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Tubing Combines Multi-Layer Polyimide and TPE

Wed, 11/10/2010 - 6:40am

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Tubing Combines Multi-Layer Polyimide and TPE

PolyMedex Discovery Group offers custom multi-layer tubing composed of thermoset polyimide and thermoplastic elastomer (TPE) laminate. Through a manufacturing process developed by PolyMedex, the high strength and tight tolerances of thermoset polyimide are combined with the wide variety of material options and configurations available in thermoplastic elastomers. Polyimide and TPE composite multi-layer tubing is ideal for demanding medical device applications that require a combination of high performance and manufacturability.

The primary value of the polyimide and TPE multi-layer tubing is the ability to utilize the benefits of thermoset polyimide, while mitigating its limitations. Thermoset polyimide has a minimum tensile strength of 20,000 psi (138 MPa) which is 30% greater than high performance thermoplastics, such as polyetheretherketone (PEEK). Due to its hard and glossy surface, polyimide is ideal for device working channels, improving passability of metallic devices such as implants. Polyimide is also resistant to the harshest chemicals and features a dielectric strength of 10,200 volts. Thermoset polyimide tubing can be produced with ID tolerances in the range of ±0.0002 to ±0.0005 in. depending on diameter. This makes the material ideal for small diameter vascular device assemblies where high strength and tolerance stackup are a critical concern.

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