Another interesting application of hemp in industry is making plastic. Many plastics can be made from the high-cellulose hemp hurd. Hemp seed
oil has a multitude of uses in products such as varnishes and lubricants.
Using hemp to build is by no means a new idea. French archeologists have discovered bridges built with a process that mineralizes hemp stalks into a long-lasting cement. The process involves no synthetic chemicals and produces a material which works as a filler in building construction. Called Isochanvre, it is gaining popularity in France. Isochanvre can be used as drywall, insulates against heat and noise, and is very long lasting.
“Bio-plastics” are not a new idea, either — way back in the 1930’s Henry Ford had already made a whole car body out of them — but the processes for making them do need more research and development. Bio-plastics can be made without much pollution. Unfortunately, companies are not likely to explore bio-plastics if they have to either import the raw materials or break the law., Not to mention compete with the already established petrochemical products.