Drying equipment

In the production of PET films, plates and fibers, the use of infrared drum (IRD) crystal dryers to pre - treat old and new resins not only has a high processing speed, is easy to operate, but also saves energy. The entire process takes only 20% of the time of conventional equipment, and the energy consumption can be as low as 65% compared to desiccant dehumidification systems. The Drying Technology Center conducted a comparative test of the IRD drying system with a traditional twin crystal crystallization dryer. The results showed that the energy costs were reduced by 56% and 45%, respectively, when the board and plastic bottles were crushed to recover the recycled resin.

干燥设备

Crystal drying equipment

“Blisters” packaging containers and other products that rely heavily on recycled materials have a large amount of processing. If this new technology is adopted, large-scale adiabatic drying bins and independent crystallizers are not required. These devices often need to be installed in high-headroom plants. Inside. Infrared drum (IRD) dryers require only a dryer with a relatively low processing capacity. The capacity of the connected storage box is less than the throughput of the extruder or molding machine for one hour.

The investment cost of the IRD system is about the same as that of a conventional dryer single crystallizer, but the energy consumption of IRD is generally about 0.1 kilowatts per kilogram of material per hour. The energy consumption of most conventional crystallizers and dryers is this energy consumption. More than twice as many. Energy efficiency is high because infrared radiation is radiant energy that only heats the resin, does not heat the surrounding air, and the heat is transferred from the inside of the resin particles to the outside. The water discharged from the resin particles is carried away by the surrounding air.

When using the traditional desiccant dehumidification system, the drying time of PET is about five or six hours. When IRD is used, the crystallization process of PET only takes eight to thirteen minutes (the time that PET passes through the drum), and then the PET crystals are sent. Dry the dryer/stocker in the middle and let it dry for another 30 to 45 minutes. In other words, after the extruder is turned on or shut down, the processing time of the finished product can be greatly reduced. The IRD dryer uses a continuous operation process that does not require the use of large bins to ensure the operation of the production line, but also to replace the color masterbatch and processed products, the operation is simpler and the time is shorter.

Precision Plastic Injection Parts

Plastic injection parts can be seen everywhere in industry and in daily life, and can be said to be the most used parts by humans. All industries such as automobiles, airplanes, ships, electrical and electronic, etc. will use more or less precision plastic injection molding parts, and even our daily washbasins, tooth cups, plastic chairs, power sockets, etc. are plastic injection molding parts. Its biggest feature is that it is widely used, high efficiency, low cost, and high product precision. However, since precision molds are required to form products before production, mold costs and mold opening time need to be invested in the early stage, which is not suitable for small batches of products. Moreover, the development of precision molds is very critical. Only by producing high-precision and durable molds can the accuracy and production efficiency of subsequent products be guaranteed. Therefore, the development of plastic molds is very important for the production of plastic injection parts.

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