- Are Leetha Bio-Cups made using PLA Lining?
No, Leetha Bio-Cups are made using water based acrylic dispersion barrier which is impregnated on to the paper in very fine quantity.
- Are Leetha bio-cups Recyclable?
Yes, Leetha Bio Cups are 100% recyclable, it can be directly fed into a pulper and can be used to make recycled paper.
- Can ordinary LDPE coated paper cups also be recycled?
Specialized machinery are required to separate LDPE film from cup paper unfortunately there very few of these in the world and almost 90% of used paper cups end up in land fill and are not recycled and that means LDPE cups cannot be recycled by most paper mills.
- Can PLA coated paper cups be recycled?
PLA coated cups cannot be recycled, it's even harder to recycled PLA coated cups than plastic coated cups since the coating thickness is almost 30% more
- Are Leetha cups bio degradable?
Yes, Leetha cups are bio degradable, As per ASTM D 5511and as per ASTM 6400 Standard test conducted on the cups by Intertek. Leetha Bio cups are compostable in an industrial composter and even in home compost .and that means it will eaten up aerobic bacteria and anaerobic bacteria Certificates and Test study are available and could be sent on request.
- So does that mean you can throw Leetha bio cup in your back yard and degrades naturally?
- How can I check if leetha bio cups are compostable in natural weather conditions?
Just bury it in your backyard or in your flower pot or where ever you have wet soil and check after 30 days. You will not find any residue .as per international standards a product is termed as biodegradable if it degrades up to 90 % in 6 months' time
- How can I check if Leetha bio cups are recyclable at home and that ordinary plastic cups are not?
Just immerse it in water for 72 hours and you could peel of the LDPE lining from the inner wall of the cup where as the Leetha bio cups we will not get any such films or you could put the cup in any acid PLASTICS DON’T DISSOLVE IN ACID.
For ACID testing methods please check the link below.
- Are Leetha Bio cups food safe and are there any certificates to prove the same?
Yes Leetha bio cups are food safe and migration test conducted by internationally accreditation agencies certifies the same.
- Are Leetha Bio cups microwavable and are there any certificates to prove the same?
Yes Leetha bio cups are microwavable safe and migration test conducted by internationally accreditation agencies certifies the same.
- Till what temperatures can Leetha bio cups withstand and what temperatures can PLA coated cups withstand?
It can withstand up to 100 degree centigrade PLA starts to melt at around 65 degrees (coffee is generally served at 70 degrees)
- Will PLA coated cups degrade naturally?
No , PLA is a polymer made from high levels of polylactic acid molecules. For PLA to biodegrade, you must break up the polymer by adding water to it (a process known as hydrolyzing). Heat and moisture are required for hydrolyzing to occur. So if you throw that PLA cup in the trash, where it will not be exposed to the heat and moisture required to trigger biodegradation, it will sit there for decades or centuries, much like an ordinary plastic cup.
- So why PLA coated cup termed as compostable even when that is not compostable in natural weather conditions?
PLA coated cup is compostable in an industrial hot composter and will not bio degrade in natural weather conditions. PLA as naturally compostable is a misnomer.
- What is an industrial hot composter and what happens to PLA coated cups in there?
Industrial hot composter is an industrial bio-degrading facility where heat and moisture is provided, when required heat at around 60 degrees and required moisture is provided, biodegradability is triggered, then there-after PLA coated cups and lids would degrade and be eaten up by microbes.
- So do we have enough industrial compostable facility in the world?
There hardly any in countries like India and china and UK has just few and that does not even satisfy 5% of the total requirement.
- Does the Cup require a Composting facility? Does it have to be Industrial Composting or Home Composting?
Yes, It is home compostable and doesn't require an industrial composting facility like the PLA and Yes, these cups gets fully bio degradable in an open landfill Let me just make it a little more elaborate These cups are subjected to tests as per ASTM D 5511 by Intertek ASTM D 5511 is testing process done with AEROBIC BACTERIA . (Aerobic bacteria are bacterias that uses oxygen as an electron acceptor to break down organic compound ) Our cups biodegradation level was 74.8% on the 28th day and 94.01% on the 52nd day Aerobic bacteria are the bacteria that is generally active in a home compost.
- On how does it perform in an industrial composter?
It was also subjected to Anaerobic bacteria testing (Anaerobic bacteria are bacteria that does not use oxygen as an electron acceptor to break down organic compounds ) it generally uses nitrates iron sulphate etc. Our cups biodegradation level for anaerobic biodegradation (without oxygen) was 91.85 % on the 75th day.
- Are Industrial composting facilities really a solution to the plastic menace?
The amount of energy required to run the industrial composting facility and the amount of foot print generated during bio-degrading process in an industrial composter is actually more than the energy required to manufacture LDPE coated paper and that means running an industrial composer is harmful to nature and recycling or natural biodegradation is the ideal solution.
- What are the other practical difficulty in PLA cups and lids and how does Leetha Bio-cups
stand up as a solution?
Collection of sorting of waste is a practical problem , used PLA cups has to be separately collected in order to be taken to an industrial composting site. If it goes to the land fill it will sit there just as any other PE coated paper cup that means "PLA WASTE" marked trash cans has to be kept at public locations along with other trash cans.
Public need to be educated on PLA and so that they put PLA cups and lids in "PLA" marked trash cans.
Since Leetha Bio cups are naturally biodegradable no separate trash cans are necessary and public can go one with their natural way of life.
- Does PLA cups and lids emit harmful gases when burned?
YES PLA trash if burned emit toxic gases known as VOC's (volatile Organic Carbon).
- Are PLA coated cups microwave safe?
No PLA coated cups are not microwave safe it melts at 65 degrees.