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Medalist medical tubing

After Gamma Irradiation and Accelerated Aging, Clear Medalist¢ç MD-500 Series Compounds Exhibit Substantially Less Color Shift, Even When Compared with Typical Gamma-Stable PVC

GELEEN, NETHERLANDS, September 27, 2011: A series of advanced medical-grade elastomers provide the first fully practical alternative to PVC for many tubing applications, it was announced today by Teknor Apex Company, which is introducing the compounds to the European market at FAKUMA 2011 (Stand B4-4107)

New Medalist¢ç MD-500 Series compounds exhibit crystal clarity and mechanical properties comparable to those of PVC; provide similar clamp resilience and resistance to kinking and necking; have a PVC-like ¡°feel¡±; and are substantially more flexible and significantly less dense. At the same time they undergo minimal color shift upon heat aging after exposure to gamma irradiation, the most severe type of sterilization. A typical compound in the series, Medalist MD-575, actually exhibits 70% less heat-aged color shift than a gamma-stabilized PVC compound of comparable hardness (see table).

¡°Medalist MD-500 Series products outperform traditional PVC-alternative technologies by mirroring many of the performance and handling characteristics of flexible PVC tubing compounds, while providing distinct advantages in some key capabilities,¡± said Stef Hordijk, senior TPE market manager for Europe. ¡°These new crystal clear elastomers add to Teknor Apex¡¯s 30-year track record in tubing compounds, one that also includes such flexible-PVC innovations as gamma-stable, non-DEHP plasticized, and even non-plasticized compounds.¡±

Medalist MD-500 elastomers have been shown to process efficiently on commercial high-speed tubing extrusion lines. Teknor Apex has developed three systems for bonding tubing made from these elastomers to traditional connectors, including a room temperature cured adhesive, a light-cured adhesive, and solvent bonding.

Medalist MD-500 Series elastomers have been tested for compliance with ISO 10993-5 cytotoxicity standards and are free of animal-derived materials, phthalates, latex, silicones, and additives not directly required for medical applications. Standard formulations include five grades, with Shore A hardness (15 sec.) ranging from 53 to 86.

The Medalist program for medical manufacturers now includes many standard high-purity elastomer compounds, along with a comprehensive body of test data and resources for designers and processors. Compounds are available with Shore A hardness from 5 to 87 and include clear, translucent, and opaque formulations. An expandable registered binder with extensive data on Medalist products is available to qualified OEMs, designers, and plastics processors in the medical device and healthcare product industries. It can be requested from the Medalist website at or by emailing Teknor Apex at


The Thermoplastic Elastomer Division of Teknor Apex Company is the most diversified manufacturer of TPEs, offering broad product families based on six generically distinct polyolefin, styrenic, and vulcanizate chemistries. Headquartered in Pawtucket, Rhode Island, U.S.A., the division compounds TPEs at eight locations in the U.S., Europe, and Asia and is an international supplier to the appliance, automotive, construction, medical-device, wire and cable, and other consumer and industrial product industries. Other plastics businesses of Teknor Apex include the Bioplastics, Nylon, Specialty Compounding, and Vinyl Divisions and Teknor Color Company. Visit

READER INQUIRY INFORMATION: Americas: Teknor Apex, 505 Central Avenue, Pawtucket, RI 02861 U.S.A. Tel:1-401-725-8000. Tel. from U.S. only: 1-866-GET-TPEs (1-866-438-8737). Fax: 1-401-728-5680. E-mail: Europe: Teknor Apex UK, Ltd., Tat Bank Road, Oldbury, West Midlands, England B69 4NH. Tel: 44-121-665-2100. Email: Asia: Teknor Apex Asia Pacific, 41 Shipyard Road, Singapore 628134. Tel: 65-6265-2544. Fax: 65-6265-1821. Email: