Poly Plus Boxes with Corrugated Outers for Chilled Deliveries

Our PolyPlus insulated boxes combine high-performance EPS insulation with durable corrugated cardboard outers for added protection during transit. Designed for chilled, frozen and temperature-sensitive deliveries, these hybrid insulated shipping boxes are ideal for courier networks, food distribution and cold-chain transport where both insulation and external durability are essential.

The reinforced outer layer helps protect products during handling and delivery while the insulated EPS core maintains stable temperatures for fresh food, seafood, meal kits and pharmaceutical shipments. PolyPlus boxes are widely used by businesses requiring dependable insulated packaging for parcel delivery and commercial cold-chain logistics.

Need help choosing the right insulated packaging?

Not sure which option is best for your product or delivery route? Here are quick answers to the most common questions - and if you’d like, we can point you to the right setup in minutes.

How do I choose the right size?

Start with your product’s outer dimensions (including any trays, vacuum packs or cartons), then choose a box with a little extra space for ice packs and insulation clearance. For best temperature control, aim for a snug fit rather than lots of empty air space. If you’re between sizes, pick the size that allows room for your cooling solution and protective fill.

How do I keep food chilled or frozen in transit?

Temperature performance depends on pack-out, ambient conditions and journey time. For most UK deliveries, the best results come from:
• Pre-chilling products before packing
• Using the right number/type of ice packs
• Minimising empty space inside the box
• Sealing well and avoiding repeated opening
If you tell us what you’re shipping and how long it needs to stay cold, we’ll recommend a simple setup.

Do you have minimum order quantities and what are delivery times?

There are no minimum order quantities - order what you need, when you need it. Delivery speed depends on the product type and your location, and you’ll see options at checkout. If you’re working to a deadline (or need repeat shipments), contact us and we’ll help you choose the most reliable option.

Recognised Standards

JB Packaging works to recognised quality and environmental standards, including
ISO 9001 and ISO 14001.

Industry Credentials

JB Packaging is connected to recognised organisations including Living Wage, BPF, Make UK and is an APRO Approved supplier.

Built for Business

Our EPS and EPP box solutions are designed to support practical commercial use, with a focus on reliability, protection and operational suitability.

Insulated Shipping Boxes for Courier & Parcel Deliveries

PolyPlus boxes are designed for businesses shipping temperature-sensitive products through courier and parcel delivery networks where additional packaging strength is often required. By combining insulated EPS packaging with a corrugated cardboard outer, these boxes provide greater protection during handling, stacking and transportation while maintaining reliable thermal insulation throughout transit.

This makes them particularly suitable for chilled and frozen food deliveries, meal prep shipments, seafood transport and temperature-controlled ecommerce fulfilment. The additional outer layer also helps improve presentation and durability during national courier distribution.

For businesses shipping fragile or perishable products, insulated packaging with an external cardboard layer can help reduce damage risk while supporting more consistent cold-chain performance across longer delivery routes.

PolyPlus Boxes for Frozen Food, Seafood & Meal Kit Packaging

Temperature-controlled food deliveries require packaging that performs consistently across varying delivery conditions. PolyPlus insulated boxes are commonly used for frozen food deliveries, chilled meal kits, seafood shipments and fresh produce transport where temperature stability and packaging strength are equally important.

The insulated EPS interior helps reduce temperature transfer during transit, while the corrugated outer provides additional structural protection during courier handling. This combination makes PolyPlus boxes a practical solution for businesses sending perishable goods through parcel networks rather than refrigerated freight alone.

The range includes multiple capacities suitable for both smaller ecommerce shipments and larger commercial deliveries, helping businesses choose insulated packaging that matches their operational requirements and delivery volumes.

Reliable Cold Chain Packaging with Added Transit Protection

Businesses operating within temperature-controlled logistics often require packaging that balances insulation performance, handling durability and operational efficiency. PolyPlus insulated boxes are designed to support practical day-to-day cold-chain distribution while remaining lightweight, reliable and suitable for fast-moving commercial environments.

Alongside chilled and frozen food deliveries, these insulated shipping boxes are also suitable for pharmaceutical products, medical supplies and other temperature-sensitive goods requiring secure transport conditions.

For reusable insulated packaging options, explore our Reusable Loopra Boxes collection. Businesses looking for standard EPS insulation without reinforced outers can also browse our Poly Boxes range.

Learn more about our approach to EPS Recycling and sustainable temperature-controlled packaging solutions.