Production COVID-19 rapid test devices possible thanks to innovative printing process SPGPrints

Due to the immense pressure COVID-19 puts on societies worldwide, pharmaceutical companies strive to make rapid test devices available to the public as soon as possible. However, to do so, innovative techniques have to be used to meet the necessary medical requirements. Due to their experience with biosensors and their reputation of creating foolproof, reliable systems, SPGPrints was asked to be involved in the development and delivery of several production lines to produce COVID-19 rapid test strips. Millions of test strips are expected to be produced on both production lines, in which way SPGPrints contributes to a solution for the increased global demand for more test capacity.

The use of biosensors in rapid medical testing

Hank Guitjens, Commercial Manager Label & Industrial Printing, SPGPrints, explains that the usage of biosensors around the world is not new. For over 30 years, biosensors are a quick tool for analyzing diseases, using just a strip and body fluids. A common application of biosensors in the medical industry are the glucose test strips for diabetes patients. They use these strips to test if their blood sugar levels are deviating from normal. To provide the patient with quick test results, the blood is dripped on a test strip which is then examined by a diagnostic test device. Within minutes, the patient can see what their exact levels are. These biosensor test strips contain an advanced piece of technology.

The film used for the test strips must be printed in such a way that it can absorb the body fluid and provide the optimal conditions for this reagent to react with the body fluid. SPGPrints specializes in and holds the correct innovative technique to print the film with the level of precision that is required for these test strips.

The creation of COVID-19 rapid test devices

For this exact reason, SPGPrints was invited by an international pharmaceutical company to be involved in the production of COVID-19 rapid test strips. The goal was to produce a diagnostic test system that — with use of a patient’s saliva — could quickly indicate if a patient suffered from COVID-19 or not. In this international cooperation, it was up to SPGPrints to develop a process for printing on film. In the printing process, high levels of accuracy were crucial since the newly developed chemical reagent could only function properly under optimal conditions.

The collaboration turned out to be very successful. Within less than a year, SPGPrints managed to develop, produce and deliver a custom-made system for their pharmaceutical partner. Despite it being a new, custom-made system, the startup phase was very successful. Accordingly a yield was achieved above expectation within weeks. On top of that, newly hired operators needed limited training due to the user-friendliness of the system. Which means the partner could start producing directly. This enabled the pharmaceutical partner to reach their ideal production levels within weeks after the new system had been delivered.

Custom label printing by SPGPrints

SPGPrints’ specialization in rotary screen printing made them the right partner for this project. Due to their expertise on biosensors the project started quickly. Rotary screen printing provides users with several advantages over other screen-printing techniques. It provides great accuracy, high quality levels and helps users to increase their productivity. But most importantly, it enables users to quickly scale up their printing process. For that reason, some users start out with flatbed printing but switch to rotary screen printing once their product has to be produced on
a greater scale.

Due to its many advantages, rotary screen printing proves to be the ideal technique for many applications. Besides biosensors, SPGPrints uses its rotary screen-printing techniques for the creation of — amongst others — printed electronics, flexible solar cells, RFID tags and printed batteries. The possibilities are endless.  Over the years, SPGPrints has helped many customers with a custom-made printing process suitable for their application. Due to their years of experience, SPGPrints can provide its customers with advantages no other supplier can. SPGPrints is well known for its unique mesh material, a 100% electroformed nickel mesh which gives it its unique stability and print performance. For the graphical and industrial market printing modules can be supplied in width from 250 mm to 1400 mm.

Complete line configurations are provided by SPGPrints when needed

If total solutions are needed SPGPrints can supply complete line configurations including hot air dryers, NIR, IR and UV. The systems are equipped with a sophisticated tension control system. It also can reach a register accuracy of at least 100 microns. At SPGPrints, each project is considered as being unique and therefore receives a custom-made solution that matches all requirements. During a rotary screen-printing project, SPGPrints works closely together with the client’s team so their engineers truly understand their wishes and expectations. After which SPGPrints will convert these wishes into a custom-made solution. As was successfully done in the COVID-19 rapid test devices project. Due to a close collaboration between SPGPrints and the client, millions of test strips are expected to be produced in the upcoming months.


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