There are basically three common materials for tea bags: non-woven fabric, nylon, and corn fiber.
1. Non-woven tea bag
Non-woven fabric refers to polypropylene (PP), which is the same material as mask fabric.
2. Nylon tea bag
Nylon is a petrochemical product, there are many types, and it is very common in life.
Both of the above can be made into food grade, otherwise it would be impossible to make tea bags.
However, even if you use the best materials for these two, there is no way to solve the problem of high temperature and long-term soaking. Microplastics will be released. If they are of inferior quality, more toxic substances will be released. Therefore, you can use this If you really want to use them, you must have a reliable channel to buy high-quality tea bags. If it is unavoidable, at least avoid poisoning. Time high to soak.
3. Corn Fiber Tea Bags
As for corn fiber, it is the best and the least of the three materials. This corn fiber is not the fiber we usually talk about when we eat, let alone the ones you see in the leaves of corn silk, but a kind of polylactic acid (PLA). The biodegradable material is also called "corn plastic" in the United States, also known as polylactic acid fiber and PLA fiber. The unit price is much more expensive than the other two, at least twice. Moreover, the current global production is very small. Now that the world is pushing to ban plastics, the demand for PLA is higher, and the production capacity is still increasing. It is estimated that it will be better in three to five years, but in fact the production capacity is still far from enough.
Most of the corn fiber tea bags on the market are fake. You can tell if they are burnt to ashes or granules by burning them with fire.
Therefore, the preferred order of the three tea bags is:
1. Corn fiber (polylactic acid PLA)
2. Other high-quality non-woven fabrics, nylon.
