Polystyrene Box Alternatives

Sustainable. Strong. Food-Safe.

We supply a range of eco-friendly packaging designed to replace traditional polystyrene (EPS) boxes. From flat-packed Chilltainers to recyclable oyster trays, our solutions support seafood processors, exporters, and retailers aiming to reduce waste and improve logistics.

Engineered Alternatives to EPS for Smarter, Sustainable Cold Chain Packaging

Close the Loop’s polystyrene box alternatives are next-generation packaging solutions designed to replace single-use EPS foam in seafood, shellfish, and cold chain logistics. Developed for thermal performance, hygiene, and recyclability, these cartons and trays deliver the same protective strength as polystyrene, without the landfill impact. Crafted from food-grade corrugated or laminated fibreboard, each solution is flat-packable, lightweight, and compatible with air freight and export requirements. Whether you need Chilltainers for temperature retention or recyclable oyster trays for direct-to-market freshness, our designs combine sustainability, efficiency, and premium presentation for high-performance seafood logistics.

Chilltainer Cartons

Crafted from food-grade corrugated cardboard laminated with reflective metallised polyester, Chilltainers offer thermal insulation, moisture protection, and brand-ready surfaces for chilled and frozen seafood.

Key Benefits

Leakproof & flat-packable

Airline & export approved (select sizes)

Reflective lining for thermal retention

Greater internal volume vs. EPS boxes

Custom printing & sizing available

100% recyclable with >95% fibre content

Available Sizes One Piece

  • Small: 366 × 283 × 105 mm – 11 L
  • Medium: 366 × 283 × 140 mm – 14 L
  • Large: 519 × 260 × 175 mm – 26 L

Available Sizes  Two Piece

  • Salmon: 680 × 315 × 160 mm – 34 L
  • Lobster: 570 × 360 × 175 mm – 36 L

Corrugated Cardboard Cartons

Fully recyclable and biodegradable, these food-grade cartons are designed for cost-effective seafood logistics without compromising safety or hygiene.

Key Benefits

100% recyclable and biodegradable

Flat-packed for reduced freight costs

Food-safe and chilled-transport ready

Customisable with print and sizing

Two Piece Carton

  • Base: 550 × 340 × 170 mm
  • Lid: 565 × 365 × 169 mm

One Piece Carton

  • 457 × 329 × 100 mm

Our Product Range

We offer a complete portfolio of seafood packaging and handling solutions:

Corflute

Corflute

Chilltainer

Chilltainer

Why Choose Our EPS Alternatives?

  • Eco-conscious alternative to foam packaging
  • Flat-packed for efficient transport and storage
  • Custom branding and sizing options
  • Airline- and freight-ready
  • Leakproof and hygienic for seafood environments

Industries Served

Oyster and shellfish farms

Seafood processors and exporters

Foodservice and retail seafood brands

Airline catering and freight logistics

Cold chain and meal prep operations

Performance in Cold Chain Logistics

Thermal Retention

Reflective lining helps stabilise temperature in Chilltainers

Moisture Protection

Leakproof designs reduce spoilage and contamination

Export-Approved Sizes

Meets airline and international freight standards

Higher Internal Volume

Greater usable space compared to EPS equivalents

Efficient & Durable

Nestable flat-packs reduce bulk and simplify handling

Sustainability Benefits

100% Recyclable Materials

Recyclable fibreboard and laminates

Plastic-Free Options

Ideal for brands reducing single-use plastics

No EPS Waste

Eliminates landfill-heavy foam packaging

Freight-Optimised

Lower transport emissions via flat-packed design

Branded with Minimal Impact

Custom printed with low-waste processes

Explore Our Other Cartons & Pouches Solutions

From generic to fully customised cartons, our seafood packaging ensures product protection, freshness, and branding impact during transit.