Mono-Material Flexible Packaging: Recyclable BOPP & BOPE Structures
Most flexible packaging in use today is built from multilayer laminates combining two or more incompatible polymer families — PET/PE, PA/PE, OPP/PE, or structures incorporating aluminium foil. These combinations deliver performance, but at a fundamental cost : they cannot be mechanically recycled, because sorting and reprocessing infrastructure cannot separate mixed polymers at scale.
The transition to mono-material flexible packaging addresses this directly. By confining a laminate structure to a single polymer family — all-PP or all-PE — the packaging becomes compatible with existing mechanical recycling streams, enabling a genuinely circular end-of-life pathway. This transition is now actively driven by the EU Packaging and Packaging Waste Regulation (PPWR), CEFLEX design-for-recycling guidelines, and retailer sustainability commitments from major European brands.
Bioxpack’s specialty BOPP and BOPE films are engineered specifically for mono-material laminate structures — providing the technical foundation converters and brand owners need to make this transition without sacrificing barrier, seal integrity or machinability.
Circularity
Single polymer family =
easier recycling
Downgauging
Reduce plastic without losing performance
High-speed compatibility
Flow-pack, FFS, cartoning lines
Regulatory alignment
Ready for EU 2030 & EPR schemes
Our BOPP and BOPE mono-material solutions
Mono-Material PE Structures: BOPE-Based Solutions
Polyethylene mono-material structures address the largest volume transition opportunity in flexible packaging — replacing mixed laminates where PE already dominates the sealant layer but is combined with PET, PA or OPP outer webs that break recyclability. In a mono-material PE structure, the outer web is replaced with a BOPE film, keeping the entire laminate within the PE recycling stream.
BOPE — biaxially oriented polyethylene — provides the stiffness, optical clarity and dimensional stability that blown or cast PE films cannot deliver, enabling it to function as a structural outer web on high-speed converting lines. Bioxpack’s 3NHD range covers four BOPE grades for different converting configurations : non-sealable lamination grades for reverse-printed PE mono-material structures, a directly sealable grade for single-web HFFS applications, and a premium matte grade for stand-up pouches and doypacks where brand aesthetics require a soft-touch finish within a recyclable PE structure.
Our BOPE (Biaxially Oriented Polyethylene) 3NHD films are ideal for recyclable, laminated PE structures.
Key advantages:
- Excellent flatness and stiffness
- Printable, metallizable, laminable
- High optical clarity
- Corona-treated or untreated versions
Applications: bakery, snacks, pet food, pouches, doypack
How the Monomaterial PE Structure Works
BIOXPACK’s 3NHD film integrates perfectly into laminated PE monomaterial structures. The example below shows how it replaces PET/PE:
3NHD-Based Recyclable Laminate
Recyclable in PE stream Printable and barrier-enhanced Excellent machinability for flow-pack & doypack Replaces PP/PE, PET/PE or PA/PE structures
Ideal for: food pouches, sachets, pet food bags, doypacks
BOPP Films — ER-PP Range
Polypropylene mono-material structures replace mixed laminates containing BOPP or OPP outer webs combined with PE or other polymer sealant layers. In a mono-material PP structure, both the outer web and the sealant layer are PP-based — making the complete laminate compatible with PP mechanical recycling streams.
Bioxpack’s specialty BOPP grades from the ER-PP range are engineered for integration into mono-material PP laminates. Key requirements for the outer web in these structures include precise COF control for machine compatibility, defined shrinkage profiles to maintain dimensional stability in the laminate, surface treatment levels that ensure lamination adhesion with PP sealant films, and barrier properties — including metallized options — that maintain product shelf life within an all-PP structure. Several ER-PP grades are specifically formulated and validated for mono-material PP applications in line with CEFLEX design guidelines.
For envelope window applications, the AW12R-T1 grade is designed specifically for lamination with PP cast films in mono-material PP envelope structures — replacing OPS and PS window films that are incompatible with PP recycling.
Key features:
- High gloss and optical appeal
- Gas and moisture barrier
- Alcohol resistance (optional)
- Grades with low/high COF
- Printable, metallizable, sealable
Applications: biscuits, tea bags, wipes, single-dose formats
How Bioxpack Supports the Transition
Transitioning from a mixed-polymer laminate to a mono-material structure is not a simple film substitution. It requires evaluating the complete laminate architecture, validating machine compatibility on existing converting and packaging lines, and qualifying the new structure against the product protection and shelf life requirements of the end application.
Bioxpack’s technical team works directly with converters and brand owners throughout this process. We provide grade selection support based on the specific converting format and machine type, technical data sheets for laminate structure design, sample rolls for machine trials, and support for industrial validation on customer lines. Our in-house R&D laboratories can develop custom formulations where standard grades require adjustment for specific application constraints.
This co-development approach — embedded in our working method since our founding — means we engage as a technical partner in the transition process, not simply as a film supplier.
Benefits
100% recyclable mono-material structures (BOPE or BOPP)
Reduced grammage for lower plastic consumption
Designed for high-speed lines — flow-pack, cartoning, VFFS
Printable, sealable, and laminable without structural complexity
Compliant with EU regulations and circular economy goals
Start your Mono-Material Transition
Whether you are at the early evaluation stage or ready to qualify a specific structure on your converting line, our technical team is available to support you. Contact us to discuss your current laminate structure, target application and converting format.