All Injection Molding Plastics

Plastic injection molding is a common method of plastic processing that involves injecting melted plastic material into a mold and allowing it to cool and solidify to form the desired parts or products. Here are some basic knowledge and processing considerations for plastic injection molding:

1. Basic Knowledge:

a. Plastic Material Selection: Choosing suitable CNC plastic material for injection molding is crucial. Common injection molding materials include polypropylene (PP), polyethylene (PE), polyvinyl chloride (PVC), etc. Each material has specific physical properties and processing requirements, and the appropriate material should be chosen based on the product requirements.

b. Mold Design: The mold is a critical component of injection molding, as it determines the shape and quality of the final product. Mold design should consider factors such as product dimensions, structure, and wall thickness to ensure uniform flow of plastic during the molding process and proper filling of the mold cavity.

c. Injection Machine Selection: Choosing the right injection machine is also essential. The specifications and performance of the injection machine should match the requirements of the intended product. Parameters such as pressure, injection speed, and shot volume need to be adjusted according to the material and product requirements.

2. Processing Considerations:

a. Temperature Control: Proper temperature control of the molten plastic is necessary during the plastic injection moulding process. Typically, plastic materials have a recommended melting temperature range, and heating or cooling should be controlled accordingly to ensure complete melting or solidification.

b. Injection Pressure and Speed: Injection pressure and speed of the machine need to be properly controlled. Excessive pressure or high injection speed may cause mold damage or product defects, while insufficient pressure or speed can result in inadequate filling of the product.

c. Plastic Material Drying: Some plastic materials are sensitive to moisture, so drying is required before injection molding. Moist plastic materials can lead to bubbles or surface defects.

d. Cooling Time: Cooling time is a critical factor in determining product quality. Sufficient cooling time ensures dimensional stability and good quality. Therefore, cooling time should be properly adjusted based on the material's thermal conductivity and product dimensions.

e. Mold Maintenance: Regular maintenance and cleaning of the mold are essential. Accumulation or damage on the mold surface can result in product defects or mold damage.

These are the basic knowledge and processing considerations for plastic injection molding. Further learning and adjustments should be made based on specific situations and requirements.

Injection molding is a plastic processing method widely used in various industries. Below are some common industries and fields where injection molded products are widely used:

Flourish Legend specializes in providing customers with one-stop injection molding solutions, including mold design, rapid prototyping manufacturing, plastic injection molding, coating, silk-screen printing, and assembly. With a team of professional technicians and a well-established management system, we continuously enhance the competitiveness of our company and products, earning the satisfaction of our customers. Our products cover a wide range of industries, including the automotive sector, household appliances, medical devices, and 3C electronics. Flourish Legend warmly welcomes customers to visit us for business negotiations.