Discover our standards and injection molding technologies

Compression and Injection of Thermosets

1. Compression Molding of Thermosets

This technology involves forming the material in a plastic state and then curing it under high temperature and pressure. Thermoset granules or preforms are placed in a mold, and a press compresses the material, which undergoes chemical curing due to the heat and pressure. The result is a durable and resilient component with a specified shape.

• Applications: Production of electrical components, covers, and resistant elements.
• Advantages: High resistance to temperature and chemical exposure.

2. Injection Molding of Thermosets

Injection molding of thermosets is similar to thermoplastic injection, with the difference that thermosets cure in the mold under high temperature. The material is heated to the appropriate temperature, but instead of cooling as with thermoplastics, a curing process occurs, resulting in a rigid material that cannot be remelted.

• Process: Thermoset powder or granules are plasticized at a low temperature and injected into a mold. There, under high temperature and pressure, cross-linking occurs, leading to material curing.
• Applications: Components requiring high thermal and mechanical strength, such as automotive parts, tools, and electrical insulation.

Advantages of Thermosets:

• Durability: Once cured, they are resistant to high temperatures, chemicals, and deformation.
• Dimensional Stability: Thermosets retain their shape, do not melt or soften under heat, making them ideal for components requiring thermal stability.

These technologies are often used where high strength and chemical stability are required, such as in the automotive and electrical industries.

Insert Molding

Insert molding is a process in which metal or plastic inserts are placed in a mold, and then material is injected around them. The result is a component where the insert is integrally bonded with the plastic.

This process enables:

• Stability and strength: Metal inserts can enhance the structural strength of the final product.
• Functionality: Addition of features like threads, eliminating the need for additional assembly processes.
• Cost savings: Reducing the number of production operations and shortening assembly time.
• Applications: Mechanical parts, tool housings, automotive components, where durability and functionality are essential.

Both processes allow for the efficient combination of various materials and components into a single product, increasing the functionality, aesthetics, and durability of plastic parts. The choice between them depends on the specific application and the requirements for the final product’s properties.