Major Processes of Manufacturing Rubber.
When providing rubber products, multiple manufacturing processes can be used. Each of the processes is significant on its way in making a certain product type. 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 forward. 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. 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Latex dripping happens when the molds that are thinly walled are immersed in latex and then withdrawn slowly. The product can be dipped again into the compound to increase its thickness. Vulcanization happens when the product is through with the dipping process. Post treatment’s needs depends on 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, injection molding and compression molding. The oldest and cheapest 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 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. The injection and press units are two distinct units and have different controls. 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.
Calendaring works by forcing the softened material to the middle of rollers that are counter-rotating. The rollers will then compress the materials. The distance between the cylinders affects the thickness of the cylinders. Of all the other processes, calendaring is the most expensive.