JIS G3303 BA T3 2.8/2.8 Tin Coated Coils ETP Tinplate Food Can Empty Cans For Packaging Food

1. Introduction

Tinplate: commonly known as tinplate, has good sealing, preservation, light resistance, robustness, corrosion resistance, non-toxic and has a unique metal decorative charm, is widely used in food packaging industry such as cans, beverages, military, instruments, electrical appliances and other industries. Among them, in the field of packaging, it belongs to the international common packaging varieties. Tin plating is also one of the important consumption areas of tin, accounting for 30% of all consumption (2010 data).

Tin mill products include electrolytic tinplate, and electrolytic chromium coated steel (also referred to as tin free steel or TFS), and Black Plate. Tinplate is a thin steel sheet coated by tin, while TFS is an electrolytic chrome plated steel consisting of a thin layer of chromium and a layer of chromium oxide deposited on the steel base. The coating gives both of them a beautiful, metallic luster as well as excellent properties in corrosion resistance and paintability.

Our food tinplate can offers a good source of iron for its users. Tinplate canned food, except few light color fruit and canned fruit, mainly adopts interior painted empty cans for improved corrosion resistance of containers. Under the electrochemical action of metal, a small quantity of iron dissolves out of enamel cans and exists as ferrous iron in the sealed canned food, ranging from 1ppm to 10 ppm, which is easy for people to absorb. Provided that there is 5ppm iron in every 350ml tinplate can, then each can of food can provides 1.75mg iron, which is about one tenth of 18mg daily iron intake by human body. In case of rich vitamin C contained in the canned fruit and vegetable juice, iron will be easier for assimilating. That is why this food tinplate can is so widely adopted for packaging food.

1. Properties
A. Tinplate is characterized by its thin gauge, which is between 0.13mm and 0.49mm.
B. Tinning of the tinplate is achieved in a continuous electrolytic process.

2. Advantages
In addition to thin gauge, the tinplate also boasts mechanical properties with a wide range from 230 to 620MPa. Hence, it suits the needs in multiple forming processes and various industries.

The tinplate is available in varied surface finishes, with three different levels of roughness.

Like other steel, tinplate is easy for recycling in line with environmental protection requirements.

Also, with high opacity, and excellent sealing property, tinplate provides ideal protection for food, beverage, and other substances when made into packaging containers.

2. Features of ETP Products

The characteristics of the tin plate are largely determined by the characteristics of the tin.

• Tin is a silver-white metal with a light blue color, atomic weight 118.7, specific gravity 7.28, melting point 2320C in the atmosphere does not change color, chemical properties are also very stable. The tin plate can keep the metallic luster of the tin for a long time.
• Tin is a soft metal, so when tin plates are processed to make cans, the tin layer will not crack and fall off.
• Tin compounds are non-toxic, and when a small amount of tin is dissolved in food, it has no adverse effects on the color, taste, nutritional value of food and human health.
• Tin has good brazing properties, so the steel plate is easy to solder after tin plating, and it is easy to process when tin plates are used to make cans and other containers.
• The shape of the tin plate is smooth and bright like a mirror, and it is easy to paint and print.

3. Mechanical Properties of DR Tin Mill Products

Details of the Tinplate Sheet Coil

1. Reference standards: GB/T 2520-2000, JIS G3303-2002 and DIN EN 10203-1991
2. Raw materials: MR and SPCC
3.Thickness: 0.18 to 0.50mm
4. Width: 260 to 972mm
5. Coil diameter: ID 420mm or 508mm
6. Temper grade: T2, T3 and T4
7. Tin coating: ordinary 2.8 or 2.8g and 5.6g or 5.6g, we can produce tinplate sheet coil according to customer's requests
8. Applications: paint, chemical, battery, electric cable and other industries
9. Package: anti-rust paper, with corner protection. Sheets or coils can be customized

Standard for Temper

• Temper after single reduce JIS G3303-2008

• Temper after Double Reduce(DR)JIS G3303-2008

Surface Finish of Tinplate

Coating Weight

4. Surface appearance

It is determined by the surface appearance of the steel base and whether the tin coating is soft melted.

