Design and Rapid Prototyping of Packaging Liner for Rosewood Craft based on Gyroid Infill Structure

Abstract

A gyroid structure is a commonly used energy-absorbing infill structure for packaging that can be prepared by fused deposition modeling (FDM) 3D printing. In this paper, square specimens based on gyroid infill structure were designed, and the energy-absorbing performances of the square specimens were analysed by quasi-static compression testing under different printing parameters (layer height, extrusion rate, and extrusion temperature). A gourd ornament carved from rosewood was selected as the design object, and a packaging liner that highly fits the curved shape of the gourd ornament was designed through the process of reverse scanning and forward modelling. The prototype of the packaging liner was fabricated by using FDM 3D printing technology and thermoplastic polyurethane (TPU) filament. With decreased layer height, the energy absorption (E_A) value of the gyroid infill structure increased, while the specific energy absorption (S_EA) value first increased and then decreased. With the increased extrusion rate, the E_A value of the gyroid infill structure increased, and the S_EA value increased. With increased extrusion temperature, the E_A and S_EA values of the gyroid infill structure increased. The packaging liner developed based on the gyroid infill structure and the optimised printing parameters exhibited strong energy-absorbing performance.