High Efficiency Lab Crystallizer for Pet Masterbatch, Pet Granules, Pet Flakes

Infrared Technology

Infrared drying is a method of drying using radiation heat transfer. The electromagnetic wave generated by the infrared radiator travels straight at the speed of light to reach the material to be dried. When the frequency of infrared emission and the natural frequency of molecular movement in the material to be dried (that is, the emission wavelength of infrared rays and the absorption wavelength of the material to be dried) When matched, the molecules in the material vibrate strongly, and intense friction occurs inside the material to generate heat to achieve the purpose of drying.

Heat to the core. By means of short-wave infrared light the material is heated directly from the inside.

From the inside to the outside. The energy in the core heats the material from the inside out, so the moisture is driven from the inside to the outside of the product.

       T Particle > T Ambient

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

                                         PET before drying                                                                                              PET after drying

Lianda has designed 2 types of Infrared crystal dryer to satisfy different customers' requirement on the crystallization of PET Masterbatch. One is Continuous LIANDA 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 Lianda 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.


Advantages of Infrared crystal dryer

1) High efficiency, drying time in minutes instead of hours. The product remains in the drying process for only a few of minutes before being used for further production steps.
2) Low energy consumption. Infrared rays cause molecular thermal oscillations, which directly act on the core of the particles from the inside out, so that the moisture inside the particles is rapidly heated and evaporated into the circulating ambient air, and the moisture is removed at the same time. Energy consumption can be reduced by up to 45% compared to conventional drying systems.
3) Directly. Processing can be started, stopped and restarted easily.
4) Excellent mixing behavior of blends and no sticking of the material by virtue of the constant movement of the drum.
5) The drying time is short and the molecular structure of the material is not destroyed. Due to the excellent infrared absorption of plastic and moisture, heat can be absorbed inside the particle, and crystallization and drying begin inside the particle, rather than the heat/damage that has been carried for hours by heating from the outside.
6) In one step. Crystallization and drying.
7) Reproducible quality. Recipe management in the automation system.
8) Maintenance is convenient and simple. Access to all components at all times for quick and easy cleaning and easy material changes.
9) There are continuous type and batch type for customers to choose. According to material properties, moisture content and processing requirements, we have continuous type and batch type for customers to choose.

Applications of infrared dryer

PET:Crystallization and drying
Biodegradable materials:PLA/PBAT/PBS drying and crystallization.
PETG:Virgin and recycling material drying.
PPSU:Drying pf PPSU.
PEI:Drying of PEI
PEEK:Drying of PEEK
TPEE:Drying of TPEE
ABS/PC:Virgin and recycling material heating.
PE/PP:Heating of PE/PP.
PVC: Heating of PVC.
Drying of various plastic. Chips, pellets and fibers For free-flowing bulk material.                        

Q: What's the working principle of infrared crystal dryer(IRD)?
A: The rotating drum transports the plastic material through the length of the drum using an internal helix. During the transporting, the infrared lamp will heat the plastic material inside-out to crystallize and dry the plastic material.

Q: What's the final moisture?
A: less 50ppm

Q: Is the IRD continuous or batch working?
A: We have IRD on continuous working model and batch working model.

Q: What's the drying time?
A: Normally 20mins. The drying time can be adjustable by different material specific.

Q: What's the drying temperature?
A: The drying temperature can be adjustable by drying plastic type.

Q: What's the energy cost?
A: It will save 45% energy comparing with conventional dehumidifier and crystallizer.