High Performance Polymers – A Great Alternative for Medical Devices

June 9, 2022  |  , , ,

Diabetes care has seen several innovations through the years. One of the most important developments is the insulin pump, which for many patients provides an option to the traditional needle and syringe approach to insulin injections. Insulin pumps are small, computerized devices that are about the size of a small cell phone.  Insulin pumps deliver doses of insulin, the hormone that regulates blood sugar, on a pre-programmed schedule.

High performance polymers have enabled medical device manufacturers to go beyond the functionality of ordinary plastic materials to develop innovative devices for treating diabetic patients.  Resins such as FEP and PFA fluoropolymers are chemically resistant resin with outstanding properties and are currently used in numerous healthcare applications. Physical properties of resins such as high tensile strength, dimensional stability, excellent friction and wear characteristics and the ability to replicate fine features are important advantages as parts become smaller and thinner.

In developing new and advanced insulin delivery devices, resins offer unique advantages and have expanded the possibilities for innovative design and manufacturing. Medical grade fluoropolymers, such as FEP and PFA allow for the miniaturization of device components without the constraints of glass or ordinary plastic materials. With these capabilities, designers can now expand design performance and possibilities. Fine detail replication resulting from the material’s high flow and excellent dimensional stability properties position resins as an excellent material for lightweight and compact precision delivery devices.

Device components such as insulin storage require the use of a proven polymer materials. In addition to compatibility with insulin, purity and very low levels of leaching, resins provide excellent moisture barriers and extremely low water absorption, both necessary properties for optimal long-term drug container storage. These resins are also FDA approved and are compatible with all conventional sterilization methods from gamma to steam.

In future insulin delivery systems, the use of FEP and PFA resin components for various parts of the device will continue to rise. With the advantages engineering polymers offer for design innovation and performance, resins will continue to be the material of choice for delivery applications.

At Performance Plastics, we are experts in injection molding, specializing in high performance plastics. Our proprietary tool design software, processes and equipment enable us to injection mold components having complex geometries made from challenging ultra, high-performance thermoplastic materials, and reinforced compounds. For more information on Performance Plastic’s capabilities, please contact Rich Reed, Vice President of Sales, and Marketing at 513.321.8404 or email at [email protected].

 

 

PFA plastic (Fluoropolymer) Thermoplastic Components

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Product Spotlight – EnduroSharp(R) Scraper Blade & Holder Kit

June 7, 2022  |  , , ,

EnduroSharp® has changed the way aerospace maintenance professionals remove sealants and adhesives from substrates and fasteners. EnduroSharp® tools are made from Torlon®, a high strength polymer, creating a non-metallic scraper tool that will not damage composite structures during use. The EnduroSharp® lineup consists of a variety of scraper blades, gap blades, reamers, cutter, bits, and discs for removal of adhesives on aircrafts. The product line even consists of kits containing all of the parts and sizes that you will need.

The EnduroSharp® Scraper Blade & Holder Kit is one of the most popular kits ordered. This kit includes the standard scraper blade holder, pocket scraper blade holder, and 2 scraper blades of each size. EnduroSharp® Torlon® Scraper Blade (TSB) inserts come in 5 different sizes, TSB-170, TSB-230, TSB-500, TSB-750, and TSB-1200. The blades slide and lock into the detent pin of the standard scraper blade holder handle, to easily alternate between the sizes as needed. This kit also contains the pocket scraper blade holder for use of the scraper blades in smaller areas.

The EnduroSharp® Scraper Blade & Holder kit is just one of the kits offered in the EnduroSharp® Product line. Contact Rich Reed for our Vice President of Sales and Marketing, at (513) 321-8404 or [email protected], more information on our EnduroSharp® kits and products.

 

 

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Ultem® Use in Aerospace Applications

June 1, 2022  |  , , ,

Ultem PEI Polyetherimide thermoplastic component

Ultem Polyetherimide is a material widely used in the aerospace industry.  It is often applied to aircraft components for weight reduction in place of metal parts.  Additionally, since it has a high thermal resistance rating, polymer components have the benefit of evading radar detection in military aircraft.

ULTEM is among the few resins approved for use in the aerospace sector. It outperforms comparable thermoplastics when it comes to resisting creep and does not degrade under repeated mechanical stress. It also holds up well when brought into contact with various fuels, coolants, and lubricants. Its flame-resistance ensures that it meets FAA regulations for flammability.

ULTEM has one of the highest dielectric strengths of any thermoplastic material. It works very efficiently as an electrical insulator. ULTEM also has one of the lowest rates of thermal conductivity, allowing parts machined from ULTEM to act as thermal insulators. ULTEM offers excellent long-term heat resistance with its mechanical and physical properties remaining stable at elevated temperatures.  It is also flame resistant with extremely low smoke generation. ULTEM is FDA and NSF approved for both food and medical contact resistance act and therefore is an excellent choice for aircraft galley equipment such as ovens, microwaves and hot or cold beverage dispensing systems.

