Making the switch to Tritan™ MXF copolyester
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Working together to solve medical device challenges
Molders and brand owners come to us for many different reasons during the developmental journey of a medical device.
• You may have a totally new device and want the best-fit polymer to optimize its performance advantages.
• Your current material may not have the chemical resistance and toughness to meet changing hospital disinfectant protocols and more powerful drugs and carrier solvents.
• Recent regulations may be driving the need for more compliant materials.
Whatever the challenge, working with Eastman lets you access technical expertise and support every step of the way—to help position your device for end-state success.
By collaborating early and often during product development and manufacturing, we can help you work with product engineers, toolmakers, and downstream assembly partners to bring your project to market efficiently and profitably.
Here are a few of the benefits of working together with Eastman:
The effect of electron beam sterilization on Eastman Tritan™
Compared to gamma radiation, e-beam radiation typically costs less due to higher dose rates that reduce the time of exposure at the same target dose. The shorter exposure time also minimizes the oxidation reactions that can occur at the polymer surface, resulting in less effect on resin properties than with gamma radiation.
Overmolding with Tritan
Consider these factors for part design:
- Optimize part and TPE thickness for adhesion and dimensional stability. If the TPE thickness is in excess of the Tritan part thickness, you could see warpage when you remove it from the mold. Use a substrate thickness twice that of the TPE.
- Incorporate mechanical interlocks to improve TPE adhesion and promote part durability. Mechanical interlocks are important for thin TPE layers and very demanding fitness-for-use requirements.
Tips for tooling design with Tritan
Tooling design review is one important step in the process that will help determine what type of gating system is right for your device. Here are four quick tooling design tips for injection molding with Tritan:
- Proper gating selection
Select a compatible gating style for the selected resin. Most conventional cold gating styles work well with Tritan copolyesters, including sub, pin, fan, edge, sprue, and diaphragm gates.
- Design tooling with good cooling/thermal control
Copolyesters require good thermal control throughout the cavity for optimal processing.
- Design tooling with a plan for venting
Eastman Tritan™ copolyester—superior attributes for medical devices
Eastman Tritan™ copolyester is raising the bar for durability and cleanability in medical devices and housings. BPA-free Tritan’s attributes include exceptional clarity, toughness, improved heat and chemical resistance, and more. It’s also easy to process due to its unique chemical makeup relative to traditional thermoplastics. This blend of processing and performance properties provides greater advantages compared with other commonly used polymers. Available in clear and opaque formulations, Tritan offers many benefits to enhance innovative device designs:
Clear formulations of Tritan
- Greater toughness, heat resistance, processability, and design freedom
Keys to classifying failures for quality engineers
Medical device failures are a common—and costly—occurrence. They can lead to a product recall, affect the product development cycle, and result in extra expenses for manufacturers. The reasons devices fail can be complex, making it difficult for quality engineers to classify the problem.
What can quality engineers do to remedy this problem? Consider these factors:
- Understand why failures occur: Most device failures are caused by a misunderstanding of how a material’s properties, processing, and environment work together. In many cases, failures can result from a combination of wrong material selection, poor chemical resistance, high-stress design, or inconsistencies in manufacturing processes.
- Collaborate with your supplier: Working with material suppliers on material selection, testing, part and tooling design review, and secondary operations can give quality engineers access to knowledge and resources they may not otherwise have.
A safer connection for stopcocks
Eastman Tritan™ copolyester is resistant to a wide array of medical fluids, such as oncology drugs, drug carrier solvents, and lipids. Along with its toughness, low residual stress, and color stability post-sterilization, Tritan is an excellent choice for fluid management components.
Regulations in the medical market are constantly changing. When Elcam Medical, a world-class manufacturer of disposable medical devices for the OEM market, wanted to further improve the safety and efficacy of its fluid management devices, they turned to Eastman to find a polymer that complies with new regulations while still optimizing performance.
We are putting final touches on plans for Tritan on Tour!
Join us for Tritan on Tour—an exclusive event showcasing how new materials and manufacturing processes can improve medical device performance.
Hear new information about simulating, molding, bonding, and welding Eastman
Gain key insights on the latest with Tritan material and case studies; learn about speed to market through design for manufacturing/design for reliability (DFM/DFR).
Observe a Tritan tool running at the press and on-site presentations/demos from Nexeo Solutions, Beaumont Technologies, Henkel and Dukane!
Plus, we’ll begin the day with donuts and end with cocktails! Hope you can join in the fun!
Advanced Molding Technologies
8700 Rendova Street NE
Circle Pines, MN 55014
Secure connections for safer devices
Global design standards for tubing connectors are now helping improve patient safety and device efficacy. ISO 80369 requires small-bore connectors to be made of semirigid and rigid materials, making incorrect interconnections less likely. Enteral devices were the first of all the clinical applications to undergo this change.
To meet this standard, you may have to adjust your design, which means you may need a new mold or new materials. Eastman Tritan™ copolyester is a rigid material with the properties needed to comply with these regulations.