Читать книгу 3D Printing of Foods - C. Anandharamakrishnan - Страница 46

Based on the operation, the powder bed fusion technology has been categorized as selective laser sintering (SLS), selective laser melting (SLM), electron beam melting (EBM), and multi‐jet fusion (MJF) (Awad et al. 2020). Thermoplastics, polymers, metals, and alloy powders are common feed materials employed in the sintering process. The above‐mentioned printing technologies differ based on the type of feed materials used, based on the type and amount of light used for the transmission of energy during the phase change. For food printing applications, SLS is the most used sintering technique for the fabrication of 3D construct (Nachal et al. 2019). Food scientists of TNO used sugar and Nesquik powders for the fabrication of 3D structures with intricate internal designs (Gray 2010). A similar approach was used in CandyFab Project that successfully printed the complex 3D constructs from sugars (Figure 2.10) (CandyFab 2014). Another variant of SLS is the use of hot air instead of a laser and the technique is known as selective hot air sintering and melting (SHASAM) (Godoi et al. 2016). Both these technologies are well applied for foods that offer a greater degrees of freedom to fabricate complex structures in a short period without post‐curing step.