Processes for Producing Plastic Blanks

Compared with visualization samples and concept models, fully functional models are much more useful because they provide information about the component s full functionality and the intended production processes for the actuai part. 

There are several processes for the production of plastic blanks for samples and prototypes. In addition to the outlay involved in the manufacture of the blanks, the processes described below differ primarily in the materials used and their properties. 

Local consolidation of the material takes place, so in this way three-dimensional parts of any shape can be produced. No supporting structures are needed to produce the parts, because the unsintered powder remains in the bed and supports the part. At the end of the production process, the loose powder has to be removed from the parts produced in this way. The sintering process is pressureless, so density is less than that attainable in the processes in which the material is melted completely. Once the parts have been cleaned, the surface can be treated by sanding or by shot-blasting. 

Optics, x-y deflection reflector Sintered part Powder bed 

Powder container Chamber with Powder container 

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