According to Earth 911, plastic bottle caps are made from a different kind of plastic called polypropylene (plastic #5) which has a higher melting point (a difference of 160 degrees Fahrenheit!).

IMPD collecting bottle caps to turn into ‘Peace Benches’ by: Nick McGill Posted: Sep 21, 2019 / 03:53 PM EDT Updated: Sep 21, 2019 / 04:56 PM EDT ...

Using wooden pallets, Brent and his father work together to cut and stain the wood, while Brent and his mother fabricate the bottle cap designs. Thus far, Brent has completed 150 works of art.

Removable plastic bottle caps could become a relic of the past if a bill inching its way through the California legislature becomes law. Assembly Bill 319 -- which passed the Assembly Natural ...