Leetha Bio Cups
Most paper cups labelled as recyclable or compostable contain either a plastic or a PLA liner.
Plastic coated cups are not compostable and cannot be easily recycled while PLA lined cups can only be compostable under controlled conditions and are rarely recycled. In most cases, they end up in landfill or are washed into waterbodies.
Leetha Bio Cups does not contain the typical plastic or PLA liner and are:
Leetha Bio Cups : Frequently Asked Questions
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 are very few of these in the world and almost 90% of used paper cups end up in landfill and are not recycled. That means LDPE cups cannot be recycled by most paper mills.
Are Leetha Bio Cups biodegradable?
Yes, Leetha Bio Cups are biodegradable. As per ASTM D 5511 and ASTM 6400 Standard tests conducted on the cups by Intertek and ISO 17088, Leetha Bio Cups are compostable in an industrial composter and even in a home compost. That means it will be eaten up aerobic bacteria and anaerobic bacteria. Certificates and test studies are available and could be sent on request.
So, does that mean you can throw Leetha bio cup in your backyard 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 a flowerpot or wherever 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 both cups in water for 72 hours. You could peel of the LDPE lining from the inner wall of the cup whereas in Leetha Bio Cups no such films can be found.
Alternatively, you could expose the cup to an acid. PLASTICS DON’T DISSOLVE IN ACID.
For ACID testing methods please check the link
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.
OK! Leetha has the certificates, but do have any visual proofs of cups biodegrading in natural weather conditions?
Check out the link.
Are Leetha Bio Cups microwavable and are there any certificates to prove the same?
Yes Leetha Bio Cups are microwave safe and migration test conducted by internationally accreditation agencies certifies the same.
Till what temperatures can Leetha Bio Cups withstand?
It can withstand up to 100 degree centigrade (coffee is generally served at 70 degrees).
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. These cups are fully biodegradable in an open landfill as per ASTM D 5511 by Intertek ASTM D 5511 testing process done with AEROBIC BACTERIA. (Aerobic bacteria are bacteria that uses oxygen as an electron acceptor to break down organic compounds.) Our cups biodegradation level was 74.8% on the 28th day and 94.01% on the 52nd day.
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 footprint generated during biodegrading process in an industrial composter is more than the energy required to manufacture LDPE coated paper. That means running an industrial composer is harmful to the nature and recycling or natural biodegradation is the ideal solution.
How thick is this coating?
The coating thickness is under 2 grams per square meter. This implies that the coating is less than 1% of a standard hotcup.
How thick is plastic film (LPDE)?
Plastic film is usually laminated 15 to 20 grams per square meter.
What is so special about this dispersion coating that makes it biodegradable?
LDPE (plastic film) is made of complicated molecules, their molecular length and molecular weight is very high. Our dispersion coating molecule has very low molecular length and weight which makes it easier for microbes to feed on.
This is similar to natural rubber molecules (polyisoprene C5-H8) which is naturally degradable.
How is it different from other dispersion coated paper cups?
Leetha has mastered the technology of achieving perfect barrier proofing and heat sealablity with just 2 grams of coating. Other dispersion coated (aqueous coated) cups mostly have a minimum 6 grams coating which is almost like a film.