Degradable Plastics Just May Offer a Better Solution Than a Bag Ban!

We at Greenertowns.org are pleased to see the increased attention being paid to eliminating plastic bag pollution.  Over 6 billion plastic bags are littered each year, enough to circle the globe 63 times.  As awareness rises, an increasing number of you in towns, states, and municipalities are trying to solve this problem for your citizens.

Clearly, the world needs an alternative to regular 63 timesplastic bags.   Plastic bags take 400+ years to degrade, they emit large amount of Greenhouse Gases in production, they are manufactured  from  precious oil or natural gas, they don’t burn well, and they release large amount of greenhouse gases when incinerated.  It’s time to move to alternatives  to carrying our groceries home, and we can do better.

Many communities have considered bans of all plastic or carry bags. In our opinion, this doesn’t solve the problem, especially since there are better solutions that do not inconvenience consumers or add costs to retail sales.  Fortunately, there is also a growing interest in alternatives to plastic bags, and a resulting proliferation of products targeting a solution to plastic bag pollution and offering alternatives to consumers and retailers.

Today, various compounds are available to fit the needs of different communities.  These include:

1: Compostable bags, certified under ASTM D-6400 standards.    ASTM D6400 – 12 is the “Standard Specification for Labeling of Plastics Designed to be Aerobically Composted in Municipal or Industrial Facilities”.  These bags are certified to biodegrade, but only in certain controlled conditions.  Although they are the “granddaddy” of alternative solutions, they are no longer the best alternative for communities. They will not necessarily degrade in a reasonable time if littered or lost, and they are expensive.

2:  Marine degradable bags certified under ASTM 7081 standardsASTM D7081- 05 is the ” Standard Specification for Non Floating Biodegradable Plastics in the Marine Environment “.  This certification is for plastics that can bio-degrade under the marine environmental conditions of aerobic marine waters or anaerobic marine sediments, or both.  These alternative products tend to be expensive, and are difficult to manufacture.

3: Oxo-biodegradable bags certified under ASTM 6954 standards.  AS
TM D6954- 04 is the “Standard Guide for Exposing and Testing Plastics that Degrade in the Environment by a Combination of Oxidation and astm logo
Biodegradation”
.  Oxo- biodegradable bags degrade from exposure to oxygen.  By adjusting the amount of additive used, the time to degrade can be adjusted.   Some of these may leave a toxic residue.  If you are looking at this solution, pay attention to the reactive agent involved.

4. Anaerobic degradable bags under ASTM 5511ASTM 5511 is the “Standard Test Method for Determining Anaerobic Biodegradation of Plastic Materials Under High-Solids Anaerobic-Digestion Conditions”.  Anaerobic degradation does not require oxygen.  Bags made with these materials can degrade if buried in a landfill. This is a viable solution, but are expensive.

5: Photodegradable bags certified under ASTM 5272 standards.  ASTM D5272 – 08 is the “Standard Practice for Outdoor Exposure Testing of Photodegradable Plastics” .   Photodegradable bags degrade when exposed to ultraviolet rays from the sun.  We believe that this is the best solution for most communities.  They will degrade if littered or lost, are non-toxic, and the materials can be recycled with other plastic bags without damaging the recycle stream.  They also can be manufactured for the same cost as traditional plastic bags.

GXT Green (www.GXTgreen.com) is a company that offers a full complement of plastic replacement products that can meet any, or all of these various standards.  The most common, and best solution, according to them, is the photodegradable bags.  Their ECOgrade bags accomplish the goal of environmentalists to avoid litter (they photodegrade from sunlight if littered) and mitigate risk to fish and wildlife (they will degrade from sunlight even in the water, and they are non-toxic).  Towns such as Saco Maine, which is very environmentally conscious, and the Country of India, which has a major litter issue, have embraced photodegradable bags as an alternative to plastic carry-bags.

The team at GXT Green has offered to provide samples and education to any community that would like to learn more about options and alternatives.  They are passionate about this subject. Their ECOgrade photodegradable bags have won many awards for their innovation and positive impact on reducing environmental impact.  If you would like to learn more, or receive a sample of the ECOgrade photodegradable bag, please contact Michael Vanin at info@gxtgreen.com, and he will be happy to help you out.

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