quinta-feira, 25 de fevereiro de 2010

Chewing gum...

...is a type of gum traditionally made of chicle, a natural latex product, or synthetic rubber known as polyisobutylene, which is a non-vulcanisable form of the butyl rubber (isoprene-isobutylene) used for inner tubes or to line tubeless tires. For reasons of economy and quality, many modern chewing gums use rubber instead of chicle. Chicle is nonetheless still the base of choice for some regional markets, such as in Japan.
Modern chewing gum was first developed in the 1860s when chicle was exported from Mexico for use as a rubber substitute. Chicle did not succeed as a replacement for rubber, but as a gum it soon dominated the market. Chicle gum, and gum made from similar latexes, had a smoother and softer texture and held flavor better. Most chewing gum companies have since switched to synthetic gum bases because of their low price and availability. According to their website, Glee Gum is the last gum manufacturer in the United States to produce gum using all-natural chicle.
For me the chewing gum is the best invention, because relieves stress, entretained and I consider one of my good adiction.


By: Ju

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