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Glass vs. Plastic.

post #1 of 3
Thread Starter 

I wanted to share with you some intersting facts I was just emailed by a company I work with. I'm just going to cut and paste it, so as not to loose content. Sorry for the weird font sizes when I cut and paste it got all zany...??

 

glass vs. plastic

 

Perception & Reality by Narelle CheneryMy journey of discoveryLike most of us, I have always assumed that glass was the better environmental

choice for our product packaging. I assumed glass required less energy to

manufacture and was less polluting than plastic, and that all plastics were toxic

and leaching. We had challenges with both our glass and plastic packaging; I

really needed to find a solution.

 

The pitfalls associated with our current glass packaging:

 

• Glass is very

heavy and therefore very energy intensive to ship around the planet• Glass is brittle and canbreak during shipping• Our current glass packaging does not dispense the entire product resulting inwasted productand frustrated customersThe pitfalls associated with some plastic packaging:• Plastic canleach dangerous chemicals into the product• Plastic ispolluting to the environment• Plastic can containI started assessing the ecological impact of both glass and plastic packaging, using four environmental parameters:toxic plasticicers such as PVC and pthalates(Greenhouse Gases)1. Energy Consumption2. Air Pollution3. Environmental Release (Waste Production) than plastic  

4. Global Warming Potential 

 

 

 

Glass consumes nearly 

3 times more energy 

than plastic 

 

 Glass produces nearly

3 times more

 

air pollution

 

 

 

 

Glass creates nearly 

3 times moreglobal warming gases

 

 

 

Glass produces40% more environmental waste release than plastic

 

The above information is summarised from the Economic Input-Output Life Cycle Assessment

by Carnegie Mellon University Green Design Institute (2007). Available from: http://www.eiolca.net

Wow! I realised glass wasn’t all it was cracked up to be. Even if no energy was involved in the transport and cleansing

of returnable bottles, returnable bottles would have to be recycled about 20 times to compete with plastics. Plastic

seemed to be a better solution, ecologically, but I still had concerns about the toxic leaching associated with it. An

ideal solution would be to find a material with none of the pitfalls, yet all of the benefits of both glass and plastic. After

researching lots of different types of packaging I found polypropylene. Could this be the answer I was looking for?

 

glass vs. plastic

 

Polypropylene: leaner, cleaner, greener

 

Polypropylene:

 

• Is manufactured from clean technologies (non-toxic)

• Does not leach harmful chemicals (no Bispenol-A, no PVC plasticisers, no Phthalates)

• Requires 30% fewer resources than other plastics

• Is extremely stable with excellent barrier properties (no leaching or outgassing)

• Is 100% recyclable

• Is lightweight (less CO2 product during transit)

• Has superior impact resistance and resilience (no product breakage during transit)

 

Hmmm... none of the pitfalls of conventional plastic, and it offered the strength and stability of glass, without the weight

and large carbon footprint. My research was getting exciting! Now I just had to overcome the challenges we were having

with our current glass packaging. Product wastage was a big problem.

After much searching, I found this new airless (vacuum technology) packaging. Oh my goodness... could it be true? It

 

dispenses in any position (even upside down!), it’s leak proof, has no metal parts (no corrosion, 100% recyclable) and

 

has a pump with automatic self-closing valves that protect the product from oxidation and prevents dry-out (those pesky

dried product plugs in the end of your pump). No product oxidation, no contamination, no product wastage, no leaking

product, no frustrated customers! And they look good too. Mission accomplished!

I’m excited to say that we’ll be rolling out our new, leaner, cleaner, greener packaging over the next few months.


Edited by organicgal007 - Fri, 21 Mar 2008 13:17:55 UTC
post #2 of 3

This thread has been moved to a wiki:  Glass vs. Plastic

post #3 of 3

Hi,

 

I am interested in the summary of the data.  How does one interpret the information there.

 

For example, I ran the model for Platic bottles and Glass containers -- however, I am not sure the resuls are very useful to me.  It comes in terms of per $1 million dollars of economic activity.  Well when it comes to environmental impacts, we need to look at the functional unit -- glass jug vs plastic jug.  Anyway, I am hoping you could help me understand how I can find this summary at the website linked.

 

Thanks.

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