Custom printed poly bags manufacturers based in Bristol and printed polythene bags UK suppliers,
Greys Packaging are leaders in UK flexible packaging companies.

>Go Green!


Greys Packaging are dedicated to minimising the environmental impact of our products. We work with Degradable and Biodegradable films and all of our polymer materials are 100% recyclable.

Degradable and Biodegradable Plastics

Degradable are plastics such as polythene and polypropylene with an added degradable additive which are predominately oil based. It contains a chemical additive which undergoes changes in its molecular make up, the large polymer molecules break down to smaller molecules. Heat, moisture and UV light start the degradation.

Oxo-Biodegradable is plastics such as polythene and polypropylene to which is added a degradable additive. This would accelerate the breakdown of the chemical structure of the plastic .The breakdown product are then amenable to conversion by micro-organisms, for which these products are an energy source or food , into carbon dioxide and water.

Hydra-Biodegradable these films are often starch based or bio based, normally made from corn. potatoes & wheat. Hydra plastics decompose under the influence of micro-organisms present in the soil and are naturally eliminated without human intervention.

Biodegradable plastics have the same properties as non degradable plastics, except they degrade into a form that is safely absorbed into the ecosystem within a certain controlled time frame. This is similar to that of natural products such as straw and leaves. Therefore the biodegradable bag will degrade anywhere in the world where there is oxygen, it will eventually degrade completely & disappear without leaving any toxic material or plastic pieces in the soil.

Using Biodegradable plastics does not compromise the quality in print, strength or appearance of our products.

FREQUENTLY ASKED QUESTIONS

Question

With what level of certainty can the timing of degradation be controlled?

Answer

As indicated elsewhere, the speed of degradability can largely be controlled by the additive package used for any particular application. The actual speed of degradation, however, is affected by the levels of uncontrollable variables - particularly heat, light and stress - to which the plastic is exposed. Higher than planned levels of these will speed up the process and lower levels will slow it down (but not stop it). For this reason, manufacturers typically build a significant safety margin into the planned degradation time so as to ensure that the properties of the plastic remain intact for the full useful life of the product in question.

Question

Do the additives or finished products need to be stored or handled in any special way?

Answer

As indicated in the answer above, a degree of care is sensible to ensure that the products are not exposed to excessive heat, light or stress. For example, degradable plastics should be stored in a cool/shaded place rather than in the open air or in a hot, sunny place. Beyond this sort of 'common sense', no special requirements apply.

Question

Is biodegradation the end result of degradation?

Answer

For d2w™ products, the answer is yes. Oxidative degradation of d2w™ polyethylene and polypropylene causes a breakdown of the molecular backbone of these plastics. The molecular chains become shorter and water 'wettable' permitting the formation of a bio-film on the surface of the plastics which allows microbial deterioration to take over.

Question

Is the plastic material in a flexible packaging product (e.g. a shopping bag) after degradation reduced to zero?

Answer

Flexible plastic packaging, by its nature, has properties that are essential to provide effective packaging of products. These properties include water resistance, flexibility and strength. The long entangled molecular chains within a polymer determine these properties. With the oxidative action of d2w™ the molecular 'backbone' collapses. The initial result is embrittlement leading to disintegration - the material can no longer be considered as a plastic. A loss of strength and then ultimately, after microbial deterioration has completed, the overall degradation process will have resulted in the creation of some H2O, some CO2, and a small amount of biomass.


Novers Hill Trading Estate | Bristol | BS3 5QY | 0117 305 2440 | 0117 953 5066
sales@greyspackaging.co.uk
Company Reg No.2402402 | VAT Reg No.G.B.520417585
Site by Flow Online | Cookie Policy | Copyright 2017 Greys Packaging Ltd Bristol UK Printed Poly Bags

Custom printed poly bags manufacturers based in Bristol and printed polythene bags UK suppliers,
Greys Packaging are leaders in UK flexible packaging companies.