High-Precision LSR Injection Solution for Fuel Cell Sealing Applications

Overview:

A leading clean energy manufacturer required a reliable solution to produce high-precision liquid silicone rubber (LSR) seals for fuel cell components. The challenge was to ensure uniform sealing performance without affecting the gas diffusion layer (GDL) functionality.

Challenges:

• Ultra-thin and precise sealing required

• High consistency in mass production

• Avoid defects such as voids or uneven thickness

• Integration with automation system

Solution:
We provided a fully automated vertical LSR injection molding system equipped with:

• High-precision servo-driven injection unit

• Rotary table for simultaneous molding and demolding

• Integrated dosing and mixing system

• Vision inspection system for quality control

Results:

• Cycle time reduced to ~50 seconds

• Improved sealing accuracy and consistency

• Nearly doubled production efficiency

• Stable mass production with minimal defects

Application Industry:
Hydrogen energy / Automotive / Clean technology