Engine Hose Component Manufacturing Optimization

Process Conversion from Extrusion to Injection Molding with 100% Leak Test Validation

Project Overview:

Inter Rubber, an IATF 16949 certified automotive rubber manufacturer in Thailand, partnered with a Japanese automotive manufacturer to develop engine air and drainage hose components, converting the manufacturing process from rubber extrusion to injection
molding.

This process change reduced production cost while maintaining equivalent component performance, with improved dimensional consistency and production stability for high-volume automotive applications.

Our Solution:

Inter Rubber re-engineered the manufacturing approach by converting the process from rubber extrusion to precision injection molding, enabling tighter control over part geometry and sealing interfaces.

Engineering scope included:

• Mold redesign and cavity optimization
• Injection parameter stabilization for consistent part quality
• 100% leak test validation protocol
• Process capability verification for mass production

Results:

• Achieved 100% leak test compliance
• Improved sealing reliability and dimensional consistency
• Reduced process variation and enhanced production stability
• Reduced production cost while maintaining equivalent component performance.
• Established a stable process for high-volume manufacturing under IATF-controlled systems

Looking for an automotive rubber manufacturer and solutions in Thailand with proven injection molding expertise?
Inter Rubber delivers precision-engineered rubber components built for OEM applications, combining process expertise, material
knowledge, and certified quality systems to support reliable, scalable production.