cleaning. This will enable AFTC® SilverTapes™ to get in direct contact with the surface creating full adhesion force. AFTC® SilverClean Dirt & Dust will remove most (polar) contaminations such as fingerprints and light oil. AFTC® SilverClean Oil & Grease is used for more non-polar contaminations as grease or mold release agents. Check suitable cleaner with surface test inks. Use lint free tissues for such operations.
Surface Modification:
If simple cleaning cannot achieve appropriate adhesion forces the following surface modifications can be used. For larger scale process operations the use of e.g. flame activation can be used. On smaller scale / repair operations the use of AFTC® SilverPrime or AFTC® SilverActivate might be a solution. AFTC® SilverPrime 101(UV) is used for plastics or similar coatings which have a low surface energy (PE, PP}. For glass AFTC® SilverPrime 201 is used when exposed to humid environments. AFTC® SilverActivate 301 is a “one step clean and prime" solution used for a variety of car paints. All primer / activators should only be used on the area for bonding. Excess material has to be cleaned immediately. For mill finished aluminum or stainless steel mild abrasion using AFTC® SilverPads followed by cleaning using AFTC® SilverClean Dirt & Dust is an option.
Temperature:
After proper surface preparation / modification AFTC® SilverTapes™ should be applied at a temperature level above 18°C (65°F). For temperatures below this but above 0°C (32°F) use AFTC® low temperature SilverTapes™.
Pressure:
Ensure immediate part assembly after liner removal. Pressure should be applied in rolling fashion at approx. 10N/cm^2. Recommended roller speed at 10 mm/s (24 in./min.). Higher velocities might require higher pressure or control with surface pressure films. AFTC® SilverTapes™ achieve their full strength after 24h at ambient temperature. Higher temperatures can accelerate strength development.
Properties
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Thickness | 0.4 | mm | — |
| Density | 880 | kg/m³ | — |
| Temperature Resistance | min. -40 | °C | — |
| Temperature Resistance (Short term) | 190 | °C | — |
| Temperature Resistance (Long term) | 120 | °C | — |
| 90° Peel Adhesion | 30 | N/100mm | ASTM D3330 |
| Dynamic Shear Strength | 580 | kPa | ASTM D-1002 |
| Normal Tensile | 770 | kPa | ASTM D-897 |
| Static Shear Strength (72°F) | 1000 | g/312mm² | ASTM 3654 |
| Static Shear Strength (150°F) | 500 | g/312mm² | ASTM 3654 |
| Static Shear Strength (200°F) | 500 | g/312mm² | ASTM 3654 |
Packaging & Availability
- Packaging Type
- Available Sizes
- Jumbo: 900mm x 330 m (76,2mm core)
- Log: 900mm x 33/66 m (76,2mm core)
- Slit roll: 4 - 250mm x 33/66 m (76,2mm core)
- Spool roll: 5 - 25mm x max 1200 m (152,4mm core)
Storage & Handling
- Storage & Shelf Life
Store AFTC® SilverTapes™ between 5° and 35°C (40°-95°F). Humid condition causing condensation should be avoided. For products with non-siliconized liners shelf life is 24 months; products with siliconized liners and AFTC splicee-/tabbing tapes shelf life is at 12 months.