A primary function of the leafâs waxy cuticle is to reduce water loss through the leaves, which is particularly important in arid deserts with little rainfall or Mediterranean climates with seasonal rainfall.
The first plant designed for rolling aluminum foil was opened in 1910. Aluminum foil replaced tin foil, when the Dr. Lauber, Neher & Cie., Emmishofen aluminum foil rolling plant in Kreuzlingen, Switzerland, was opened by J.G. Neher & Sons.
Erik Andreas Rotheim (19 September 1898 - 18 September 1938) was a Norwegian professional chemical engineer and inventor. He was born in Kristiania, earned his engineering degree in Switzerland and established his own company at home in Oslo in 1925. He is best known for invention of the aerosol spray can, the patent application for which he submitted in 1926. The Norwegian patent was granted in June 1929. He filed the United States patent application on 30 September 1927 and it was approved on 7 April 1931.