I commented yesterday on the ridiculous study commissioned by the American Christmas Tree Association that claims PVC Christmas trees are better for the environment than natural trees. A study earlier this year by a consulting firm in Canada makes the opposite conclusion. ”The results for this impact category are clear: the natural tree is better than the artificial tree considering an average life span of six years for the artificial tree. This conclusion holds true for resource depletion as well,” state researchers for Ellipsos of Montréal, Quebec. If someone kept an artificial tree for a very long time, “ideally over 20 years”, they could reduce the impacts of the artificial tree, says Ellipsos.
If you like to drive deep into the country to chop down your own tree, then you could be better off with a PVC tree, strictly from an environmental lifecycle analysis, says the study. I say, go into the country, have a great time with your kids, and chop down your own tree. Deposit the tree at a composting site when done. I didn’t do any research, but how is that worse than a PVC tree made in China?
Thanks to my colleague Don Loepp at Plastics News for citing my blog post, and pointing out the Ellipsos citation in one of the Plastics News comments.
New versions of BASF's Ecovio line are both compostable and designed for either injection molding or thermoforming. These combinations are becoming more common for the single-use bioplastics used in food service and food packaging applications, but are still not widely available.
The 100-percent solar-powered Solar Impulse plane flies on a piloted, cross-country flight this summer over the US as a prelude to the longer, round-the-world flight by its successor aircraft planned for 2015.
GE Aviation expects to chop off about 25 percent of the total 3D printing time of metallic production components for its LEAP Turbofan engine, using in-process inspection. That's pretty amazing, considering how slow additive manufacturing (AM) build times usually are.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This radio show will show what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.