We complement life science

Your medical device is in expert hands with RKT. We specialize in innovative plastic parts for diagnostics, life science, and medical technology. With decades of experience in plastic injection molding and large-scale production, we utilize state-of-the-art technologies and systems.

What sets us apart is our ability to manage the entire value chain — from product design and custom mold construction to precise injection molding, assembly, and component filling, and final packaging and shipping. Whether it’s components, assemblies, or finished products, we provide complete solutions from start to finish from a single source.

Our Value Chain

You have a product idea. We’ll partner with you and guide you through the entire process to bring it to production with these steps:

Pre-Engineering

Part optimization
Functional integration
Part reduction
Tolerance analysis
Design for Manufacturing
Simulations
Geometrical product dimensions and tolerances

Toolshop

Tool design
Tool assembly
2/3 component injection moulding
Hot/cold runner
Surface optimization
Tool testing – own test centre
High-cavity tools and tools optimization with high-speed camera analysis

Validation

Tailor-made validation strategies
FMEA
DQ, IQ, OQ, PQ
Documentation, DOE and Pro-OP
Filling studies
Thermographical studies
Polariscopical analysis

Injection Moulding

Technical thermoplastics
Filled, magnetic and conductive plastics
IMD (In-Mould-Decoration)
IML (In-Mould-Labelling)
Production environment (white room IS0 7 + 8)
Multi component injection moulding (2k/3k)
40 – 300 tons
Transparent injection moulding (lenses)

Handling

6-axis robots
Linear handlings
Cavities separation
Integrated camera inspection
Own handling tool-shop

Printing & Galvanisation

Plasma pretreatment
Multi colour
Tampon print, hot stamping and laser print
Technical galvanisation
Serialisation
Conditioned production environments

Assembly

Manual, semi-automatic, automatic
Round transfer
Modul assembly
Complete device assembly
Functionalisation of substrates
Liquid spotting (mikro), lyo handling
Bonding (thermal, UV, laser)
Small and high-volume serial assembly

Packaging/Sterilisation

Parts, modules, devices
Tray and double bags
Blister, Tyvek, labelling
Sterilisation: Gamma, ETO, external service partner
Traceability/UDI

Logistics

Direct shipments
Air freight handling (LBA certified), sea freight
Temperature controlled shipping
Consignation stock management
Stock management & EDI exchange
Global logistics services
Customs clearance

Quality management

Quality planning according to APQP standards
Sampling according to automotive standard (PPAP, PPF, etc.)
Validation according to medical standard (IQ, OQ, PQ DOE etc.)
Compliance with customer requirements

Measuring technology

Computertomographie CT (with local service partner)
Roughness testers
Tensile testing
Optical testing
Confocal lasermicroscopic testing

In Process Control (IPC)

Series production 3-shift support
Microscopic examination
Measuring test (manual and automatic)
Functional testing

You can read more about our value chain here.

Looking for Some Project Examples?

Here are our latest cases:

PCR Test Cartridges for a Start-Up

RKT produced PCR test cartridges for detecting MRSA and SARS-CoV-2 pathogens under rigorous ISO class 7 clean-room conditions for a start-up client, automating nearly every step of the process.The aim was to accompany the company into industrial series production and to establish in-house process expertise for microfluidic products.
To the PCR test cartridges Case Study

Mini Lab Disk for Skin Diseases

We oversaw the volume production of a lab-on-a-chip disk used for the detection of skin psoriasis and also distinguished it from eczema. In the use case, we describe the close collaboration with the Hahn-Schickard-Gesellschaft, which is responsible for the pre-series and small series.
To the Mini Labor Disk Case Study

Good to Know

Producing medical components requires understanding and compliance with strict legal hygiene standards. It requires extensive expertise in plastics, material properties, toolmaking, and injection molding processes. Plastics must be biocompatible, chemically resistant, sterilizable, and traceable. Microfluidic applications involve aligning fluidic functions with injection molding needs, such as incorporating suitable draft angles and radii to prevent material stress. In addition, at RKT, each production step is carried out in ISO class 8 or 7 clean-room environments per customer requirements for which our employees are specially trained.

Early planning of all process steps is crucial when transitioning innovative medical products to full-scale production. Processes that do well with low-volume prototypes may face challenges in large-scale production if details such as injection mold needs aren’t carefully considered early. Startups should involve an industrial partner early to identify and address issues related to volume production, including product design, material selection, assembly methods, and packaging. This proactive approach helps ensure smooth scalability and reduces potential hurdles down the line.

Multi-component injection molding combines two (2K) or three (3K) different plastics into a single component in one injection molding step. This eliminates extra assembly steps, saving time and logistics costs. It’s ideal when combining plastics that offer technical or visual benefits. The process demands extensive expertise, including material knowledge, custom tool construction, and injection mold processing skills including precise temperature control for each material involved.

Injection molds with more than eight cavities are known as high-cavity molds. They are typically utilized and cost-effective for smaller, simpler components needed in large volumes. RKT is well experienced with high cavity tools and recently successfully launched multiple 128 cavity tools. Special considerations must be taken in mold design and construction to ensure all cavities are absolutely identical in dimensions and surface finish to ensure consistent part quality across the mold.

Our
Sustainability Vision

Protecting people and the environment and using resources responsibly are core values at RKT. Sustainability has been ingrained in our corporate culture for years. Explore what sustainability means to us and the specific projects we are actively pursuing.

From Our Blog

Please visit our blog for insights on plastics and process knowledge, updates on current projects, detailed case studies, and other news.

Blog

From Idea to Volume Production in 8 Steps

You have a good idea. You might even have a prototype. But what about the know-how and skills needed to begin production? Transitioning to full-scale production requires specific know-how and capabilities that startups often lack. In this article, we will provide eight key strategies to effectively scale up your product from concept to stable, full-scale production.

Blog

Plastics in Medical Technology

Plastics play a crucial role in medical technology, but suitability varies by application. Regulations governing medical-grade plastics are tailored to specific uses such as patient interaction, diagnostics, and packing requirements.