The Most Common Rubber Manufacturing Processes

31 Oct

There are various methods of manufacturing rubber.  Each process is good on its way in making a certain rubber category.  Once you know the manufacturing processes, you can be in a position to understand their effects on sale and prices.  Molding, calendaring, latex dripping and extrusion are the most common rubber processing methods.

Extrusion begins by dipping an extruder with a vulcanized compound.  A dye carries the extruder upon putting it.  The dye is usually a special manufacturing tool that is mean t to shape the rubber.  When the dye is put, the compound is forced about the pressure of the system through the extruder's opening.   Before becoming usable, the extruded product is vulcanized.  Every rubber compound ought to have a cure package that is usually blended before vulcanization.

Latex dripping happens when the molds that are thinly walled are immersed in latex and then withdrawn slowly.  To increase the thickness of the product, it can be re-dipped slowly in the latex compound.  The product is vulcanized when the dipping process occurs.  The need of post treatments is determined by the nature of the dipped product.  This method can make bladders, rubber gloves, tubing, grips, and balloons.

There are three processes in molding.  They are compression molding, injection molding, and transfer molding.  The least expensive and oldest method is compression molding.  It can hold products with high viscosity and a poor flow.  This process on the other hand, consumes a lot of time.  O-rings, silicon, electrical insulators, seals, and wristbands can be made using this method. For more facts and information about rubbers, visit

Transfer molding limits the limitations of compression and molding.  The process commences with loading a blank in a chamber, and distributes it to various cavities.  Rubber is fast heated, thus easing its flow to other channels. 

Injection molding is another common process in molding.  Both the press and injection units have different controls, and are two separate entities.  An extruder unit is programmed in a certain way to serve several passes.  This ends up with several injection processes.  This eliminates the handling of blanks in the process. Hard cavities and flow channels can easily be filled.

By calendaring, the softened materials are forced into the middle of rotating rollers.  The materials are compressed by the rollers.  The distance between the cylinders affects the thickness of the cylinders. Calendaring is more expensive when compared to other processes, check it out!

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