The sachet or single-dose is one of the most used formats not only in Food but also in Cosmetics and Pharmacy, for tablets, powdered products, creams, gels, refreshing wipes, etc.
The middle layer is often aluminum, to provide an added barrier and strength.
Easy-tear properties can be added.
Other compositions are also possible:
PET+Paper+PE, PET+ALU+PET+PE, etc.
Recyclable solutions available