Butter And Margarine Foil

The butter and margarine foil is a kind of composite material used for making wrappers for butter and margarine. The margarine foil is food grade, so that is can contact with the packed margarine directly.

Butter and margarine foil is often made in a multi-layer composite structure, which usually consists of several layers of different materials to provide a variety of functions. Common structures include:

Outer layer: this is usually a printed or protective layer used to enhance the aesthetics and durability of the foil.

Aluminium foil layer: this is the main functional layer, providing barrier, puncture resistance and thermal conductivity.

Inner layer: usually food grade plastic or paper, used for direct contact with butter to ensure food safety.

The thickness of butter and margarine foil varies depending on the specific application and manufacturer. The thickness of aluminium foil is usually measured in millimetres or microns, with common foil thicknesses ranging from 0.006 to 0.2mm. For food packaging, especially butter and margarine packaging, the thickness of the aluminium foil may be selected to suit specific needs.

The advantages of aluminium foil for butter packaging are mainly in the following areas:

Barrier property:

Aluminium foil has excellent barrier property to water, air (oxygen), light and microorganisms, which can protect butter from pollution and oxidation of external environment and prolong the shelf life of butter.

Mechanical properties:

Aluminium foil has strong mechanical properties, high burst resistance, strong puncture and tear resistance, which can ensure that the package is not easy to break during transportation and storage.

High and low temperature resistance:

Aluminium foil can withstand higher and lower temperatures, so it can be placed in the oven with butter, refrigerated or frozen without affecting the performance of the package.

Food safety:

Aluminium foil meets the hygiene standards for food packaging, is non-toxic and odourless, and will not react chemically with butter, ensuring food safety.

Easy to process:

Aluminium has a low melting point, good heat sealability and is extremely easy to form, so it can be processed into different shapes and sizes of packages as needed.

Thermal Conductivity:

Aluminium is an excellent thermal conductor, transferring heat quickly and evenly, facilitating uniform heating or cooling of butter.

Environmental sustainability:

Aluminium is one of the most abundant metal elements in the earth’s crust, with a wide range of sources, and aluminium foil packaging can be recovered and recycled to reduce environmental pollution.

To sum up, butter and margarine foil has been widely used in the field of butter packaging due to its excellent barrier properties, mechanical properties, high and low temperature resistance, food safety, ease of processing, thermal conductivity and environmental sustainability.