Purpose of Closures
Many containers and packages require a means of closing. It can be a separate device or seal or sometimes an integral latch or lock. Depending on the contents and container, closures have several functions:
- Keep the container closed and the contents contained for the specified shelf life until time of opening
- Provide a barrier to dirt, oxygen, moisture, etc. Control of permeation is critical to many types of products: foods, chemicals, etc.
- Keep the product secure from undesired premature opening
- Provide a means of reclosing or reusing the container
- Assist in dispensing and use of product
- Allow reasonable ease to open the container by the intended user. Difficult to open containers may cause wrap rage. The force or torque required to open a closure is an important consideration for packaging engineers.
Many types of packaging with their closures are regulated for strength, safety, security, communication, recycling, and environmental requirements.
Read more about this topic: Closure (container)
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