At K 2022, Kreyenborg will offer process engineering solutions for everything related to infrared technology

The display platform’s family of infrared rotating tubes is headed by the constantly operating IRD, an example of the process engineering capabilities of this technology. In direct extrusion in PET recycling, the IRD is for crystal The drying of PET flakes and granules is the initial stage in the extrusion process. Short dwell times while at the same time low energy consumption are achieved by rapid heating with direct heat input from infrared heaters. However, simultaneous permanent mixing in the rotary kiln also opens up other applications in heating and drying, particularly re-milling from recycling.

IR-Clean, which is suitable for food rPET recycling process, will also be presented at the exhibition. FDA and EFSA standards are met for 100% rPET content in food packaging, which means the system is suitable, for example, as a retrofit for PET flat film lines or PET regulating lines.

High decontamination rate through heat and surface can also be used in HDPE and PP recycling to reduce odors and VOCs. With the IR-Fresh concept, which in turn integrates infrared technology as the central technology, it is possible to re-grind before and granules after the extrusion process while reducing process times in order to be able to recycle high-quality plastics again. Here, too, an application-specific modular concept consisting of IR-Fresh and IR-Fresh-Conditioner is available.

The family of infrared technology is brought closer by the intermittent IR-Batch. Just like the continuously working infrared rotating tubes, the IR-Batch ensures gentle material handling. Regardless of whether the plastic granules will be heated, crystallized, dried or encapsulated, the infrared batch can be used flexibly and easy to clean. Due to these conceptual advantages, the exhibit shown is intended to be a crystallization device for a PET masterbatch. Due to the precise, individually adjustable temperature control, the granules can be crystallized gently but safely. Heat input from infrared rays directly, so short processing times of only 15-20 minutes are guaranteed. In addition to PET and PLA crystallization, other applications can also be achieved with IR-Batch – technical polymers such as Peek, PAI or PEI can be processed as well as highly hygroscopic materials or bridges, so that a range of IR-Batch start-ups can be used there where conventional drying arrives. to its maximum limits.