Can Making Machine

Definition

Tinplate, also known as tin-plated iron, is the common name for electro-tinned sheet steel. The English abbreviation is SPTE, which refers to cold-rolled low-carbon sheet or steel strip coated with commercial pure tin on both sides. Tin mainly plays a role in preventing corrosion and rust. It combines the strength and formability of steel with the corrosion resistance, solderability and beautiful appearance of tin in a single material. It has the characteristics of corrosion resistance, non-toxicity, high strength and good ductility.

Development

Tinplate packaging has a wide coverage in the packaging container industry due to its good airtightness, preservability, light resistance, robustness and unique metal decoration charm, and it is a universal packaging variety in the world. With the continuous enrichment of various CC materials, DR materials, and chrome-plated iron of tinplate, the development of packaging products and technology has been promoted, and tinplate packaging is full of innovations.

Because of its strong oxidation resistance, diverse styles, and exquisite printing, tinplate packaging containers are popular among customers and are widely used in food packaging, pharmaceutical packaging, daily necessities packaging, instrument packaging, industrial packaging, etc.

Many advantages of tinplate packaging containers, such as high strength, good formability, and strong product compatibility, have established a good reputation in the international market. Therefore, all countries generally attach importance to this kind of packaging container, which is the largest metal packaging sheet in the world.

According to the different requirements of the packaging industry, the thickness of the tinplate material, the amount of tin plating, and the mechanical properties have different needs. Since its inception, tinplate has been developing in the direction of thinning. One is to use less tin, or even not to use tin, and the other is to reduce the thickness of the tinplate substrate. Its purpose is to adapt to changes in canning products and reduce the cost of canning.

With the continuous improvement and perfection of tinplate printing technology and processing technology, tinplate packaging has become more and more widely used. At present, the production capacity of domestically produced tinplate continues to increase, and the import of tinplate will gradually decrease. Except for some high-end products, a small amount of imports has been basically self-sufficient. The demand of my country's packaging industry puts forward higher requirements on the quantity and quality of metal packaging. In 2010, my country's metal packaging container sales revenue exceeded 50 billion yuan, which also brought metal packaging into a new growth opportunity period. The sustained and rapid development of the food industry has brought broad market development space for the tinplate packaging container industry.

Features and Advantages

Opacity

In addition to the deteriorating reaction of food, light can also cause changes in protein and amino acids. Vitamin C is more likely to interact with other food ingredients when exposed to light, resulting in a large amount of loss. According to research and analysis, the loss of vitamin C in transparent glass bottled milk is 14 times higher than that of dark bottled milk. Light will also cause milk to produce oxidative odor, and the nuclides, methionine, etc. will be cracked to lose nutritional value. The opacity of tinplate makes the preservation rate of vitamin C the highest.

Good Tightness

The barrier properties of packaging containers to air and other volatile gases are very important for the preservation of nutrients and sensory quality. Comparison of various juice packaging containers proves that the oxygen transmission rate of the container directly affects the browning of juice and the preservation of vitamin C; metal cans, glass bottles, aluminum foil laminates, and cartons with low oxygen transmission rate can preserve vitamin C It is better, and among them, the iron can is the best.

Tin Reduction

The tin on the inner wall of the tinplate interacts with the oxygen remaining in the container during filling, reducing the chance of food ingredients being oxidized. The reduction effect of tin has a good preservation effect on the flavor and color of light-colored fruits and juices. Therefore, juice cans packed in unpainted iron cans have better nutrition preservation than juice cans packed with other packaging materials, and the brown change is slight. The flavour quality is better accepted, and the shelf life is thus prolonged.

Use

Tinplate has a wide range of applications, from packaging materials for food and beverages to grease cans, chemical cans and other miscellaneous cans. The advantages and characteristics of tinplate provide good protection of the contents in terms of physical and chemical properties.

Canned Foods

Tinplate can ensure food hygiene, minimize the possibility of corruption, effectively prevent health risks, and also meet the needs of modern people for convenient and fast food. It is tea packaging, coffee packaging, health care packaging, and candy packaging, cigarette packaging, gift packaging and other food packaging containers are preferred.

Beverage Cans

Tinplate cans can be used to fill juice, coffee, tea and sports drinks, and can also be filled with beverages such as cola, soda, and beer. The high degree of workability of tinplate cans makes the can types vary widely, whether tall, short, large, small, square, or round, which can meet the diversified needs and consumer preferences of today's beverage packaging.

Grease Cans

Light can trigger and accelerate the oxidation reaction of oils, reduce the nutritional value, and may also produce harmful substances. What is more serious is the destruction of oily vitamins, especially vitamin D and vitamin A.

The oxygen in the air promotes the oxidation of food oils, reduces protein biomass, and destroys vitamins. The opacity of tinplate and the insulating effect of air-sealing are the best choice for packaging oily foods.

Chemical Cans

The tinplate is strong, protective, non-deformable, shock-resistant, and fire-resistant. It is the best packaging material for chemicals.

Spray Cans

Tinplate cans that can withstand high temperature and high pressure, especially suitable for spray cans filled with high pressure.

Miscellaneous Cans

The changeable shape of the jar and the beautifully printed biscuit barrels, stationery boxes and milk powder cans are all tinplate products.