Plastic Granulator: The Ultimate Guide to Faqs 2022

2022-04-08 12:45:54

Plastic Granulators are used for crushing plastic, recycling, destroying, and using it again. The company can even break down more oversized items. A granulator is used for recycling services for commercial locations and others interested in reducing the amount of waste sent to landfills.

I put this guide together to share my knowledge and expertise with you. The goal of this guide is to be the go-to resource on Plastic Granulator: The Ultimate Guide to Faqs 2022.


What is a Plastic Granulator?

The Plastic Granulator is a plastic recycling machine used to process plastic and make granules. The device can act as a plastic shredder, plastic crusher, and plastic grinder. It is suitable for materials like waste plastics and waste rubber products.

The Plastic Granulator is an essential part of the plastic recycling process. This is because it allows for the re-use of valuable materials otherwise deemed as waste products from manufacturing industries, construction sites, etc. These are then processed into granules that can be used as raw materials for other production processes.

plastic granulator


How to Choose the Right Plastic Granulator?

The plastic granulator is an essential part of the recycling process. It can turn a large amount of waste plastic material into small plastic pellets that can be resins, nylon, and other shots.

So how to choose the proper plastic granulator? There are some tips you should know before you get one.

1. First, consider the size of your factory and available space (including height). This will determine the size of your plastic granulator machine.

2. Consider whether to use water or air cooling system; this depends on your conditions, such as power supply, factory size, and area. You may need to install an air compressor or a cooling tower if you choose an air cooling system or water cooling system.

3. Purchase a pelletizing system with different screen sizes to ensure that you can make different sizes of pellets for other purposes. This is important, mainly if you use the shells for molding purposes since different molding machines require different pellet sizes (e.g., 0.5 mm-2 mm for molding purposes). This feature is not needed if you want to sell your pellets directly to some customers, such as companies that produce composite materials.


In Which Industries Are Plastic Granulators Used?

Plastic granulators are used in the plastics and food industries. They are used to chop plastic into smaller granules of different sizes. Plastic granulators can recycle plastic waste from manufacturing or scrap plastic from other methods.

Food Industry

The food industry uses plastic granulators to chop food products into tiny pieces for easier handling. Food products such as cheese, cooked meat, fruit, and vegetables must be chopped into smaller pieces before being packaged and sold in supermarkets. Granulators are usually fitted with blades that cut the food up into small pieces that can be made into other food products. For example, cheese is often chopped up by a granulator before being added to ready meals or pasta dishes.

Plastics Industry

Granulators are also widely used in the plastics industry to chop plastic waste down into smaller pieces for recycling or reprocessing. Plastic waste is produced on production lines or at other stages of the manufacturing process, and it has to be disposed of or recycled somehow. Granulators make this process cheaper and more effective than landfill sites or incinerators.

Granulators need to be cleaned regularly for them to work correctly, and they require regular maintenance so that they don't break down unexpectedly.


How Much Does a Plastic Granulator Cost?

Finding a plastic granulator is one of the first steps when starting a new business or replacing old equipment. It can be straightforward to get bogged down in the details of each machine, trying to find the perfect fit, which can leave you overwhelmed and frustrated.


Before you start shopping, consider the following details:

What kind of plastics do you need to process?

How much material will you be processing at any given time?

Will you need a hopper or other attachments?

The cost of a plastic granulator can vary depending on the size, brand, and features needed. While most machines are sold at different conditions and prices, the average cost of a plastic granulator ranges from $5,000 to $70,000. The most expensive plastic granulators can cost up to $200,000, while the cheapest ones can cost as low as $2,000.


How Does a Plastic Granulator Work?

The principle of plastic granulator is mainly based on the theory of impact crushing, and its working principle can be described as the following. The extruded material from the extruder enters the granulator through the feeding hopper, is rapidly crushed by the high-speed rotating blade, and then enters the rotating screen drum to realize coarse selection and fine selection. The crude material is discharged from the bottom of the screen drum, while the large particles are pre-crushed by the blade to achieve recycling. As required, the coarse material can be directly transported to a mixer or a dryer.


