How do rubber erasers work?

Asked By: Zoa Aguirrezabala | Last Updated: 12th February, 2020
Category: hobbies and interests drawing and sketching
4.3/5 (149 Views . 27 Votes)
When you rub an eraser across a pencil mark, the abrasives in the eraser gently scratch the surface fibers of the paper to loosen the graphite particles. The sticky rubber in the eraser grabs and holds on to the graphite particles. Erasers work because of friction.

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Just so, is eraser made of rubber?

Eraser, piece of rubber or other material used to rub out marks made by ink, pencil, or chalk. The modern eraser is usually a mixture of an abrasive such as fine pumice, a rubbery matrix such as synthetic rubber or vinyl, and other ingredients.

Beside above, why do some pencil erasers not work? You can't really stock up on erasers because they dry out.” (This idea inspired the slogan on a t-shirt the Erasable podcast sells: “Pencil is forever.”) Advincula explained: “Over time, some of the rubber properties can be lost because of oxidation or chemical degradation.

Hereof, why are erasers made of rubber?

Erasers are made out of rubber because it is a nonpolar solid material which attracts other nonpolar solids, like graphite. The way it is malleable and crumbles (like others mentioned) makes it less abrasive to the paper itself.

What can you use instead of a rubber?

Silicone is a good substitute for rubber. It is man-made material that is typically inert, contains low toxicity levels and is largely heat-resistant. For these reasons and due to its rubber-like texture, it's often used in cookware as well as in lubricant and adhesive materials.

36 Related Question Answers Found

Why are erasers pink?

"The erasers featured pumice, a volcanic ash from Italy that gave them their abrasive quality, along with their distinctive color and smell. Because of the eraser's trademark pink color and surprisingly soft texture, Faber decided to name it the Pink Pearl."

What things are made of rubber?

Other household rubber items include boots, raincoats, pond liners, mattresses and cushions, pillows, grips on garden tools, bathtub plugs, doorstops, earplugs, hot water bottles, aquarium tubing, faucet washers and rug backings.

What happens if we eat eraser?

Eating a bit of eraser will not cause any symptoms. If someone swallows a large enough piece, they may choke, gag or spit up. The piece may also get stuck in the intestines. This can cause stomach pain or discomfort and may make the person throw up.

Do pencil erasers have latex in them?

Erasers: Baumgarten's – Neon erasers. Faber-Castell – All eraser products are latex free and PVC free EXCEPT Perfection Eraser Pencil.

What is ink eraser made out of?


An ink eraser has sulfite or hydroxide ions that bind to the central carbon atoms of the dye. This changes the internal geometry of the ink, shifting its pigment and making it transparent (or nearly transparent). Once the eraser is dry, you can write in that place using a different pen.

Can you melt erasers?

They form a class of molecules that are called vulcanizates. This applies to industrial products such as: vehicle tires, o-rings, gaskets, washers, running shoes, all form of sports balls (footballs and basketballs), and erasers. It is not possible to just melt one molecule.

What was used before erasers?

Before rubber erasers, tablets of wax were used to erase lead or charcoal marks from paper. Bits of rough stone such as sandstone or pumice were used to remove small errors from parchment or papyrus documents written in ink.

Why are white erasers better?

Softer rubber erasers require less force and friction, making them less abrasive to paper. White vinyl erasers, for example, erase more cleanly than the common pink eraser because they are made of softer vinyl. Kneaded erasers are moldable and soften when you knead them in your hands.

How long does an eraser last?

On average one of those white erasers lasted about three weeks.

What are eraser shavings called?


British and American most common term for rubber/eraser shavings. So far, I've come across statements that the most common used terms are eraser/rubber shavings, eraser/rubber dust, eraser crumbs, rubberings, and eraser waste.

Is eraser biodegradable?

These earth-friendly erasers are made from 100% Recycled Rubber - 50% post-industrial and 50% post-consumer. The packaging is 95% biodegradable, and printed with soy-based ink on 100% postindustrial recycled paper. The erasers feature a rectangle shape, and paper covers to make erasing easy and clean.

Why do Erasers have two ends?

The blue end is meant for erasing pencil marks on heavy grades of paper or dark marks. The soft end (pink/orange) is useful for light grades of paper which the hard gritted side would tear apart, and also for precision erasing, such as removing a light stray mark from among dark marks.

What is the best eraser?

Our Top Picks
  • Best for Overall: Prismacolor Scholar Latex Free Eraser at Amazon.
  • Best Budget: Sakura 50259 Eraser at Amazon.
  • Best for Colored Pencils: Tombow MONO Sand Eraser at Amazon.
  • Best for Charcoal: Faber-Castell Kneaded Eraser at Amazon.
  • Best for Canvas: Pentel Ain Eraser at Amazon.

Is natural rubber biodegradable?

The downside is that synthetic rubber is not at all biodegradable because it is made from inorganic materials. Because natural rubber is plant-based, the key advantage is that it is biodegrade, and a renewable resource. Rubber comes from the tree (hevea brasiliensis), which produces a natural latex sap.

What does an eraser symbolize?


The eraser is, thus, deceptively small. It encompasses so much courage and valor while lying snuggled in among the pens and pencils of desk drawers and pencil pouches. Despite this superior camouflage, the eraser will remain a symbol of knowledge that emerges as a result of successful and vigorous failure.

How do you soften hard erasers?

Dip the eraser into the water. Gently knead it and squeeze it with your fingers until you can feel it begin to soften. Find a paper towel and dry the eraser. Place it in a cool dry place to completely dry to normalcy.

Who invented rubber?

Charles Goodyear