What is foil made of, how is it made, materials

Foil is a popular material that is used not only in the culinary and food industries. It is used in construction, medicine and other industries. It is a plastic alloy of metals that is not prone to oxidation under various conditions. I wonder what components are used in production.

What is foil made of

The material has only a technical purpose and may include alloys of various metals. In cooking only aluminum is used foilsafe for the body.

Knowing the structure, a person will be able to imagine in more detail the properties of the coating.

Composition and specifications

There are several types of food grade shiny paper on sale. The label is always labeled, for example:

• A5;
• A0;
• АЖ1;
• 1145 and others.

They indicate the amount and characteristics of impurities that make up the product.

The maximum includes no more than 0.5-1% of the total number of ingredients.

The additives included in the production affect the technical characteristics of the product. In particular, they strengthen the material or, conversely, reduce its ductility. This is important when rolling. Inertia also falls: it ceases to be neutral when interacting with aggressive substances.

Regulations

The quality of the foil is determined in accordance with GOST 745-2014. This law regulates the integrity and storage conditions of the goods, in accordance with which it provides technical characteristics.

What to look for when choosing:

1. The foil is provided to the buyer tightly wound on a dense cardboard base, in a roll.
2. The document defines the nature of the tension. The winding should be even, without pieces protruding beyond the base and protruding turns.
3. Dents, cracks, scratches and cuts are not acceptable.
4. The dimensions and tolerances for them correspond to the documentation, as well as the markings established by law.
5. Harsh, extraneous odors are unacceptable.
6. Color suggests uniformity. Smudges or rust marks indicate a manufacturing problem.
7. There are no problems during unwinding, the paper does not tear and remains intact.
8. Mandatory sealed packaging, which prevents damage and contamination during transportation and storage of goods.

GOST allows single holes in aluminum sheets with a thickness of 0.03 mm. This is not considered a marriage.

Manufacturing methods

Foil for food and candy is produced by cold drawing. Aluminum sheets are passed between large shafts, the distances between them are gradually narrowed. In this way, it is possible to achieve uniformity and flawless thinness of the sheets.

To add decorative appeal, the foil is decorated with:

• imprint;
• adding color;
• drawings;
• lamination.

This feature is good for product advertising.

Foil classification

This is a versatile material that is used in different industries. Their types differ in characteristics and impurities that determine the scope of use.

1. 1. Aluminum. Such packaging is prescribed for food products, chocolate, sweets, used in cooking and in the production of insulation materials for heat accumulation.

1. 1. Gold. This foil is called leaf. It is made to be attractive. It is used in writing, as a food coloring and for decorative design of building facades.

1. Silver. It is widely used in medicine and cosmetology. Also suitable for the production of plastic windows and in the printing industry.
2. Copper, platinum, or lead. For technical needs only.
3. Tin. They are used in the production of mirror surfaces.
4. Steel. Use in construction and food industry.

When choosing a material, be sure to study its composition and inspect the markings on the label.

Foil benefits

The material perfectly preserves the properties of products, and is suitable for cooking in ovens. Some types can even be used in microwave ovens for heating and cooking.

The food remains juicy, retains most of the beneficial properties and meets the requirements of a healthy diet. But you should not put food in the refrigerator in shiny paper. Some of them are capable of oxidizing and promoting the release of harmful substances.