1. Aluminum cans: Aluminum cans are currently the most widely used canned beverage material, especially in carbonated beverages. It has the advantages of good sealing, light weight, and easy recycling. The manufacturing process of aluminum cans usually includes deep drawing, inner coating treatment to prevent aluminum from contacting beverages, and external printing and sealing. Aluminum cans can effectively prevent food from spoiling and maintain the freshness and taste of food for a long time.
2. Iron cans: Iron cans are also used in canned beverages, especially in non-carbonated beverages. It has good sealing and heat preservation properties, but the disadvantages are heavy weight, high transportation costs, and possible environmental pollution.
3. Steel cans: Steel cans (mostly stainless steel) have good pressure resistance and corrosion resistance, but they also have the problems of heavy weight and environmental pollution. Its surface is polished and beautiful in appearance.
4. Plastic cans: Plastic cans are a lightweight, easy to carry, low-cost packaging material with the characteristics of leakproofness and corrosion resistance. However, its sealing is relatively poor and it is easily affected by temperature and humidity, resulting in deformation and leakage, so the quality and safety of canned beverages may not be as good as cans of other materials.
5. FRP tanks: FRP tanks are made of glass fiber reinforced plastic, which has good corrosion resistance and dimensional stability, and is relatively light, easy to install and maintain. But its strength and heat resistance are relatively low.
6. Polyethylene tanks: Polyethylene tanks are economical and practical, with good chemical corrosion resistance and dimensional stability. But it cannot withstand excessive temperature and pressure, and is susceptible to ultraviolet rays and aging.
Advantages:
1. Good corrosion resistance: It can prevent beverages from being corroded during storage and transportation, and maintain the quality of beverages.
2. Light weight and low cost: Aluminum cans are relatively light, easy to transport and store, and low cost, which is conducive to improving work efficiency.
3. Good sealing: It can ensure the safety of beverages during storage and transportation, and avoid leakage and contamination.
Disadvantages:
1. Performance degradation in strong acid and alkali environments: Aluminum may be corroded in extreme environments, affecting the integrity of the tank and the safety of beverages.
2. Relatively short service life: It needs to be replaced frequently, which increases maintenance costs.
3. The surface is easily damaged: The surface of the aluminum can is easily scratched and hit, affecting the appearance.
Iron cans
Advantages:
1. Good moisture-proof performance: It can effectively protect the internal beverage from moisture and keep the beverage dry.
2. Low cost and simple production process: It can be mass-produced to meet market demand.
Disadvantages:
1. Heavy weight: It is not conducive to transportation and storage, and increases logistics costs.
2. Easy to rust and mold: It may contaminate beverages and affect quality and safety.
Plastic cans
Advantages:
1. Light weight and low cost: Plastic cans have low material density, light weight, and are easy to carry and transport; and the material cost and manufacturing cost are low.
2. Can reliably protect products: Plastic cans have good chemical stability and good barrier properties, which can protect the beverages inside.
3. Good shelf effect: The surface of plastic cans is easy to print and decorate to attract customers.
Disadvantages:
1. Unstable sealing quality: The sealing performance of the bottom cover and the can body may not be stable enough, affecting the shelf life of the beverage.
2. The strength is sometimes not high enough: When vacuum or pressure packaging is performed, the can body strength may not meet the requirements.
FRP tanks and polyethylene tanks
These two types of tanks are rarely used in beverage canning and are mainly used for large liquid storage. Here are their advantages and disadvantages:
FRP tanks:
Advantages: good corrosion resistance, high strength, beautiful appearance, low price, and recyclable.
Disadvantages: not resistant to high temperatures and fragile.
Polyethylene tanks:
Advantages: no welding, no leakage, light weight, impact resistance, long life; good chemical resistance; low price and high performance ratio.
Disadvantages: weak pressure resistance, only suitable for normal pressure environment; weak corrosion resistance in strong oxidizing environment.
