Application of a sacrificial material to microstructure 3D light curing printing
A sacrificial material and 3D technology, applied in the field of 3D printing, can solve the problems of manual inefficiency, expensive, harsh tools, etc., and achieve the effect of optimized application
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[0032] Example 1
[0033] Such as figure 1 As shown, the multi-material micro-stereolithography system includes: an optical engine 10, an electron (beam) beam splitter 20, a detergent 31, a resin delivery 30, a projection lens 40, a scraper 50, a film 60 and a container 70.
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[0034] Example 2
[0035] A printing method using sacrificial materials in microstructure 3D light curing printing includes the following steps:
[0036] A projection lens projects the image on the DLP onto the lower surface where the film is in contact with the resin, where the resin monomer undergoes a photochemical reaction to crosslink into a solid. The material of the film here can be PDMS, PFA or other transparent films with a thickness from 25 microns to 100 microns. The system has two parallel scrapers ( figure 2 ), in order to scrape the resin, the top film of the scraper is 0.5 mm deep. Two resins are attached to each scraper. When working, the squeegee that walks in front scrapes the old resin, and the squeegee that walks behind applies the resin backwards, as shown in Figure (3). In MCSL, resin switching is divided into two situations (Figure 4). One is switching resin between printing layers, and one resin is printed on the other resin. After the squeegee coats new...
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