Toyolac is said to be suitable for operating cylinder temperatures ranging from 210°C to 260°C. Its enhanced flowability is reported to improve molding of thin-walled part features with less tooling wear. (Toray Industries photo)

The ABS resin is said to be well-suited for production of HME and ventilator components.

NEW YORK—A transparent ABS medical resin from Toray Industries is said to offer lower molding temperatures and lower pressure requirements than other resin materials, helping to increase production capacity and turnaround time for Covid-19 related medical components.

The material, Toyolac®, can be used at operating cylinder temperatures ranging from 210°C to 260°C, Toray said in a press release. It is reported to provide smoother resin flow and decreased part flash. The enhanced flowability is said to provide increased part cavitation while providing better molding of thin-walled part features with less tooling wear and longer mold life.

Heat and moisture exchanger (HME) components molded with Toyolac resin meet multiple component assembly requirements and are easily bonded together with adhesives, providing a secure, long-lasting product, the company said in the release.

Molded HME parts that incorporate Toyolac are reported to provide robust resistance to lipids, alcohol, and cleaning agents. The material is said to create strength and stiffness across the molded components and is scratch resistant. The molded surface is also printable for tracking and identification purposes, as well as brand identification, the company said.

According to Toray, the material has a stable quality because of its “no change” production methods, formulations, and test methods and equipment. As a result, it is said to ensure long term stability for manufacturers and regulatory requirements.

Toyolac is described as a well-balanced resin and an FDA Drug Master File registered material. It is USP Class 6 tested, meets ISO 10993 for biocompatibility, and does not contain the industrial chemical bisphenol-A. The resin is also reported to be proven for medical applications in liquid-contact devices other than implants.

Toray Industries ( provides customer support to improve HME product development and manufacturing, the company said.

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