What are the 5 Types of Plastic Molding?
What are the 5 Types of Plastic Molding?Plastic molding is a key step in plastic processing. There are various types of plastic molding, each of which has its specific application scenarios and advantages.
What are the 5 Types of Plastic Molding?
Plastic molding is a key step in plastic processing. There are various types of plastic molding, each of which has its specific application scenarios and advantages.
The following are the 5 main types of plastic molding and their brief descriptions:
1. Injection molding
Definition: Injection molding is a widely used plastic processing method. The molten plastic is injected into the mold under high pressure by an injection molding machine, and the desired shape of the product is obtained after cooling and solidification.
Features: Injection molding has the advantages of high production efficiency, high precision, and the ability to mass-produce complex-shaped products. It is applicable to almost all thermoplastics and is one of the most commonly used methods in plastic processing.
2. Blow molding
Definition: Blow molding is a method of inflating thermoplastic plastic parisons into hollow products with the help of gas pressure.
Features: Blow molding is particularly suitable for the production of hollow containers such as bottles and cans. The products have the characteristics of good surface texture, comfortable feel, and good energy absorption. However, its process is relatively complex and the product dimensional stability is poor.
3. Extrusion molding
Definition: Extrusion molding, also known as extrusion molding or extrusion molding, is to force molten plastic through the die through the extrusion action of a screw or plunger to form a continuous profile with a constant cross-section.
Features: Extrusion molding can be produced in large quantities and continuously, with high production efficiency and low cost. However, it should be noted that it cannot produce three-dimensional products, and the products usually require secondary processing.
4. Compression molding (molding)
Definition: Compression molding is a method of placing thermosetting plastics or reinforced plastics into a mold and curing them by heating and pressurizing them.
Features: Compression molding is suitable for thermosetting resins with poor fluidity, with a simple mold structure and low manufacturing cost. However, its molding cycle is long, the labor cost is high, and it is not suitable for products with easily broken inserts.
5. Foam molding
Definition: Foam molding is the process of making plastics produce microporous structures, and the plastics are expanded and lightened by adding foaming agents.
Features: Foam molding can produce lightweight materials, which are widely used in the fields of automobiles, household goods and electronic product housings. Its products have the advantages of light weight and good heat and sound insulation. There are various foaming methods, including chemical foaming, physical foaming and mechanical foaming.
The above five types of plastic molding each have their own unique features and application scenarios, and play an important role in the field of plastic processing.