Bio-based bags/“green” bags.

There are currently 3 different types of “green” bag: Bio-based, biodegradable and compostable bags.

Facts about bio-based bags:
Typically made from sugar cane, potatoes or corn.

Bio-based plastic, often called bioplastic, is chemically identical to “traditional” plastic, which is derived from fossil fuels, typically oil. In nature, the biodegradability of both types of plastic is identical. Over time, they end up as microplastics and finally nanoplastics which persist in the environment for countless years. Bio-based plastics (bioplastics) are synthesised from biomaterials such as sugar and corn, rather than fossil fuels.

Bioplastics can be a good solution when looking exclusively at the climate challenge, since the greenhouse gas emissions that occur during the combustion of bioplastics are fixed in new biomaterials. In terms of biodegradability in nature, nothing has been gained by using bioplastics rather than oil-based plastic.

If you choose this type of packaging you need to know the above, and that:

– The content of the bio base can be very variable – what percentage is truly bio-based?
– If the bags are 100% bio-based, the stability of the biofilm for the production of the bags is surprisingly poor.
(After a few months, the biofilm becomes sticky and the product/bag loses all technical functions.)
– The bags are not 100% recyclable, which the EU in 2018 determined that all plastics should be by the year 2025.
– Some of the bags cannot be used for food products.

Facts about biodegradable bags and compostable bags:

https://www.plymouth.ac.uk/news/biodegradable-bags-can-hold-a-full-load-of-shopping-three-years-after-being-discarded-in-the-environment

The bags are made of regular PE plastic with an additive to break it down. Often, handles, zippers, etc. do not biodegrade.
The biodegradation process starts during storage in direct light or heat. This brings major requirements with regard to proper storage 
and handling, as the bags will otherwise break during use.

So-called biodegradable or compostable plastic, on the other hand, differs chemically significantly from
traditional plastic and CAN be broken down into CO2 and water under controlled conditions with the right temperature, oxygen ratio, light, microorganisms etc.

The optimal conditions for complete biodegradation are only found at industrial plants!
Using biodegradable/compostable plastic is thus only a good solution if you ensure that the material is collected and handled in the correct facilities.

These types of plastic are therefore NOT rapidly biodegraded in nature, as conditions are not optimal for complete biodegradation.

If you choose this type of packaging you need to know the above, and that:
The stability of the film for the production of the bags is poor: the biofilm will quickly become sticky and its technical properties will disappear.
– The bags are not 100% recyclable – they can not be remelted.
– Some of the bags will not be approved for use with food products.

Conclusion:

According to the EU’s agreements of 2018, all plastic materials MUST be 100% reusable (recyclable) by 2025 – i.e., various bio-xxx biofilms will, as a result, be banned.

Contrary to popular belief, all of these biofilms are neither 100% biodegradable nor 100% recyclable; however, they end up as micro-particles, in foods and in the food chain in nature.

Large sums have therefore been spent in recent years by the leading plastic producers in manufacturing multilayer films, so-called laminates in PE/PET, which combine 100% recyclability with optimal packaging of products.

Joka recommends plastic bags made from 100% recyclable virgin PE and PP, which we already use for our Minigrip® zipper bags today. Minigrip® will not be produced as bio-based bags for the obvious reasons mentioned above, and primarily because Minigrip® is and will remain approved for food and will remain the quality product it has been known as for almost 60 years.

We do, however, carry certain types of bio-based bags, e.g. laminated bags in laminate and paper, as we can vouch for the fact that production-wise, they are on par with ordinary laminated bags, and are environmentally better than current ones. See special products – Doybag.   

Green PE bags with zipper is also available from us – contact us for more information: info@joka.dk

All plastic must be properly treated and if the plastic is 100% recyclable, it must be remelted or properly burned. Doing this is the most environmentally-friendly solution currently available!

Our mission, and what we believe in, is to “educate” consumers/our customers to collect and process plastics properly, as this is presently the only sensible and responsible solution.

We carefully examine all new information, and our customers can be sure that we don’t sell anything that is “hot air” or which is actually more harmful to the environment than existing products.