Development history of aerosol cans

The origin of aerosol cans
The history of aerosol cans dates back to the early 20th century, when they were developed as a way to dispense pesticides. The first aerosol can was invented by Norwegian inventor Erik Rotheim in 1926. It used a crimping valve to control the flow of the product. However, it was not until the 1940 s that aerosol cans began to be widely used, especially during World War II, when aerosol cans were widely used to transport pesticides and other chemicals to control pests and diseases.

Application areas expand
Over time, the scope of application of aerosol cans has gradually expanded, not limited to pesticides. They began to be used in areas such as paints, air fresheners and hair sprays. In the 1950 s, aerosol cans ushered in a major innovation, the introduction of liquefied petroleum gas (LPG) propellant. This enables better product delivery and promotes the development of new types of products, such as foam cleaners and lubricants.

Innovation of integrated tank
The introduction of one-piece tanks in the 1960 s was another major development in the history of aerosol cans. This design eliminates the need for a separate valve, reduces the risk of leakage, and makes the canister more reliable and easier to manufacture. Integrated valves also enable the use of more complex valves, such as metered valves, to enable the delivery of doses of medicament in the form of inhalers and nasal sprays.

Innovation in Technology and Design
Over the years, with the continuous improvement of materials, coatings and printing technology, the design of aerosol cans has also continued to evolve. The use of plastic coatings and inks makes it possible to create more attractive and durable labels and designs. Advances in can design and manufacturing have made it possible to produce cans with greater precision and consistency.

Modern application of aerosol cans
Nowadays, due to its convenience, reliability and versatility, aerosol cans are widely used in many industries, such as the individual care industry, the industrial automobile industry, the medical and health care industry, and the food and beverage industry. They are still an important packaging type for various products, and their design and technology may continue to develop in the coming years. Aluminum aerosol cans play an important role in modern packaging and provide a reliable packaging solution for products.

Cut three samples with a length of 250 mm from one PJ V-ribbed belt, and mark a marking line with a spacing of 100mm at the middle position of the PJ V-ribbed belt. When more than three samples cannot be taken from one PJ V-ribbed belt, samples can be cut from the same batch of PJ V-ribbed belt, but must be indicated in the report. 7.4.2 High temperature resistance test method
Place the sample at 100 ℃ ± 2 ℃ for 96 h ± 1 h and then take it out. After standing at laboratory temperature for more than 2h, bend it along a cylinder with a diameter of 20 mm at a contact angle of at least 90 °.