• Bright surface (B) : The original plate with a smooth surface with a very fine millstone pattern is coated with tin, and then the tin layer is soft melted to obtain a bright surface.

• Rough surface (R) : The original plate with a certain directional grinding stone pattern surface is plated with tin, and then the tin layer is soft melted to obtain a shiny surface.

• Silver surface (S) : The original plate with a rough and dull surface is tinned, and then the tin layer is soft melted to obtain a glossy surface.

• Matte surface (M) : The matte surface is tinned on the original plate with a generally matte surface and then is not softenable.

5. Usage Precautions for ETP

• As ETP is covered by soft metallic tin coatings, due precautions should be taken not to cause scratches by rough handling or vibration during transportation.
• Paintability, printability, solderability, and mechanical properties of ETP tend to 收deteriorate as time elapses after production. Use as soon as possible after delivery.
• Although ETP has excellent corrosion resistance, it tends to rust in a humid atmosphere. Use as soon as possible after unpacking.
• Tin is dissolved by a strongly alkaline solution. When using ETP for making cans for alkaline contents, paint the internal surface.
• As contents that contain sulfur cause blackening of the ETP surface, paint the internal surface.

6. EQUIPMENT & PRODUCTION LINES

Passivation types

• Sodium dichromate cathodic treatment (CE) or 311 process.
• Sodium bichromate impregnation (CP) or 300 process.

7. TINPLATE COILS

8. APPLICATIONS

Modern industrial tinplate is typically produced from cold-rolled, low carbon steel sheets coated on both sides with commercial pure tin. This combination integrates the robust strength and formability of steel with the corrosion resistance, weldability, and aesthetic appeal provided by tin. Tinplate serves as a crucial material in numerous applications across industries. In the food sector, it is extensively used for manufacturing food cans and a variety of containers. Beyond food packaging, tinplate is also employed in the production of stamped products, packaging materials for non-food items such as aerosol cans, bottle caps, and beverage containers. Moreover, it finds versatile use in non-packaging applications including home appliances, toys, stationery, and engineering components.

Particularly suitable for use in the packaging industry, tinplate can also be applied in the following areas.
In the home: cake tins, gas canister components, etc
In the fast food restaurant: coffee tins, cola tins, etc
Electrical and electronic equipment: batteries, electrical components, etc
Automotive components: cylinder head gaskets, oil filters, etc
Building trade: false ceiling rails, space bars for double glazing, light reflectors, radiator fins, reinforced tape, etc

9. Packing and Marking

Offers coils and sheets, coil packed in a vertical form or a horizontal.

A label that indicates the manufacturing history is affixed to the outside of the packaging. In addition, a service card is contained inside.

With regard to types of packing and markings, please consult us.

Shandong Decho Building Materials Technology Co., Ltd (hereafter called “DBM” ) is a professional manufacturer and exporting company of coated steel coils and sheets, with over 13 years of experience in steel industry and 11 years of steel mill work experience, with extensive product knowledge and experience in production process, especially for the supply of coated steel coils with a stable and reliable supply chain of manufacturers and logistics.

DBM is always in pursuit of and committed to providing high quality products and services. Our company has professional quality inspection team members, for each batch of orders can be fully on-site testing and provide test reports, can also accept any third-party testing company on-site testing, we can do is to ensure that each order goods delivered to a high standard, to achieve customer satisfaction, to achieve win-win cooperation.

DBM can meet the need to use colour steel plate as raw material for building. Decho Building Materials colour steel plate is mainly processed into, for example, colour steel corrugated board or colour steel composite sandwich board after our colour steel plate is widely used in the construction of airports, freezers, steel plants, warehouses, and other industrial buildings and commercial buildings, such as the roof of the colour steel tiles, colour steel plate sandwich walls and doors.

DBM only focus on high standard coated coils with warranty service, We are your strict gatekeeper and faithful partner in China import , We always been committed to becoming your long-term reliable supplier in China.