The Journal of Industry and Technology

Industrial Analytical Instrumentation

Euro Technology

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Life sciences and clinical instrumentation

DuPont Delrin acetal enhances reliability
and usability of disposable insulin pen

A leading global pharmaceutical company is using a low friction, impact-resistant grade of Delrin® acetal homopolymer resin for two components in a new insulin pen.

This grade of Delrin®, which complies with healthcare regulations, is used in two threaded components responsible for the dose accuracy of the system. The low friction nature of Delrin® acetal homopolymer is credited for lowering the friction inside the pen mechanism and therefore reduce e.g. the injection force to be applied by the patient. The excellent impact strength of Delrin® helps protect against breakage in case the pen is dropped.

The system was developed in close cooperation between the OEM, its consulting engineering firm, the moulder and DuPont's application development experts.

The high-flow rate of Delrin® allows the use of highly productive multi-cavity hot runner moulds, resulting in cost-efficient and low-scrap manufacture of small components down to 0.1g. In addition, Delrin® also offers excellent dimensional stability.

Laurent Hanen, DuPont Performance Materials European segment leader - Medical, said: "The healthcare industry is a very demanding market driven by consumer needs and guided by regulations. As such, our broad materials portfolio, design support and technical excellence can help customers to meet their most stringent requirements."

DuPont has proven and demonstrated its ability and expertise during the development and test phases of the two components. As a result, the customer was able to validate the part made of Delrin® acetal homopolymer with full confidence of performance in use, reducing development lead time.

The DuPont healthcare product portfolio* offers excellent structural properties and moulding characteristics often facilitating the design and production of thinner and lighter parts. Several grades offer high flow rates to ease the moulding of geometrically complicated parts.

In addition, the portfolio requires minimal or no finishing operations, delivers rapid production cycles, and provides greater durability for longer life to help create cost savings. DuPont actively supports customers by assisting in material selection, tool design, and moulding optimisation.

The DuPont healthcare product offering complies with food agency regulations, ISO 10993-5 and -11 and USP Class VI testing requirements. Specialty healthcare products are also manufactured following Good Manufacturing Practice (GMP) guidelines.

DuPont Performance Materials (DPM)
DuPont Performance Materials (DPM) manufactures a vast array of plastics, elastomers, renewably-sourced polymers, adhesives, sealants, modifiers, and high-performance parts and shapes to global    specification around the world. DPM also supports a globally linked network of regional application-development experts who work with customers throughout value chains to develop components, films and consumer products that enable greater mobility in automotive, protect and preserve in packaging, and improve convenience, comfort and safety in these and other industrial and consumer markets, including construction, electrical/electronic and sporting goods.

DuPont (NYSE: DD) in profile

DuPont has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment.

For further information about DuPont and its commitment to inclusive innovation, view website: 
Refer to page 851

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