Jewel cases were introduced in the early 1980s when Compact Discs (CDs) were first launched into the market. Since then the jewel case has remained fairly unchanged from the original design and still manufactured based on standard specifications. Jewel cases have been the main form of CD packaging because it is designed to protect and secure CDs.
So how are jewel cases made? They are made by a process called injection molding. This is the most widely used manufacturing process in the world. Injection molding requires an injection molding machine, raw plastic material, and a mold. The process starts by taking plastic resin that comes in the form of plastic pellets, and then melting them with heat and pressure. The molten material is injected into a mold that is held under high pressure. Once the plastic is cooled, the mold can be opened up and the parts are removed. Injection molding allows for many parts to be produced simultaneously. The process is fairly short, typically lasting at most 2 minutes, which allows for many parts to be made.