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Pioniere für Elektronikverguss und im Low Pressure Moulding | Optimel Schmelzgußtechnik GmbH Pioniere für Elektronikverguss und im Low Pressure Moulding | Optimel Schmelzgußtechnik GmbH

Pioneers in Low Pressure Moulding

Know-how and enthusiasm for moulding of electronics

OptiMel emerged in 1995 from a development group at Henkel KGaA, which was concerned with the possible uses of newly developed thermoplastic hotmelts. The aim was to offer the Low Pressure Moulding process based thereon - also called hotmelt moulding - worldwide for sealing cable harnesses in the automotive industry and to be able to deliver the appropriate processing systems.

In the years that followed, the process became increasingly interesting for other industries as well, in order to gently,efficiently and reliably protect electrical and electronic components against external influences and is therefore now a recognised process in many areas. OptiMel, separate enterprise since 2001, has become a full-service provider, offers the matching solutions for every project based on more than 25 years of experience and accompanies you through the entire implementation process with extensive know-how. 

Our scope of services includes technology and project consulting as well as the sale of project-specific processing equipment consisting of machines, moulding tools and peripherals, advice and sales for Technomelt® moulding materials as well as comprehensive support and services.

Through innovative processes, technical development and the still close partnership with Henkel, as the manufacturer of Technomelt® materials, we are constantly expanding the application possibilities of the LPM technology. Our way of working is characterised by a high degree of customer orientation, coupled with flexibility and a high quality standard.

Your partner for machines and production materials

Based on years of experience and with the aim of maximum flexibility, we have developed a machine system that is oriented towards the respective requirements.

We no longer built any standard models - our modular system including machines and accessories can be precisely tailored to your projects and production conditions.


Please, find  the suitable equipment for your project here,

We deliver all available Technomelt® materials for the Low Pressure Moulding technology - with flexible and service-oriented offers for your respective project.

Samples are just as possible here as individual delivery quantities and delivery schedules, through to annual framecontracts with corresponding special conditions.


Find the right material here,

Our service for your projects

Technology consulting

The introduction of new technologies begins long before the required production equipment is purchased. We will advise you from the start, share detailed knowledge of the technology and carry out feasibility analyses.


We analyse the matching moulding material based on your requirements, carry out spot tests for adhesion analysis and create prototype tools for test samples and pre-series production.

Tool design

At the heart of every project, many details are crucial for a stable and efficient process. We advise on component design, manufacture high-quality tools and carry out mold flow analyses.

Process design

Cycle times, pressure, processing and mold temperatures play a decisive role in project-related process design. We determine these parameters and advise on the optimisation of ongoing projects.

Equipment configuration

Suitable equipment is defined by the specification of the project, production conditions and, if applicable, future projects. The configuration is aligned to your requirements based on the modular machine programme and extensive accessories.

Allround service

With advice on process optimisation, training for your staff, various maintenance options and spare parts service, you can also make use of our know-how and support during a running production. 

OptiMel Studio

Would you like to get to know us or use our services without the effort of travelling ?! - We can switch you into our studio and it's almost like you're there.


Whatever demands and challenges your project has - our team is here for you: 

+49 2371 - 1597 0

What pioneers consider important

For us, it is not only important what we do - full service in Low Pressure Moulding - and why we do it - in order to offer our customers an optimal solution for the protection of electrical and electronic components - but also how we do it - with awareness and responsibility for our environment and ourselves. We are convinced that everyone contributes to what kind of world we will live in in the future. That is why we want to live up to our responsibility as a company in the industrial state of North Rhine-Westphalia and, with our commitment and our decisions, contribute to sustainable business that is oriented towards the common good.

Picture: Wiesner Messearchitektur GmbH   

Pioneers work

29.Aug 2023 Sustainability
OptiMel CO2 report 2022

Our new CO2 report for 2022 is now available and again shows a noticeable reduction compared to the previous year. Further savings measures have already been implemented or are being planned so that we can continue on this path.

Low Pressure Moulding Systemlösung |Optimel Schmelzgusstechnik GmbH
24.Jan 2023 Fairs and congresses
Electronics molding – experience it up close in 2023

Live and always with the latest news, we present the Low Pressure Molding technology for electronics molding every year at various events.Both at trade fairs and in talks at workshops, congresses and symposia with different industry focuses, we show the process and equipment in detail and offer individual exchange on the requirements in a wide variety of applications. We have already planned the following dates for 2023:Henkel AEI Electro Days – Expert Talks LPM March 13th in DüsseldorfSmans NV Cable and Wire Inhouse Show March 14th  – 16th  in Turnhout BE Smans | Cable & Wire In-house Show 2023Kuteno May  9 th   – 11 th  in Rheda-Wiedenbrück - KUTENOProductronica November 14 th –17 th in Munich productronica | Trade fair electronics development production… further events will follow.Low Pressure Molding (LPM) is a process for electronics molding, means protection of electrical and electronic components (such as printed circuit boards or sensors) against vibrations and shocks. LPM insulates against heat, cold, moisture, weather in general and electrical energy. The design is space-saving, cost-effective and individually designable.Thermoplastic hot melt adhesives are used as molding compounds. The predominantly pollutant-free materials based on dimer fatty acids are liquefied by heating. They can be introduced into moulds at low pressures and solidify when cooled.Against the backdrop of increasingly compressed installation space and growing power densities, the demands on the design of electric and electronic components are rising. Encapsulation processes and materials are among the decisive factors for the durability of electrical and electronic assemblies.Originally developed for and in collaboration with the automotive industry, the process has now become an established manufacturing technology in many areas of electronics production and is used in various industries. You can also find more information in our detailed white paper:

06.Oct 2022 Fairs and congresses
electronica 2022 Munich

After a 4-year break and electronica virtual in 2020, electronica Munich will open its doors again.OptiMel presents the Low Pressure Moulding technology for efficient protection of electrical and electronic components in its entire range. And as always, we also show new developments.We look forward to meeting customers and partners there again, making new contacts, discussing projects and having intensive talks.We cordially invite you to visit us in hall A 2 booth 301 - you can request your personal ticket voucher via our contact form.