PIGMENTS | SPECIAL EFFECTS
Right: This spinner toy was 3D printed by Herz using a metallic effect PETG filament developed with Gabriel- Chemie and Schlenk
blown bottles. We have also recently developed an ABS with marble effect for a limited range of lip stick containers for a French cosmetics manufacturer.” Gabriel-Chemie can also create other special effects in plastics, for example metallic gloss. Ultra-fine pigments can be used to form silky, homogeneous high gloss surfaces on plastic objects through mass colouration, poten- tially avoiding costly additional process stages such as metallisation. The company says its Competence Center is also available to help in development of other effects, such as thermosensitive, UV-sensitive, sparkling and cool plastics, as well as haptic effects. An example of a recent collaboration is develop-
E Below:
Gabriel-Chemie sees its Perfect Imperfection marble effects finding application in mass individu- alisation production
ment of 3D printing filaments with Schlenk Metallic Pigments and filament producer Herz. The masterbatch formulas developed by Gabriel Chemie use ultra-fine pigments from Schlenk to create a silky, homogeneous surface on the filament that is free from visible glitter particles. The compa- nies say the end product has a deep shine with an authentic metallic look. Best results are achieved with a PETG matrix polymer, which is noted for its particularly high degree of transparency and low viscosity. As a 3D printing filament, it is said to combine the positive properties of ABS and PLA. The PETG metallic filament range currently consists of five colours: Ocean Blue Metallic Gloss, Calm Red Metallic Gloss, Gunmetal Black Metallic Gloss, Brown Metallic Gloss and Fir Tree Metallic Gloss. Further colours are being developed and custom-made colours are available on request. All are claimed to provide brilliance and depth. They also offer good temperature stability, so can be processed at up to 240°C.
Paint replacement PolyOne recently introduced its OnColor Brilliant Metallic colourants, a new line of special effect masterbatches that are intended to meet the need for a premium surface finish in paint replacement applica- tions. “Our customers across multiple industries have been looking for a paint-free solution with no trade-offs, which drove us to develop
62 COMPOUNDING WORLD | March 2018
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this new masterbatch,” says Rob Bindner, Americas Vice President and General Manager, Color and Additives for PolyOne. “It is a cost-effective option for paint replacement on polymer parts and creates an exceptional metallic colour that continues through the part’s thickness. When moulded into plastic parts, manufacturers can eliminate painting and its associated
processing steps for lower
cost and longer-lasting, highly reflective surfaces.” The company adds these newest members of
PolyOne’s portfolio of OnColor FX special effects rely on coating-grade pigments. The shape and size of these pigment particles enable the metallic shades to replicate the appearance of paint and may even help customers to replace metal or plated parts with plastics. Standard shades include Brilliant Rose Gold, Brilliant Ice Blue, Brilliant Silver and Brilliant Gun Metal, but virtually any hue can be customised for specific applica- tions, PolyOne says. The new OnColor Brilliant Metallic colourants
are said to provide the desired metallic effect in almost any thermoplastic. The new colourants are claimed to provide a significantly brighter sheen on parts than was possible with the metallic-look colourants that have been developed over the past decade, PolyOne says. The company sees numerous potential applica-
tions, such as automotive components, luxury caps/closures, appliances, consumer goods, and premium cosmetics packaging where injection moulded plastic parts are painted in a secondary step. It says benefits include a reduction in manu- facturing cost of up to 30% of total part cost, along with reduced logistics due to the elimination of ordering and storing paint consumables. In addition, because the moulded-in colour infuses the entire part all the way through, scratches are not as visible compared with a painted surface, according to PolyOne.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.merckgroup.com �
www.silberline.com �
www.eckart.net �
www.geotech.nl �
www.gabriel-chemie.com �
www.schlenk.com �
www.polyone.com
www.compoundingworld.com
PHOTO: GABRIEL-CHEMIE
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