Sun Packaging have been in the packaging industry for over 45 years; we are the experts in bespoke packaging solutions.

Photography Hoober. Content copyright Sun Plastics Ltd.


Mail order

We're moving ever closer to a totally online world, and online shoppers are looking for a fantastic shopping experience. Your parcel packaging is the first line of this experience.

Compostable bags

It’s time for change in our packaging habits. It’s time to stop sending plastics to landfill. We’re now creating carrier bags that are totally compostable.


Secondary to the external transit packaging, the bespoke box gives your clients added assurance of a beautifully packaged purchase, along with protection and peace of mind.

Paper Mailers

PAPER bags

Alternative to plastic mailing packaging, paper mailers are becoming popular. Biodegradable, affordable, strong.


The high street is still the place to get your brand noticed. With the UK 'carrier bag tax' an important factor, our expertise will guide you through the options available.


Sugar Cane derived polymer, totally sustainable, totally recyclable, and carbon neutral. Making a change from crude oil polymer to a sustainable alternative is here, and affordable.

Striking White/Black CoEx Mailer, Flood printed and reversed out white design

Striking White/Black CoEx Mailer, Flood printed and reversed out white design

Don’t be dull - go branded!

We’ve been making mailing bags for over 20 years now. In the early days, the only option was the ‘bog standard’ plain grey mailing bag. It’s certainly stood the test of time, we’re sending more goods than ever out via e-commerce, and our standard grey mailers are still one of our best sellers.

Times move on, and Sun Packaging now offers a truly bespoke, professional design service, from initial idea through to completed product delivery.

Why go for bog standard? We can supply any colour, printed with your design (we can also design from scratch too!), starting at just 500 bags! We will also advise on protective accessories where required, and the most eco-friendly options available.

We’re now a leading supplier of some of the most striking and best quality strong bespoke mailing bags, across all types of e-commerce. Clients are turning to us for our 40+ years expertise in the industry, where we can offer ideas on design and specification, resulting in a cost effective and positive customer delivery experience.

We believe that your clients’ purchase and delivery experience is enhanced upon the delivery of their order. The receipt of goods not only requires a timely delivery, but one of striking professional design and protected transit packaging. This is where we can help. Look at some of our previous work below, and contact us for further information and samples.



Carry Handles

Process Print


Bubble Lining

Matt Finish


Green Polythene - 100% Sustainable

What is Sugar Cane Polymer?

Sugar cane polymer is a totally renewable, totally recyclable material, now available for manufacture into many types of polythene packaging.

Sugar cane plant is grown around the world for commercial use. During the processing and refining of this, ethanol is extracted. This ethanol is used to create a sugar cane based pellet that has captured 2.5kg of co2 for every 1kg of pellet produced. Taking into account transportation and manufacture of plastic products, GreenPolythene is a carbon neutral product.

cycle of SC.jpg

More Information

It's become increasingly clear that biodegradable plastic is not the eco-friendly solution to reduce our plastic pollution problem around the world. Not only can biodegradable plastic not be recycled (in a re-processing plant); when it degrades, it breaks into tiny pieces which, if it finds its way into the oceans, seriously affects marine life.

Ethically, polythene producers now turn to a viable alternative polythene product that's not only environmentally friendly, but also suitable for the recycling mix and for subsequent reuse. Certain products require polythene due to the nature of the protection required, rather than labour intensive paper and card. The answer is GreenPolythene. 

Sugar cane processing results in a waste by product, of which ethanol is used to create a polymer that’s bio-based rather than oil-based (such as crude oil based polythene). During the growth of the sugar cane, the natural process of photosynthesis sees carbon captured. Initially, this raw material is carbon negative. As sugar cane is obviously a plant, it's totally renewable and won't deplete fossil fuels (such as crude oil, used for standard polythene), which is of enormous environmental benefit.

The production process inevitably generates carbon through factors such as manufacturing and transport, which means that by the time the bio-based polythene is produced it is actually carbon neutral. The Carbon Trust recently accredited an example of sugar cane based polythene bags as carbon neutral, confirming that it’s possible to nullify the effect of carbon emissions.

It’s worth considering some additional key points. The UK uses some 1 million tonnes of polythene films and bags every year. Using fossil fuel polymers to meet this demand costs the planet 2.6 billion tonnes of CO2 annually. By widely implementing GreenPolythene this figure could be drastically reduced.


Hello. Compostable bags are here.

100% Compostable Carrier Bag

100% Compostable Carrier Bag

It’s time for change.

Compostable bags have been around for a little while. We most commonly use them for our food waste.

Now, Sun Packaging are able to offer the same fantastic 100% compostable and biodegradable material in shopping carrier bags. Still half the cost of similarly sized paper bags, compostable material is a viable and eco-friendly alternative to plastic shopping carrier bags.

Once the bag has reached it’s suitable end of life, simply put it in your garden or food waste bin. If you have a home composter, it can also go in here. Remember, these bags cannot be recycled, so don’t put it in your plastics recycling.

Made from potato starch, these bags are certified home compostable, and complies with European standard EN13432.

If you’re ready to make the change to compostable carrier bags, contact us on 0800 032 5402 or email us.

More Information

The RSPB, National Trust, and the Guardian Newspaper have all chosen to stop using polythene wrap in favour of this compostable potato starch alternative. Here are 3 ways you could dispose of it…

  1. Add to a well-maintained home compost heap

  2. Put it in your garden waste bin

  3. Use the bag to line your food waste caddy

The majority of councils provide garden waste bins, but if you are unsure please check with your local council’s own advice.
Please do not place this bag in your recycle bin. If you are unable to dispose of it in a compost heap or garden waste bin, please pop it into your domestic waste.

This product is certified home compostable. Complies with European standard EN13432. Of course this does come at a cost and prices will naturally be more than our normal bags, but we feel this is a viable alternative to oil based polythene with the best green credentials to back it up.

Currently plastic products are being targeted by the governments and environmental institutions so we are constantly being asked for viable alternatives and we feel potato starch carrier bags really are.

Frequently asked questions

What is the product and how is it made?
Bioplast 300 is a plasticiser and GM Free material derived from potato starch, suitable for domestic and industrial composting.

How should I dispose of it?
Put into your home compost bin, or food waste caddy, or green waste bin.

How long does it take to compost?
Typically within 360 days for home composting or within 180 days for industrial composting.

How does the process work?
The composting process starts after contact with micro-organisms, when humidity level is up to 80% and temperature over 25oc.

Are there any contaminants left behind?
At least 90% of the material will convert to co2, the remainder is converted to water and biomass.

What happens if it is put into landfill?
Bioplast 300 is not intended for landfill, although it will degrade eventually depending on the conditions.

Will it dissolve in water?
No. Although pure starch is soluble, once processed, the Bioplast 300 material is not.

Does Bioplast 300 contain allergens?
There are no allergens in Bioplast 300, and it complies with the EU 2003/89 directive.

Compostable Carriers

How should it be stored?
Store in normal dry warehousing conditions away from direct sunlight and above freezing temperatures.

What is the minimum/maximum thickness I can buy?
20mu minimum and 60mu maximum.

Can you print on Bioplast film?
Yes the film is suitable for print, it should be noted that ink coverages must be within specified parameters.

Is it suitable for food use?
Yes. Food grade and food contact.

Do you have any certifications?
TUV - OK Compost Home
BRC Accreditation - Grade AA

Are there any limitations we need to consider?
Bioplast 300 remains the responsibility of Alfaplas to end of life. Any additional processes must be disclosed and discussed.