In different application scenarios, the performance and specifications of Electrolytic Tinplate have different specific requirements. The following is a detailed introduction for you:
1. Food and beverage packaging:
Performance requirements:
Good corrosion resistance: Food and beverages have a certain acidity or alkalinity. Tinplate needs to be able to effectively resist the corrosion of the contents and prevent the dissolution of metal ions from affecting the quality and safety of food and beverages. For example, for juice drinks with strong acidity, if the tinplate has poor corrosion resistance, it may cause the beverage to deteriorate and produce odors, and may also cause metal ions to exceed the standard and endanger human health.
Non-toxic and odorless: Direct contact with food and beverages must ensure that the material itself is non-toxic and will not release harmful substances or odors into the contents to ensure the quality of food and beverages and the health of consumers.
Good sealing: It can effectively isolate external factors such as air, moisture and light to prevent food and beverages from being damp, oxidized and deteriorating due to light. For example, if the sealing of milk powder packaging is not good, the milk powder is prone to moisture and agglomeration, and the nutritional content may also be damaged.
Appropriate strength and hardness: It needs to have certain strength and hardness to withstand various external forces during processing (such as stamping, forming) and transportation and storage, and it should not be deformed during packaging and stacking to ensure the integrity of product packaging.
Specification requirements:
Thickness: The general thickness is between 0.15 mm and 0.5 mm. For example, ordinary canned packaging often uses tinplate of about 0.2 mm, and thinner ones are used to make can bodies, etc.
Tin plating amount: The tin plating amount of food and beverage packaging is usually high, generally between 11.2 grams and 22.4 grams per square meter, to ensure good corrosion resistance and welding performance.
Size: According to the different shapes and sizes of packaging containers, there are various sizes of various specifications. Common ones are coils with a width of more than 1 meter, and there are also fixed-length plates, such as 300 mm × 500 mm, 500 mm × 700 mm, etc., which are used to make small food packaging boxes.
2. Chemical product packaging:
Performance requirements:
Excellent chemical corrosion resistance: able to withstand various corrosive substances of chemical products, such as acid, alkali, salt, organic solvents, etc., to prevent tinplate from being corroded and damaged, resulting in leakage of chemical products. For example, containers containing strong acids and alkalis require extremely high chemical corrosion resistance of tinplate, otherwise corrosion perforation may cause safety accidents and environmental pollution.
Good sealing: Similar to food and beverage packaging, it is necessary to effectively prevent chemical products from volatilizing, leaking, and external moisture and impurities from entering the packaging to affect product quality. For example, some volatile organic solvents, if the packaging is poorly sealed, will not only cause product losses, but also pollute the environment and endanger human health.
A certain strength and toughness: Chemical product packaging may be subject to external forces such as collision and extrusion during handling and transportation. Tinplate needs to have sufficient strength and toughness to withstand these external forces to avoid packaging rupture and damage. Large chemical raw material barrels are often subject to various external forces during loading and unloading and transportation, and require high strength and toughness of tinplate.
Specification requirements:
Thickness: The thickness is usually between 0.3 mm and 1.2 mm. For large chemical storage tanks, etc., thicker tinplate may be used, while small chemical reagent bottles may use thinner tinplate.
Tin amount: The tin amount is determined according to the corrosiveness of the chemical product and the use environment of the packaging. Generally, the tin amount per square meter is between 5.6 grams and 16.8 grams.
Size: There are also coils and cut-to-length plates. The width of the coil can reach more than 1.2 meters. The size of the cut-to-length plate is determined according to the specific packaging requirements of the chemical product, such as 800 mm × 1000 mm, 1000 mm × 1200 mm, etc. The size of the plate used to make chemical barrels and tanks is usually larger.
3. Electronic component manufacturing:
Performance requirements:
Good conductivity: As a carrier or connecting material for electronic components, it needs to have excellent conductivity to ensure the stable transmission of electronic signals and reduce signal loss and interference. For example, in printed circuit boards (PCBs), the conductivity of tinplate is crucial to the performance and reliability of the circuit.
Good solderability: It is easy to weld with other electronic components to form a reliable circuit connection. During the welding process, it must be able to combine well with the solder, and the welding joint must have high strength and good conductivity. For example, in surface mount technology (SMT), the solderability of tinplate is very high, otherwise it will affect the welding quality of electronic components and the performance of the whole machine.
High dimensional accuracy: The manufacturing of electronic components has extremely strict requirements on dimensional accuracy. The dimensional deviations of the thickness, width, length, etc. of the tinplate must be controlled within a very small range to ensure the installation accuracy of electronic components and the accuracy of circuit layout. For example, the tinplate frame used for chip packaging has a dimensional accuracy that directly affects the packaging quality and performance of the chip.
Good surface quality: The surface should be flat and smooth, without scratches, pits, rust and other defects, so as not to affect the installation and performance of electronic components, or cause circuit short circuit and other faults. For high-precision electronic components, such as microprocessor chips, the surface quality requirements of tinplate are extremely high.
Specification requirements:
Thickness: The thickness of tinplate used in the manufacture of electronic components is relatively thin, generally between 0.05 mm and 0.3 mm. For example, the thickness of common tinplate for PCB is mostly 0.1 mm to 0.2 mm.
Tin plating amount: The tin plating amount is moderate, and the tin plating amount per square meter is usually between 2.8 grams and 8.4 grams. It is necessary to ensure good solderability and avoid affecting the conductivity or increasing the cost due to the excessive thickness of the tin layer.
Size: It is mainly based on fixed-length plates. The size is determined according to the specifications and manufacturing process of the electronic components. Common sizes are 50 mm × 50 mm, 100 mm × 100 mm, etc. The size of tinplate used to make small electronic components may be smaller.
