IR Transmitter Receiver to differentiate paper and plastic bottle

Hi I just want to ask if its possible to differentiate plastic bottle and paper using IR Transmitter/Receiver because I tried to research it and can't find enough answers to help me in doing this kind of project. Thanks in advance. :slight_smile:

An IR spectrophotometer will distinguish between paper and plastic, but is expensive and unsuitable for mixed waste processing where the plastic is contaminated by adhesive paper labels.