Make a hole in plastic bottle caps using infrared rays HEAT-TECH info 2 months ago This video shows making a hole in a PET bottle cap by infrared rays using a halogen glass rod heater. Please check the following site for more information. Related page: Hole making of PET bottle 8. Comparison of far-infrared rays and near-infrared rays Heating of plastic containers 9. Attention in the infrared rays use (Q&A) 6. Absorption rate of infrared rays No.72 Heat sterilization of PET bottle caps 3. Type of the infrared rays 7. Generation of far-infrared rays