Südpack Medica targets pharma migration risks with new mono-pe barrier

GERMANY – Südpack Medica has introduced a mono-polyethylene sterile barrier, eliminating the polyamide and adhesive layers found in conventional pharmaceutical laminates while retaining mechanical strength and meeting recyclability criteria.

The tubular bag format replaces standard polyethylene, polyamide and polyethylene structures. 

Historically, polyamide supplied stability and puncture resistance that polyethylene alone could not deliver, but required adhesive tie layers to bond incompatible materials. 

Those additives represent potential sources of extractables and leachables, which regulators increasingly scrutinise in sensitive drug applications. 

The new format relies on raw material screening and targeted coextrusion process adjustments to achieve comparable physical performance without the polyamide component.

Migration Risk Drives Formulation Review

The company said interactions between packaging materials and pharmaceutical chemistries are under close scrutiny. 

Even small amounts of migrating substances can raise serious concerns in certain applications, prompting industry requirements to minimise contamination sources. 

The film provides puncture and flex-crack resistance, sealing reliability and optical clarity for life science applications during transport, storage and handling.

Life Cycle Assessment Records 50 Percent Emission Cut

Südpack said the solution is recyclable in established polyethylene recycling streams and under internal assessment criteria. 

A company life cycle assessment found the format reduces carbon dioxide equivalent emissions by more than 50 percent compared with an equivalent PE/PA/PE structure.

Eliminating polyamide reduces the energy and material complexity embedded in the film, while mono-material construction allows the packaging to pass through mechanical recycling without separation steps that most facilities cannot perform economically. 

Südpack said the development demonstrated that high mechanical performance, regulatory compliance and recyclability need not be mutually exclusive.

French Plant Supports Sterile Barrier Production

Earlier this year, Südpack Medica opened its expanded plant in Coulmer, France, aiming to deliver high-quality primary packaging for pharmaceuticals and sterile barrier systems for medical devices and diagnostic applications. 

The company said requirements for pharmaceutical packaging are becoming increasingly stringent, with producers balancing product safety, stability, regulatory compliance and resource efficiency. 

For pharmaceutical manufacturers, mono-material sterile barriers simplify end-of-life processing while reducing migration risk in sensitive drug applications, provided qualification testing confirms seal integrity and barrier performance across transport and storage conditions. 

The launch reflects growing pressure on pharmaceutical packaging suppliers to reconcile patient safety requirements with environmental targets, a balance that has historically favoured multi-material laminates over recyclable alternatives.

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