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How to Choose a Plastics Granulator: A Guide

Granulation and reduction of size keeps increasing in significance every day. But a granulator is needed in the chopping of scrap plastic and reduction of size into more manageable tiny granules. The generated granules could then be utilized in other plastic manufacturing or sold in the open market. It’s in your best interest to pick the best machine when looking for a granulator as it can guarantee effective management of materials costs, facilitate the generation of recycled content, and increase your profits.

Here are some essential considerations in the selection of a granulator for chopping scrap plastics:

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Know Your Application
What I Can Teach You About Plastics

The job for which you’re selecting the ideal granulating machine is the first issue you need to understand. Firstly, define the material in relation to the amount of it you need granulated to size and the bulkiness of the scrap parts. The physical size and form of the parts are critical to identify. Next, focus on the material itself. Different materials don’t have the same reactions; for example PVC and glass filled polymers have different characteristics from polypropylene. And when you’re utilizing a number of feed streams, it is important to assign them percentages. When you’re handling roughly 95% sprues and runners in addition to the sporadic purgings, it’ll be more effective to have a solution for your sprues and runners while allocating another system 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. Having said that, consideration of all essential elements of your application and materials proves important in the selection of the right rotor type, chamber size, and horsepower capacity needed to deliver superior results.

A Look at Granulator Parts

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 concept lets materials flow effectively. The best for large, thick scraps is a closed rotor design, while a staggered rotor, which has more cuts for each revolution, is a hybrid of 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. Similarly, don’t forget chamber size and shape as these have a bearing on the extent of cut the knives can deliver with each action.