Resource Efficient Innovations Database (REID)

Light-weight recyclable closure for UHT milk cartons

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Light-weight recyclable closure for UHT milk cartons
New light-weight, recyclable closure for its slimline UHT milk cartons
In Use – This closure is already in use in the German dairy industry.

Packaging Reduction, Recycled content/recyclability

Product Categories

Relevant Materials
Liquid Beverage Cartons or other composites, Plastic – rigid

Relevant Packaging Formats
Bottles and jars, Closures and dispensers (including: triggers, dosing aids, reseal and reclose devices etc.)

Supply Chain Phase
Processing, Raw materials / Ingredients, Recovery


The packaging manufacturer has  targeted the UHT milk segment with a lightweight, recyclable closure specifically for its slimline cartons. In addition, all the packaging components can be recycled after use.  The new closure consists of a flange with an integrated cutting ring and a screw cap.  It only weighs 1.85g. As a comparison, the first screw cap developed by the manufacturer for aseptic beverage cartons weighed 4.9g, so the new cap represents a significantly lighter alternative.
The light-weighting has been achieved due to the innovative structural design of the cap; the flange, cutting ring and cap which are moulded as one piece.The closure can be applied to cartons using existing applicators which require only minor adjustments to accomodate the new cap. The reduced weight equates to a useful raw material saving.
The new CombiSwift cap has been developed by SIG Combiblock.
The content in this entry has been obtained from publicly available information sources only (e.g. press releases, website and trade press articles) and is subject to completion of a validation process with the technology supplier.

Potential Benefits

The benefits of this new cap are:
  • Packaging material reduction, and therefore an associated reduction in the carbon impact of the component;
  • Consequently, reduction of waste packaging at the end of life;
  • Improved recyclability of the packaging component.

Intellectual Property

The new CombiSwift cap has been developed by SIG Combiblock.

Consultant View

This manufacturer has developed an innovative light-weight cap design which has significantly reduced the amount of plastic material used in this component of a UHT Milk carton. Similar innovations should enable light-weighting of other packaging formats in other sectors.  Researchers are advised to search the REID database for other examples of innovative design and light-weighting using search terms such as "light-weighting" and "packaging reduction".

Contacts and Further Information

SIG Combibloc Ltd.
Alexander House, 1 Mandarin Road
Rainton Bridge Business Park,
Houghton le Spring, DH4 5RA
United Kingdom
Tel.: +44 191 305 1010
Fax : +44 191 305 1025

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