Revolution in Hybrid Connections

Join metal + plastic in seconds

A person adjusting component for a thermal joining process

Revolution in Hybrid Connections

revolution
in hybrid connections

Join metal + plastic in seconds

Revolution in Hybrid Connections

revolution
in hybrid connections

Join metal + plastic in seconds

[the mission]

We transform manufacturing with thermal hybrid joining of metal and plastic – a fast, cost-efficient, and fully recyclable alternative to gluing, welding, screwing, and overmolding. hyJOIN® enables lightweight & disruptive designs, sustainable production, and a circular future.

[benefits]

Key Advantages

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High Performance Joining

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Media Tight Connections

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Cost Efficient Process

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Aging Resistance

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Lightweight Design

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Fully Recyclable

[thermal direct joining]

Our IP. Our Technology.

hyJOIN® provides an innovative solution for metal-plastic joining using the process of thermal direct joining, also referred to as thermal hybrid joining. In this method, the metal is precisely heated so that the plastic melts on contact and, once cooled, forms a durable hybrid bond. This advanced technology replaces conventional methods such as gluing, welding, screwing, or overmolding and enables lightweight, recycling-friendly designs. Discover more about this sustainable joining process, which works entirely without adhesives or additional materials, opening new possibilities for product innovation.

[ 01 ]

Pre-treat

Laser Structuring of Metal Component

Laser Structuring of Metal Component

[ 02 ]

Component Fixation

[ 03 ]

Electromagnetic Induction and Pressing

[ 04 ]

Joined Component
[industries & applications]

Your product with
our solution

Automotive & Mobility

Battery housings & modules (e-mobility), Body & structural components, Interior/exterior parts (handles, consoles, trims)

Consumer Goods & Household

Household appliances (coffee machines, refrigerators, washing machines), Power tools (drills, mixers, garden tools), Sports equipment (bicycle components, fitness gear, outdoor equipment)

Electronics

Connectors & interfaces, Sensor and actuator housings, Thermal management, and cooling solutions (heat sinks with plastic housings)

New Energy

Battery modules & packs, Hydrogen systems (tanks, valves, pipelines), PV & wind components (housings, structural elements)

Healthcare / Medical

Medical device housings (pumps, analyzers, scanners), Sterile instruments (reusable & recyclable), Implant-related components

Aerospace & Defense

Cabin & interior components, Structural parts (titanium-plastic hybrids), Electronic housings (avionics systems)

Industrial Solutions

Pumps & valves, Machine & drive housings, Functional modules for industrial systems

(Any) industry

These are just examples. Our solutions adapt to countless industries wherever plastic and metal need to be joined.

coreJOIN® compact joining module for metal-plastic connection
[news & updates]

News and updates from the team

Stay hyjoined with our latest updates

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hyjoin GmbH
27 Aug 2026
linkedin
Still yapping! 🎬


🔹 When the CEO is hands-on with the technology
🔹 When the team intro turns into a 20-minute laughing fit
🔹 When the Social Media manager jumps into the bushes to find our logo
🔹 When we explain for the third time how "HYJOIN" is meant to be spelled
🔹 When the camera starts rolling and everyone suddenly acts professional
🔹 When we pretend this is just a normal, professional day at the TechLab
🔹 When the best content idea of the day happens completely by accident
🔹 When the coffee break runs way longer than planned
🔹 When everyone's a little sad the day is already over
 
Then you know: the CU Social Media & Marketing team was there :\)

Great to have had you onsite at our TechLab @Jule Lengsfeld @Julia Konrad @Composites United. More from the day is coming soon to find at our TikTok channels!

Links in the comments.

we are on

a mission

[careers]

Join the club – shape the future of joining

At HYJOIN, we combine industrial excellence with start-up spirit. We are bold, agile, and passionate about technology and sustainability. Join our team and help us build disruptive products, expand into new industries, and drive international growth.

See How To Apply
A person working with a microscope