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Rubber manufacturers tell you what is the development history of rubber?
Release Date:
2021/12/02
People use rubber to write, so far only 200 years of history.
The eraser produced by the eraser manufacturer can erase the pencil writing was discovered by the British scientist Fristley in 1770. Before that, people rubbed pencil characters with breadcrumbs.
Priestley's discovery caused a great stir because it brought great convenience to people. However, the ancient eraser is made of natural rubber. When writing, the debris is not removed. The end of the pencil is attached to the eraser, which is more and more dirty. Later, when people made the eraser, they added substances such as sulfur and oil to make the eraser easy to fall off, and the end of the erased pencil left the eraser together with the debris, so that the eraser was often kept clean and did not stain the paper.
What is the main function of the rubber produced by the rubber manufacturer?
1. You can erase pencil marks and correct typos. Now there are also pen marks that can be erased.
2. Some erasers are beautiful and can be used as gifts or handicrafts.
3. You can also wipe the mafia on shoes, cars and other items.
What are the main types of rubber rubber manufacturers?
The rubber produced by the rubber manufacturer includes ordinary fragrant rubber, 2B, 4B, 6B and other art special rubber for painting, plastic rubber, etc. to meet various needs. Some pencils have small erasers on their tails. Most of these erasers are pink and have a smooth colloidal surface. They perform well in most cases, but sometimes destroy the paper. If the effort is too heavy, the eraser still has a chance to break the paper. When the writing is erased, the eraser leaves a residue on the paper. If not properly organized, these dregs will leave traces on the paper.
Another type of eraser is the brown eraser commonly used by artists, which is made of soft and rough rubber. It is designed not to shred paper, and it is easy to wipe off large areas of marks. But this eraser can't erase the writing effectively and accurately.
Another eraser often used by the artist is called a soft eraser. It is mainly made of gray material, together with rubber to make acorns. Its strength allows it to leave no residue, so it lasts longer than other erasers. Remove the handwriting by "absorbing" graphite. This eraser can not only erase handwriting (in fact, it can accurately remove handwriting), but also can be used to emphasize important parts or make the work more detailed. However, it is not good at removing large areas of handwriting, subject to excessive heat, and will stain even stickers.
The soft polyethylene rubber has the texture of plastic and functions the same as ordinary pink rubber. These erasers are softer than pink erasers and are less likely to damage the paper. Polyethylene-based rubber is generally white.
Some pencils have small erasers on their tails. Most of these erasers are pink and have a smooth colloidal surface. They perform well in most cases, but sometimes they make paper. If the effort is too heavy, the eraser still has a chance to break the paper. When the writing is erased, the eraser leaves a residue on the paper. If not properly organized, these dregs will leave traces on the paper.
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