Twist Band Closure in PLA-Based Bioplastic

Among the outstanding innovations presented by the Spanish manufacturer of compostable additives and bioplastics ADBioplastics at GreenPlast 2025, BioLoop Band is a new type of filament used as a twist band closure (a flexible wire, usually made of steel or aluminium, coated with a plastic layer, used to securely close various products). This development aims to transform the use of single-use closures in sectors such as food, agriculture and consumer goods.

This new filament emerges as a sustainable alternative to traditional twistband closures, either with or without metal core, made of materials such as PVC or LDPE, commonly used to close products such as sliced bread or toy packaging, cables, extension cords and other household or electronic products. In the agricultural field, it is used for the trellising of horticultural and fruit crops. The mixed structure of conventional closures makes them difficult to recycle and generates a negative environmental impact due to their composition and small size.

BioLoop Band is made from PLA-Premium, a bioplastic that provides environmental and functional advantages. Its main benefits include: a reduction of up to 55% in the use of material compared to traditional closures with a metal core, its compostability (it can be disposed of with organic waste), respect for soil fertility, its ability to elongate with heat (which facilitates plant growth without damaging it), and its resistance to both impact and torsion, allowing its repeated use in closure processes.

PLA-Premium offers excellent performance in terms of both flowability and mechanical strength, and its special grades can be blended with plant or mineral fibres. All products using PLA-Premium are both compostable and bio-based, and show significant improvements over pure PLA, especially in terms of physical properties and ease of processing. This material can disintegrate in less than three months under industrial composting conditions, which is endorsed by the OK Compost Industrial certification issued by TÜV Austria.