What is the historical origin of mold injection molding?
Injection Molding is a modern plastic molding process, and its historical origin can be traced back to the 19th century. The historical origin and development process of injection molding can be divided into:
1. Early 19th century: The prototype of early injection molding technology. In the early 19th century, people began to explore the use of plastic materials for molding. The earliest injection molding technology was invented by John Wesley Hyatt in 1868. He invented a method of dissolving cellulose nitrate (a plastic) in phenolic resin and injecting it into a mold to form a product. This is considered to be the prototype of open mold injection molding, laying the foundation for later development.
2. Early 20th century: Commercial application of injection molding technology. In the early 20th century, injection molding technology was gradually commercialized and applied to industrial production. In 1900, Henry Ford of the United States began to use injection molding technology to produce automotive parts. The commercial application of injection molding technology promoted its development and promoted the large-scale production of plastic products.
3. 1940s: The emergence of modern injection molding machines. In the 1940s, new injection molding machine designs and technologies greatly improved the efficiency and precision of the injection molding process. The first injection molding machine with a screw propulsion system appeared, which can better control the flow and filling process of plastics. The emergence of this injection molding machine marks the development of modern injection molding technology.
4. 1950s: Widespread application of thermoplastics. In the 1950s, the development and widespread application of thermoplastics promoted the further development of injection molding technology. Thermoplastics have the characteristics of good plasticity and stable molding, and have become the main materials for injection molding technology. For example, the expansion of the application of thermoplastics such as polyethylene, polypropylene, and polystyrene has promoted the popularization and development of injection molding technology.
5. 1970s to present: Further development of injection molding technology. After the 1970s, injection molding technology has been widely used in machinery, electronics, automobiles, medical equipment and other fields. With the continuous progress and innovation of science and technology, the design and manufacturing technology of injection molding machines have been continuously improved, and the efficiency, precision and reliability of the injection molding process have been significantly improved.
In the past few decades, open mold injection molding technology has been rapidly developed and widely used. The degree of automation of injection molding machines has been continuously improved, and the control system has become more precise and intelligent. The development of new materials and additives enables injection molding technology to meet more special needs, such as high temperature, wear resistance, flame retardancy, etc.
Overall, as a modern plastic molding process, open mold injection molding has undergone a long period of development and improvement. From its prototype in the early 19th century to modern efficient and precise injection molding technology, open mold injection molding plays an important role in the production of plastic products and continues to promote the innovation and development of plastic products. With the continuous advancement of science and technology and the continuous expansion of applications, open mold injection molding technology is expected to continue to develop in the future and respond to changing market demands.
