Thread creation

AMTEC®

High-strength thread inserts for plastic components

AMTEC® HITSERT 2 thread insert for plastics

Thread creation

Embedding in plastic

AMTEC® stands for “After Moulding TEChnology” and refers to the installation of thread inserts in plastic components after moulding. Our AMTEC® thread inserts enable you to achieve the advantageous synergy effects resulting from high-strength metals in combination with plastics.

Plus factors

Advantages of AMTEC®

  • Shorter injection cycles

    No wasted time. The component injection moulding process takes place automatically without the need to insert metal parts. Safe production can also be guaranteed.

  • Low-stress anchoring

    High pull-out and torsion values. Because the plastic is heated during installation, as it cools, it creates a tight fit with low stress.

  • Reduction in manufacturing costs

    Saves costs while maintaining top quality. AMTEC® thread inserts have been specifically designed for after moulding installation. The result is a wear-free, high-strength thread in your high-quality plastic components.

Method and principle

Three ways to achieve high-strength threads in plastics

Heat element welding (HEW)

Heat element welding is a tried and tested joining technique to embed metal thread inserts into thermoplastic mouldings. During the single-phase process, contact heat is transferred to the joining zone of the plastic via the metal insert. Joining takes place on fusion of the plastic at the contact surface. During this process, the plasticised mass is forced into specific recessed areas and undercuts to produce a form-closed joint.

Electromagnetic resistance welding (ERW)

ERW (electromagnetic resistance welding) is a technique developed by KVT Bielefeld for the joining of metal and thermoplastics. An electromagnetic AC field heats the thread insert without contact and the contact surface of the plastic component is plasticised. During the simultaneous joining process, the melted material is forced into recessed areas and undercuts.
Metal elements of any size are heated up extremely quickly (approx. 2 – 6 s). After switching off the power supply, accelerated cooling of the melt takes place, allowing an installation accuracy of up to 0.05 mm.

Ultrasonic welding (USW)

USW is a process that was originally developed for joining thermoplastic parts. Within a very short time, the plastic material is plasticised by boundary-layer friction and vibration absorption of the parts to be joined. This is followed by the joining process. The necessary energy is generated as alternating voltage in the ultrasonic generator, converted into mechanical vibration (20 – 40 kHz) and then introduced with a sonotrode. With the embedding of thread inserts (metallic M 2 – M 6) in the thermoplastic material, the melted material is forced into recessed areas and undercuts.

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Find the right solution for your application

AMTEC® product types

For the full variety of applications, we offer a selection of different thread inserts for plastics.

Video

AMTEC® technology

Find out about our various thread inserts for plastic components.

Any questions?

We are here to assist you

Want to know more about our products or services? Our team will be happy to advise you.

Contact us