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Compounding Solutions (Lewiston, ME) has announced the development of a polyolefin modified with maleic anhydride or other adhesion promoters for use with multilayer, co-extruded catheter tubing. The three grades of Fuse Rx—Fuse Rx 101, 201 and 301, representing LLDPE-, EVA- and EMA-based resins, respectively—are designed to bond materials that typically will not adhere to each other during processing. All grades of Fuse Rx bond with Pebax, TPU, and HDPE resins, notes the company.

PlasticsToday Staff

September 15, 2015

1 Min Read
Tie-layer resin promotes bonding in medical polymers

Compounding Solutions (Lewiston, ME) has announced the development of a polyolefin modified with maleic anhydride or other adhesion promoters for use with multilayer, co-extruded catheter tubing. The three grades of Fuse Rx—Fuse Rx 101, 201 and 301, representing LLDPE-, EVA- and EMA-based resins, respectively—are designed to bond materials that typically will not adhere to each other during processing. All grades of Fuse Rx bond with Pebax, TPU, and HDPE resins, notes the company.

Compounding SolutionsCo-extrusion allows device designers to optimize tubing layers while saving time and material costs during manufacturing, explains Compounding Solutions, as all the polymer layers are extruded simultaneously. Co-extrusion uses multiple extruders to melt and deliver each polymer separately, along with a tie-layer polymer to bond dissimilar material together with the end purpose of eliminating separation and kinking during medical procedures.

Fuse Rx resins have passed ISO-10993-05 cytotoxicity testing and can be used in disposable Class I and Class II devices.

"Current tie-layer resins in the market have been subject to numerous changes over the last five years," says Sales and Marketing Manager Nathan Doyle, who adds that certain grades have been completely discontinued. "Coupled with the resistance of manufacturers to offer medically approved grades, this has placed much uncertainty within the co-extrusion device market. Fuse Rx is the only tie-layer resin for medical use on the market, and will be subject to no-change agreements," says Doyle.

Technical brochures for all three Fuse Rx grades can be downloaded from the Compounding Solutions website.

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