If you think about a business recycling plastic bottles, it is good to have an idea how bottles are processed after collection. A number of films on YouTube give you a good picture. A good example is:
https://www.youtube.com/watch?v=zyF9MxlcItw
Other films are:
https://www.youtube.com/watch?v=lCol2bnANiQ (Do you know Levis jeans is now making jeans from used plastic bottles. 8 bottles used for making one jeans. How it works, lets see How plastic bottles are recycled into polyester.)
https://www.youtube.com/watch?v=cpGr22a1_BE (Polygenta Technologies Limited is a leading producer of recycled Polyester Filament yarn from 100% post-consumer PET bottle in Indian Subcontinent. The plant is located in Nasik, India and has a production capacity of 10,000 MT per annum.)