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Home > News > Medical

Teknor Apex develops a new series of medical-grade TPEs for wearable devices

Source:Adsale Plastics Network Date :2020-01-09 Editor :(SC)

Teknor Apex Company has developed a new series of medical-grade thermoplastic elastomer (TPE) compounds for overmolding applications to produce wearable devices.


The TPE compounds, which are sold under the brand name Medalist, offer strong adhesion to medical-grade polycarbonate (PC) and PC alloys and include formulations with enhanced resistance to chemicals encountered in wearable applications.

Wearable DeviceW.jpg

The TPE compounds include formulations with enhanced resistance to chemicals encountered in wearable applications.


Medalist MD-34900 series compounds, available in 50, 60, and 70 Shore A grades, are for general medical overmolding applications, while the MD-36975 grade is a 75 Shore A TPE designed specifically for overmolding in wearable devices, with resistance to the lotions and disinfectants that are typically encountered.


As medical-grade TPEs, they are subject to strict formulation controls, are made only with FDA-listed food-grade ingredients, are ISO 10993-5 compliant for biocompatibility, and are compliant with CONEG, RoHS, and California Proposition 65 requirements. Teknor Apex produces these compounds in multiple ISO-13485-certified facilities, ensuring security of supply.


Teknor Apex recommends the new Medalist compounds for wearable devices, where TPEs contribute comfort; ‘soft-touch’ or cosmetic grips for medical device housings, handheld devices, and instruments; and seals and gaskets.  


In a joint project with Covestro LLC, these materials were over-molded onto various medical grades of Makrolon PC as well as Bayblend and Makroblend PC alloys, using both insert and multi-shot molding. 


The project included tests to evaluate adhesion, processability, and chemical resistance. Peel strength data showed the Medalist compounds exhibitinggood adhesion to Covestro’s engineering thermoplastics. 


“Medalist TPEs are excellent alternatives to liquid silicones used in over-molding because they do not require the use of a primer, have a shorter cycle time (avoiding the lengthy curing process), and can be processed on conventional injection molding equipment,” said Ross van Royen, Senior Market Manager for Teknor Apex. 


The new compounds for the medical device industry are an outgrowth of work carried on by Teknor Apex to develop over-molding TPE formulations for consumer products.


“We’ve made substantial investments in adhesion-modified technologies for TPEs, increasing our understanding of adhesion, developing more cost-effective formulations, and improving the bonding capabilities of these products in complex part designs,” said Mr. van Royen.


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Source:Adsale Plastics Network Date :2020-01-09 Editor :(SC)

Teknor Apex Company has developed a new series of medical-grade thermoplastic elastomer (TPE) compounds for overmolding applications to produce wearable devices.


The TPE compounds, which are sold under the brand name Medalist, offer strong adhesion to medical-grade polycarbonate (PC) and PC alloys and include formulations with enhanced resistance to chemicals encountered in wearable applications.

Wearable DeviceW.jpg

The TPE compounds include formulations with enhanced resistance to chemicals encountered in wearable applications.


Medalist MD-34900 series compounds, available in 50, 60, and 70 Shore A grades, are for general medical overmolding applications, while the MD-36975 grade is a 75 Shore A TPE designed specifically for overmolding in wearable devices, with resistance to the lotions and disinfectants that are typically encountered.


As medical-grade TPEs, they are subject to strict formulation controls, are made only with FDA-listed food-grade ingredients, are ISO 10993-5 compliant for biocompatibility, and are compliant with CONEG, RoHS, and California Proposition 65 requirements. Teknor Apex produces these compounds in multiple ISO-13485-certified facilities, ensuring security of supply.


Teknor Apex recommends the new Medalist compounds for wearable devices, where TPEs contribute comfort; ‘soft-touch’ or cosmetic grips for medical device housings, handheld devices, and instruments; and seals and gaskets.  


In a joint project with Covestro LLC, these materials were over-molded onto various medical grades of Makrolon PC as well as Bayblend and Makroblend PC alloys, using both insert and multi-shot molding. 


The project included tests to evaluate adhesion, processability, and chemical resistance. Peel strength data showed the Medalist compounds exhibitinggood adhesion to Covestro’s engineering thermoplastics. 


“Medalist TPEs are excellent alternatives to liquid silicones used in over-molding because they do not require the use of a primer, have a shorter cycle time (avoiding the lengthy curing process), and can be processed on conventional injection molding equipment,” said Ross van Royen, Senior Market Manager for Teknor Apex. 


The new compounds for the medical device industry are an outgrowth of work carried on by Teknor Apex to develop over-molding TPE formulations for consumer products.


“We’ve made substantial investments in adhesion-modified technologies for TPEs, increasing our understanding of adhesion, developing more cost-effective formulations, and improving the bonding capabilities of these products in complex part designs,” said Mr. van Royen.


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Teknor Apex develops a new series of medical-grade TPEs for wearable devices

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