3M aluminum foils are characterized by high temperature and weather resistance. The material’s low recovery force allows for adhesion even on shaped parts. The modified acrylic adhesive of the 300 series enables good adhesion even on difficult and low-energy substrates such as polyethylene and polypropylene. These foils can be easily labeled with a typewriter or automatic labeling machine.
| Product | Color | Foil thickness in mm | Adhesive thickness in mm | Release liner in mm (g/m²) | Release liner |
|---|---|---|---|---|---|
| 7800 | silver matt | 0,05 | 0,04 | 0,089 (106) | Siliconized and densified paper for web printing |
| 7940 | silver matt | 0,05 | 0,04 | 0,170 (145) | Siliconized and double-sided poly-coated paper for very high climatic stability and flatness during sheet processing |
| Material | vinyl-coated pure aluminum film |
| Temperature Resistance (adhered to aluminum) | -40°C to +180°C |
| Dimensional Stability (tested according to DIN 30646) | no shrinkage |
| Fire Behavior (according to LTV 1500-850) | Self-extinguishing after 15 seconds, does not drip |
| Opacity | Covers high-contrast colors of the substrate well |
| Fungus | fungus-resistant, does not promote fungus growth |
| Substrate corrosion | does not cause corrosion on the bonded substrate |
| Adhesive | Self-adhesive based on acrylic ester, Series 300, suitable for polyethylene and polypropylene |
| Adhesive type (according to DIN 30646) | PNS (permanently adhesive, low-temperature, special adhesive) |
| Minimum bonding temperature | +4°C |
| Elongation at Break, min. | 4% |
| Tensile Strength, min. | 210 N |
| Salt Spray (according to DIN 50021 SS) | 150h / 5% Conc. / +35°C no adverse effect |
| Dielectric Strength (according to VDE 0303, T2) | Minimum value: 10.9 kV/mm Average value: 11.3 kV/mm |
(Elongation at break and tensile strength tested at 23°C after 48h storage in standard climate 23/50, DIN 50014, on tensile testing machines according to DIN 51221 of class 1 according to DIN 51220, film width 25mm)
Based on our current findings, the following functionality and durability can be expected for 3M aluminum foils 7800 and 7940. Generally, not less than the following periods under vertical outdoor weathering, provided the foil has been professionally processed and applied according to 3M recommendations:
| Durability | unprinted: at least 2 years |
| Shelf life | 2 years |
| Recommended Storage Conditions | in cool, sun-protected rooms at room temperature |
| Printing | Screen/Letterpress/Flexo/Offset printing processes A color qualification test before series production is recommended. Note: It is advisable to also test the base print for chemical resistance if required! |
| Thermal Transfer Printing | Not suitable |
| Die-cutting | Sharp knives and minimal web tension are recommended to prevent possible adhesive bleed. |
| Substrate Pretreatment / Bonding | See Processing Information KG-054 |
Please note: The protective cover must be removed from the foil (not the other way around!) to prevent the foil from rolling up or curling, or lifting after application.
| Adhesion Level – T (≥ 25 N) according to DIN 30646 | |
|---|---|
| Bare Aluminum | 34 |
| Anodized Aluminum | 35 |
| Steel | 39 |
| Polyethylene | 24 |
| Polystyrene | 32 |
| Acrylic Resin-Based Coating | 36 |
Measured after 48 h storage in standard climate 23/50, DIN 50014, on a tensile testing machine DIN 51221 of class 1 according to DIN 51220. Film width 25mm.
The adhesive strength values given are average values. They are not suitable for specifications.
Resistance to climatic stress
SFW 2.0 S DIN 50018
Stress 2 cycles: no change
Film adhered to stainless steel, tested after 72 h storage in standard climate 23/50, DIN 50014.
Resistance to Chemicals and Solvents
| Loading agent | Loading time | Result |
|---|---|---|
| Distilled water at +32°C | 150 h | no adverse effect |
| 100% relative humidity at +38°C | 168 h | no adverse effect |
| Transformer oil at +23°C | 24 h | no adverse effect |
| Diesel oil at +23°C | 24 h | no adverse effect |
| Engine oil 30 W at +23°C | 24 h | no adverse effect |
| Test gasoline at +23°C | 24 h | no adverse effect |
| n-Heptane at +23°C | 24 h | no adverse effect |
| Antifreeze at +23°C (1:1 ethylene glycol and water) | 24 h | no adverse effect |
| Washing solution at +65°C (Conc. according to manufacturer’s specifications) | 4 h | no adverse effect |
| Cold cleaner at +23°C (P3 cid mixed with 1:19 water) | 8 h | no adverse effect |
Foil adhered to stainless steel, tested after 72 h storage in standard climate 23/50, DIN 50014.
UL recognized, file number MH 11410 for indoor and outdoor applications.
CSA recognized, file number 99316 for indoor and outdoor applications.
The quality assurance system of the manufacturing plant is certified according to DIN ISO 9002.
Anfrage / Zentrale
Folit GmbH
Im Moldengraben 47
70806 Kornwestheim
Anfrage / Zentrale
Tel: 07154-8225-80
Inquiry / Headquarters
Folit GmbH
Im Moldengraben 47
70806 Kornwestheim
Inquiry / Headquarters
Tel: 07154-8225-80
