Bottle caps and closure types and manufacturing

Bottle containers are highly used in packaging products by almost every consumer product manufacturing companies whether it is a food and beverage production unit or medical and agriculture units. Caps & closures are designed to keep the liquid, solid, semi-solid, or gaseous content inside a container safe, clean, and providing easy access to consumers to the content inside. Among all the material types, the most common material used to manufacture covers for containers is plastic. People, around the world, interact with millions of bottle closures.

How plastic closures are made?

Most of the plastic closures are made using bottle closure mold and the technique involved is known as injection molding. Injection molding is a process in which thermoplastic polymer pellets are heated until they become soft and flexible enough to take another shape. Suppose, we are going to create caps for water bottles, so the process will be like this- the heated plastic will be injected into a detailed bottle cap mold under very controlled and high pressure. According to the design of cap mould, the desired shapes of caps are formed. Once the material has cooled enough to harden, the mould is opened and the bottle caps are ejected out for further processing.

Injection molding is popular to produce plastic products because of the following reasons-

·         Large amount of plastic parts can be manufactured very quickly and efficiently.

·         Being automated process, the cost of labor is highly reduced plus thousands of similar parts can be produced in one go. Thus, decrease the overall cost of production.

·         Plastic component created has high tolerance and reliability.

·         Post-production waste is relatively lower than other manufacturing methods and waste plastic can be used for future use.

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