Tips 1:how to buy the right eraser from China

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2013-07-18 16:26:29

How do erasers work

The molecules in erasers are 'stickier' than the paper, so when the eraser is rubbed onto the mark, the graphite sticks to the eraser rather than over the paper.

What erasers are made of

The primary ingredient is rubber--either natural or synthetic. Natural rubber is harvested from rubber trees, and synthetic rubber is a compound most often derived from styrene and butadiene.

The rubber is combined with sulfur in order to vulcanize it, which makes it longer lasting and heat-resistant. Vegetable oil is added to make the rubber softer and easier to shape. A dye is also added to give the eraser its characteristic pink, white, green or brown color.

Rubber

Rubber is the most abundant ingredient in erasers. It can be either natural or synthetic, depending on the type of eraser. Natural rubber comes from latex, which is produced by a tree called Hevea Brasilienesis. Synthetic rubber is made up of a combination of many different chemicals including styrene and butadiene.

Sulfur

Sulfur is a very important substance in erasers because it helps the rubber become stronger and more resistant to heat. Without this, erasers would melt easily when exposed to direct sunlight.

Vegetable oil

Vegetable oil is added to erasers because it softens the rubber and makes it flake away easily. This way, when the eraser is rubbed on a piece of paper, the dirty rubber is left behind and discarded.

Other ingredients

Erasers have different ingredients in them that make them perform a wider variety of functions. For example, to remove stronger marks such as ink, pumice is added to the rubber to make it more stiff and abrasive. All erasers also include some type of pigment to determine their color. White is produced by adding a zinc titanium oxide, and red is produced with an iron oxide.

Eraser the future

Modern resources allow eraser to be made in any color, shapes, and styles. Development in eraser technology mainly in the way rubber is produced. Latest chemical formulas are constantly being developed to produce synthetic rubber efficient.For more insights and further information about erasers, pls visit our site :www.worlderaser.com

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