Study on the Optimal 3D Printing Conditions for Waterproof Thermal Manikin Generation
Vol. 58, No. 5, pp. 223-232,
Oct. 2021
10.12772/TSE.2021.58.223
PDF
Abstract
As the consumers’ interest in the functionality of clothing increases, various test
methods are being developed and standardized. Amongst them, thermal manikins are
being actively used to test the thermal insulation property of clothing. However, it is difficult
to commercialize them due to the high cost as well as the difference in the heating
mechanism from that of an actual human body. To resolve this issue, a new method for
three-dimensional (3D) printing will be explored that will consist of flexible heat pipes
inside the printed manikin. However, the preliminary experiments have confirmed that
fluid leakage occurs at the bottom. Therefore, the conditions that have maximal waterproof
performance while minimizing the printing time for different materials such as polylactic
acid (PLA) or thermoplastic polyurethane (TPU) as well as the g-code generation
conditions, for instance, layer thickness and top/bottom surface fill pattern, were explored.
The ultimate waterproof performance of the printed specimen was measured using the KS
K ISO 811 test method. As a result, the linear structure of the PLA filaments was found to
have optimal waterproof performance with the shortest 3D printing time.
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