Teknor Apex

Teknor Apex (4)

Teknor Apex Company has developed two high-hardness grades in its Medalist® MD-200 series of thermoplastic vulcanizate (TPV) elastomers, extending the already broad durometer range of these resilient, high-purity compounds for replacing rubber in medical applications. Teknor Apex will introduce the compounds in the United States at MD&M West (Booth 2526) and in Europe at MedTech (Stand 1L44).
Previously ranging in Shore A durometer from an ultra-soft 15 to a semi-hard 80, the Medalist MD-200 Series now includes an 87 Shore A compound, MD-240, and a 43 Shore D grade, MD-245. The 43 Shore D durometer is roughly equivalent to a Shore A hardness of 93.
The new compounds can be extruded, injection molded, and blow molded. Suggested applications include peristaltic tubes, collection and drainage tubes, stoppers for vials, caps and plugs, seals and gaskets, device handles, ergonomic soft grips, valves, and diaphragms.
The rubber-like properties of Medalist MD-240 and MD-245 include low long-term compression set, high fatigue resistance, prolonged flex life, stability at high temperatures, abrasion resistance, and long-term sealability. [A table of properties accompanies this news release.]
“Among the benefits of the TPV technology developed by Teknor Apex for the MD-200 series are the elimination of the need for pre-drying, since all grades are non-hygroscopic, and a light natural color that permits efficient use of colorants,” said Keith Saunders, senior market manager for the Thermoplastic Elastomer Division. “What also sets us apart is that we manufacture our TPV compounds ‘from scratch,’ starting with polymers and all other basic ingredients, rather than using a masterbatch intermediary. This gives us tight control over properties and considerable freedom to formulate custom compounds that precisely meet customer requirements.”
Teknor Apex produces Medalist compounds in dedicated ISO-13485-certified facilities. All standard grades are FDA, RoHS, Coneg, and REACH compliant, are Drug Master File (DMF) listed with FDA, and are biocompatibility tested in accordance with ISO-10993-5. Teknor Apex has developed extensive data for all grades on chemical resistance and resistance to steam, gamma, and EtO sterilization. Medalist compounds are free of animal-derived materials, phthalates, latex proteins, and bisphenol A.
MEDALIST® THERMOPLASTIC MEDICAL ELASTOMERS make up a broad array of high-purity styrenic, olefinic, vulcanizate, and alloy compounds. Hardness offerings range from ultra soft gels at 25 Shore OO to hard yet ductile compounds at 85 Shore D. Teknor Apex can further broaden customer options by customizing the surface aesthetics, haptics, clarity, and color. An expandable registered binder on Medalist products provides a comprehensive body of test data and resources for designers and processors and is available to qualified professionals in the medical device and healthcare product industries.

For more information, visit: www.medalistmd.com

New polylactic acid (PLA) alloys enable manufacturers of electronic housings and other components to incorporate substantial amounts of bio-based content in their products without sacrificing the essential mechanical and thermal properties provided by engineering thermoplastics (ETPs).
Based on alloys of PLA and ETPs, Terraloy® BP 70010 and 70011 compounds provide similar or greater strength, stiffness, and heat distortion temperature in comparison with standard polycarbonate (PC), ABS, and PC/ABS blends while incorporating 40 and 36% levels of bio-based content, respectively (see accompanying table). Teknor Apex can formulate other Terraloy 70000 Series alloys on a custom basis, providing similar benefits while meeting specific customer requirements.
Potential applications for the new compounds include injection molded housings, handles, covers, and other components of electronic devices, medical equipment, and consumer products. When used in applications like medical equipment housings and bar code scanners, Terraloy 70000 Series alloys help manufacturers meet sustainability goals such as the minimum 25% biocontent specification in the BioPreferred Program of the U.S. Department of Agriculture.   
“Teknor Apex has drawn on its formulating and compounding expertise to develop ETP compounds that have high bio-based content yet deliver performance comparable to standard petroleum-based engineering resins, while lowering overall greenhouse gas emissions,” said Edwin Tam, manager of new strategic initiatives. “Indeed, both of the Terraloy alloys surpass ABS in mechanical and thermal properties and provide substantially higher levels of stiffness than PC or PC/ABS blends.”

For more information, visit: www.teknorapex.com/division/bioplastics

A new rigid vinyl compound that exhibits substantially higher flow than standard injection molding grades of RPVC provides an economical alternative to engineering thermoplastics for large products such as appliance panels, thin-wall parts, and complex structures with elaborate flow paths.
New high-flow Apex® RM 8911 compound exhibits 25 to 50% greater flow in relative spiral flow (RSF) tests as compared with standard RPVC grades, while providing a high gloss finish. The compound is UL-94 recognized for applications requiring V-0 or 5 VA flammability ratings. It is strong, durable, chemical-resistant and offers low viscosity for ease of processing. Physical properties of Apex RM 8911 compound are listed in the accompanying table.
For customers with multiple international operations, Teknor Apex can supply identical Apex RM 8911 formulations worldwide from its PVC compounding plants in the U.S., Singapore, and Suzhou, China, noted Michael J. Renzi, business development manager for the Vinyl Division of Teknor Apex.
“Our new Apex RM 8911 compound is the latest in a growing range of RPVC products from Teknor Apex,” said Renzi. “Drawing on decades of experience with vinyl technology and on our expanded manufacturing capabilities, Teknor Apex is poised to become a major player in RPVC worldwide.”

For more information, visit: www.teknorapex.com

New technology that yields heat-resistant polylactic (PLA) compounds without the typical tradeoff in impact strength will be the subject of a presentation by Teknor Apex Company at the BioPlastek 2012 Forum, which will take place March 28-30, 2012 in Arlington, VA.

Presenter Edwin Tam, manager of new strategic initiatives for the company’s Bioplastics Division, will report on the properties of a new series of Terraloy™ PLA compounds and their importance for semi-durable and durable applications requiring impact strength and heat stability, as well as for high-end disposable applications such as microwavable containers.

Compounding innovations by Teknor Apex have overcome an inverse relationship between heat distortion temperature (HDT) and Izod impact strength in PLA. As a result, the new series of compounds exhibit levels of both HDT and impact strength that are considerably higher than those available with standard PLA resin.

Mr. Tam’s presentation, “Heat and Chemical Testing of High Heat Resistance PLA Compounds,” is scheduled for the morning of March 29.

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