Advantages of a Fluid Bed Coater
A fluidized bed coating machine uses centrifugal force to generate granules and creates the most consistent, high-quality film possible. The temperature is used in a Importance fluid bed coater to control the thickness of the resulting film, assuring consistency and quality. This post will go over the pros and advantages of a fluidized bed coating machine. To learn more, keep reading! A fluidized bed coater has a number of benefits, some of which are listed below.
Fluidized Bed Coating Is An Efficient Process
Fluidized bed techniques are one of the most efficient ways to make thick-film coatings. They have a 100% transfer efficiency and cost less for initial investment and continuing maintenance. They can also coat a complete rack of components in a single dip. An overview of the fluidized bed process’ benefits is given in this article. Learn more by reading on. Also keep in mind that thermoset powder coatings can be coated using this procedure.
Because it uses core particles that aren’t quite flat and uses tiny droplet sizes to cover them, the method is incredibly effective. As a result, there will be no unwelcome agglomeration and the coating solution will atomize and adhere to the surface of the particles. Additionally, fluidized bed coating can create consistent, high-quality coatings that are highly abrasion and moisture resistant. The key to a successful fluidized bed coating process is selecting the ideal coating solution for your product. Additionally, the resin type utilized must be appropriate for the material being coated.
The fluidized bed coating procedure consists of several phases and includes both air and water. When the polymer droplets collide with the particles, a layer is formed on the substrate. Fluidized bed coating uses air and water as part of the coating solution in contrast to conventional coating techniques. Fluidized bed coating is a useful method for coating components with a variety of qualities since it uses air and water as the key ingredients in the coating solution. Below is a discussion of its benefits.
Particularly useful for continuous coating of wire screen, sheet, and small items is the electrostatic fluidized bed. It cannot effectively coat parts with deep recesses; its maximum coating range is three to four inches. However, it can coat 0.8 to three mils with great consistency on relatively high-speed lines. It is a very flexible and effective coating method. The greatest option for coating a range of products in your production process is fluidized bed.
Fluidized Bed Coater Produces A Film Of The Highest Quality And Uniformity
The generation of multi-particulate systems, which can be either solids or liquids, is appropriate for the use of fluid bed coating. Small particles can also be produced into capsules using the fluid bed coating method. Many different types of raw materials, including powders, crystals, and granules, can be coated using the fluid bed process. The advantages of fluid bed coating are listed below.
Based on a three-domain depiction of the bed, the fluidized bed particle coating procedure was developed. The bed is large enough to accommodate an enormous nozzle and stagnant areas where particles can be coated. With an increase in the rate of transfer to the spraying domain, the coating distribution becomes more concentrated. The coating process can be adjusted to achieve a particular particle distribution by changing the rate of transfer between the three domains.
Applying the same methodology to a range of materials allowed for the procedure’ validation. Stereomicroscopy was used to evaluate the film’s homogeneity and coating layer consistency. According to the results, a lot of coating cycles are necessary to create the ideal film morphology. The homogeneity of the film is also influenced by high temperatures and pressure. Additionally, the technique is economically viable since fluid bed coating creates a layer of the best quality and homogeneity.
The creation of final drug application forms benefits from the use of fluidized bed technology. The process can turn moist granulates or extruded goods into pellets. The pellets will have a limited grain size distribution, high bulk density, and low hygroscopicity. Additionally, this method creates film that is continuously and uniformly colored, which is necessary for the creation of high-quality pharmaceutical items.
Fluid Bed Coater Uses Centrifugal Force to Produce Granules
A specific kind of granulator called a fluid bed coater employs centrifugal force to coat items with a fine film. Large items, including powders, pellets, and crystals, are coated using this method. Through a disc that rotates at varying speeds, fluid enters the device. On a particle substrate, the resulting layers of powder are deposited. The liquids are then blown off. The items are then allowed to dry inside the product chamber when this layering procedure is finished. The products’ drying is facilitated by the huge volume of fluidizing air.
Utilizing two DOE investigations, the fluidized bed processor was assessed. The amount of delivered binder solution, spray rate, and separation between the spray nozzle and powder bed were all significant process characteristics that affected the final granule size and dispersion, according to the study’s findings.
Granulation, drying, and pellet coating can all be done in a fluidized bed coater. Dual-fluid spray nozzles and low-pressure air surrounding the nozzle are elements of its design. The same plenum that supplies the primary fluidization air also supplies this air. It can be altered to fit particular production and design specifications.
We assessed the distance between the spray nozzle and the powder bed, atomizing air pressure, and inlet airflow rate. The experiments’ findings, which were statistically significant, showed that these elements have a direct impact on the granules’ physical features. MMD rose along with the heat transfer coefficient and the likelihood of effective wetting due to higher atomizing air pressure and air flow rates. The powder bed expanded as a result of a higher air flow rate, lowering its quality.
Fluid Bed Coater Produces A Film At A Thickness Controlled By Temperature
Applying an aqueous solution to a multi-phase fluidized bed to create a film on a substrate is a multi-step procedure that creates a coating layer progressively over time. The fluidized bed coater uses both water and air as the sprayed polymer and concentrates on applying a coating solution.
Fluidized bed coating is a particularly effective procedure since it almost completely transfers the coating powder to the component. However, it’s crucial to remember that in order to get a constant film thickness, the coating powder needs to be pre-charged. This is so that huge portions can employ a large quantity of powder. Electrostatic spray and fluidized bed coating have comparable heat needs.
Many industries, including the manufacture of food goods, have examined the use of fluidized beds. Diced vegetables, sliced meats, and other sticky goods have been dried using a swirling bed of glass beads and activated alumina. Using this technique, food items like meat, shrimp, and mushrooms have all been dried. These goods are suitable as snacks due to their reduced fat content.
The main variables influencing the film thickness are the bed’s relative humidity and the size of the droplets. The amount of particle coating depends on the bed’s relative humidity. An effective experimental programmer can be created thanks to these elements. A better coating quality is produced by a higher DStv. The consistency of coating quality is not guaranteed by droplet size, though. It could lead to unequal coverage in the final product.
Fluid Bed Coater Does Not Require A Post Heat Cycle
The current invention relates to a continuous method of using a fluidized bed equipment to cover fertilizer substrate particles. The continuous process might involve drying the particles in between coating applications and preheating the particles. The coating zone may contain an agglomeration-preventive conditioning ingredient if post-heating is necessary. The fluidized bed’s coating zone is followed by the departure of the particles. The particles may be gathered in a hopper after coating for packing or additional processing.
As the fluidizing gas, air is employed. The air moves through the porous plates 80, 81, and 82, applying sufficient pressure to allow the particles to move without restriction. The water in the latex substance evaporates as the air is heated. As the air leaves the coating zone, latex is removed using water scrubbing. If required, the air can be recycled back into the air supply conduit 83.
Sintering, which can cause the coating to shrink or sustain damage, is not necessary with a fluid bed coating machine. Additionally, this method enables post-heating, which is useful if the powder has a high melting point. Additionally, it can be used to cover big, uneven things like pipe fittings. The fluid bed coating procedure starts by heating the component over the powder’s melting point. It is then plunged into the fluid bed, where it floats below the powder’s surface. The coating’s thickness is determined by how much heat the part retains after being removed from the fluid bed. A coating of sugar or another material may be the end result.
All types of particles, including solids, porous materials, and liquid-absorbing materials, can be coated using the fluidized bed coating technique. There are more uses for this encapsulating technology than any other. The fluidized bed coater is a commercial device used to coat solid food ingredients with fat. This could be the main use for fluidized bed coaters in the food sector. Additionally, they can cover molten fats.