Ultem is now widely used in:

  • Personal Service Units
  • Oxygen Panels
  • Ventilation Systems
  • Connectors
  • Cable Ducts
  • Latches
  • Hinges
  • Food Tray Containers
  • Door Handles
  • Interior Cladding Parts

Ultem offers exceptional balance of flame retardancy, low smoke emission and low smoke toxicity making it an excellent candidate for aerospace and aircraft applications.

At Performance Plastics, we are experts in injection molding, specializing in high performance plastics. Ultem® is an amorphous material, which can cause complications during the injection molding process. A specific set of conditions, equipment, and processing procedures must be followed to effectively injection mold Ultem®. Our proprietary tool design software, processes and equipment enable us to injection mold components having complex geometries made from challenging ultra, high-performance thermoplastic materials, and reinforced compounds.

Ultem® is one of the many high-performance polymers in which Performance Plastics specializes.  For more information on Performance Plastic’s capabilities, please contact Rich Reed, Vice President of Sales and Marketing at 513.321.8404 or email at [email protected]

 

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Performance Plastics Key Capability –  Net Shape Thermoplastic Peek Seals

May 11, 2022  |  , , , , ,

 
Mating parts providing a fluid or gas seal are critical components in most mechanical systems. We commonly think of them in valves and connector assemblies, but they are also found in pressure vessels, compressors, pumps, motors, engines, transmissions, and almost all mechanical power trains. Seals, especially those that mate to moving parts, have a demanding set of quality requirements. Each application has its own specific needs, but all seals are characterized by tight dimensional tolerances and excellent surface finish.

Our customer wanted to improve the usable life and leakage profile of a valve without absorbing any increase in component cost.  The sealing surface specifications were tightened to 0.0005 inches (12.7 µ) which was key to accomplishing the performance improvements.

The previous supplier of this component was unable to meet the more stringent sealing surface dimensional tolerances “out of the mold” necessitating a finish machining operation to bring the part into tolerance.  However, machining the sealing surface removed the resin-rich surface of the part creating micro-cracks in the surface and exposing reinforcing fibers. Both of these unavoidable consequences of machining negatively impacted component performance, useful life and cost.

Solution

Performance Plastics knew eliminating the machining operation would improve strength, reduce trapped impurities, and lower manufacturing cost.  Our engineering team focused on producing a “true net shape” part directly out of the mold.   Key to accomplishing the customers goals involved leveraging our proprietary, iterative tool design process.  It required making a 3D CT scan of preliminary molded parts measuring, in this case, approximately 1 million critical part dimensions.  This analysis identified minute distortions.  Utilizing internally developed proprietary software, PPL integrated the CT scan data with CAD/CAM software to make exacting mold modifications eliminating the out of tolerance conditions.  This process contributed to producing a best in class “out-of-mold” conforming part.

The manufacturing process also had to be optimized to produce the desired performance results.  Although the material posed molding challenges, PPL decided to direct gate the part at the top to ensure symmetry of material flow throughout the cavity, critical in achieving roundness to the sealing surface.

The results of development program surprised everyone. Performance Plastics was able to achieve  “out of mold” net shape parts with a seal surface capable of meeting sealing ranges of 100 psi to 3,000 psi, with no porosity and consistently meeting dimensional tolerances of 0.0003 inches, or 7.62 µ. Eliminating the need for subsequent finish machining dropped the leakage rate for the valve by 50%, from 1.0 scfm to 0.5 scfm.

At Performance Plastics, we are experts in injection molding, specializing in high performance plastics.  Our proprietary tool design software, processes and equipment enable us to injection mold components having complex geometries made from challenging ultra, high-performance thermoplastic materials, and reinforced compounds. For more information on Performance Plastic’s capabilities, please contact Rich Reed, Vice President of Sales and Marketing at 513.321.8404 or email at [email protected]

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Ultem® Use in Medical Applications

April 20, 2022  |  , , , ,

Ultem Polyetherimide is a material widely used in the medical industry.  It is a highly sought-after thermoplastic for its weight saving characteristics and for its use in reusable autoclave sterilization components.  Thermoplastic resins become more pliable at warmer temperatures which combined with strength characteristics, thinner walls and larger inner diameters make it a great option for medical tubing such as medical devices.

Thermoplastic polyurethanes dominate the catheter market and are used in some diagnostic and guiding designs. Extruded thermoplastic or thermoset materials are often used in cardiology or interventional radiology.   Polyamides and polyamide block copolymers dominate the percutaneous transluminal coronary angioplasty catheter market. They are the polymer of choice for balloon catheters and for stent delivery catheters.

