An eraser is a common rubber product that is often used to erase traces of pencil or ink. The following is the general manufacturing process of erasers:
1.Raw material collection: The main raw material of eraser is natural rubber. Natural rubber is extracted from the sap of the rubber tree, usually by cutting a wound in the trunk of the rubber tree so that the sap flows out and is collected.
2.Rubber preparation: The collected rubber sap undergoes a series of treatment steps, such as filtration, concentration, and agitation, to remove impurities and moisture, and then to obtain pure rubber.
3.Rubber Processing: Pure rubber is sent to a rubber products factory for processing. During processing, rubber is mixed and heated to increase its plasticity and processability.
4.Rubber molding: The processed rubber is injected into the mold, which can be customized according to the desired shape and size. The rubber cools and solidifies in the mold, forming the shape of a rubber.
5.Post-processing: After the eraser is formed, some post-processing may be required, such as trimming, sanding, and printing, to get the final eraser product.
It should be noted that the above is the general eraser manufacturing process, and there may be some slight differences between different eraser manufacturers. At the same time, there are also some erasers that are made of synthetic rubber, and the manufacturing process is different from natural rubber.