Plastic Dryer Machine


PET Masterbatch Crystallization and Dry

Infrared Crystal Dryer to combine drying and crystallizing for plastic resin: PET(Bottleflakes, granules, flakes), PET masterbatch, co-PET, PBT, PEEK, PLA, PBAT, PPS, TPU, TPE etc. in one continuous operation. Drying time 20mins, save 2/3 energy cost, final moisture 50-70ppm, helping manufactures of bottles, film, mono filament, meltblown fabric and sheet etc.

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PET Masterbatches crystallization by Infrared crystal dryer

Infrared crystal dryer continuous processing

IRD Technology are often used in PET Application such as Thermoforming sheet, Strapping, Cast film and recycling production.

OD TECH has designed 2 types of Infrared crystal dryer to satisfy different customers’ requirement on the crystallization of PET Masterbatch. One is Continuous IRD which can satisfy the companies who run rather large capacity of plastic masterbatches and don’t change the color very often. Another is Batch IRD which can satisfy the companies who run smaller capacity like 80-200kg/h with frequent color change. Such type design supply the proper and sufficient cleaning as well as quick start up times.

The ADVANTAGES of IRD crystallize PET color masterbatch

No. Infrared Crystal Dryer Conventional Crystallizer
1 Easy to clean and change color
The drum can be opened completely,no hidden spots and can be cleaned easily with a vacuum cleaner
Have to be completely disassembled,cleaned and fixed
2 Rotary drying system, its rotating speed can be increased as high as possible to get an excellent mixing of pellets. It is good in agitation, the masterbatch will not be clumped Poor agitation,easy to be clumped
3 Can satisfy different type of Masterbatch (Drying temperature and time can be adjustable by the property of raw material) The drying temperature is fixed
Infrared rotary dryer is designed with sophisticated temperature measurement. The material and exhaust air temperature are continuously monitored by sensors. If there is any deviations,PLC system will adjust automatically.
Recipes and process parameters can be stored in the controlling system to ensure opimal and reproducible results.
4 Crystallization time 15-20mins depends on the material kind

Need 2 hours or more

5 Energy consumption of Infrared dryer is only 1/3 of Convention crystallizer

How our Infrared dryer to crystallize PET Masterbatch?

Infrared crystal dryer continuous processing

Processing Explanation

The infrared rays caused molecular heat oscillation acting directly to the core of the particles from the inside-out, the moisture inside the particle are quicly heated and vaporized into the circulating ambient air to remove the humidity at the same time.

1) At first step, the only target is to heat up the material to a preset temperature

Adopt relatively slow speed of drum rotating, the Infrared lamps power of the dryer will be at a higher level, then the PET Masterbatch will have a fast heating till the temperature rises to the preset temperature.

2) Crystallization step

Once the material gets to the critical crystallization temperature, the speed of the drum will be increased to a much higher rotating speed to avoid the clumping of the material. At the same time, the infrared lamps power will be increased again to finish the crystallization. Then the drum rotating speed will be slowed down again. Normally the crystallization process will be finished after 15-20mins. (The exact time depends on the property of material)

3) After finishing the crystallization processing, the IR Drum will automatically discharge the material and refill the drum for the next cycle

The automatic refilling as well as all relevant parameters for the different temperature ramps is fully integrated in the state-of-the-art Touch Screen control. Once parameters and temperature profiles are found for a specific material, theses settings can be saved as recipes in the control system.

Plastic IRD Dryer/Infrared dryer Model

Model Number IRD-80 IRD-200 IRD-300 IRD-500 IRD-1000
80-120 200 300 500 800-1000
Installation Heating power
18 27 36 48 90
Drying time Normally 20mins
And the drying time can be adjustable by PLC on customer’s requirement on final moisture
Control By Siemens Touch Screen PLC system
Processing Dehumidifier and crystallized at a time
Final moisture 50-70ppm
Heating way Infrared lamps
Energy saving Up to 45%
Space saving Up to 300%
Operation Faster to start up
Quick change-over and shutdown time

Machine photos

Infrared crystal dryer continuous processing


In order to ensure the accuracy of each part, we are equipped with a variety of professional processing equipment and we have accumulated professional processing methods over the past years.

Each component before assembly needs strictly control by inspecting personnel.

Each assembly is in charged by a master who has working experience for more than 20 years.

After all the equipment are completed, we will connect all the machines and run the full production line to ensure the stable running in customers' factory.

Our Service

We will provide testing if the customer comes to visit factory to see the machine.

We will provide detail machine technical specification, electric diagram, installation, operation manual and all the documents which customer needed for clearing customs and using the machine.

We will provide engineers for helping installation and training the workers at customer's site.

Spare parts are available when they are needed. Within warranty time, we we will provide spare parts free, and over warranty time, we will provide spare parts with factory price.

We will provide technical support and repair service in the whole lifetime.

Application examples

Drying and crystallizing of PET to 50PPM

Drying and crystallizing of PLA

Drying of TPU

Drying and heating of PE pellets to remove volatiles

Crystallization of masterbatch in small batches

Drying and crystallizing of PET for pelletizing or sheet extrusion

Drying and crystallizing of PLA for pelletizing or sheet extrusion

Drying and crystallizing of PPS Pellets, amorphous Co-Polyester

Drying, crystallizing and heating of bulk materials