Useful Info Links and a collection of information about transport and plastics . Centre Physical home of Habitat Trust and other resources to the wider community. It is tough, and used to make products including business machines and telephone handsets. B Bakelite was an early form of plastic made of phenol formaldehyde, invented by Dr Leo Baekeland in 1907. Benzene is a basic building block for many plastics, derived from coal or oil.
Biodegradable plastics decompose through the action of bacteria.
Blow moulding occurs when molten plastic in the shape of a tube is expanded within a split mould of the shape of the finished product. Blown film is a variation of the extrusion process that continuously expands a tube of molten plastic into a thin bubble that is cooled in air to produce thin film, typically used for packaging and bags. C Glossary Index Catalyst is a substance that increases the rate of a chemical reaction. Calendering is an alternative to the extrusion method of making sheet materials such as vinyl flooring. Their use is being phased out because their emission into the atmosphere has been found to deplete the ozone layer.