Why are sol-gel or “ceramic” coatings also often referred to as “green” or “environmentally friendly” coatings?
Many lines of cookware that use a sol-gel “ceramic” coating claim that they are “green” or “environmentally friendly” because they use a coating that contains no PFOA and no PTFE.
Normally, “green credentials” would consider all factors including the life span of the article. Most sol-gel “ceramic”-coated pans have a shorter nonstick life than conventional PTFE-coated pans, so they will wear out sooner, leaving the consumer to buy several sol-gel pans in the same lifespan as one pan coated with one of the better conventional PTFE coatings.
Implications of this would include:
- More raw materials used in manufacture of pans
- Additional energy used in manufacture and transportation. More pans going to landfill or reprocessing
Furthermore, most PTFE coatings from reputable coating manufacturers are available in formulations that are made without PFOA, already meeting all EPA guidelines.
All these factors can be considered when expressing “Green credentials” of a type of coating.