3D PRINTING | INNOVATION
Setting up the injection moulding machine is simple. A runner plate is placed on the fixed platen and heated to 50°C. A mother tool with ejector plate is mounted on the movable platen. An aluminium frame with a pocket that fits any Addifab mould is fitted onto the ejector plate, and the printed mould is fitted into the pocket, the part can then be moulded. Once moulded, the mould containing the part is placed in a bath containing an alkaline solution to dissolve the mould. Materials distributor and logistics provider 3D
at Nexeo Plastics is another company offering new options for mould makers. A recent project involved less unconventional moulds than those envisaged by Addifab – produced using AM, but designed to last more than a single cycle. “3D at Nexeo Plastics recognised an opportunity to use one of its suppliers’ filaments to revolutionise the process of injection moulding, with the goal of
reducing overall costs and speeding up the prototype phase,” says Thomas Collet, Director Marketing, Business Unit Customised Polymer Materials, at com- pound developer and producer Lehmann&Voss (LehVoss). Collet says that, together with outside partners,
LehVoss optimised a mould design to ensure the correct functionality in the injection
process while considering the specific requirements for it to be 3D printed. Its 3D
experts adapted an old metal mould to be used as a holder for the printed part, and also modified the extraction system to fulfil the part specification. Luvocom 3F Filament PET CF 9780 was used to print 3D moulds by FFF (fused filament fabrication) technology. “The unique properties of the Luvo- com 3F Filament PET CF 9780 enabled us to create a complex cavity and still provide excellent stability for the tool to withstand the pressures of injection moulding,” says Collet.
From left to right: the
printed mould, the mould containing the injected part, and the part after the mould has been dissolved, made using Addifab’s Freeform Injection Molding process
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