Voices of Innovation: Taking injection moulding to the next level

The story behind the world’s first aseptic carton bottle

Pär Andersson, a Tetra Pak Specialist in Plastic Injection Moulding, explains how the development of the world’s fastest injection moulding machine was instrumental in the launch of the world’s first aseptic carton bottle for ambient distribution.

A light bulb image is often used to signify that moment when the solution to a problem becomes apparent. However, in my 30 years of experience, breakthrough innovations are usually not marked by one ‘light bulb’ moment; instead, they are an evolution of thinking, founded in experience, technical expertise and creativity. That is certainly how the ground breaking injection moulding technology behind the world’s first aseptic carton bottle, the Tetra Evero® Aseptic came to be a reality.

When we set about designing the Tetra Evero Aseptic, we wanted to create a package with the opening and pouring functionality of a bottle whilst maintaining the environmental and operational efficiency of a carton package. However, to do this we needed to develop a plastic top which could fuse the bottle opening to a cardboard sleeve, whilst ensuring that the liquid was kept safe and secure.

Existing injection moulding technology would require large production units which are too slow and expensive to run. The cost implications of using traditional injection moulding technology would have been prohibitive for producers. So we set about trying to figure out how to use injection moulding technology in a completely different way, but which would still provide the robustness and reliability required to assure aseptic conditions whilst also minimising costs. That also meant coming up with a polymer to get the right properties for both the package and for protecting the milk inside it.

Injection moulding is one of the most common manufacturing processes in the world, used in manufacturing such products as mobile phones, computers, sports equipment and DVDs. Simply put, materials are injected into a mould to produce parts of a product. We have 25 years of experience in this technology and have used in the production of packages such as the Tetra Top®.

Post time: 01-30-2017