Cyclic Olefin Resin (COR) is a family of industrial photopolymer resins developed for DLP 3D printers.
polySpectra currently supports validated printers from Asiga, Stratasys (Origin), and Desktop Metal (ETEC) - the full list can be found on the requirements page.
We recommend that the printer and part-cleaning work areas are well ventilated, within a manufacturing or laboratory environment. At this time, we discourage at-home or in-office printing of COR photopolymer products.
COR photopolymers require a thermal post-cure. Review our validated and exploratory post-curing options here.
For long-term storage, we recommend cold storage. Read more about storage.
polySpectra fully supports and guarantees the printability and material performance of our validated workflows.
At the same time, we do not want to limit the creativity of our customers to explore additional workflows that may be more suited to their needs and applications. To encourage our customers and partners to innovate, we additionally share exploratory options. However, we cannot guarantee the same performance criteria, or offer in-depth troubleshooting or customer support for our exploratory options.
For most medical devices, the FDA certifies the device, not the material. COR Alpha can be used to 3D print medical-grade products.
COR Alpha, COR Black, and COR Bio feature Grade-0 cytotoxicity (10993-5), a very high working temperature (Tg >150 °C) and incredibly low moisture absorption, which make it a highly bio-inert material.
Please contact partners [at] polyspectra [dot] com to learn more about our options for medical devices and dental products.
Mostly just the color. The elongation at break of COR Black is slightly lower than COR Alpha, but both materials have the same tensile strength, thermal properties, chemical resistance and Young’s modulus.
The typical exposure time for a model layer with COR can vary depending on the specific printer and settings used. On most DLP & LCD printers that can be heated to 30-35 °C, the model layer doses of COR Alpha, COR Black, and COR Bio would be in the range of 100-300 mJ/cm2.
You can reach us at 510-390-9145. Please note that our office hours are from 9 AM to 5 PM PST, Monday through Friday.
The optimal number of burn layers can vary depending on the specific printer and settings used. However, a general guideline for printing COR at 100 micron layers would be to use 3 burn-in layers.
Cyclic Olefin Resins are incredibly easy to clean, compared to most photopolymer resins.
Validated Cleaning Solvents:
Exploratory Cleaning Solvents:
For long-term storage, we recommend cold storage - which will provide a shelf life of at least 6 months at -20 °C. Read more about storage.
Both COR Alpha and COR Bio perform exceptionally well in a wide range of applications. COR Bio features a higher elongation at break, and is engineered to be a bio-inert and biocompatible material for healthcare applications that require harsh conditions, such as steam autoclave.
The validated production post-cure is in a vacuum oven at 175 C for 2 hours. waveCure is also a method of post-curing COR parts rapidly in a microwave, in as little as 3 minutes. Read more here: https://docs.polyspectra.com/print-cor/post-curing/