3mm, 4mm and 5mm Correx® boards
If you need material for applications such as protection, templating, signage or manufacturing returnable packaging, Correx® sheets are a popular, versatile option.
Correx® is a brand name for corrugated plastic material. Manufactured from Polypropylene, Correx® sheet is lightweight, durable, water-resistant, easy to clean, and available in a range of colours and grades. Thanks to its versatility, printable surfaces and ease of fabrication, it is particularly suited to packaging, floor protection, construction, and signage applications.
At GWP Correx®, we have an extensive stockholding of the most popular sizes, weights and colours of packaging-grade Correx®. As such, and unlike many Correx® board suppliers, we allow you to source low to medium volumes of 3mm, 4mm and 5mm Correx® boards on short lead times at competitive price points.
Please note: Correx® is a registered and/or unregistered trademark of Corplex Plastics UK Ltd, its parent, subsidiaries and/or affiliates.
Correx® sheet sizes and technical information
Correx® board sizes
| Thickness | Across Flute | With Flute | Weight | Price |
|---|---|---|---|---|
| 3 mm | 1250 mm | 1800 mm | 450 gsm | 50: £10.00
100: £8.00 200+: £POA |
| 3 mm | 2500 mm | 1800 mm | 450 gsm | 50: £POA
100: £POA 200+: £POA |
| 4 mm | 1250 mm | 1800 mm | 700 gsm | 50: £12.50
100: £10.50 200+: £POA |
| 4 mm | 2500 mm | 1800 mm | 700 gsm | 50: £POA
100: £POA 200+: £POA |
| 5 mm | 1250 mm | 1800 mm | 1050 gsm | 50: £16.40
100: £14.45 200+: £POA |
Available colours and printing
Blue
Blue
Green
Red
Yellow
Black
Grey
White
Please note:
4mm/700 gsm material is only available from stock in white, black, blue and green.
5mm/1050gsm material is only available from stock in green.
Simple one/two colour printing is available – please enquire for further details.
Material characteristics
Correx® material typically provides the following characteristics:
- Softening temperature (BS2782: 102D ISO 1306) 85°C.
- Crystalline melting point 160 – 175°C.
- Flash ignition temperature c a 350°C.
- Self ignition temperature ca 380°C.
- Calorific value 11000 cal.kg.
- Specific heat 0.46 cal/gm°C.
- Limiting oxygen index (ASTM D 2863) 0.174 – 0.180.
- Burn rate (FMVSS 302) 5.3 – 8.2 cm/min.
Temperatures/Environmental performance
The ethylene-propylene copolymer used to manufacture Correx® sheet provides a high level of impact resistance at normal operating temperatures, ranging from approximately 0 °C to 85 °C.
Above 85 °C, the material starts to soften, increasing impact performance but at the same time reducing structural strength. The material will continue to soften until approximately 140 °C, at which point the polymer begins to melt.
At temperatures below 0 °C, Correx® sheet becomes more rigid but also more brittle.
At -18 °C, the impact strength is reduced by approximately 10%. No measurements are currently available for the impact performance of Correx® sheet at temperatures below -18 °C, but other industries routinely use polypropylene copolymer at temperatures down to -30 °C (e.g., for ice cream tubs).
At temperatures around -30 °C, you can expect the Correx® structure to remain intact so long as users do not subject the product to unreasonable treatment. You can expect Correx® boxes to perform well in environments such as on shelves, single-stacked.
Benefits of Correx® sheet material
By sourcing your Correx® material from us, you can expect the following benefits:
What our customers say...
We would definitely recommend GWP – they provide quality materials and professional service.
Shane Lloyd | Transport Manager | Veka Recycling
We have purchased a few times now, no issues and informed from the point of receiving my Purchase Order to delivering to us. Good communications, keep up the good work!
Melvin Miller | Schiedel Chimney Systems
An efficient, friendly, easy to deal with team of people. We have stayed with GWP because the service is so good. The team is friendly, hold the items needed in stock and the pricing is competitive.
John Wayman | Managing Director | Bondline
FAQs
What is Correx® sheet?
Correx® is an extruded, twin-wall board manufactured from Polypropylene. Commonly referred to as fluted or corrugated plastic (and sometimes even plastic cardboard), it is a surprisingly durable yet lightweight sheet material. It is suitable for a wide range of applications, including signage, surface protection during construction, permanent formwork, and returnable transit packaging.
Is Correx® sheet waterproof?
Correx® sheet is completely waterproof. This property makes it suitable for both internal and external applications. Besides this, Correx® has high strength relative to its weight, resistance to most chemicals, oils, and grease, and is easy to clean.
What is the difference between Correx, Coroplast, Corflute, Twinplast, etc.?
In essence, Correx®, Coroplast, Corflute, Corex and Twinplast are all different names or brand terms for the same corrugated plastic material. Whilst there are some minor performance variations between these, they are all essentially the same product.
Are Correx® boards recyclable?
Correx® boards are recyclable at the end of their usable life, but typically require processing at specialist recycling centres. The general rule is that if the recycling plant accepts plastic straws, it can also process Correx® material.
Is it possible to print onto Correx® sheets?
It is possible to print on Correx® and most corrugated plastics. The nature of the surfaces means that standard printing equipment (and most inks) can produce crisp, impactful graphics and detailed text.
Why GWP Correx®?
Extensive stockholding
As the UK’s largest independent converter of Correx® material (by volume), we have an extensive stockholding of material available on short lead times.
UK Correx® experts
Our team of designers, product experts, and production staff has extensive specialist knowledge of Correx® and similar plastic sheet materials.
Competitive advantage
Alongside material, you can source a huge range of custom fabricated Correx products, available as part of a confidential trade agreement for resale.
A business you can trust
Although continuing to operate as an independent business, GWP Correx® is now part of Macfarlane Group PLC – the UK’s largest packaging distributor.
Disclaimer: Application images on this page may have been enhanced or created specifically to illustrate a products features and/or potential uses. Please see our content policy for further details.
Quotes, technical info and advice
Speak with our UK-based Correx® experts
The information on this page has been collated, checked and approved by several of our plastic material experts:
