Additive Manufacturing Technologies: An Overview about 3D Printing Methods and Future Prospects

Table 6

Jet prototyping (JP).

Three Dimensional Printing – Glue Injection
	The model is built on a bed full of powdered model material. A nozzle head injects an agglutinate onto the surface of the bed and fuses the powder in accordance with the geometry of the 2D cross-section of the model. The powder is added and levelled using a roller. Once the process has been completed, the excess powder is sucked off the bed leaving the model clean. The model then has to be cured (hardened) using different coatings [17].
	Minimum layer thickness is between 0.013 and 0.076 mm.
	The material used can be ceramic, metal and polymers. The properties of the material zp150-Z-Bond are: tensile modulus: - Mpa; tensile strength: 14 Mpa; elongation at rupture: 0.2 %; flexural modulus: 7.2 Mpa; bending strength: 31 Mpa; deformation under load temperature: 112°C.
	Advantages and disadvantages; Pieces of color are obtained, with great aesthetic quality. No supports are needed.; It is not easy to obtain functional pieces due to the fragility of the pieces obtained. The cost of the equipment is medium-high.