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What is the role of rubber rubber wholesale?
Release Date:
2021/09/22
Rubber is a stationery made of rubber, which can erase traces of graphite or ink. There are many different shapes and colors of rubber. There are ordinary rubber, 2b, 4b, 6b painting special art rubber, plastic rubber, etc. Rubber wholesale eraser People use rubber to erase words, so far, it is only more than 200 years old.
In 1770, British scientist Priestley discovered that rubber can erase words from a pencil. Before that, people used breadcrumbs to erase the writing on the pencil. Priestley's discovery caused a great stir because it brought great convenience to people. However, rubber is made of natural rubber. When deleting text, it does not drop pieces. It just sticks the pencil head to the eraser, and the more you rub it, the dirtier it gets. Later, people in the production of rubber, added sulfur, oil and other substances, so that the rubber is easy to fall debris. The scraped pencil tip left rubber and debris. In this way, the rubber can always be kept clean and will not stain the paper.
In 1770, the British scientist Joseph Priestley (Joseph Priestley) said: "I found a substance that is very suitable for erasing pencil handwriting." At that time, all of Europe used rubber particles cut into small pieces to erase handwriting, so this substance was called rubber. Another English engineer, Edward Naim, is said to have invented the eraser in 1770. Before that, people were using sponges to wipe their handwriting. Naime said that once he picked up an eraser and found it useful, so he started producing and selling it.
It is not convenient to start rubber, because unprocessed rubber is prone to rot. It was not until 1839 that Charles Goodyear discovered that vulcanization could improve the quality of rubber that rubber became reliable.
In 1858, a man from Philadelphia was granted a patent for an eraser embedded in the end of a pencil, but the patent for a pencil with an eraser was later canceled because it was judged that "only two existing things are embedded together, not a new product".
the role of rubber rubber wholesalers:
1. You can remove pencil marks and correct typos. Now some people can erase handwriting.
2. Some rubbers are beautiful and can be used as gifts or handicrafts.
3. You can also use shoes, cars and other things to sweep.
Today, there are many kinds of rubber wholesale rubber to meet different needs. There are ordinary fragrant rubber, 2b, 4b, 6b painting special art rubber, plastic rubber, etc. Some pencils have a small eraser at the end. Most of these erasers are pink and have a smooth colloidal surface. The eraser of the eraser wholesaler performs well in most cases, but sometimes breaks the record. If the force is too large, the eraser may still break the paper. When erasing handwriting, the eraser leaves a residue on the paper. If not cleaned properly, these residues will leave marks on the paper.
Another type of rubber is the brown rubber commonly used by artists, which is made of soft and rough rubber. Its design makes it easy to erase large areas of traces without damaging the paper. However, such erasers are not effective in accurately erasing handwriting.
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