Co-ex mailing bags is the short name for Co-extruded  security mailing bags. They have a black internal layer of LDPE film and this is extruded with a coloured outer layer. This black inner layer of film blocks light and obscures the contents from visibility.

ESC is proud to offer British made mailing bags as well as European and Far East  production.

Our mailing bags can be up to 100% recycled PCW (Post Consumer Waste) film and they can be supplied with one or two sealing glue strips, with or without carry handles. We are also excited to advise new compostable mailing bags are in final stage development and are available now. 


Flexo printed with rubber printing plates for small order volumes or gravure engraved cylinders for larger orders.

We use water based pantone inks and can even offer CMYK printing which is mostly suited to larger order sizes due to the associated set up costs. 

With all flexographic printed products, each colour printed and side printed will require a  rubber plate to be made. Each plate carries a charge. This is why adding extra ink colours onto a flexographically printed bag costs extra up front. 

Unlike litho plates, we keep the flexo rubber plates for re-use so the upfront set up charge only applies to the first order. The plates keep well and can be used for many years to come. 

The screen ruling  for designs with tints and tonal elements is 55 LPI so shaded areas are best kept to a minimum as the dots can be quite visible to the naked eye and are not fine like digital or litho prints. 


The most popular size is 30cm wide x 40cm high plus 6cm flap with a self seal glue strip. We have 4 popular sizes possible in the UK in small volumes. Larger orders benefit from fully bespoke sizes.



The bags can be tailored to suit your exact needs and include extras such as:


From 500 bags, although 1000 bags is a super price point to start at.


Our standard lead time is 2-3 weeks on orders up to 10,000. For larger orders over 10,000 we can also import from one of our approved partner factories in Europe, offering great savings and more choice. This usually takes 6-8 weeks. 


We aim to include a minimum 30% recycled content in all our films, as standard, and we can supply up to 100% Post Consumer Waste (PCW) recycled LDPE too for those clients keen to make a positive impact on our planet.

The inks used are water based. 

UK made bags offer a low carbon footprint due to transportation savings. Imported bags arrive via truck or sea into our local port, Grangemouth, and we try to consolidate orders so they don’t travel alone. This helps to keep the carbon footprint as low as possible.


All prices are calculated individually based upon your requirements.
We don’t have a price list.
However, as an example of pricing please see the illustration below.

W30cm x H40cm + 6cm flap 250 gauge (60 micron) Co-ex Black / White  mailing bag with single glue strip.  Printed 1 colour 2 sides 

This includes delivery to 1 mainland UK address and all your set up artwork costs. There will be a one off charge for printing plates at approx £70+vat on your first order. 

Note that as with all flexographically made products, there is a 10% tolerance allowed on the final quantity made and we always charge for the exact number produced. 

Please fill in the enquiry form below and we will be in touch shortly.

Longer deadlines will allow ESC to provide a reduced price whereas immediate deadlines will result in higher costs.