A waterproof tray. (Machine-translation by Google Translate, not legally binding)

摘要

A waterproof tray, characterized in that it is constituted by two sheets of cardboard which have one of their faces treated with caolin or nevin to achieve a waterproof and aseptic finish, suitable for direct contact with food, joining both sheets together by waterproof glue. Their untreated faces, and acquiring by suitable pressing or molding the appropriate form for use as carrier trays. (Machine-translation by Google Translate, not legally binding)