The principle of plastic granulator:

1. Crushing chamber design

Unique two-layer non-breaking design, large oblique feeding hopper, spindle assembly using a floating main shaft, eccentric sleeve using a spherical surface design;

2. Gear transmission system

Use high-strength gears for precision machining, thick gear shafts for tempering and quenching treatment, spiral tooth profiles for uniform force transmission;

3. Lubrication system

Using automatic lubrication pump, forced lubrication cooling system to ensure that all parts are adequately lubricated; combined with safety devices such as pressure gauges and oil level alarms for timely maintenance of the machine;

4. Hydraulic opening device

The hydraulic pump station is placed on one side of the upper body of the crusher, and the hydraulic pump station drives the hydraulic cylinder to move the moving cone up or down to complete the adjustment and locking of the discharge port size;


What Are the Functions of Screw and Barrel in Plastic Granulator?

The screw and barrel of the plastic extruder are the main parts of the plastic extruder, and their function is to mix, melt, transport, and pressurize the plastic. The screw and barrel of the plastic extruder have a significant influence on product quality, production efficiency, and material consumption. The screw and barrel are mainly composed of a head, feed section, compression section, metering section, transition section, and tail. Different functions are mainly realized by different sections.


The function of the screw is to transport, compress, melt, homogenize and extrude plastics.

1) Transportation role: transporting mixed materials from one end to another;

2) Compression role: increasing the pressure in front of the melting section;

3) Melting role: ensuring that materials are completely melted;

4) Homogenization function: ensuring that the materials are evenly distributed and no high local concentration occurs;

5) Extrusion function: Extrude material in a molten state through a mold.


The barrel, also called the barrel rotor, is the cylindrical portion of the plastic granulator. The barrel contains the grinding components (pulverizer), as well as two sets of rollers and a set of rollers that can be adjusted to various angles.

The barrel rotates inside the plastic granulator. The rotation is powered by a motor or by motor power. The motor rotates at different speeds depending on the type of plastic material being processed.

The main functions of the barrel in the plastic granulator are: to load small pieces of raw material into the machine, rotate and grind them into small pieces, remove unwanted materials from it, and separate the remaining components from it.


How Long Does It Take for the Plastic to Be Processed into Particles?

The time required to process the plastic depends on the type of plastic. The processing time ranges from a few days to a few months.

In our experience, the majority of the time is spent in the grinding process, with a portion dedicated to drying, which can sometimes be eliminated by using a dryer. The granulating process is typically much faster than the grinding process.

The main factors affecting the production cycle of plastic products are:

1. The complexity of the plastic product structure,

2. Whether there are special requirements for raw materials,

3. Whether other auxiliary processes are required after molding.


What Kind of Granulator Blades Are Best?

It's tempting to go for the cheapest granulator blades, but that can be a false economy; cheap blades just don't stand up to the wear and tear of production grinding. If you need to replace your blades more often, you'll end up paying more in the long run.

The best granulator blades are made from high-quality materials, built to last, and backed by excellent service from the manufacturer. They're worth paying a little bit more for.

what kind of granulator blades are best?

When it comes to granulator blades, there are a few things to consider:

Size of the blade.

Type of material being cut.

How often the blades will be used, and what environment they are used in?

The size of the blade is important as it determines how much power you'll need from the granulator to cut through the material. A large knife will require more horsepower than a smaller knife. Think about buying a larger knife for tougher materials.

Larger knives also tend to be thicker than smaller knives. Thicker knives will last longer than thinner knives because they're less likely to bend or break due to excessive pressure. They can handle high-pressure environments better and resist wear and tear over time. This means more cuts per dollar spent.

