Major Processes of Manufacturing Rubber.
There are various methods of manufacturing rubber. Every manufacturing process has its advantages in making an ideal type of product. 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 commences with feeding a vulcanized compound to an extruder. 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 by the pressure of the system through the extruder’s opening. For it to become useful, the extruded product is vulcanized. This process is usually of a lower production cost as well as a high output.
Latex dripping happens when molds that are thinly walled are put into latex molds and later withdrawn slowly. The product can be dipped again into the compound to increase its thickness. The product is vulcanized when the dipping process occurs. The needs of post-treatment varies with the ppr5oduct’s needs. This method can make bladders, rubber gloves, tubing, grips, and balloons.
Molding is comprised of three processes. These are transferred molding, injection molding and compression molding. The least expensive and oldest 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. The process might however be time consuming and with a low rate of production. This method can make electrical insulators, wristbands, O-rings, silicon, and seals.
Transfer molding reduces the limitations associated with 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. The injection unit and the press unit acts as two distinct entities with separate controls. An extruder unit serves several passes by moving in a certain programmed way. The result of this is short injection processes. This minimizes handling blanks in the process. This eliminates the chances of handling 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 distance between the cylinders affects the thickness of the cylinders. Calendaring is more expensive when compared to other processes.