Greener Polythene

Plastic bags have had a bad press recently with Government driven campaigns targeting the millions used in supermarkets, many of which are not disposed of responsibly and with due care, causing a large percentage to end their life in the sea, hedges and other areas. This has an unsightly and undesirable effect on the environment as well as many of the natural inhabitants of these areas. This of course is not the fault of the humble plastic bag, but the result of irresponsible end users. 

Of course, every bag has the potential to be recycled on one or more occasion, however it needs to be in the hands of responsible, environmentally aware individuals who make the effort to RE-USE it as many times as possible!

Polyethylene is a stable compound that is nontoxic.
The bulk of supermarket carriers are made from extra thin Virgin-First use High-Density PE and are imported from the far east with accompanying negative carbon footprint.

When purchasing DURASAK carrier bags the purchaser can be confident that, they are manufactured in England from Low-Density PE and are made for bespoke multi-trip use. All our carriers are re-useable and from the results of tests undertaken at our Northern Distribution Centre in Lancashire all our bags will carry 5kgs weight without splitting or tearing.                                                                                                                                  
All our carrier bags supplied were made with degradability – these are suitable for carriers

that are needed with a shorter life-span and will commence to degrade in daylight and  not just when in contact with certain bacteria. We are also now able to supply recycled quality carrier bags as well as bespoke bags that are durable enough to be re-used many times.


To cause this compound to degrade a special masterbatch polymer is added and blends with the base PE. The addition of this poly batch will produce a photo chemically and thermally degradable film. The recommended shelf life if stored indoors is 6 months - therefore this should not be used for long-term stock holding purposes. Once exposed to UV light the polyethylene starts to degrade and continues even when out of UV light (with thermal factors also contributing to this process).

When Polyethylene degrades down to a fine powder the bio-degradable process kicks in, the final results being carbon dioxide gas and water plus minute amounts of inert mineral material which is non-toxic. All degraded polyethylene residues are nontoxic.

Environmental Innovation

Our outer team work hard to keep at the forefront of new technology, always looking to provide the protection that you need, without it (literally) costing 'the earth'. Our recommended polythene is 100% recyclable.  Instead of going to landfill, it can be recycled back into polymer and re-used.


We believe the future is carbon positive! *DURAGREEN, is our environmentally friendlier polythene option film that helps make the world a better place. This organic based polymer is a renewable alternative to fossil fuel derived polyethylene. Over 20% of the material used to manufacture the *DURAGREEN bags are sourced from bio-renewable sources. The clever *DURAGREEN complies with the standard for compost ability EN 13432 and reduces the level of greenhouse gas emissions and Durasak can now offer you this new innovative renewable solution.

Deg 68

POLYBATCH DEG 86 UK is a masterbatch additive which degrades polythene under the influence of light and heat. The addition of 2 to 3 % POLYBATCH DEG 86 UK will produce a photo chemically and thermally degradable film.

Polythene containing POLYBATCH DEG 86 UK will not degrade before being exposed to UV light.

Once the polythene has been exposed to UV light, the degradation reaction will be triggered an even continues in the dark. It will be accelerated by heat.

Once the polythene has been transformed into a fine powder, many studies have shown that biological degradation will take place. The end products of biodegradation will be carbon dioxide and water, with a very small residue of non-toxic inert mineral material. Biological degradation can start when the molecular weight has been drastically reduced and when the surface area of the disintegrated plastic has been enlarged.

POLYBATCH DEG 68UK contains active metal ions embedded in LDPE. Degradation starts only after the metal ions have been activated by exposure to a UV light source.

The degradation speed is mainly dependent on:

-the concentration of POLYBATCH DEG

-the thickness of the film

-the types of resin

-the presence of antioxidants and pigments

-the temperature

-the type of exposure


Carrier: PE

Specific Gravity(g/cm):+0.92

Bulk Density(g/l):+0.550

Moisture content (%): <0.15

Colour: Light Brown Pellets

Press Release

“In response to growing interest in the subject of Degradable Plastics, our polymer suppliers have introduced Polybatch ®DEG 68, a highly concentrated masterbatch, which can be added to Polyethylene to catalyse degradation under the influence of sunlight and/or heat.

Polybatch ®DEG technology has been used for many years for the production of agricultural mulch films, which are required to be degraded at the end of the growing season so that they can be ploughed into the soil.

Films containing Polybatch ®DEG 68 can be stored for extended periods away from direct sunlight or heat sources.  Upon exposure to sunlight, the degradation reaction will be initiated.  It will then continue, even in the dark, and will be accelerated by heat.  Heat alone will also promote the reaction.  Tests have shown that a 50 micron Polyethylene film containing 4% Polybatch ®DEG 68 will be degraded to total embrittlement in less than 2 months when stored at 70 degrees C.  This temperature is typical of that reached in composting situations.  Higher addition rates will increase the speed of degradation.  It desired, stabilisers can be added to delay the onset of degradation. Several academic studies have shown that when the molecular weight of Polyethylene has been reduced sufficiently, it will become digestible by microorganisms in the soil and therefore become truly biodegradable.

Therefore, the ultimate degradation products of films containing Polybatch ®DEG 68 will be water, carbon dioxide and a small amount of non-toxic mineral matter. All ingredients of Polybatch ®DEG 68 are positively listed for use in food contact applications under European Directive 2002/72/EC.  There are no specific migration limitations”


Social Responsibility
Re-Use Re-Cycle Re-duce

We are a Responsible Business

We Care for the Environment We Live In