Patent ID: 11964428
Assignee: NATIONAL TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Other special machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 2:
3. A bottom plate of a resin tank for three-dimensional printing, which is able to reduce a drawing force of a photocurable material in a forming process and is manufactured through the following steps:
substrate surface roughening step: disposing a composite film on the upper surface of a transparent substrate to form a non-smooth surface structure having pores;
substrate surface modification step: sequentially performing an activation treatment and a fluorination treatment on the upper surface of the composite film; and
stabilizer filling step: applying a stabilizer to the upper surface of the composite film to fill the stabilizer into the pores on the upper surface of the composite film under vacuum; wherein
in the substrate roughening step, the composite film is composed of silica and polydimethylsiloxane, which is formed on the upper surface of the transparent substrate by dipping or spraying;
in the substrate modification step, the activation treatment comprises heating and oxidizing the composite film at 150° C. or more;
in the stabilizer filling step, the stabilizer is silicone oil or perfluorocarbon, and has a viscosity in the range of 1 to 5000 cp; and
the upper surface of the bottom plate of the resin tank has both hydrophobic and oleophobic properties.