Should I recycle envelopes with plastic windows?

Will the plastic in envelopes mess up recycling?

We heard once that throwing just a small amount of unrecyclable material would screw up the recycling process, or cause the entire portion of recycled material to go to waste. So for a long time we would spend tedious hours cutting out the plastic windows from envelopes to make sure no non-recyclable materials got into our recycling bin. After a while we got fed up with all the time this process took, thinking - why should we have to spend hours of our time to make up for the credit card and other advertising companies' neglect of the environment? Well, after some research, it looks like recycling facilities are able to process those little plastic windows after all.

For the most part, you can recycle envelopes with plastic windows

Current research indicates that post-consumer paper mills have systems that can remove small amount of contaminants. That is, the little plastic windows still aren't recyclable, per say, but they should be able to be filtered out by the recycling system. This way you can spend your hours on other environmental endeavors that otherwise would have gone to tedious envelope window cutting.

Recycle paper, not plastic paper

A good rule of thumb when trying to decide whether or not a paper or cardboard is recyclable, is to first check to see if there's a recycling symbol (with a number in the center), somewhere on the material. Just because there isn't, doesn't mean the material is not recyclable. It simply means the manufacturer didn't take the time to print a recycling symbol on there. Paper mills are unable to recycle paper that won't dissolve in water. A good rule of thumb is to test the paper for a waxy or plastic feel - this paper is not recyclable. However, if the chipboard is cardboard on one side, as with a cereal box, then you can recycle the box. The idea is that the paper mills can filter out contaminants, but it doesn't do you good to recycle the paper if it's entirely plastic-based, such as is often the case with frozen food containers.