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The cone and dome of an aerosol can are metal structural components that connect the can body and the nozzle. · The cone: A tapered structure that transitions from the larger diameter of the can body to the smaller diameter of the dome. · The dome: A slightly arched top structure that secures the valve and ensures stable internal pressure through sealing.

The can is typically filled with a liquid mixture of propellant and payload. When the liquid temperature rises, the gas pressure increases. The dome space provides a buffer zone, allowing the gas to expand without overpressure or severe deformation of the can.

Tinplate aerosol can manufacturing process: 1. Raw material preparation: 2. Printing and coating: 3. Stamping: 4. Dome manufacturing: 5. Dimensional standardization: 6. Quality inspection process:

According to U.S. Code of Federal Regulations (CFR) 49 §173.306, metal aerosol cans must not exceed an internal pressure of 180 psig at 54.4°C (130°F), and the container must be able to withstand at least 1.5 times the thermal equilibrium pressure without rupture or deformation.

Testing Method: · Place the finished aerosol can in water; · Gradually inflate the can using a dedicated pressurizing device; · Record the pressure at which the dome permanently deforms or bursts. Judgment Criteria: Generally, a pressure of at least 1.2 MPa is required, with specific standards depending on the intended use.

The top and main body of an aerosol can are called: 1. The top structure is called the dome. 2. The transition between the dome and the can body is called the cone. The central cylindrical structure of the can, commonly known as the main "body," is called the can body. Therefore, a standard aerosol can can be divided into: · Body · Cone · Dome