Customized film aluminum foil mylar food packaging pouches bags household aluminium foil
Aluminium foil has a shiny side and a matte side. The shiny side is produced when the aluminium is rolled during the final pass. It is difficult to produce rollers with a gap fine enough to cope with the foil gauge, therefore, for the final pass, two sheets are rolled at the same time, doubling the thickness of the gauge at entry to the rollers. When the sheets are later separated, the inside surface is dull, and the outside surface is shiny. This difference in the finish has led to the perception that favouring a side has an effect when cooking. While many believe (wrongly) that the different properties keep heat out when wrapped with the shiny finish facing out, and keep heat in with the shiny finish facing inwards, the actual difference is imperceptible without instrumentation. Increased reflectivity decreases both absorption and emission of radiation. Foil may have a non-stick coating on only one side. The reflectivity of bright aluminium foil is 88% while dull embossed foil is about 80%.
Alloy-temper | 8011-O |
Thickness | 0.008mm(8micron) - 0.04mm (40micron) (tolerance:±5%) |
Width and tolerance | 120- 1500 mm (tolerance:± 1.0mm) |
Weight | 80 - 250kg per roll coil (or customized) |
Surface | one side matte, one side bright |
Surface quality | 1. Free of black spot, line mark, creases, wrinkles, etc... |
2. Rell: no air packet, no bumps, etc | |
Core material | Steel / aluminum / paper |
Core ID | 76mm, 152mm (±0.5mm) |
Packaging | Fumigation free wooden cases(keep us informed if any special requests) |
Tensile Strength(Mpa) | 45-110MPa (according to thickness) |
Elongation % | ≥1% |
Wettability | A grade |
Surface wetting tension | ≥32dyne |
Application | used in cooking, freezing, baking, and other food packaging |