 

Thermoplastic urethanes and polyether block amides are perhaps the most used thermoplastic elastomers in applications such as catheter tubing, balloons, wound dressings, surgical drapes, storage bags, strain reliefs and numerous other medical device applications.

Ultem is now widely used in:

  • Structural Medical Components
  • In Vitro Diagnostics
  • Medical Respiratory Devices
  • Infusion Pumps
  • Radiation Therapy Systems

Ultem has exceptional dimensional stability and machinability which makes it suitable for intricate medical devices. It can be molded with different materials like glass fibers, minerals, carbon fibers, etc. to enhance the mechanical strength of the products.

At Performance Plastics, we are experts in injection molding, specializing in high performance plastics. Ultem® is an amorphous material, which can cause complications during the injection molding process. A specific set of conditions, equipment, and processing procedures must be followed to effectively injection mold Ultem®. Our proprietary tool design software, processes and equipment enable us to injection mold components having complex geometries made from challenging ultra, high-performance thermoplastic materials, and reinforced compounds.

Ultem® is one of the many high-performance polymers in which Performance Plastics specializes.  For more information on Performance Plastic’s capabilities, please contact Rich Reed, Vice President of Sales and Marketing at 513.321.8404 or email at [email protected]

 

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Product Spotlight – EnduroSharp® C-130 Prop Hub Adhesive Removal Kit

February 23, 2022  |  , ,

EnduroSharp® has changed the way aerospace maintenance professionals remove sealants and adhesives from substrates and fasteners.

Adhesively bonded surfaces are increasingly being utilized in the manufacture of aerospace structures, with extensive use in securing removable maintenance access panels.

Traditionally, aerospace maintenance professionals removed adhesives by using unreliable items such as scrapers, files, or grinders.  This proved very inefficient because the removal was often uneven leading to failure.

The EnduroSharp® C-130 Prop Hub Adhesive Material Removal Kit comes complete with case with custom foam inserts that contains:

  • 2 each pneumatic tools,
  • 1 each Class I, Division 2 flashlight,
  • 1 each contoured sharpening fixture (requires 120 – 180 grit abrasive paper, sold separately)
  • 4 each EnduroSharp® Torlon® Scraper Blades (2 each left hand and 2 each right hand).

Performance Plastics is a injection molder of high performance, precision, tight tolerance thermoplastic resins. We specialize in geometrically complex precision parts that consist of chemically inert materials. Our expertise led to the development of our patented EnduroSharp® line of Aircraft Maintenance Tools.

For more information on the EnduroSharp® C-130 Prop Hub Adhesive Remove Kit or any of our EnduroSharp® product line, please contact Rich Reed at [email protected] or visit our website at www.performanceplastics.com

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Plastic’s Edge over Metal in Medical Device Fabrication

February 21, 2022  |  , , ,
Thermoplastic medical spinal implant component, precision thermoplastic medical check valve, non-contaminating Thermoplastic medical valve component, precision thermoplasticmedical spinal implant component, non-contaminating medical spinal implant component

High Precision, PEEK, Thermoplastic Medical Spinal Implant Component

As technology continues to advance, medical device designers are being asked to increase performance and longevity of devices while decreasing costs. One of the most effective methods of achieving both goals is through a metal-to-plastic conversion using a medically compatible resin.

Newer polymers allow for the design of multiple features into one molded component and can replace metal components or multiple smaller parts. By improving the product design and manufacturing process with the latest materials and plastic manufacturing techniques, medical device designers can improve performance of the medical device while reducing its cost.

Medical devices continue to get smaller and more complicated. The size and complexity issues present opportunities for metal-to-plastic conversion. Small tools often are used by professionals who are gloved, and resins offer the ability to apply texture and reduce weight. By using a material that provides improved wet-grip characteristics and ergonomics, designers are able to improve the overall functionality of products. The use of properly selected thermoplastic elastomers (TPEs) allows for products that withstand sterilization to be made more effectively.

Instruments that must be repeatedly cleaned and sterilized, sometimes multiple times a day such as dental instruments, can now be made from high-performance materials such as polyether imide (PEI), or polyetheretherketone (PEEK) polymers. These improvements result in better medical devices often at lower manufacturing costs.

Medical resins are ideal for bone implants. Devices made from PEEK polymer are a better match to the normal flexibility of a bone for implants. When a stainless-steel implant is used, the adhesion between the implant and bone tends to loosen over time, because the bone has a small amount of flexibility. A stainless-steel implant does not flex.

By using PEEK polymer as the implant stem, rather than traditional stainless steel, the polymer has close to the same flexibility as the bone and there is a reduced tendency for the implant to loosen over time. This compatibility between bone and polymer makes a more effective medical device — one that will allow better long-term outcomes, especially as the average life span of an implant increases in tandem with the life expectancy of the general population.

