Top 4 Rubber Manufacturing Processes.
There are numerous processes to use when manufacturing rubber. Each of the processes is significant on its way in making a certain product type. Knowing the processes can assist you in knowing their prices and tradeoff effects. The most common rubber manufacturing processes are Extrusion, latex dipping, molding, and Calendaring.
Extrusion begins by dipping an extruder with a vulcanized compound. A dye carries the extruder forward. The dye is usually a special manufacturing tool that is mean t to shape the rubber. 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. Before blending a product to vulcanization, it ought to have a cure package.) The rubber might shrink or swell after vulcanization. The length of the rubber might change after vulcanization. Extrusion manufacturing is significant because it produces a high volume of the products at a lower production cost.
Latex dripping happens when molds that are thinly walled are put into latex molds and later withdrawn slowly. To increase the thickness of the product, it can be re-dipped slowly in the latex compound. After the dipping process occurs, the product is then vulcanized. Post treatment’s needs depends on the nature of the dipped product. The products that result from this method include grips, bladders, rubber gloves, tubing, and balloons among others.
Molding is comprised of three processes. They are compression molding, injection molding, and transfer molding. The oldest and cheapest method is compression molding. The advantages of using this method are the suitability of rubber compounds that have a large surface area, and it’s suitability in rubber compounds that have a poor flow property and a high viscosity. This process on the other hand, consumes a lot of time. This method can make electrical insulators, wristbands, O-rings, silicon, and seals.
Transfer molding reduces the limitations associated with compression molding. The process begins with a blank chamber that moves rubber to other chambers. 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. This ends up with several 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. 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.