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Infrared Crystal Dryer FAQ

Infrared Crystal Dryer

Q: What’s the working principle of Infrared crystal dryer?

A: The frequency of infrared is about 1012 C/S ~ 5x1014 C/S, which is part of electromagnetic wave. Near infrared wavelength is 0.75~2.5μ and travels straight at the speed of light, and it goes around the earth seven and a half times per second (about 300,000 Km/s). It can be seen from the light source It is directly transmitted to the material to be heated, causing physical phenomena of absorption, reflection, and transmission.

The infrared crystal dryer is the latest drying technology developed at present, and the infrared crystal dryer only needs 8-20 minutes, crystallization and drying are completed at one time, saving time, electricity, good drying effect, convenient maintenance and low cost, which is the highest efficiency at present , The best choice for low energy consumption drying method.

Q: What’s the drying temperature?

A: The drying temperature can be adjustable by material’s drying requirement. Adjust scope: 0-350℃

Q: What’s the drying time?

A: Depends on material’s initial moisture and final moisture you want to get.

For example: PET sheet scrap Initial moisture 6000ppm, final moisture 50ppm, drying time needs 20mins.

Q: Can Infrared crystal dryer increase IV?

A: No. It will not affect the viscosity of PET

Q: What’s colour of Crystallized PET Pellets?

A: Will be like milk colour

Q: Is it Crystallized and Dehumidifying drying in one step?

A:Yes

Q: What’s the drying temperature of PETG ?

A: Different drying temperature adopting while PETG produced by different manufacturer. For example: PETG k2012 produced by SK Chemical, the drying temperature of our IRD is 105℃, drying time needs 20mins. Final moisture after drying is 10ppm (Initial moisture 770ppm)

Q:Do you have test center? Can we take our sample pellets for testing?

A: Yes, we have the test center to supply free testing

Q: What’s the drying temperature and How can I set the temperature?

A: Drying temperature can be set according to the characteristics of the raw materials.

The temperature set scope can be 0-400℃ and the temperature will be set on Siemens PLC screen

Q: What’s the temperature measurement you are using?

A: Infrared temperature camera ( German Brand) to test the material temperature. The error will not exceed 1℃

Q: Is the Infrared Rotary Dryer Continuous processing or Batch processing?

A: We have Both types. Usually the continuous IRD, the final moisture can be 150-200ppm. And the Batch IRD, the final moisture can be 30-50ppm

Q: How many time it will take for finishing drying and crystallization the material?

A: Usually 20mins.

Q: What’s the IRD can be applied for ?

A: It can be pre-dryer for

• PET/PLA/TPE Sheet extrusion machine line

• PET Bale strap making machine line

• PET masterbatch crystallization and drying

• PETG Sheet extrusion line

• PET monofilament machine, PET monofilament extrusion line,PET monofilament for broom

• PLA /PET Film making machine

• PBT, ABS/PC, HDPE, LCP, PC, PP, PVB, WPC, TPE, TPU, PET (Bottleflakes, granules, flakes), PET masterbatch, CO-PET, PBT, PEEK, PLA,PBAT, PPS etc.

• Thermal processes for the removal of rest oligomeren and volatile components.

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