Why is there a need for cottoners? Why is cotton put in pill bottles?
The answer is to keep pills from being damaged in shipping. That is its only purpose. Some people think that it is to keep moisture out of the bottle but that is not true. Bottles that are filled by pharmacists do not contain cotton, That is because they are not shipped.
As long as there are pill bottles that are subjected to the jarring forces involved in shipping, there will be cotton (or some equivalent) in those bottles. And, as long as there is a need for cotton, there will be a need for machines to insert the cotton. Cottoners.
BuyMachineryNow.com carries many cottoners on its website, both single and multiple head.