 

 

https://www.plasticstoday.com/medical/plastics-edge-over-metal-medical-device-fabrication

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Product Spotlight – EnduroSharp® Lil’ ABNIR Surface Prep Kit

February 9, 2022  |  , , ,

EnduroSharp® has changed the way aerospace maintenance professionals remove sealants and adhesives from substrates and fasteners. Introducing the Lil’ ABNIR Kit to the EnduroSharp® line of kits designed specifically for aircraft maintainers.

Adhesively bonded nutplates are increasingly being utilized in the manufacture of aerospace structures, with extensive use in securing removable maintenance access panels.

Precisely designed to work with adhesively bonded nutplates, EnduroSharp® tools are made from Torlon®, a high strength polymer, creating non-metallic tools that will not damage composite structures during use.

The EnduroSharp® Lil’ ABNIR Surface Prep Kit features a refined selection of commonly used tools with a lighter, easily transportable case. Designed as a two-layer kit, it is light and efficient tool kit for use in aircraft repair. The kit is designed for the maintainer on the go who needs to remove adhesives, sealants and coatings from aircraft structures.

The patented EnduroSharp® lineup consists of a variety of scraper blades, gap blades, reamers, cutter, bits, and discs for removal of substances on aircraft, windmill blades, boat/marine and automotive.

Performance Plastics is a custom precision injection molder of high performance, tight tolerance thermoplastic components. We specialize in geometrically complex precision parts that consist of chemically inert materials. Our expertise led to the development of our patented EnduroSharp® line of Aircraft Maintenance Tools.

For more information on the EnduroSharp®  Lil’ ABNIR Surface Prep Kit,  or any of our EnduroSharp® product line, please contact Rich Reed at [email protected] or visit our website at www.performanceplastics.com.

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Metal to Plastic Conversion for Medical Applications

February 3, 2022  |  , , , , , , ,

With the population aging and improving technology, medical device designers are being asked to increase performance and longevity of devices as well as decrease costs.  One of the most effective methods of achieving both these goals is a metal-to-plastic conversion.

Plastics can be used to replace even the most sophisticated medical device by incorporating simple design modifications.  High performance polymers offer the same strength and rigidity as some metals along with some additional advantages.

Advantages of the medical resins include:

  • Reduced Device Weight
  • Increased Design Freedom – Moldability of all Features
  • Improved Functional Aesthetics
  • Reduced Sterilization Burden
  • Improved MRI Compatibility

At Performance Plastics, we are experts in injection molding, specializing in high performance plastics.  Ultem® PEI and Peek are premium medical grade resins that are ideal for the manufacturing of medical parts and components.  Medical grade resins provide excellent mechanical properties and are highly resistant to chemicals and thermal degradation, making them highly desirable materials for plastic injection molded products within the medical industry.

At Performance Plastics, we utilize a unique combination of extensive material knowledge, mold flow analysis, a design system and process expertise to eliminate or minimize the need for secondary operations. Our expertise in process control allows us to effectively injection mold medical resins into parts with extremely tight tolerances. This gives us the ability to provide an injection molded part made from the highest strength and stiffness of any medical resin.

PEI is one of the many high performance polymers Performance Plastics specializes.  For more information on Performance Plastic’s capabilities, please contact Rich Reed, our Vice President of Sales and Marketing at 513.321.8404 or email at [email protected].

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Product Spotlight – EnduroSharp® Nutplate Abrasion Tool “The NAT”

January 27, 2022  |  , , ,

EnduroSharp® has changed the way aerospace maintenance professionals remove sealants and adhesives from substrates and fasteners.

Adhesively bonded nutplates are increasingly being utilized in the manufacture of aerospace structures, with extensive use in securing removable maintenance access panels.

Traditionally, aerospace maintenance professionals prepared nutplates using manual methods such as abrading files or grinders.  This proved very inefficient because the abrading was often uneven,  leading to adhesively bonded nutplate failure.  While rotary abrasion tools (RATs) where better, they were often bulky and expensive.

That’s why EnduroSharp® developed the Nutplate Abrasion Tool (NAT).   Precisely designed to work with adhesively bonded nutplates, the product consists of a aluminum upper and lower handle and 4 nutplate base inserts.  The product is packaged in a convenient, rugged case which is handy for transporting.

Performance Plastics is a custom precision injection molder of high performance, tight tolerance thermoplastic components. We specialize in geometrically complex precision parts that consist of chemically inert materials. Our expertise led to the development of our patented EnduroSharp® line of Aircraft Maintenance Tools.

For more information on the EnduroSharp® Nutplate Abrasion Tool,  or any of our EnduroSharp® product line, please contact Rich Reed at [email protected] or visit our website at www.performanceplastics.com.

 

Operation of the Nutplate Abrasion Tool

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