PBT injection molding product sealing defects: causes and solutions

In the injection molding process, PBT (polybutylene terephthalate) material is widely used in electronics, automotive, aerospace and other fields because of its excellent heat resistance, insulation, chemical corrosion resistance and mechanical strength. However, in actual production, PBT injection products sometimes have defects of poor sealing, which may lead to the function of the product being affected or even unable to be used normally.

First, the reasons for poor sealing defects of injection products

1. Equipment factors: Injection machine, mold, barrel and other equipment factors are one of the main reasons for poor sealing defects of PBT injection products. Poor equipment performance, wear, or improper configuration may result in inadequate material filling, resulting in poor sealing.

2. Process factors: Improper setting of injection speed, pressure, temperature and other process parameters may affect the fluidity and filling effect of the material, resulting in poor sealing.

3. Material factors: the quality and performance of PBT materials have a great impact on the sealing of injection molded products. Poor material size, dryness, melting index and other parameters may lead to filling difficulties, resulting in poor sealing.

Second, to solve the PBT injection molding products closed defects way

1. Equipment optimization: Ensure that the injection machine, mold and other equipment performance is good, regular maintenance and maintenance. If necessary, the equipment can be modified or upgraded according to the actual production needs to improve the filling effect and product sealing.

2. Process adjustment: According to the actual production situation, adjust the injection speed, pressure, temperature and other process parameters. For example, appropriately increasing the injection speed and pressure helps to improve the filling effect of the material and improve the problem of poor sealing.

3. Material selection: PBT material with high quality, strong adaptability and good fluidity is selected. In the process of material procurement, the quality should be strictly controlled to ensure that it meets the production process requirements and reduce the probability of poor sealing problems.

The reasons for the poor sealing defects of PBT injection molding products are analyzed above, and the corresponding solutions are provided. In the actual production process, appropriate measures should be taken according to the specific situation to solve the problem of poor sealing from the aspects of equipment optimization, process adjustment and material selection. Through continuous improvement and innovation, enterprises can improve product quality and production efficiency, and provide strong support for the development of electronics, automobiles, aerospace and other fields.