1. Principle
It removes handwriting by absorbing graphite. This kind of eraser can not only erase handwriting (in fact, it can accurately remove handwriting), it can also be used to highlight important parts or make the work more detailed. However, it is not good at removing large areas of handwriting, and it will stain or even stick to the paper if it is overheated.
Two, classification
1. The soft polyethylene-based eraser has the texture of plastic and has the same function as the ordinary pink eraser. These erasers are softer than pink erasers, so they are less likely to damage paper. Polyvinyl erasers are generally white.
2. The eraser is called a soft eraser. It is mainly made of a gray material and resembles gum and clay. Its strength makes it leave no residue, so its life span is longer than other erasers.
