Gentle, yet Efficient Material Treatment
Appliance for Decontamination, Heating and Mixing
The devices on display at the booth of Kreyenborg GmbH in Senden, Germany, at this year’s K 2019, held in October in Düsseldorf, will mainly deal with the following three subjects:
- Degassing and decontamination of PET recyclates by means of IR-Clean rotary drums, which are FDA- and EFSA- recommended.
- Heat treatment in the discontinuous IR-Batch 90/100-30 dryer that serves to heat, crystalize, dry and coat plastic pellets.
- Fast, yet gentle mixing in the devices of the MBM series.
In addition to appliance engineering, the engineering company considers as one of their core competences automated overall concepts to handle bulk materials.
Decontamination in IR-Clean Rotary Drums
Using no expensive vacuum technology, the operating principle of the rotary drum is based the homogenous flow of material at a defined residence time, thanks to the internal helix welded into the rotary drum and its continuous rotation (first-in/first-out principle). During this process, the material is thoroughly mixed and the surface is continuously exchanged, which is how the infrared elements sitting above the material bed can provide for fast and homogeneous heating. The company informs that suitability of the IR-Clean technique to decontaminate PET recyclates has been confirmed in a letter of non-objection by the American FDA office, as well as in several challenge tests that prove compliance with the requirements of the European EFSA regulations.
All over the world, states Kreyenborg, the IR-Batch technique has established itself for drying PET masterbatch, because the material can only be dried if crystalized at the same time. Otherwise the pellets may clot, which is an undesired effect. Therefore, there are mixing elements integrated into the drum of the drying aggregate. Thanks to the fact that temperature control is adaptable precisely to suit the respective requirements, the pellets can be crystallized in a gentle, but yet safe way. Heat is introduced directly via infrared radiation, thus shortening process times to 15 to 20 min.
MBM Mixer Series
The mixer on display is the smallest of the MBM series, which covers a range of volumes up to 20,000 l. According to manufacturer information, these high-speed mixers are highly accurate in mixing, and provide for gentle material treatment along with short residence times in the mixer, thanks to the large and slowly moving mixing screw. The large cover flap as well as one or several man holes, subject to the size of the respective model, enable easy cleaning. Available in mild or stainless steel, there are no dead spots in the mixer itself.
K 2019: Hall 9, booth A-55
Kreyenborg Plant Technology GmbH & Co. KG
Patents encourage innovation: Stay on the ball with the latest innovations in the plastics industry in our patents section.
Would you like to subscribe to our Newsletters on plastics technology and profit from the latest information?
You know the trade name but want to know the material manufacturer, type of polymer and delivery form? Search here!