The Most Common Rubber Manufacturing Processes.
There are numerous processes to use when manufacturing rubber. 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. Among the most common rubber manufacturing processes are latex dripping, extrusions, calendaring and molding.
Extrusion commences with feeding a vulcanized compound to an extruder. a dye carries the extruder upon putting it. The dye is important in the rubber shaping process. When the compound reaches the dye, it is forced through the extruder’s opening by the pressure from the process. 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Latex dripping happens when molds that are thinly walled are put into latex molds and later withdrawn slowly. You can re-dip the product in the latex with an aim to increase its thickness. After the dipping process occurs, the product is then vulcanized. The needs of post-treatment varies with the ppr5oduct’s needs. The products that result from this method include grips, bladders, rubber gloves, tubing, and balloons among others.
Molding is comprised of three processes. These are transferred molding, compression molding, and injection 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. This process however might be time consuming. Some of the products that result from this method are wristbands, electrical insulators, seals, silicon, and O-rings.
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 form of 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 minimizes handling blanks in the process. This eliminates the chances of handling blanks in the process. This can easily fill up hard cavities as well as flow channels.
Calendaring involves forcing softened materials to the middle of rotating rollers. The rollers will then compress the materials. The product’s thickness thus becomes determined by the gap between the cylinders. Of all the other processes, calendaring is the most expensive.