Top 3 Guidelines for Choosing a Plastic Crusher

Buying a suitable plastic crusher has a lot to do with the crushing effect of the crusher and the service life of the equipment.
The following selection tips will teach you how to choose the right plastic crusher for you:

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1. How to choose the right knife type?

Claw cutter saddle
The claw type blades are suitable for the crushing and recycling of various plastics, especially for larger of plastic head material or various types of harder plastics (such as injection lump plastics, shoe last, etc.), and the effect is better. Plastic products such as PVCPETABSPPPEPCPMMAPAPS are recommended to useclaw type plastic granulators.

Flake cutter saddle
The flake type blades are suitable for crushing general plastics like sheets, tube, profiles, plates and packaging materials, and sprue materials, also runners, etc. PVCPPPCPS and other plastic products are recommended to useflake type plastic granulators.

Flat cutter saddle
The flat type blades are suitable for recycling of boxes, thin pipe, blow molded parts, plastic bottles, plastic shells, leftovers from nozzles and various thinner plastic products. Flat plastic crusher is recommended for PE, PET and other plastic products.

V type cutter saddle
The V type blades are suitable for the recycling of various hollow products, leather, films and other plastics.

2. How to choose the right model?

According to the size of the crushed product
The general crushed material can enter the crushing chamber. If it is a thick or hard defective product or a plastic head material, it is better to use a model with one or two levels of motor in combination with the output.

According to the size of thegrinding chamber
The size of the crushed defective products or the nozzle should not be larger than the size of the grinding chamber. If it is to crush long trays or pipes, etc., it is recommended to choose a inclined plastic crusher, without cutting, and directly crushing.

According to production demand
The grinding capacity of plastic crushers varies according to different models. If you are a customer who needs a large amount of crushing, on the premise that the product can enter the crusher, you should select the model according to the output of the granulator. The output of ordinary plastic can be found in the specification table. When crushing mineral water bottles, plastic bags and film products, the output is only about 1/3 of the minimum value on the specification table.

According to application scenarios
Choose different types of crushers according to different application scenarios. For example, for centralized crushing and recycling of materials, standard plastic crushers can be selected according to the output and material characteristics; if they are directly recycled by beside-the-press crushing, you can choosebeside-the-press granulators. Online plastic crusher with the extraction type can greatly reduce the labor cost, and the crusher is automatically recovered and reused.

3. How to choose the rightblade material

9CiSi
9CiSi is suitable for crushing ordinary plastic products.

Cr12MoV
Cr12MoV is a cost-effective material, suitable for hard plastic materials, plastics with fiber, and heavy plastic blocks to be crushed, with better crushing effect and longer life.

If you are looking for more details, kindly visit plastic crusher machine.

SKD-11
SKD-11 has better performance than Cr12MoV. SKD-11 can be easily completed, and the price is more expensive.

Even though granulation may not have been an essential part in the plastics size reduction process a few years ago, granulation is an opportunity to provide customers with regrind and recycled materials in products. However, selecting the right plastics granulator to fit your needs can be challenging. The wrong granulator can even be risky when used in certain environments or situations.

Cumberland has been providing plastic recycling industries with granulators and shredders since and we take pride in offering customers durable, reliable products.

Intended Use

The type of granulator that will fit your needs the best will depend on its intended use. Without the proper size granulator and components, plastic that is either too big or too small won&#;t be properly processed, which can result in higher energy use, additional dust and noise, and increased wear on the knife. To ensure that you select a plastic granulator that fits your intended use, the size of the equipment is an important factor. In order to find the right size granulator, consider these things:

• Application: There are different demands on the granulator depending on the process, whether it&#;s blow molding, injection molding, extrusion, or recycling.
• Material: What type of plastic is being processed? Different plastics may react differently in a granulator.
• Feeding Method: Methods of feeding include manual, conveyor, roll feeding, robot, and others.
• Product: The granulator may need to be configured differently if bottles or sheets are being processed.
• Dimensions: The size and thickness of the product being processed will also come into play.
• Capacity: How much material can be processed per hour?
• Screen Size: What size will the processed material be?

Maintenance

Plastic granulators need to be maintained regularly and thoroughly to ensure a high-quality product and to reduce dust in the material as well as in the air at the facility. There are several reasons why granulator maintenance is challenging and may not be completed as often as it should.

• The equipment may not be designed with maintenance in mind
• Instruction manuals may be poor or inadequate
• Proper maintenance can be time-consuming, resulting in increased downtime.
• It&#;s simply hard to find proper maintenance services

Maintenance of the granulators knives is an especially challenging task, but it is also one of the more important tasks. When the knives are worn down or improperly spaced, it can result in excess dust and fines. When the machine does have sharp knives, it can improve energy efficiency and cut the material more effectively, helping to reduce dust, tearing of the material, and noise.

A plastic granulator should feature multiple safety switches, power-assisted tilt-back hoppers, rotor locking devices, and screen cradles and screens that are easy to access and remove. Equipment operators should also have a clear visual path in order to inspect the equipment in cases where the granulator needs to be cleaned in between each processing run.

Knife Design

There are several factors to consider in terms of knife design in a plastic granulator, including the number of knives, how they are arranged, the tip angle, speed, and sharpness. The overall design of the knives can impact the quality of the final granulate and the efficiency of the equipment.

Knives are typically mounted either on a stationary bed or directly on the rotating rotor. How much space is between these sets of knives will depend on the size and type of plastic being processed. For softer, more ductile materials, a smaller space will increase efficiency and produce a cleaner cut.

• The angle of the knives also depends on the type of material being processed.
• An angle that produces a scissor cutting action will help improve throughput while using less horsepower, produces less noise, and reduces dust and fines.
• Knives with low angles and blunt tips are often used for more brittle materials
• Knives with high angles and sharp edges are used for softer materials.

If you need granulates of the same size, a slower knife speed will increase the production of uniform material, lessen noise, and reduce wear on the knives and cutting chamber. A high-speed rotor increases the risk of the material becoming frayed or simply rolling around in the machine.

Rotors

The type of rotor in the granulator will depend on what is being processed. There are four main types of rotors used in plastic granulators:

• Open: Generally used for heat-sensitive resins or feedstock, open rotors provide the most air-flow through the cutting chamber.
• Closed or Solid: In this design, there aren&#;t any spaces between the knives and the shaft, improving the strength of the knife mounting arrangement. This also allows the granulator to cut through thick feedstocks.
• Staggered: Used for cutting heavy materials, staggered rotors are available in both closed or semi-closed configurations.
• Staggered/Segmented: Also used for cutting heavy materials, staggered/segmented rotors increase the number of cuts per revolution.

The plastic granulators and shredders from Cumberland are known in the size reduction industry for being rugged and reliable. We offer beside-the-press, central, heavy-duty, and thermoforming plastic granulators to best fit your processing plant&#;s needs. Our granulators are configurable, can process small and high-capacity runs, and can process a wide variety of material. They are also easy to maintain, ensuring they get the care and service they need for a long lifespan. Cumberland also offers plastic granulator refurbishment to help you maximize your return on investment as well as replacement parts and OEM upgrades.

Get in touch with Cumberland for all of your plastic granulator and shredder needs.

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