Injection molding dryer: plastic granule drying equipment

Injection molding dryer: plastic pellet drying equipment related content sharing
In the modern injection molding industry, the injection molding dryer is a device used for drying plastic pellets. The main function of the equipment is to remove moisture from plastic raw materials. Plastic pellets tend to absorb a certain amount of moisture during storage and transportation. If these moisture is not removed during the injection molding process, it will cause subsequent plastic products to have quality problems such as bubbles, silver wires, and strength loss.

Therefore, drying the plastic before injection molding is an indispensable step. 
1. Introduction to the principle of injection molding dryer:
The working principle of the injection molding dryer is based on the principle of hot air circulation and drying. Usually, it consists of a heating system, a fan, a drying hopper, a filter, and a control system. The heating system heats the air to a set temperature, and the fan sends the hot air into the drying hopper to fully contact the plastic pellets. The moisture on the surface of the plastic pellets evaporates in the hot air, and the wet air is discharged through the filter, thereby achieving the drying of the plastic pellets.

2. Analysis of drying conditions:
Different types of plastic pellets require different drying conditions. For example, for engineering plastics such as nylon and polyester with strong water absorption, higher drying temperature and longer drying time are usually required; while for general plastic particles such as polyethylene and polypropylene with weak water absorption, lower drying temperature and shorter drying time are relatively required. Therefore, injection molding dryers usually have adjustable temperature and time control functions to meet the drying needs of different plastic particles.

3. Application factors of injection molding dryers:

1. Injection molding dryers have different specifications. When applied, they should be selected according to the drying capacity, the production capacity and material amount of the injection molding machine to meet production needs.

2. The second is the range and control degree of injection molding drying temperature. Good temperature control can give stability to the drying effect. In addition, the energy consumption, reliability and maintenance cost of the equipment are also considerations.

3. Whether it has energy-saving effect, this is analyzed according to the technical capabilities of the injection molding machine. Some new injection molding dryers use energy-saving technologies, such as intelligent temperature control system, double-layer insulation effect, faster heating, etc., which greatly reduces energy consumption and improves the economy of production.

4. Operation points:
When using the injection molding dryer, you need to pay attention to some operation points. For example, you need to clean the drying hopper and filter regularly to prevent blockage and affect the drying effect; you need to add materials according to the specified amount to avoid too much or too little; you need to check the operation status of the equipment regularly to find and solve problems in time.