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Basic knowledge of Rubber Rollers（1,2）

1.What is RUBBER ROLLER?

Rubber roller is "a rubber or an elastic material covering the core made of metal or other materials".
Rubber rollers are used in wide application, utilizing its features listed below;

Characteristics of Rubber Rollers

1. High coefficient of friction
2. Quickly returns to its original shape when the shape is distorted.
3. Resistant to chemical substances and protects the roller core and shaft.
4. Prevents damage caused by scratching and bumping.
5. Compensates for small changes in machine precision.
6. It has many special uses;

a. as a dielectric or insulator.
b. as a conductor and semi-conductor on changing the electrical properties
c. as a high-release material (Silicon rubber)
d. with special surfaces (plate roller, grooved roller, helical processing, etc.)
e. others

Manufacturing of rubber rollers, maintaining such characteristics above, requires sophisticated technology and experience. We focus on;

1.The performance of the rubber compounds
The performance of the rubber much depends on the formulation of rubber chemicals even though the base polymer is the same.
2.Finishing precision
The performance of the rubber much depends on the formulation of rubber chemicals even though the base polymer is the same.
3.Stable Quality
Stable Strength, Uniform hardness, minimal Foreign particles, Pin holes and etc
4.Roller core material and structure
Stable Strength, Uniform hardness, minimal Foreign particles, Pin holes and etc
5.Proper bonding of rubber and core
Insufficient bonding can cause rubber coming off from the core or breaking.

Rollers perform the best when they are properly selected for each application, based on the various conditions outlined above.

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2.Rubber roller manufacturing methods

There are four methods of manufacturing rubber rollers;

  • 1．Plying method (Calendered sheet is covered onto the iron core)
  • 2．Extrusion method (Rubber is extruded on to the iron core using an extrusion machine)
  • 3．Press method (Rubber is filled into a metal mold and pressed with heat and pressure)
  • 4．Casting Method (Liquid resin is filled into a metal mold and heated in an oven)

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