MEDICAL | MATERIALS
and hardware. MakrolonM6011 FR, a medical PC, and Makroblend M5005 FR, a medical PC/polyes- ter blend, exhibit properties that improve chemical resistance and increased flame retardancy. The company claims that while hospital acquired infections rise and the Covid pandemic persists, the two new materials provide improved disinfect- ant resistance that respond to today’s challenging market requirements for medical device housings. The PC materials conform to UL rating UL 94 V-0 and offer enhanced impact strength, increased rigidity, as well as UV resistance and improved flowability. “The value proposition for these new durable
materials is two-fold,” says Irving Paz Chagoya, Covestro’s Healthcare Segment Manager in EMEA. “First, these products use next-generation phos- phorous based flame retardants. Second, these new polycarbonate materials comprise a variety of attributes – improved chemical resistance, impact strength, heat resistance, and so on – in a single solution.” Kraiburg TPE has launched the Thermolast H
range of TPEs designed exclusively for Asia Pacific’s healthcare applications market. The TPEs comply with Cytotoxicity ISO 10993-5, GB/T 16886.5, as well as various global food contact and relevant medical standards. Typical applications include medical and healthcare devices, resealing caps, medical and healthcare packaging and tubing. Aiming to meet the exponential growth in demand for syringes to supply the Covid vaccina- tion programme, South Korea’s Poonglim Pharmat- ech, chose medical PP from Lotte Chemical to produce its low dead space (LDS) syringes. PP is commonly used for syringes because of its resist- ance to heat and shock, clarity, and high fluidity. PP certified for medical use is widely used for prod- ucts including IV bags and bottles and syringes. The LDS syringes – distributed throughout Korea
and abroad – needed to be of high-clarity so that people administering the vaccine could accurately gauge the amount of liquid drawn from the vial. The syringes were mostly composed of Lotte Chemical’s SJ-170M medical PP grade, apart from the metal needles and PVC (or elastomer) gaskets. In addition to producing SJ-170M, Lotte also
supplied J-560M, a high-clarity product, containing Milliken’s NX8000 additive, that is suitable for sterilisation by gamma rays. J-560M has been mass-produced since 2011 and acquired USP Class VI and FDA DMF certifica- tions in 2013. While, at the start of the vaccination programme, the vaccine was largely distributed by vial, Lotte has a PP grade, J-560M1, specifically
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developed for pre-filled syringes. In the related market for therapy products,
Hexpol TPE has highlighted its collaboration with Icho Systems which works on interactive therapy and systems for people with cognitive diseases. The Icho therapy ball was developed to promote cognitive and motor skills in a playful way. Depend- ing on the application, the ball can react with coloured lights, vibrations, sound or music. The therapy ball has an injection moulded outer skin which houses the lights, speaker, sensors and electronics. Hexpol Mediprene TPE was selected due to its soft-touch haptics and good light permeability. The material also needs to be easily cleaned and Mediprene TPEs are resistant to the most common cleaning fluids used in the health- care environment.
As the Icho ball was developed for use in a medical context, a medical-grade material was required. Representative Mediprene TPE materials have been tested for cytotoxicity according to ISO 10993-5 and for biocompatibility according to ISO 10993-10 (Intracutaneous Reactivity)/-11 (Acute Systemic Toxicity) and USP Class VI. Mediprene materials are latex-free, which reduces the risk of allergic reactions.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.medpharmplasteurope.org �
www.factmr.com �
https://pvcmed.org �
www.avient.com �
www.ampacet.com �
www.arkema.com �
www.dsm.com �
www.covestro.com �
www.kraiburg-tpe.com �
www.lottechem.com �
www.hexpol.com
January/February 2022 | INJECTION WORLD 33
Above: Covestro offers a broad portfolio of materials for medical devices, such as PCR test equipment
IMAGE: STANISLAV UVAROV
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