Pros and cons of tin box containers

  Metal tin packaging materials have the advantages of environmental protection, recycling, and cost savings. With the increasing demand for environmental protection of packaging materials in the international market, metal packaging materials are the preferred packaging materials. In addition to environmental protection, metal tin packaging materials have another feature That is, you can quickly pass the commodity inspection gate to achieve the purpose of rapid logistics cost savings. Now let's understand the advantages of metal tin packaging materials and the performance of packaging materials used as food packaging.

　　 Advantages of metal tin packaging materials:

　　Due to the above characteristics of metal tin packaging materials, the amount of metal tin packaging materials is increasing. The reason why metal tin packaging materials occupies the top position in the packaging field, in addition to the above characteristics, also has the following unique advantages:

　　 1. Wide source of raw materials, mature production process, variety, easy to mass production;

　　 2. Good processing performance and excellent printing performance;

　　 3. It has a certain extension performance, is easy to stamp and form, has a high box hardness, compression resistance, high temperature resistance, and fast cooling;

　　 Fourth, good health and safety;

　　 Fifth, the waste can be recycled. The main raw material tinplate in tin cans is actually environmentally harmless and can be naturally decomposed and friendly to the environment.

　　 Performance of metal tin packaging materials:

As a modern packaging material, metal tin is mainly used for making coffee cans, beverage cans, food boxes, beer containers and other packaging products, of which tin plate packaging materials and products dominate; processing tin boxes have been widely used and will be partially replaced The application of plastic packaging materials in food packaging to solve the environmental protection problems caused by plastic packaging.

　　 Metal packaging materials used as food packaging, its performance is mainly reflected in the following aspects.

　　 1. Good printing performance

　　Tin plate has strong ability to absorb and bond ink, good printing performance, printing process has cmyk and spot color printing. Therefore, it is often used as a printing surface on packaging, and the printing performance is mainly determined by the surface smoothness, sizing, elasticity and adhesion.

　　 2. Hygiene and safety performance

　　In the process of tin box, it is usually coated with a layer of varnish. It is a transparent and non-toxic oil with no color. It is transparent and bright. The full version of the coating machine is coated with varnish. After 175 degrees high temperature baking, it is safe and hygienic.

　　 3. Barrier performance

　　 Tinned iron material has good impermeability to moisture, gas, light, grease, etc., and its barrier is also very good. Single packaging materials can also be used to package foods with high moisture, fat content and high barrier requirements, and can be properly surface processed to meet their barrier performance requirements.

　　 Fourth, mechanical properties

Tinned iron has certain strength, stiffness and mechanical adaptability, its strength is mainly determined by the material, quality, thickness, processing technology, surface condition and certain temperature and humidity conditions of tinned iron; in addition, it also has certain Foldability, flexibility, etc., suitable for making molded packaging containers. The environmental temperature and humidity have a great influence on the tin box. The change of the air temperature and humidity will cause the tin box to rust; the thickness of the balance coating changes, and eventually its mechanical properties change to varying degrees.

　　 Fifth, processing performance

　　Tinned iron plate has good processing performance, can be folded, and can adopt a variety of sealing methods, easy to process into packaging containers with various properties, easy to achieve mechanized processing operations, a mature production process has been established a few days ago. Good processing performance has created conditions for designing various functional structures (such as window openings, handles, partitions and design display stands, etc.). In addition, through proper surface treatment, tinplate can be provided with the necessary moisture resistance, sealability, barrier properties, heat sealability, strength and physical properties, etc., to expand its scope of use.

　　 Disadvantages of tin box packaging:

　　 1. Easy to be scratched and easy to rust.

　　 2. Weight: Tin products are heavier than cartons and plastic boxes.

　　 3. Price: The raw material price of tin box and tin box manufacturing cost are high.