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Re:Commercial tea bags release microplastics, entering human... by crazygringo on Monday December 23, 2024 @02:14PM (#42496863)
> I think it's pretty reasonable to expect a bag made of a fine mesh of plastic to yield more tiny broken off pieces than something like plastic container.

Is it? The mesh bag goes through basically zero abrasion at less than 100°C. It just sits there in the mostly still water.

Meanwhile, the plastic container might be in contact with fatty food way over 100°C. It gets scraped by pointy utensils. It gets abraded by a cleaning pad. It gets scratched and cloudy. It gets used hundreds of times.

I'd be guessing the plastic container sheds orders of magnitude more microplastics.

Re:Commercial tea bags release microplastics, entering human... by __MatrixMan__ on Monday December 23, 2024 @05:08PM (#42497999)
I'd be interested in seeing this measured. Probably it depends on how much abuse the plastic container receives. I don't think mine ever come in contact with something > 50°C, and the dish scraper I use isn't very pointy, but ymmv.

The reason I'm sticking with the tea-bag as the greater contributor is that I expect that the likelihood of a given region of plastic detaching and being washed into food/drink is related to:

- how closely the overall piece resembles a sphere and how large that sphere is (e.g. whiskers are likely to be knocked off, whereas the center of a sphere is unlikely to be dug out

- whether it has ever gone through this kind of treatment before

Sort of like how when eating a donut covered in powered sugar 95% of the mess happens within the first second of handling it.