Plastic injection molding is a critical process in manufacturing that shapes products based on daily use and for other purposes. In this it allows the companies  to produce large quantities and provide details about the plastic parts in an efficient and accurate manner. “From car parts to medical devices, injection molding is playing a big role in today live”. It is a development process in which we will explain it like a story, how it progressed and evolved.

The Early Days of Plastic and Molding

Let’s see the history of plastic injection molding started when plastic was invented. When we look at the 18th century, notice that people basically used natural materials like rubber and wood for carrying there stuff. But people needed an affordable and flexible type of material that they could use to create more space and move their stuff from one place to another. Which is very easy for people.

So, keeping in mind the need for all these things, the invention take place and first synthetic plastic was successfully created, and called Parkesine, by Alexander Parkes in 1862. Parkesine was made from cellulose, which could be molded when heated and would hold its shape after cooling.

In 1868, John Wesley Hyatt developed celluloid and he was the first one to introduce plastic in the market. He aimed to find a substitute for ivory in billiard balls.

The Birth of Injection Molding

In 1872, John Wesley Hyatt and his brother Isaiah developed the first injection molding machine. Earlier machines were quite simple, working as small amounts of plastic to form elements. All the small elements of plastic are heated and brought into liquid form, then taken into the mold and injected into the mold, and after that, it is kept at cooled temperature, and when it harder, then a mold taken shape.

From Starting the injection molding process was very basic and the products we made were limited in quantity. The Hyatt brothers Use their machine and make simple items like buttons, spoon etc. Keeping in mind the simplicity of these cases, he laid the foundation of how the molding technology will become hi-tech in the future.

How Has Plastic Injection Molding Progressed Since It Started?

The first molding machine was based on a relatively simple mechanism. The process was improved by German scientists Arthur Eichengrün and Theodore Becke, who managed to create less-flammable solutions by developing soluble forms of cellulose acetate in 1903.  It was eventually available in a powder form that was easily injection molded. Arthur Eichengrün developed the first injection molding press in 1919. In 1939, Arthur Eichengrün patented the injection molding of plasticized cellulose acetate.

During the 1930s, the plastics manufacturing industry saw immense progress. At this time, polyvinyl chloride, polystyrene, and polyolefins, some of the best-known thermoplastic materials, were invented.

 World War II significantly changed the United States’s manufacturing economy, which would later power the first stage of the post-war industrial revolution. This period also created a high demand for inexpensive, mass-produced materials with plastics.

After World War II, this demand for plastic was in part a result of material shortages. For example, rubber production was interrupted by the war across Asia and attacks on shipping lanes. In addition, tanks and other war applications created a massive demand for metal. As steel production decreased, plastics were used as a substitute for metal and provided an affordable substitute. As plastics gradually popularized, so too did plastic injection molding. Its effectiveness in this era was primarily attributed to efficient, cheap, large-scale manufacturing.

How Does Plastic Injection Molding Work Now?

Plastic injection molding today works a little differently from before World War II. The opportunities provided by plastic injection molding are applied by essentially every manufacturing sector:

• Electronics
• Automotive
• Home appliances
• Housewares

and more.

In addition, plastic injection molding is an affordable and effective method of producing high-quality parts and products.

Today’s technology is quite similar to the technologies used in the past. However, computers have made the whole design and manufacturing injection process more manageable. Injection machines can use computers to make manufactured parts with greater precision. In the present day, plastic components are often the preferred choice for advanced technological and scientific applications.

The Current State of Plastic Injection Molding

Today, the opportunities provided by plastic injection molding are implemented by essentially every manufacturing sector; electronics, automotive, home appliances, housewares. Plastic Injection Molding is an affordable and effective method of producing high-quality parts and products.

The technology used today is quite similar to the technologies used in the past. However, computers have made the whole design and manufacturing process easier. The results are also more precise, and now plastic parts are often the preferred choice for advanced technological and scientific applications.

Conclusion

This article provided a review of the history of the injection molding process and how it has evolved over time. Plastic Injection Molding is an essential manufacturing process used to create many of the plastic products. In this, the technique we used that help us to produce product in large scale with great accuracy and efficiency.

As, technology rapidly get advanced in the 20^th century the plastic uses day by day increased. And as per the user requirement the manufacturing of plastic product help us for innovations. Now a days, plastic injection molding continue to evolve because day by day the use of plastic in so many sectors like Domestic purposes, electronics, Automobile sector etc.