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Primary Tinplate

Tinning

Tinning is the process of thinly coating sheets of wrought iron or steel with tin, and the resulting product is known as tinplate.

Tinplate consists of sheets of steel, coated with a thin layer of tin. Before the advent of cheap mild steel the backing metal was iron. While once more widely used, the primary use of tinplate now is the manufacture of tin cans.

Tinplate is made by rolling the steel (or formerly iron) in a rolling mill, removing any scale (rust) by pickling it in acid and then coating it with a thin layer of tin.

Tinplate is light gauge, cold-reduced low-carbon steel sheet or strip, coated on both faces with commercially pure tin. It thus combines in one material the strength and formability of steel and the corrosion resistance, weldability and good appearance with lustre of tin.

Application

Production Process

Advantages Of Tinplate

Application

Tinplate is plated on both sides of the iron sheet, that is, cold rolled low carbon steel sheet, rust, corrosion resistance, non-toxic.Mainly used for making metal packaging, including canned food, beverage, chemical industry, medicine, health, paint, paint, spray, cosmetic bottle caps, etc.

Food cans,beverage cans, milk powder cans，tea pots

DI cans, ring-pull cans

Chemical tanks,aerosol cans

Household electrical appliances,equipment parts

Large tanks,body and cover of Inner- pressure vessels

T-1,T-2,T-2.5 more soft, thicker, used in miscellaneous cans, chemical tanks,irregular can.

T-3,T-3.5,T-4 moderate , thickness is 0.18mm-0.25mm, more used in food cans, milk powder cans, beverage cans, aerosol

T5 hardness is suitable for large tanks,Body and cover of Inner- pressure vessel.

The small, beautifully printed tin resealers are popular for holding dried foods, sweets, biscuits, nuts, pharmaceuticals, tobacco, shoe polish, car wax, vegetable oils and so on.

Paint tin can components, whatever the barrel body, bottom or lid are widely used tinplate material, better play the role of corrosion prevention.

Production Process

Hot colled coil

Acid washing

Acidwashing

Remove the oxide skin and rust on the surface of the original plate and get a clean surface suitable for tin plating.

Cold rolling

It is thinned by pressure to improve the strength, keep the ductility, and save materials of can making.

Degrease

Remove grease and other foreign bodies adhered to the steel plate during cold rolling.

Annealing

Reduce the hardness of steel, eliminate cold working hardening, eliminate residual stress, stabilize the organization.

Trimming

stress-relieving platform, partial improvement of shape, and tin plating surface state with appropriate hardness.

Rectify and level

Tinning

Tin coating on a metal surface to prevent oxidation.

Coil

Horizontal cutting

Sheet

Lab inspection

Waste water treating

The waste water is treated in a unified way after testing and environmental protection standard.

Advantages of tinplate:

Tinplate sealed, the appearance of high-grade and ensure the quality.It mainly displays in the following respects:

Light-proof
Can effectively avoid the loss of nutrients caused by light
Tinplate is not transparent
Tinplate is not transparent, can effectively avoid  the loss of vitamin C and other nutrients caused by direct sunlight.
Good tightness
Slow down the browning caused by oxygen
Good air tightness
Good air tightness, can slow down the browning caused by oxygen permeation.
The reduction of tin
Reacting with the residual oxygen, fresh-keeping better
Can reduce the oxidation of fruit
The tin of the inner wall has the effect of reduction, can reduce the oxidation of fruit, and it's well preserved for fruits, and the taste or color of juices as well.
Good for your health
Supply the iron elements needed for human body
A small amount of irons separate out ferrous ion
A small amount of irons separate out ferrous ion to dissolve in water, which can supplement the iron elements needed for the human body.
Environmental protection
Environmental protection and cost saving: corrosion resistant, nontoxic, high strength and good ductility
Tinplate meets the international environmental standards
In addition, tinplate meets the international environmental standards, recoverable profit , which is one of the reasons that many well-known canned brands adopting tinplate packaging.

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2nd. floor office, Renxin metal, No.629 Hualu road, Huashi town, Jiangyin City, Jiangsu Province,China.

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