Packaging Conference 2017 Coffee-capsule industry revolutionised with multilayer compression moulding
USA - At the recent Packaging Coference 2017 held early February in Florida, USA, raw material suppliers, technology providers and distributors, including international players were presented an overview of opportunities and trends in the packaging sector.
Italy-based Sacmi also presented a report on compression technology in the manufacture of coffee capsules, an industry segment with one of the highest potential growth rates in the coming years.
Thanks to a development policy based on continuous innovation, approximately €65m was invested in R&D in 2016. The capsules have the industry's lowest TCO (total cost of ownership - management and running costs), ensure high capsule quality and offer a variety of usable materials, the company claims. Sacmi says it leads worldwide with over 1,700 systems installed internationally with this practical technology.
According to Sacmi, multilayer compression moulding allows a true "multilayer" cap to be made using compression technology: a cap with high strength and barrier properties, with an oxygen transmission rate of less than 0.0005 cc/capsule/day. The company offers the market capsules made of various materials, from PP to PLA (compostable polymer) and PBT, a mono-material that provides the capsules good-barrier properties.
The technological heart of the solution remains the CCM (continuous compression moulding). This Sacmi compression press offers, compared to the alternative injection technology, energy savings of up to 30%, lower cycle times (a case study on Nespresso-compatible PP capsules reduced cycle times, with respect to injection, from 3.8 to 2.4 seconds) and optimised capsule weight, the company adds.
Proposed for both closed (proprietary capsule) and open (compatible capsule) systems, the technology also provides process efficiency: the ability to manage each cavity independently, and thus makes maintenance easier and boosts process efficiency. The process also allows real-time quality control of each capsule thanks to the integration of the company's vision systems.