• Home

Nikko Ebonite Mfg. Co., Ltd.

  • Company Profile
  • History
  • Our Products
  • Order
  • What is Ebonite?
  • Access
  • List of Characteristics/
    Properties of
    Ebonite
  • Raw Materials of
    Ebonite
  • Manufacturing
    Processes of Ebonite

Manufacturing Processes of Ebonite

Manufacturing Processes of Ebonite Rods
Mixing Mix natural rubber, sulfur and ebonite powder using a roll.
Material Cut the mixture into thin rectangles.
Setting up the extruder Set up and adjust the extruder to necessary diameter.
Inject materials Inject ebonite materials into the extruder to make rods.
Extruding This is how ebonite is ejected from the extruder.
The exit hole is ignited to make the surface smooth by heating up tube sections.
Sprinkling powder Pre-vulcanized ebonite is still soft.
Power is sprinkled to prevent sticking to other substances.
Placing in cans. Place in cans.
Steam boiler Steam ebonite in the steam boiler for several days.
A chemical reaction combining rubber and sulfur molecules is called “vulcanization.” Vulcanization is accelerated by applying heat and pressure by steam.
By the chemical reaction, elasticity and strength improves dramatically. And soft ebonite prior to vulcanization becomes ultra hard rubber. Temperature control at the time of heating requires proficient skills.
At the beginning, temperature needs to be kept down. Then, temperature is gradually increased. And there is further increase at the end. These temperature controls are done depending on the shape or size of ebonite.

Because the boiler cannot be opened in the middle of the steaming process, experts control heating temperature by checking the steam pressure and exhaust intervals.

After several days, the manufacturing process of ebonite is finally completed.
Copyright © 2010 Nikko Ebonite Mfg. Co., Ltd. All Rights Reserved.