Major Processes of Manufacturing Rubber.
When providing rubber products, multiple manufacturing processes can be used. Each process is good on its way in making a certain rubber category. Knowing the processes can assist you in knowing their prices and tradeoff effects. 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 important in the rubber shaping process. The compound is forced into the opening of the extruder by the process’ pressure, after putting the dye. For it to become useful, the extruded product is vulcanized. Every rubber compound ought to have a cure package that is usually blended before vulcanization.
Latex dripping includes dipping thinly walled molds into latex and slowly withdrawing them. The product can be dipped again into the compound to increase its thickness. After the dipping process occurs, the product is then vulcanized. 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. These are transferred molding, compression molding, and injection molding. The least expensive and oldest method is compression molding. It is suitable for products that have a poor flow, and those that have a high viscosity. 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.
Transfer molding helps in minimizing the limitations of compression molding. The process starts with a loading chamber that is blank, and distributes to other 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 serves several passes by moving in a certain programmed way. The result of this is short injection processes. This eliminates the handling of blanks in the process Flow channels and hard cavities can be filled by this easily.
Calendaring involves forcing softened materials to the middle of rotating rollers. Rollers compress the materials. The thickness of the materials is a result of the thickness between the cylinders. Of all the other processes, calendaring is the most expensive.