Metal-plastic composites

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HECHT + DIEPER is a tech­nologically leading com­pany in the injection moul­ding of plastics tech­nology. It has many years of engineering experience and by using the latest tech­nologies reaching from development, mould con­struction, to tool pro­duction and manufacture HECHT + DIEPER is able to manufacture innovative plastic products of the highest precision.

The development and production of plastic parts – reaching from conceptualisation to production takes place under one roof: A prerequisite for short development phases and high product quality.


We overmold metal parts or sensory components.

We overmold metal parts or sensory components, such as magnets, with thermoplastic materials in semi- or fully-automated production cells.

The constructive metal-plastic connections open up design advantages and savings in assembly: assemblies that would otherwise only be built up using several individual joining processes can be manufactured in a single operation by overmolding one or more individual metal parts with different properties and functions.


High design freedom and a higher load capacity in the event of temperature changes or impacts.

Overmolding offers a high degree of design freedom as well as a higher load capacity in the event of temperature changes or impacts compared to assemblies consisting of several individual parts.

Overmolding of metal parts also offers greater process reliability compared with other joining methods such as adhesive bonding or welding, especially for sensor components.


From the idea to production - everything under one roof

We stand for pioneering solutions made of plastic

A selection our realized products

Automotive Construction and furniture fittings
Automotive Sensor unit: magnet and brass ring connected by plastic encapsulation
Money Machines Durability test sensor

Make use of our expertise

You value quality. So do we.

Make use of our many years of experience and let us talk about your concerns.

The benefits of collaboration with HECHT + DIEPER

HECHT + DIEPER is your expert in injection moulding of plastics.



During development, our customers benefit from our many years of expert knowledge, in the area of design, our own toolmaking, as well as our competence in production.



Together - as specialists, we know that only the joint development of components is the best prerequisite for the optimal functionality of your product.



Since more than over 40 years we have been developing and producing technically challenging components of the highest precision for various industries.



In order to be able to deliver quickly, we believe in long standing and reliable cooperation with local logistics partners.



Regular optimization in development, toolmaking and production is a continuous process for us and thus the foundation for high efficiency and customer satisfaction.



Everything is local. We develop and produce plastic components - from the idea to production - one-stop. Our service enables short communication channels.