Injection molding, also known as injection molding, is a processing technology for plastic parts and is widely used in the production of large quantities of injection molded products. The process of injection molding is to melt the selected plastic raw materials, and inject the molten plastic into the injection mold under high pressure. The mold used for injection molding is designed according to the required injection product, and the material is made of steel or aluminum with higher hardness. It is injected into the mold cavity, and after cooling and solidification, the product shape of the desired part is formed.
The injection molding process is widely used. From small injection molded parts of a few centimeters to large parts with a diameter of tens of centimeters, all can be mass-produced through injection molding. Our company is also equipped with injection molding machines ranging from 100 tons to 1,500 tons to customize injection molding products of various shapes and sizes for customers.
The process flow of custom injection molding products
Injection molding is a complex process. From raw material selection to injection molding to packaging and shipment, we strictly implement quality control and good after-sales service. The main process flow is as follows:
- Material preparation: First, according to your drawings or samples we will select plastic materials suitable for your products. We have good suppliers who can ensure the quality of our plastic raw materials. Then these plastic materials are in the form of granules or powder present and ready in the hopper of the injection molding machine.
- Heating and melting: The plastic material is delivered to the injection molding machine and then heated in the heating cylinder. When a material reaches its melting point, it becomes a flowable liquid.
- Injection molding machine: Choose the appropriate injection molding machine, install the designed mold, and inject the molten plastic into the mold. The mold is designed according to the shape of the product, and all products can be made into the desired shape. Injection molding machines use high pressure to push molten plastic into the mold. High pressure can make the liquid plastic raw materials distribute more evenly.
- Cooling: Once the plastic enters the mold, it will begin to cool, gradually hardening into the shape of the product. Cooling time depends on product size and thickness.
- Mold opening and ejection: The mold is normally divided into an upper mold and a lower mold. After the product is cooled, the mold will separate, and then the finished product will be ejected from the mold. The injection molding machine can be set up through these steps, and our equipment is the most advanced injection molding equipment currently available.
- Quality inspection: Finished products will undergo strict quality inspection, including appearance, size and functionality. We ensure that every product meets quality standards.
- Post-processing: Sometimes products require post-processing such as trimming, polishing, painting or assembly. This depends on the product’s characteristics and requirements.
- Packaging and Delivery: Finally, the product is packaged to ensure it remains intact during shipping and storage. They will then be delivered to you as per your request.
Designed to ensure a high-quality product, the entire injection molding process is carefully controlled and monitored from material preparation to final delivery. And we will communicate with you in real time and give you videos or pictures of the process. Our goal is to provide you with satisfactory finished products, meet your needs and expectations, and become long-term partners and friends.
Product customization and mold design for injection molding
Preparation work before design:
- You can provide design sketches, CAD files or basic specifications of your product.
- Familiar with injection molded parts, including their geometric shapes, injection molding usage requirements, raw materials for injection molded products, etc. Based on this
- information, engineers begin planning the design of the product.
- Check the molding processability of customized injection molded products.
- Clarify the model and specifications of the injection machine.
Develop molding process
- Product overview, such as diagram, weight, wall thickness, projected area, overall dimensions, presence of undercuts and inserts.
- The plastic raw materials used in the product, such as product name, model, manufacturer, color, and drying conditions. and share this information with you.
- The main technical parameters of the selected injection machine, such as the relevant dimensions between the injection machine and the installation mold, screw type, and power.
- Injection machine pressure and stroke.
- Injection molding conditions, such as temperature, pressure, speed, clamping force, etc.
Injection mold structure design steps
- Determine the number of cavities.
- Select the parting surface.
- The mold must be designed to accurately match the shape and size of the product to ensure a high-quality product is produced. After completing the mold design, the manufacturer
- begins manufacturing the injection mold.
Sample making
Once the mold is manufactured, samples or sample batches are first made. We will send these samples to you or help you directly test and verify whether the design meets the requirements and whether any adjustments or modifications are needed.
mass production
- After the sample is approved, the mass production phase will begin. The plastic pellets will be heated and melted in the injection molding machine and then injected into the mold to form the shape of the product.
- Depending on the nature of the product, post-processing work may be required, such as trimming, polishing, painting or assembly.
- Injection molded products will be properly packaged to ensure they are not damaged during transportation and storage. They will then be delivered as per the customer’s requirements.
Throughout the process of customizing injection molding products and mold design, all departments of our company work closely together to provide professional advice based on your needs to achieve the best product design and production process, ensuring that the final product meets your customized requirements and maintains the high quality of injection molded parts. Quality and consistency.
Injection molding process
- Injection molding
- Insert injection molding
- Two-color injection molding
- Microfoam injection molding process
- Nano Injection Molding (NMT)
- Blow molding
- Extrusion molding (profiles)
Injection molding product applications
Injection molded products have a wide range of applications. At Mindwell, the injection molded products we produce are most commonly used in the automotive and electronic equipment industries. Secondly, it plays an important role in the toys, industrial equipment, and construction industries. No matter what industry you are in, as long as you want to manufacture the plastic injection molding products you want through injection molding, you are welcome to contact us at any time. Our engineers and sales team will provide you with professional services and solutions.
