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Production process of industrial rubber casters


Production process of industrial rubber casters

In order, they are: Banburying process; Rubber parts preparation process; Extrusion; Calendering; Bead forming; The following are respectively:

Mixing process

The internal mixing process is the process of mixing carbon black, natural/synthetic rubber, oil, additives, accelerators and other raw materials together and processing them in an internal mixer to produce "rubber". All raw materials must be tested before entering the mixer and can be used after being released.

The compound used in each rubber component in a tire has specific properties. The composition of the compound depends on the performance requirements of the tire. At the same time, the changes in the composition of the rubber compound also depend on the needs of the supporting manufacturers and the market, which mainly come from the requirements of traction, driving performance, road conditions and the tire itself.

All rubber materials must be tested before entering the next process - the preparation process of rubber parts, and can only enter the next process after being released.

Glue parts preparation process

The glue parts preparation process includes 6 main sections. In this process, all the semi-finished rubber parts that make up the tire are prepared, some of which are pre-assembled.


The compound is fed into the extruder head, which extrudes different semi-finished rubber components: tread, sidewall/pipe and apex.


The raw material cord is passed through the calender and a thin layer of rubber is hung on both sides of the cord, and the finished product after Z is called "cord". The raw material cords are mainly nylon and polyester.

bead forming

The bead is made of many steel wires hanging with glue and then winding. The compound used for the bead has special properties. After vulcanization, the compound and the steel wire can be closely attached together.

stick the triangle tape

In this process, the apex extruded from the extruder will be manually applied to the bead.

Apex strips play an important role in the handling properties of tires.

Belt forming

This process is for the production of belt layers. In the spindle room, many steel wires come out through the threading plate, and then pass through the die plate at the same time with the rubber material to make the two sides of the steel wire hang glue.

After hanging, the belt layer is cut to the specified angle and width. Width and angle size depends on tire size and structural design requirements. All rubber parts will be shipped to the "Tire Building" process, ready for tire building.

tire building process

The tire building process is to assemble all semi-finished products on a building machine into a green tire. The green tire here refers to the unvulcanized tire. After the green tire is inspected, it is transported to the vulcanization process.

Vulcanization process

The green tire is loaded into a vulcanizer, where it passes through the mold for the proper time and under the proper conditions, thereby vulcanizing it into a finished tire.

The vulcanized tire has the appearance of the finished tire—the pattern/font and tread pattern. The tires will be sent to the final inspection area.


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