The term “bioplastics” is actually used for two separate things:
Bio-based plastics :
vThis means that the material is (partly) derived from biomass or plants ie which are renewable sources.
vBiomass for plastics are usually from corn, sugarcane, or cellulose. Therefore this is not fossil fuel based, hence it is also called as Green material
Biodegradable plastics :
vPlastics that can be completely broken down by microbes in a reasonable timeframe, given specific conditions.
vMicro-organisms in the environment are able to convert biodegradable materials to natural substances such as water, CO2, and compost without additives within a certain time and at a particular location.
NOTE: Not all bio-based plastics are biodegradable, and not all biodegradable plastics are bio-based.
Bio-based plastics : “Beginning of Life” of plastics
Biodegradable/compostable: “End of life of plastics
What does compostability mean ?
Fragmentation – first step in the biodegradation process, in which organic matter is broken down into microscopic fragments
Biodegradability – Complete microbial assimilation of the fragmented product as a food source by the microorganisms in the disposal environment
Compostability – Complete carbon assimilation within 180 days in an industrial compost environment.
Bio-based And Bio Degradable: These are usually materials
made from cellulose acetate (plant-based) or lactic acid-based
blends (or pure starch blends) and are used for primarily single
use plastics like cutlery or some applications across pens/toys etc.
Some examples are :
PLA : Poly Lactic Acid
PHA : Poly Hydroxyalkanoate
And other plant based cellulose compounds
They are completely biodegradable as per the standards specified
under ASTMD6400 / EN13432
Oil-Based and Bio-degradable : Traditional oil based polymers
which are biodegradable have existed for many years and usually
being used for applications such as stents, tissue engineering
and other biomaterial applications.
Some examples are :
uPBAT, PBS and PCL
CIPET: BIODEGRADABILITY TEST REQUIREMENTS
Ultimate aerobic Biodegradation ( the breakdown of organic contaminants such as carbon by microorganisms when oxygen is present) must be more than 90% within 180 days
After 12 weeks not more than 10% of the product’s original dry mass should remain when passing through 2mm sieve
3. Ability of compost to support plant growth:
The Percentage of Seed germination should be greater than 90% for 2 different plant species.
Further in order to conserve the natural resources, landfill space and energy, United Precision Plastics believes in “Reduce Reuse Recycle” and accordingly we have upgraded our products.
We are now in possession of the GLOBAL RECYCLED STANDARD (GRS) certificate for recycled products.