Hot air plastic hopper dryer are used to dry raw materials which are re-moisture due to packaging, transportation or recycling. The plastic hopper dryer can be used with injection molding machine or various plastic shaping machine. It will save energy by 27-65% and it will avoid the plastic raw material second moisture absorption after dried while it is placed on the inlet of main machine. The hopper dryer will shorten the injection time and improve the quality of finished product.
Labotary Infrared Crystal Dryer is specialized design for Labotary using. It can be used for a variety of plastic pellets, such as APET, GPET, CPET, PLA, HIPS, PE, ABS, EVA ,PC, PEEK, PPS, PTFE, PEEK, TPU, TPE e.g.We got German Patent on Infrared crystal dryer ( IRD) in 2008, and patent number is ZL201110032787.6. We also get China Patent on Infrared crystal dryer in 2012 by our research departement.
If you use Twin-screw or Multi screw extruder with vacuum degassing system, why still need to use Infrared crystal dryer to work together?Continuous material feeding into Sheet extruderIncreased output: up to 50% higherIncreased bulk density of material: normally 20-50% depends on material typeReducing the complexity of vacuum systemIncreased stability of the operation of extruding line and product qualityLower requirement for raw material usedLow down the operation cost up to 20% compared to the systems without IRD (Infrared crystal dryer )
PLA is kind of very sensitive temperature material. PLA is a hygroscopic thermoplastic that easily absorbs water from the atmosphere.Even small amounts of moisture will hydrolyze PLA in the melt phase, reducing molecular weight and causing loss of properties. This can cause sheet brittleness, internal holes, sagging of the web at the die exit, or other process and quality problems. With PLA, proper drying is not optional. It is absolutely essential. Resin manufacturers recommend that PLA be dried less than 250 ppm before processing. In fact, moisture levels below 200 ppm may be needed in order to ensure a reasonable safety margin and, in some cases, moisture levels below 50 ppm are recommended.
Drying and crystallization of CO-PBT and CO-PET pellets.Processing Explanation Dry and crystallize of amorphous Co-PBT and Co-PET Pellets to 150ppm Process temperature 80 °C to 135 °CCooling the pellets to 40°C (Re-cooling the pellets to avoid the pellets re-moistured )Transfer to bagging package
Processing Explanation · Dry and crystallize of PET Recycled flake to 70ppm · Process temperature 180 °C to 220 °C· Discharging and feed to Extruder feeding hopper Can cooperate with the machine line:· PET Extruding pelletizing machine line · PET Sheet making machine line · PET Mono filament fiber making machine · PET Meltblown fabric making machine · PET Bale strap making machine line