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Plastic Injection Molding in China
Plastic injection molding is important manufacturing process for large volume production of plastic parts. It has advantages of high speed production, high efficiency, automatically operation, and can molding plastic parts with shape from simple to complex, size from small to large. As an injection molding manufacturer with good reputation located in Shenzhen China, ACO Mold Ltd has been working on plastic processing industry for more than 10 years. We have our own well-equipped mold making & injection molding factory.
How plastic injection molding work?
At a certain temperature, completely molten plastic material stirred and heated by a screw is injected into mold cavity. After pressure holding, cooling and solidification, the injection molded plastic part is released from mold and gained. Injection molding process has 6 stages below:
- Mold clamping
- Injection
- Pressure holding
- Cooling
- Mold opening
- Release of injection molded part
The above process is repeated, and the product can be periodically produced in batches.
Materials used in plastic injection molding
Before starting mold making & injection molding project, it is important to choose suitable injection molding materials. Material selection should be based on the requirements on your custom plastic products, and the product usage. Each plastic material has their own performance and application field. Knowing performance and application fields of plastic materials can help you choose suitable injection molding material, so as to produce injection molded plastic parts that meet the product usage requirements. ACO Mold injection molding company made injection mold and did injection molding for a product company from United States before. This plastic part is for recreational use. It must be durable, but slightly flexible to avoid breaking. So we propose to use PP material, this is hard plastic material but a little bit flexible and not easy to break. PP Injection molding material was approved by customer (If you want to learn about case study of mold making & injection molding, please click here).
Tool for plastic injection molding
Injection mold is tool for large volume plastic injection molding of plastic products. Before plastic injection molding, ACO Mold will make mold tool. Mold making is complex work, which related to many mold machining process such as CNC, EDM, Wire Cutting etc. Mold quality directly influence the quality of injection molding plastic parts such as appearance beauty, dimension accuracy etc. ACO Mold is always committed to manufacturing economical high-quality injection molds. We provide a full range of solutions to lower down your budget without lowering down the quality.
ACO Mold provides one stop plastic processing service:
- CAD design/mold flow analysis/DFM.
- Injection mold, die-casting making, CNC turning.
- Plastic Injection molding.
- Rapid prototyping, low volume production.
- Painting, skill printing, assembly.
Contact us immediately to get free quote, engineers from ACO Mold will give you the best solutions and recommend suitable materials.
The temperature to be controlled during plastic injection molding includes barrel temperature, nozzle temperature and mold temperature. The first two temperatures primarily affect the plasticization and flow of the plastic, while the latter temperature primarily affects the flow and cooling of the plastic.
Precision plastic injection molding refers to the plastic processing process that the dimensional accuracy of plastic products produced by injection molding machine equipment can reach 0.01mm or less, usually between 0.01mm and 0.001mm. Precision plastic injection molding is mainly used in industrial and civil products such as aerospace, automotive parts, precision instruments, sports equipment, testing tools.
ABS resin is a terpolymer developed on the basis of modification of polystyrene resin. Wherein A represents acrylonitrile, B represents butadiene, and S represents styrene. ABS resin has the comprehensive properties of three components. A can improve oil resistance and chemical corrosion resistance, and thus has a certain surface hardness; B makes ABS rubbery toughness and improves impact toughness; S makes ABS plastic appear good fluidity, giving it good performance in thermoplastic plastic injection molding. ABS plastic is mainly used in China to manufacture the outer casing of instrumentation, household appliances, telephones, televisions, etc. and ABS plastic for electroplating, which gives it a metallic luster and is used to replace metal. Injection molding is the main molding method of ABS plastic.
Injection pressure is provided by the hydraulic system of the injection molding system. The pressure of the hydraulic cylinder is transmitted to the plastic melt through the screw of the injection molding machine. Under the pressure, the plastic melt enters the main runner and the branch runner of the mold through the nozzle of the injection molding machine, and then enters mold cavity through gate. This process is the injection process, or the filling process. The existence of pressure is order to overcome the resistance during the melt flow, or conversely, the resistance present during the flow process needs to be offset by the pressure of the injection molding machine to ensure a smooth filling process.
The main work of injection molding factory is to provide plastic processing service, turning plastic into plastic products. ACO Mold is a Chinese injection molding manufacturer, providing one-stop plastic processing service of mold making & injection molding. We have our own well-equipped factory in Shenzhen China.
After receiving inquiry about injection mold manufacturing and injection molding project from customer, ACO Mold firstly should know the requirements for the products from customer, such as product color, quantity, finish, materials etc. It is best to send product drawings in 3D to the injection molding supplier, so the molding supplier can make mold design according to your drawings and requirements for the product, further making injection mold. 3D printing sample is also ok. We can do reverse engineering design according to your sample.
