The importance of granulation and size reduction continues to grow today. And a granulator is a machine that cuts and reduces the size of scrap plastic into smaller granules for easier management. The generated granules could then be utilized in other plastic manufacturing or sold in the open market. You want to identify the right machine when searching for a granulator to help manage material costs more efficiently, produce recycled materials, and improve the bottom line.
This article looks at important issues on the basis of which the suitability of a granulator for cutting scrap plastics may be assessed:
Understand Your Application
Why People Think Tools Are A Good Idea
The first thing that should come to your mind when selecting the appropriate granulating machine is your intended application. First, describe the material in terms of how much of it you need to chop into size as well as how bulky the scrap parts are. It’s very helpful to figure out the physical size and shape of these components. Then, consider the material itself. Different materials don’t have the same reactions; for example PVC and glass filled polymers have different characteristics from polypropylene. And if you’re using several feed streams, it helps to work out percentages for them. In case we’re taking about 95% sprues and runners plus the once-in-a-blue-moon purge, it’s more efficient to cater for the runners and sprues together while determining a disparate solution for the purge. As far as granulation is concerned, there’s barely a single system that’s seamlessly all in one, and any consistent use of a single solution for all solutions may result in effective operations and higher costs over the long term. On the other hand, taking into account all pertinent aspects of intended use and materials becomes crucial in the identification of the ideal rotor type, chamber size, and capabilities for horsepower necessary to for flawless execution of the task.
The rotor is one of the most important granulator parts to consider when buying your machine. You may prefer an open rotor for processing fragments with slim walls. The open design provides for streamlined flow of materials. A closed rotor is ideal for large, thick scraps, and a staggered design, which supports more cuts per revolution, is a compromise between the other two designs.
You may also consider the type of engagement between the fly knife and bed knife because it has a relationship with horsepower requirements. Counterbalancing the two knives generates a scissor cut. You could select a machine with two bed knives, or prefer one with three or four for improved cutting action. Also, consider chamber size and shape, of which can affect the size of cuts the knives can make with each action.