Topas Advanced Polymers has expanded its line of Topas 5013 cyclic olefin copolymer (COC) resins for injection moulding of high-performance components for the optical, diagnostic, and microfluidic markets. The new grade, Topas 5013L-10, features an internal mould release designed for easy processing.
“The boost in processability from the internal mould release has made this new grade the go-to choice for components with high aspect ratios, precision details, and other moulding challenges,” said Timothy Kneale, President of Topas Advanced Polymers, Inc.
The new grade has been designed for clarity, high flow, and a heat deflection temperature of 127°C. Topas says it features a high level of flowability for a transparent resin, without loss of material strength or optical characteristics. The material’s low melt viscosity permits the production of ultrathin light guide plates, as may be used for displays in tablet and smartphone devices.
Topas 5013L-10 also delivers low birefringence and high moulding accuracy (submicron detail replication) for optical parts such as lenses, optical storage media, as well as for medical and diagnostic applications, claims Topas. The heat resistance and purity are said to be suitable for DNA analysis, including typical 95°C PCR protocols.
The internal mould release can permit a reduction in the use of spool runners, along with easier demoulding. Other features include light transmission of 91%, low water absorption resulting in reduced warpage, and reduced discolouration properties over time.
Topas 5013L-10 resin is available globally and has found commercial use in microfluidics, diagnostics, and optics, including automotive and mobile device displays.