Different Types of Labels

I buy many products every month like most people out there. When I buy a product I often look at the price and label. The price informs me whether it will be a good deal, but a label let’s be know what product I am considering buying. I noticed that on my of the products that I buy there are labels called pressure sensitive labels. I noticed a difference compared to glue applications, as from my experience they stick to the surface pretty well. Why is that the case? It is hard for me to say, but as long as the labels stay intact I am a happy consumer as I know precisely what I am buying.