Covestro and Polymaker collaborate on a polycarbonate filament » 3dpbm

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Polymaker, maker of 3D printing materials, is now using a recycled polycarbonate developed by Covestro, a materials supplier, to make Polymake PC-r, a new polycarbonate filament for 3D printing made from recycled plastic. The material comes from 19-liter bottles from the Chinese water supplier Nongfu Spring, which contain polycarbonate in a relatively pure form. Covestro mixes the plastic waste with new material to create a polycarbonate base that can be extruded into filaments for use in the electronic automotive and other industries.

The filament is particularly suitable for brands that want to make their supply chain more sustainable, especially in combination with 3D printing technology for production on an industrial scale. Compared to virgin material, the filament made from recycled material has a lower CO2 footprint. The product is also more durable and meets industry-specific requirements such as the Blue Angel and the EPEAT seal.

The fact that the waste comes from a single source is an advantage. This means that no prior sorting and identification of the plastics is required. The plastic waste is very pure and can be recycled inexpensively. In addition, it is available in sufficient quantities. In China, large volume water bottles are widely used in private households and public places. These are repeatedly collected and refilled before they are finally disposed of and recycled. This is another example of how Covestro is working with partners along the value chain to help build a circular economy.Covestro and Polymaker are working together on a polycarbonate filament made from recycled plastic

The high-temperature post-consumer product has excellent thermal stability and strength. Because of its characteristics, a constant temperature chamber is required to print successfully. The machine manufacturer INTAMSYS carried out print tests with Polymaker PC-r on its FUNMAT PRO 410 printer. The printer can achieve a double jet temperature of up to 500 ° C and a platform temperature of up to 160 ° C. The chamber temperature can be up to 90 ° C, which prevents warping of printed parts and enables larger and more complex models to be printed more successfully.

Tests have shown that the Polymaker ™ PC-r material is extremely easy to work with. The test results show good values ​​for tensile strength, elastic modulus, flexural strength and flexural modulus, which were slightly higher than for standard polycarbonate.

Polymaker will be showcasing a wide range of materials for 3D printing ranging from high performance plastics to unique aesthetic solutions at TCT Asia, the 3D printing trade show in Shanghai, China, May 26-28, 2021. At the show, Covestro and its additive manufacturing business, including the newly acquired DSM business, will be exhibiting in two booths, both of which had registered separately prior to the transaction. Visitors to the trade fair are invited to visit Covestro at booth E46 and the former DSM AM at booth C48 to find out more about the company’s expanded product portfolio.

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