Production Technology
Based on injection pressure and speed
1. Conventional Injection Molding:
This method involves injecting molten plastic into a mold using moderate pressure and speed. It's suitable for the production of most general-purpose plastic products.
2. High-Speed Injection Molding:
This technique utilizes a higher injection speed and shorter injection time to increase production efficiency. It's ideal for products with short cycle times and high production volumes, such as bottle caps and disposable cutlery. However, a drawback of this method is that it can lead to residual stress within the product, potentially affecting its overall quality.
3. Low-Pressure Injection Molding:
This approach is suitable for thin-walled products, large parts, or items requiring precise control. It helps to minimize internal stress in the product and enhance its overall quality. However, the production speed is comparatively slower.
4. High-Pressure Injection Molding:
This technique employs high injection pressure, which effectively fills complex mold cavities. It’s suitable for products requiring high precision or intricate details.
Based on differences in mold usage
1. Multi-Cavity Injection Molding:
This process utilizes a mold with multiple cavities, allowing for the simultaneous production of several parts in a single cycle. This significantly increases production efficiency.
2. Two-Shot Injection Molding:
This technique uses two injection units to inject different colors or materials of plastic into the same mold. This enables the creation of parts with multiple colors or material layers.
3. Insert Injection Molding:
In this process, metal or other material inserts are pre-placed in the mold. Then, plastic is injected to encapsulate the inserts, creating a product with metal or other material components.
4. Gas-Assisted Injection Molding:
During plastic injection, high-pressure gas is introduced, causing the plastic to expand within the mold. This allows for the production of parts with uniform wall thickness and lighter weight. It's particularly well-suited for large parts with varying wall thicknesses.
5. Reaction Injection Molding (RIM):
This method involves mixing two or more reactive liquid materials in the mold where they react and solidify to form the plastic part. It's commonly used to produce large parts with complex shapes.
Based on specific functionality
1. Micro Injection Molding:
This method is used for the production of very small plastic parts.
2. Precision Injection Molding:
This technique focuses on achieving high dimensional accuracy and excellent surface finish in the molded part.
3. Thin-Wall Injection Molding:
This specialized process is dedicated to producing parts with extremely thin walls. It demands high precision in mold design and injection parameters.
4. Hot Runner Technology:
This technology reduces the amount of molten plastic that remains in the runner system, improving material utilization and minimizing waste.
5. Automated Injection Molding:
This involves using automated equipment for the injection molding process.