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Home » Industry News » Packaging Industry News » Sidel’s launches new 100% rPET lightweight bottle base for beverage sector

Sidel’s launches new 100% rPET lightweight bottle base for beverage sector

STARLITE®-R STILL is a new bottle base that employs Sidel’s patented technology to ensure 100% recycled PET (rPET) integration, lightweighting, and high-speed production for water, juices, milk, and edible oil from 0,25L up to 2,5L.

“Mainstream food and beverage manufacturers are seeking designs that range from simple, lightweight options to more aesthetic shapes with optimised weights, yet all compatible with high-speed production,” comments Mikael Derrien, manager packaging innovations at Sidel.

“They aim to reduce production costs through lightweighting, lower blowing pressures, and reduced energy consumption, while also striving to minimise their carbon footprint in response to regulatory pressures and consumer demand.”

“Today there are bottle bases on the market suitable for lightweight designs and high production speeds, however, they’re designed for virgin PET bottles. Sidel’s StarLITE®-R STILL is the only solution on the market specifically developed to address recycled PET that achieves the high performance necessary in this competitive market space.”

Balancing production speed, material type, and bottle weight presents a complex challenge for manufacturers in maintaining high performance, but the StarLITE®-R STILL overcomes these with precise bottle base shaping and efficient material distribution.

Its innovative design can also be seamlessly retrofitted onto existing production lines ensuring versatility and the solution requires a low blowing pressure, further enhancing its sustainability credentials.

High performance with patented design and technology

The StarLITE®-R STILL bottle base features Sidel’s patented technology which includes smooth material stretching and precise distribution; optimised venting for easy shaping; and an efficient base cooling circuit ideal for rPET which is likely to be processed at higher temperatures.

The new design ensures the base does not deform or break, crucial for maintaining the bottle’s integrity during production, conveying, storage, transportation, and use.

The mould base’s rounded-edge design makes it easier to shape during blow moulding, which increases the bottle base resistance to defects such as bursts during the blowing process. This feature is particularly important for lightweight bottles, which are more prone to such issues due to the use of thinner material.

With a high base clearance, the structural design prevents deformation, ensuring functionality and stability even in high-temperature conditions. The bottle base also performs reliably during high-speed production, thanks to an efficient cooling. This cooling process prevents deformation and defects, maintaining consistent quality at rapid manufacturing speeds.

The bottle production process can use up to 20% less blowing pressure due to improved mould venting of the StarLITE®-R STILL mould base. The carefully designed grooves and venting holes in the mould ensure that air escapes efficiently, allowing the bottle base to take its desired shape perfectly, even at lower pressures. This reduces energy consumption and production costs while maintaining quality.

Improved sustainability and costs for still drinks and edible oils

By switching from virgin PET to 100% rPET thanks to StarLITE®-R STILL, manufacturers can benefit from a reduction in 2,400 tonnes of CO² equivalent each year.

This bottle base can also be blown at lower pressure, only requiring 16 bars – a reduction of up to 20% on standard air blowing operations, translating to a further saving of 51 tonnes of CO² equivalent and to €205,000 saved, each year.

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