Journal
INTERNATIONAL JOURNAL OF BIOPRINTING
Volume 8, Issue 2, Pages 159-163Publisher
WHIOCE PUBL PTE LTD
DOI: 10.18063/ijb.v8i2.521
Keywords
Selective oil sintering; Fusing agent; Food oil; Powder bed; Thermoplastic polyurethane
Funding
- HighSpeed 3D Printing Research Center of National Taiwan University of Science and Technology (NTUST) from The Featured Areas Research Center Program
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Current methods for three-dimensional (3D) printing have limitations in manufacturing biomedical products. A new high-speed 3D printing method is required to overcome the limitations of existing methods. This study proposes the use of hot oil droplets as a fusing agent, which is more energy efficient and suitable for printing on various flexible materials.
Present methods used in three-dimensional (3D) printing, such as selective laser sintering (SLS) and multijet fusion (MJF), have limited applications, especially in relation to the manufacturing of biomedical products. The speed of SLS printing is too low, and high-speed 3D printing technology with MJF uses carbon black particles as a fusing agent, which cannot be removed from the completed 3D printed products. Carbon black and high-energy lasers are not suitable for biomedical applications, especially human implants. A new high-speed 3D method is therefore required. In this study, we used hot oil droplets (175??C) as a new type of fusing agent to melt the biomaterial thermoplastic polyurethane (TPU) powder particles to define the print area. This method replaces lasers and the carbon black fusing agent in high-speed 3D printing technology and is more energy efficient. In addition, this method can be used to not only print on TPU, but also on other flexible materials.
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