Plastic manufacturing process: low pressure injection molding
author: Universe plastic
2024-03-20
Low-pressure injection molding is a special injection molding technology used for the external plastic packaging, protection and sealing of electronic components. By using lower injection pressure and lower temperature, damage to sensitive electronic components can be reduced.
Regarding the process steps and characteristics of low-pressure injection molding, Universe Plastics Engineers will introduce to you in detail:
Process steps of low pressure injection molding
1. Choose appropriate low-pressure injection molding materials. Commonly used injection molding materials are mostly environmentally friendly materials, such as PA and PO materials.
2. Design the injection mold according to the shape and size of the electronic components to ensure that the mold can accurately fix the electronic components and provide appropriate injection space.
3. The material is heated and injected into the mold cavity. The material flows under low pressure to cover and wrap the components.
4. The material is cooled and solidified in the mold to form a protective layer for the components.
5. Take the formed product out of the mold and conduct quality inspection to ensure that the product meets the requirements.
Characteristics of low pressure injection molding
1. The injection pressure is usually between 10-20 bar, which is much lower than ordinary injection molding.
2. The temperature of low-pressure injection molding is usually between 120-150°C to avoid high temperature damage to components.
3. Low-pressure injection molding materials usually have good fluidity and fast curing characteristics, which can evenly cover components and improve production efficiency.
Applications of low pressure injection molding
1. Electronic component packaging: packaging circuit boards, sensors, connectors, etc. to provide mechanical protection and electrical insulation.
2. Automotive electronic products: packaging of automotive sensors, control modules, etc. to enhance environmental resistance and chemical resistance.
3. Medical electronic equipment: protection and sealing of medical sensors, diagnostic equipment, etc. to ensure safety and reliability.
4. Power strip cable joints: The packaging of cable joints, plugs, and power strip connectors provides waterproof and corrosion-resistant protection.
Advantages of low pressure injection molding
1. Low-voltage and low-temperature processes avoid damage to electronic components.
2. Provide good mechanical protection and electrical insulation, waterproof, dustproof and chemical corrosion resistance.
3. The material has fast curing characteristics, which shortens the production cycle and improves efficiency.
4. Using environmentally friendly materials, it is environmentally friendly and suitable for various applications.
Precautions for low pressure injection molding
1. Select appropriate low-pressure injection molding materials according to specific applications to ensure performance and reliability.
2. Mold design needs to consider the shape of electronic components, product size and injection molding space requirements to ensure final molding quality.
3. Strictly control injection molding temperature, pressure and time to ensure product consistency and quality.
4. Conduct quality inspections during the production process to ensure that products comply with specifications and standards.
Summarize
Low-pressure injection molding is an efficient and reliable process suitable for various injection molding needs of electronic components that require protection and encapsulation. In low-pressure injection molding projects, professional injection molding companies are required to recommend low-pressure injection molding materials and manufacturing solutions.
Dongguan Universe Plastic Factory has more than 15 years of injection molding experience. It has a team of professional engineers, mold making, low-pressure injection molding equipment, etc., and can provide high-quality low-pressure injection molding services.
If you are looking for a one-stop factory for low pressure injection molding, please contact us to get the latest service quotation.
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