The most common type of knife is known as a High-Speed Steel (HSS) knife, which is made from high carbon steel that is alloyed with tungsten, molybdenum, and chromium. HSS knives are very hard and wear-resistant and can be sharpened to a very fine edge. However, HSS knives will eventually dull due to the impact forces involved in cutting.

Carbon Steel knives are also commonly used, but they are not as hard as HSS knives and are usually less expensive. The main disadvantage of using carbon steel is that they do not last as long as HSS knives.


There are several things you can do to make sure your granulator blades last as long as possible. You should:

Make sure that your blades are properly aligned before you start cutting.

Inspect them regularly for signs of wear and tear.

Sharpen them regularly (ideally after every use).

Replace them when necessary (if they become too worn or if they break).


How to Reduce the Noise of Plastic Granulators?

It is a big problem in the noise of plastic granulators. The noise of the plastic granulator is mainly due to the impact between the materials, the friction between the cutter teeth and the lining and sieve, etc., so how to reduce the noise of plastic granulator? The following is a professional answer for you.


Plastic granulator noise reduction method:

1. Reduce the movement speed of cutter teeth;

2. Choose slow cutting speed;

3. Install sound insulation cover on the motor, reducer, and outside cover;

4. Install elastic cushion in transmission part;

5. Reduce material feeding speed and strengthen sealing;

6. Choose cutting mode with low noise, such as positive cutting, negative cutting, or rotary cutting;

7. Improve design precision and reduce wear of parts;

8. Install vibration isolation device under machine base;

9. Pay attention to selection and installation when buying equipment; pay attention to whether it is equipped with an automatic lubrication system for bearing lubrication, etc.;


Which Type of Cable for Plastic Granulators is Suitable?

The type of cable used in Plastic Granulators will make a big difference in the performance and longevity of your equipment. When choosing which kind of cable to use, there are several factors to consider:

what is the size of the product you need to process?
What kind of materials is being processed (for example, paper or cardboard)?
How often will you be using the machine, and where are you going to place it?


There are several types of cables on the market that are suitable for plastic granulators.

● Flat yellow rubber cable: This kind of cable is mainly made of flat yellow rubber cable, which has good mechanical properties and high-temperature resistance, so it is suitable for plastic granulator use.

● Soft sheathed flexible cable: This kind of cable is mainly soft sheathed flexible cable. It has good softness, durability, and bending resistance. It is suitable for places with poor wiring conditions or frequent movement.

● Single-layer air-cooled wire: Compared with ordinary wires, single-layer air-cooled wires have higher thermal conductivity and stronger heat dissipation capability, which can effectively reduce the temperature rise during use, so they are suitable for plastic granulators use.

● Heat-resistant multi-core cable: Heat-resistant multi-core cable is a kind of power cable with fire-resistant performance; its main characteristic is: that the high temperature does not soften it, and the low temperature does not make it brittle.


What is the Difference Between a Plastic Granulator and a Shredder?

Plastic granulators and shredders are both size reduction machines that process plastic waste into smaller particles. They're often used to recover bulk scrap, separate different types of plastic, and reprocess waste material into new products.

The difference between a granulator and a shredder in their cutting process. Shredders cut materials into long pieces, while granulators cut them into much smaller pieces, almost like grains of rice.

Shredders can cut many different materials, but they are most commonly used for larger plastics that are difficult to handle and break down. This includes things like film, fiber, pipe, car bumpers, crates, and more. Granulators are typically used for wood, paper, and other types of recyclable materials. They can also be used for smaller plastics that have already been shredded in a primary shredder.

If you are looking to get information on Plastic granulators, this is the right place to find them. We have found everything possible to provide as much detail on Plastic Granulator as possible. We hope that this Plastic Granulator overview has proved helpful and you feel ready to acquire some extra knowledge about it. Our goal is for you to leave this article with enough information, so you do not need to obtain a Plastic Granulator or waste any additional time seeking it.

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