Suzhou Yidete Machinery Co., Ltd/

With the widespread use of engineering plastics, dehumidifiers have gradually replaced traditional hot air dryers (ovens). usePlastic dehumidification dryer/It has the following four major benefits:

1. The moisture in plastic raw materials can be removed to eliminate the generation of bubbles, achieving ideal mechanical, electrical, dimensional stability, and a smooth and beautiful appearance of the product.

2. Prevent the production of defective products and return losses, greatly reducing the generation of waste materials.

3. Because the dehumidification dryer uses very dry air for dehumidification work, it can shorten the drying time and save labor hours.

4. The air pipelines of the dehumidification dryer adopt a sealed circulation system and are equipped with filters, so they are not affected by external climate and can prevent dust from causing pollution in the factory, improving the working environment.

How to achieve the highest drying efficiency?

A good drying efficiency is determined by four factors: drying temperature, drying time, air volume, and dew point. And these four factors are interrelated, any change in one condition will affect the drying effect.

Drying temperature refers to the temperature of the air entering the drying bucket. Each raw material has a certain temperature limit during drying due to its physical properties, such as molecular structure, specific gravity, specific heat, moisture content, and other factors. If the temperature is too high, some additives in the raw material will evaporate or clump, while if it is too low, some crystalline raw materials may not meet the required drying conditions, such as PC/120 ℃, ABS/80-95 ℃. In addition, insulation and heat preservation are required in the selection of dry buckets to avoid loss of drying temperature, resulting in insufficient drying temperature or energy waste.

Drying time refers to the pre drying time before the raw materials are formed. If the drying time is too long, it will cause the raw materials to deteriorate or clump, or waste energy. If the drying time is too short, it will cause the phenomenon of high moisture content. For example: PC/3-4 hours, ABS/3-4 hours.

Air volume is the medium that removes moisture from raw materials, and the size of the air volume can affect the effectiveness of dehumidification. If the air volume is too large, it will cause the return air temperature to be too high, resulting in overheating and affecting the stability of the dew point. If the air volume is too small, it will not be able to remove the moisture * from the raw materials. The air volume also represents the dehumidification ability of the dehumidifier dryer.

Dew point temperature refers to the temperature at which a gas cools and condenses its moisture into water droplets, and is a unit for measuring the degree of dryness (humidity) of a gas. The less moisture in the gas, the lower the dew point temperature. A good dehumidification dryer should have a dew point temperature of -40 ℃.

The use of dehumidification and drying machines can be divided into single machine and centralized. Single machine dehumidification and drying machines usually include a drying machine host, a drying bucket, and a suction machine. The standalone use is suitable for a small amount of diverse drying, with the advantages of good drying efficiency and convenient and fast material replacement. The centralized dryer includes a dryer host and several drying buckets, each with an independent heating controller that can dry several different raw materials simultaneously, and is matched with an air volume regulating valve to control the air volume of each drying bucket.

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