TONVA unveils automotive CVJ cover blow molding systems at TAPAS Exhibition

TONVA showcased automated blow molding systems for CVJ covers at the TAPAS Exhibition in Taizhou, China, highlighting full-electric and hybrid machines built for precision automotive parts. The company pitched the systems as a response to rising quality, energy-efficiency and production demands in global EV and drivetrain supply chains.

Why it matters: - CVJ covers, or CV boots, protect drivetrain joints from grease loss, dust, water, salt and debris. - Failure in a CVJ cover can lead to rapid joint damage and vehicle downtime. - Automotive suppliers are under pressure to make lighter, more precise parts for EVs and other high-torque platforms. - TONVA is positioning its blow molding systems as a way to meet those demands with tighter quality control and higher output.

What happened: - TONVA showcased automotive blow molding systems at the TAPAS Exhibition in Taizhou, China, on August 19, 2026. - The display focused on production equipment for CVJ covers and other high-performance thermoplastic parts. - The exhibition drew engineers, supply chain specialists and international buyers. - TONVA highlighted full-electric and hybrid systems built for automated production.

The details: - CVJ covers must keep uniform wall thickness across deep convoluted shapes. - The parts must withstand thermal swings, repeated flexing and chemical exposure over long service lives. - Traditional elastomers are being replaced in many applications by thermoplastic elastomers (TPE) and thermoplastic copolyesters (TPC-ET). - TONVA's systems use multi-layer co-extrusion and advanced parison programming. - The machines support single-layer through six-layer structures. - High-precision die heads are designed to improve material flow and reduce weak points. - The systems are built to process a wide range of engineering plastics. - TONVA also points to a dedicated CVJ cover blow molding case that combines continuous extrusion with an intelligent clamping mechanism. - The workflow includes automated deflashing and trimming, which removes a manual secondary step. - The configuration is intended to improve tensile recovery and puncture resistance in high-volume production. - TONVA says the machines use optimized screw designs for thermoplastic elastomers and complete material homogenization. - The company says the systems reduce cycle times while maintaining clamping-force distribution across the mold surface.

Between the lines: - The push toward full-electric and hybrid equipment reflects rising demand for lower energy use and more repeatable manufacturing. - Automotive buyers are increasingly focused on carbon-reduction targets and tighter supplier standards. - TONVA is using exhibition-floor visibility to signal credibility in a market where precision and consistency matter as much as throughput. - The company's pitch also relies on scale, with references to thousands of machine sets operating in more than 120 countries. - Certifications including ISO9001:2016, CE and SGS are part of the company's quality message. - TONVA also emphasizes ongoing R&D and dozens of active patents as proof of technical depth.

What's next: - TONVA is directing buyers to its corporate portal for technical specifications, company background and product portfolios. - The company is likely to keep pushing customizable blow molding platforms as automotive part designs change. - Future demand appears tied to EV growth, stricter efficiency standards and the need for adaptable hollow-part production.

The bottom line: - TONVA is trying to turn precision blow molding into a competitive advantage for automakers and suppliers that need reliable CVJ cover production at scale.