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Eraser, (10)Again, the rubber goes for 12 minutes into the stemmed press.…

- - - - (3)To fasten the process, accelerators are added to
        
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      - (1) Rubber is pushed through and rotated between large heated rollers.
        
        (4)In this mixture, vulcanized vegetable oil (sulfur-treated vegetable oil), standard vegetable oil and calcium carbonate are added as a filler and mixed well.
      - (2) In this mixture, Sulfar is added to serve as a curing agent
    - - (8)To stop the healing process, the excess rubber that has leaked out due to pressing is removed and then inserted into cool water.
- - - - recycle: It depends as some companies allow to recycle erasers while some don't.
      - Reuse; Reusing the old erasers we are to recycle.
- - - - (7) For around 20 minutes, place the rubber in a hot steaming press to heal at 163 degrees Celsius. The friction compacts the rubber and the heat hardens it.