A company produces PP surgical products from granular raw materials by injection. molding technique. They did not find any weight loss after melting. According to the manufacturer policies, they should mention the amount of CO2 emission. How do they measure the amount of CO2 emission?
If there is no detectable mass loss, the energy used in the process is probably the main contribution to the GHG emissions. However, single use PP products have a large GHG footprint and I can imagine that single use will need to be reassessed
No weight loss noted in melting process. Besides, the equivalent carbon emissions for PP were assessed to be 1.34 kg CO2 eq. per unit kg of PP. Polypropylene (PP) is a common plastic used to create end goods for customers, such as plastic packaging, and it accounts for 16 % of the entire plastics industry. On average, the production of 1 kg of high density polyethylene (HDPE) creates 1.6kg of CO2, while production of 1kg of polypropylene (PP) yields 1.7kg of CO2. The reduced resource usage, energy consumption and carbon emission from production to end-use is essential for sustainable development and The amount of gross CO2 emissions is estimated to be 1.58 kg CO2 per kg of PP pellets and 1586.4 kg CO2 per 1 ton of PP pellets.
- Badges
- Science method