Norck: Your Partner for Precision Liquid Silicone Rubber (LSR) Molding

Norck delivers high-quality LSR molded components, empowering engineers, designers, and manufacturers across medical, automotive, consumer goods, electronics, and other sectors to harness the unique properties of silicone.

Capabilities for LSR Molding Excellence:

• Specialized LSR Injection Molding Machines: Metering, mixing, and injecting of low-viscosity LSR material with precise control over injection parameters and cycle times for consistent quality.
• Advanced Mold Design & Tooling: Molds engineered for optimal LSR flow, rapid curing, and efficient part release, utilizing automated handling where necessary.
• Material Expertise: Guidance on selecting the right LSR grade for biocompatibility, chemical resistance, temperature range, and your application's unique requirements.
• Cleanroom Molding Capabilities: Available for medical components and other applications requiring a strictly controlled production environment.
• Value-Added Services: Post-curing, secondary operations, finishing, and assembly to deliver complete component solutions.

Norck's Engineering Edge: It's About More Than Silicone

• Design for Manufacturability (DFM): Early collaboration to optimize part designs for efficient LSR molding, maximizing performance and reducing costs.
• Process Optimization & Automation: Fine-tuning injection parameters, cure cycles, and automation to ensure consistent quality, speed, and repeatability.
• Rigorous Quality Assurance: Dimensional inspection, material testing, and process control to guarantee biocompatibility, purity, and functional performance.
• Focus on Critical Applications: Extensive experience working with LSR for demanding medical devices, food-grade components, and harsh-environment seals.

Why Choose Norck for LSR Molding?

• Complex Geometries & Undercuts: LSR's flexibility accommodates intricate part designs, overmolding, and features difficult to achieve with other elastomers.
• Exceptional Performance & Durability: LSR components withstand thermal extremes, harsh chemicals, UV exposure, and demanding environments.
• Precision for Demanding Industries: Tight tolerances and consistent material properties for critical applications in healthcare, automotive, and beyond.
• Scalability to Your Needs: From rapid prototyping with LSR to high-volume production, ensuring a seamless transition and meeting market demand.
• Your LSR Solutions Partner: We guide you from material selection and design optimization through final production and quality checks.

It is a rubber molding process that injects rubber into a mold to form the desired shapes. Mold is made from hardened steel and contains the body of the part to be molded. The liquid silicone rubber molding process is used for high and medium-volume production.

Liquid silicone rubber molding offers many advantages:

• Flexible parts: Since the material is silicone.
• Flexible design: The design rules are not as strict as injection molding of thermoplastics.
• No sink marks: Even when there are different thicknesses, silicone parts will not present sink marks.
• Undercuts are acceptable to a degree: Due to the material's flexibility, undercuts are acceptable.
• Resistant against chemicals
• Costs less than injection molding

But there are some disadvantages as well:

   -  Complex tooling: Two barrels, a static mixer, etc., makes the tooling more complex.
   -  Longer cycle time: LSR would take more time to finish a cycle
   -  Less accurate tolerances: Due to the material's flexibility, the silicone parts don't have accurate dimensions as a thermoplastic injection molding part.

Like in injection molding, Liquid Silicone Rubber is injected into a mold to form the desired shape, but with minor differences:

1. Mixing materials: The injected material is composed of two substances, which get mixed in a mixing chamber before being injected. The liquid silicone rubber runs cool to prevent the rubber from curing. While the liquid injection molding requires a low pressure (<1000PSI), the required pressure for LSR is between 1450 to 14500 PSI.

2. Injection: The mold is closed, and the screw will advance to increase pressure in the injection chamber and inject the mixed liquid silicone into the mold. The clamped cavities are heated to cure the liquid silicone and are maintained close until the solution solidifies.

3. Heating: After injection, the silicone will be heated to become solid.

4. Ejection: The Die is opened, and the part is ejected manually or automatically.

Obtaining a fully functional part might require extra processing for features that can't be made with the Injection molding process, such as taping. The designed part should follow injection molding design guidelines.

Norck is a technology-powered manufacturing leader specializing in CNC machining, 3D printing, sheet metal fabrication, and injection molding. Our intelligent, data-driven approach ensures exceptional quality, optimized costs, and seamless supply chain management for companies worldwide.

Key Services:

• Precision CNC Machining: High-quality custom parts and components.
• Advanced 3D Printing: Rapid prototyping and complex production parts.
• Sheet Metal Fabrication: Custom fabrication solutions across materials.
• Injection Molding: Scalable production for plastic parts.

Why Choose Norck?

• AI-Powered Manufacturing: Data and AI optimize our processes for superior quality, minimized costs, and supply chain visibility
• Vast Production Capacity: Our extensive partner network in Europe and the US guarantees both low and high-volume production.
• End-to-End Expertise: Our team of engineers, data scientists, and product developers ensure design for manufacturability and unparalleled service
• Single-Source Solution: Norck streamlines your supply chain, reduces overhead, enhances purchasing power, and delivers just-in-time results.

Experience the Norck difference. Get a quote fast for your manufacturing needs today!