Injection  molding

What is injection molding

Plastic injection molding is a commonly used plastic processing method that involves injecting molten plastic material into a mold, allowing it to rapidly cool and solidify inside the mold, ultimately obtaining plastic parts or products with the desired shape and size. This is an efficient, precise, and scalable plastic manufacturing process.

The main process of plastic injection molding includes:

  1. Mold Design: A dedicated plastic injection mold is designed based on the design requirements of the desired part or product. The mold design takes into account the geometric shape, size, structure of the product, and the characteristics of the plastic material.

  2. Plastic Material Insertion: The required plastic material is added to the hopper of the injection machine in the form of pellets or powder. Typically, these plastic materials are heated and melted to form molten plastic that can be injected into the mold.

  3. Injection Molding: The molten plastic is injected into the injection mold through the screw of the injection machine. The screw applies pressure to inject the plastic material into the cavity of the mold, filling the desired shape and size.

  4. Cooling and Solidification: The plastic rapidly cools and solidifies inside the mold, taking on the desired shape. The cooling time depends on the type of plastic material used, as well as the size and thickness of the part.

  5. Mold Opening and Ejection: Once the cooling is complete, the mold is opened, and the finished part is ejected. Mold release agents may be used to facilitate smooth ejection. After ejection, the mold is ready for the next injection cycle.

  6. Post-processing and Finishing: The finished part may undergo post-processing steps such as trimming edges, surface finishing, painting, or applying labels. These steps can be tailored to the specific requirements of the product.

Advantages of molding



High production efficiency and cost down

The advantages of plastic injection molding include:

  • High Production Efficiency: It enables the large-scale production of plastic parts or products within a short period of time.

  • High Precision: The precision in mold fabrication allows for the production of precise shapes and sizes.

  • Material Versatility: It can accommodate various plastic materials, including polypropylene, polyethylene, polycarbonate, and more.

  • Design Flexibility: It offers the freedom to create complex geometric shapes and structures, providing design flexibility.

  • Automation Capabilities: Injection machines and molds can be automated, enhancing production efficiency.

Molding of Ruey Chyi

Excellent Quality, Precision Plastic Injection Molding

We provide high-quality plastic injection molding services to ensure that your products meet exceptional quality standards. With advanced equipment and technology, we are capable of manufacturing precise plastic parts to meet the diverse needs of various industries.

Customized Solutions to Meet Your Unique Requirements

Whether you require large-scale production or small-batch production of plastic parts, we offer customized solutions. Our professional team will collaborate with you to understand your unique requirements and provide you with the best design and manufacturing solutions.

Efficient Production and Quick Delivery

With efficient production processes and excellent supply chain management, we guarantee on-time delivery of your orders. We prioritize production efficiency and quality control to improve delivery speed, ensuring your products can be launched or delivered to customers promptly.

Brand Collaboration for Quality Assurance

We collaborate with renowned brands and serve as their reliable partners. Our commitment is to provide high-quality plastic injection molding services, ensuring that every product meets international standards and customer requirements. Our brand collaborations are a testament to the quality we deliver.

Environmental Awareness for Sustainable Development

We value environmental protection and sustainable development, striving to minimize our impact on the environment. We utilize environmentally friendly materials and technologies, implementing energy-saving and emission-reducing measures to lower our carbon footprint. By choosing our plastic injection molding services, you are contributing to environmental preservation.


Plastic injection molding is widely used in various industries, including automotive, electronics, medical, and household products. It is a flexible, reliable, and efficient manufacturing method that can meet the diverse needs for plastic parts across different industries. Whatever type of plastic parts you need to manufacture, we can provide you with high-quality plastic injection molding services. Please contact us, and let’s work together to achieve your product goals.