Posts tagged ‘reuse’

The Purpose of Beer Bottle Bumps

Many people have noticed the small bumps on the side of beer bottles, near the base (the “heel”). They’re not just on beer bottles either, every glass bottle in my house has them, which are mostly beer bottles.

These are typically called “mold codes” or “heel codes” and there are many different ideas about what these are for, but I could only confirm one.

It is a popular notion that these bumps help the bottler know how many times the bottle has been reused. I couldn’t find any proof that they are used for this. In fact, I’m not sure how these dots would convey that information since they are made when the bottle is molded.

This rumor seems to confuse the heel code with bottle date codes, which are traditionally found on the neck of the bottle. On newer bottles, date codes are stamped with ink. On older bottles, they were part of the glass mold and were often beside an embossed logo from the glass producer or bottler. Dating on older bottles helped bottlers know how long they had been in circulation. (more…)

March 26, 2010 at 12:01 am 7 comments

The Meaning of the Numbers Inside the Recycling Symbol

By: Chad Upton | Editor

I remember going to the grocery store as a small child. It seemed like we were there for hours before finally packing all of our purchases into large brown paper bags. A few years later they phased out paper bags over concern for the trees required to make the bags.  They were replaced with plastic bags and we have used them almost ever since. But, A few years ago, paper bags started appearing once again. Although they’re made from trees, those are pretty easy to grow compared to the raw materials of plastic.

It seems like everything is made from plastic now. I did a bit of dumpster diving tonight to find out how much. I went through my recycling bin looking for things with the recycling symbol on them — I guess that probably doesn’t really count as “dumpster diving.” These numbers only appear inside the recycling symbol on plastic products.

Plastic is a petroleum product, meaning the raw material used to create plastic is oil. It’s no secret that oil is one of the most in-demand natural resources and for a variety of reasons oil prices have sharply increased over the past 10 years. It’s not just the fuel companies who are affected by the increasing price of oil, but also plastic manufacturers. Both of these groups have to pass those increased costs on to their customers, and those businesses pass it on to their customers. Somewhere down the line, that customer is you and you’ve obviously noticed at the gas pump.

But, you may not have noticed the increase on plastic prices, at least not directly. Depending on where you live, you may have noticed a big or small push for you to use (or buy) reusable grocery bags. Of course these are great for the environment, but they also save the grocery store a lot of money on plastic bags, which have become significantly more expensive in the past few years. In some places, you even have to pay extra if you want plastic bags. (more…)

February 9, 2010 at 1:22 am 7 comments


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