Mechanical properties of metal container

Metal containers offer the advantage of sufficient strength and robustness to permit easy handling, filling and processing, storage and distribution and without damage. Metal containers also impermeability to mass transfer and to light, good thermal conductivity and resistance to relatively high temperature.

The main metals used in packaging are mild steel sheet, tinplate, terne plate, galvanized mild steel sheet, stainless steel, aluminum alloys and aluminium.

Axial strength
Resistance to buckling of can from top load. Axial strength is independent of the gauge of sheet metal and temper within the range of loads that would be normally applied.

Panelling resistance
Resistance to paneling is a function of gauge and strength of the side wall. It is resistance of the panel to external pressure and/or in-can vacuum. Panelling resistance is a function of sheet metal gauge and strength of side wall.

Peaking resistance
It is the resistance to internal pressure during the processing cycle. When the content is filled in the container, the gas in head space expands generating increasing pressure in can.
Mechanical properties of metal container

The advantages of metal containers

Metal packages are widely used in food and beverage market segment because of cost effectiveness, durability and protection of the content.

Metal packing provides adequate protection for food and cosmetic products. When used for the packaging of food, metal is often in competition not only with other materials but also with other preservation processes and systems, such as aseptically filled cartons, freezing and so on.

Some advantages of metal packaging are:
*Good mechanical strength and relatively unbreakable

*Offer the best hermetic sealing

*Better barrier properties. They are impervious to moisture vapor, gases, odors and bacteria.

*They have good thermal conductivity and resistance to relatively high temperature. Ability to withstand high food processing and filling temperature

*Provide ideal surface for decoration

*Metal packaging is highly recyclable, in both physical and economic terms

Metal containers are available in a variety of shapes sizes and styles ranging from small from elongated collapsible tubes and shallow drawn containers to large built-up containers including steel drums of up to 110 gallon capacity.
The advantages of metal containers

Metal container for food and beverage

The metal food can dates from Napoleonic wars, when French industrialist Nicolas Appert invented a food-preserving technique using metal containers sterilized at high temperature.

A metal container may range from simply a means of distributing a product to a vehicle with a very precise marketing and technical purpose.

Metal cans are now used extensively in both the food and the beverages industries where they compete with containers made of glass, plastic, cardboard or composites. Metal containers are widely used in food and beverage market segment because of cost effectiveness durability and protection of the content.

The packaging forms of metal containers are including: three piece cans, bottle closure, two-piece can, food trays, metal drum, and metal foils.

Three-piece tinplate containers were used for many years for the packaging of carbonated beverages.

The highly corrosive nature of carbonated soft drinks demanded complete protection of the metal container from the product by the use of one or more coating of an impermeable enamel system.

In the case of processed foods, it must ensure a safe pack, which will be no risk to public health, and be sufficiently strong to maintain its integrity. Metal cans for food must be resistant enough to compensate for the loss of internal pressure resulting from high-temperature sterilization.
Metal container for food and beverage