Thermoplastics can be processed using heat and precisely shaped through injection moulding. Silac manufactures plastic components using single-component injection moulding (1K) and two-component injection moulding (2K). This enables solutions for a wide range of applications, from packaging and closures to technical plastic components.
Silac processes thermoplastics into custom products in a variety of shapes, colors, and material properties. Depending on the requirements, the company produces hard, flexible, transparent, colored, or reusable solutions.
Thermoplastic parts with a clear function are in particularly high demand: hinges, seals, dispensing solutions, reusable products, or packaging components that function reliably in everyday use.


Silac manufactures thermoplastic parts in Euthal using 27 injection molding machines with clamping forces ranging from 50 to 230 metric tons. The design, tooling, production, finishing, assembly, and logistics departments work closely together. This allows technical issues to be resolved early on and adjustments to be coordinated directly in-house.
This means:

A thermoplastic box made from a high percentage of recycled polypropylene. The product is ISCC PLUS-certified and demonstrates how more sustainable materials can be used in demanding applications. The box can be opened and closed with one hand.

Silac developed a reusable lid for the Amselspitz yogurt produced by the Buttikon Dairy. The solution combines design, leak-proof performance, hygiene, and ease of use. Close collaboration between tooling and production was key to this project.

The Flex-Spring closure was developed by Silac and is suitable for high-stress packaging applications. The lid can be opened with one hand. The hinge is fully integrated into the closure and offers an opening angle of just under 180 degrees.
Additional application examples from various industries—from packaging to leisure:
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