Educate yourself about bio bags
The companies name: TetraPak, was derived from the fact that these cartons were tetrahedral from "four" in the Greek language. Another one called the TetraBrik was introduced in nineteen sixty three (1963), which was a rectangular cuboid carton. Later, more cartons were launched such as the tetrawedge which was wedge shaped and tetraprisma which was round octagonal and then there was the tetrafino which was a pouch shaped packaging. Some other tetra bio bags include tetrarex(gable top), tetratop(paper and plastic moulded in one) and the now discontinued tetraking. Recently, tetra bio bags have been introduced for vegetables opposing the tin culture.