Did you know that the first erasers were actually pieces of bread?

There was no better material for removing pencil markings until rubber became available. Rubber was known to the people of Central and South America long before Europeans came to the New World. As early as the eleventh century, it was used to coat clothing and to make balls. It was also used to make footwear and bottles by pouring the liquid form on earthen molds and allowing it to dry.

In 1735, the French scientist Charles de la Condamine described a substance known as caoutchouc and sent samples to Europe. Caoutchouc was made from a fluid produced under the bark of a tree found in tropical areas of the New World. This milky liquid, known as latex, is still used to make natural rubber.

Caoutchouc was suggested for use as an eraser sometime around 1752 by the French. In 1770, the English scientist Joseph Priestley suggested that caoutchouc be named rubber, because of its ability to rub away pencil marks. In the United Kingdom, erasers are still known as rubbers.

The most important raw material in an eraser is rubber. The rubber may be natural or synthetic. Natural rubber is obtained from latex produced by the rubber tree. Synthetic rubber exists in a wide variety of forms, but the most common synthetic rubber is derived from the chemicals styrene and butadiene.

At U.S. School Supply, our erasers don’t contain latex. We offer a variety of erasers including hand held erasers, pencil top erasers, and eraser sticks. Even some of our pencil grips can be used as an eraser to correct those pencil marks. School teachers love our great assortment of this useful item.

Source: www.answers.com/erasers