Categories

Thickness

Aluminum foil can be categorized into thick foil, single zero foil, and double zero foil based on thickness differences.

Thick Foil: Foil with a thickness of 0.1 to 0.2 mm.

② Single Zero Foil: Foil with thickness of 0.01mm and less than 0.1mm.

③ Double Zero Foil: Double zero foil refers to foil with a thickness of two zeros after the decimal point when measured in millimeters, typically aluminum foil with a thickness less than 0.01mm, ranging from 0.005mm to 0.009mm.

Shape

Aluminum foil can be categorized into rolled foil and sheet foil. Most deep-processed aluminum foil materials are supplied in rolled form, while sheet foil is only used in a few handcrafted packaging scenarios.

Aluminum foil can be categorized into hard foil, semi-hard foil, and soft foil based on its condition.

Hard foil: Aluminum foil that has not been softened (annealed) after rolling and has residual oil on the surface when not de-greased. Therefore, hard foil must be de-greased before printing, lamination, or coating. If used for forming, it can be used directly.

② Semi-hard foil: Aluminum foil with hardness (or strength) between that of hard foil and soft foil, commonly used for forming processing.

③ Soft Foil: Aluminum foil that becomes soft after sufficient annealing, with a soft texture and no residual oil on the surface. Soft foil is used in most applications, such as packaging, lamination, and electrical materials.

Features

Aluminum foil boasts a clean, hygienic, and shiny appearance. It can be integrated with many other packaging materials. Additionally, the printing on aluminum foil is superior to that of other materials. Moreover, aluminum foil has several other characteristics:

(1) Aluminum foil surface is clean and hygienic; no bacteria or microorganisms can grow on it.

(2) Aluminum foil is a non-toxic packaging material that can be in direct contact with food without posing any health risks to humans.

(3) Aluminum foil is a tasteless and odorless packaging material that does not impart any off-odors to the packaged food.

(4) If the foil itself is non-volatile, neither the foil nor the packaged food it contains will dry out or shrink.

(5) Aluminum foil will not experience oil渗透 under either high or low temperatures.

(6) Aluminum foil is an opaque packaging material, making it an excellent choice for products sensitive to sunlight exposure, such as margarine.

(7) Aluminum foil is highly malleable, making it suitable for packaging a variety of shapes of products. It can also be formed into containers of any desired shape.

(8) Aluminum foil has high hardness and tensile strength, but its tear strength is low, making it prone to tearing.

(9) Aluminum foil itself cannot be heat-sealed; a heat-resistant material, such as PE, must be applied to its surface for heat sealing.