The History Of Injection Molding

The beginning

Plastic injection molding was invented in the late 19th C, with the first molding machine patented in 1872 by Hyatt and John.

While the machine?was quite simple,it quickly led to the growth of a plastic mfg industry.

1930s was a decade of innovation for plastic mfg industry. In 1903s, German scientists, Theodore Becker?and Arthur Eichengrun, created soluble forms of cellulose acetate, which was?significantly less flammable than previous alternatives. Thermoplastics?like?polyvinyl chloride, polyolefins, and polystyrenewere were invented during this time.

World War Two

World War Two popularized airplanes, led to dramatic advancements in automotive tech, and enhanced the US?war manufacturing economy that later powered?the first stage of the post-war industrial revolution. Plastics?elicited a high demand for inexpensive, mass-produced materials.

This demand following World War II was in part a result material shortage,?plastics stepped in to fill the gap, providing an affordable substitute. As plastics popularized?gradually, so did plastic injection molding.

Hendry is an important name in manufacturing history

In?1946, American inventor James Watson Hendry created the world’s first extrusion screw injection machine. Using a rotating screw, he?better control the injection process itself, which?significantly?increased the quality of the products produced.

After that, he?went on to build?the first gas-assisted injection molding process?ever, a pivotal innovation that allowed for the creation of long, complex, hollow products. With materials providing increased strength and reduced weight, plastic production had been taking over?steel production.?By 1990, aluminum molds had become a faster, cheaper production alternative to steel molds.

The Current State of Plastic Injection Molding

Nowadays , the opportunities provided by plastic injection molding are implemented by essentially every manufacturing sector; auto, electronics,?home appliances... Plastic Injection Molding is an affordable and effective way of producing high-quality products.What more worth mentioning is that, computers have made the whole design and manufacturing process?much?easier?more precise.