(1) Grating sheet material.
There are mainly rigid plastic lenticular films. Polystyrene raw material was processed into an lenticular mirror-like grating by injection molding. Polystyrene is colorless and transparent (transparency 88%-92%), refractive index 1.59-1.6, non-ductile, flammable. Because of this high refractive index it gives it a good sheen. The processing of transparent plastics produces a birefringent stress-optical effect. It has a tensile strength of 3.52-6.33 MPa, a bending strength of 6.12-9.84 MPa, and a thermal deformation temperature of 70-98°C. The chemical properties of polystyrene are resistant to certain mineral oils, organic acids, bases, salts, lower alcohols and aqueous solutions. Encountered by hydrocarbons, ketones, higher fatty esters, etc., eroded and softened, soluble in aromatic hydrocarbons and toluene, ethylbenzene, and styrene monomers. In some cases, the degree of erosion of polystyrene by chemical agents can be reduced by annealing, stress relieving, and other measures. Soft plastic stericles. The main use of polyvinyl chloride film base metal grating roller or grating plate made of soft plastic three-dimensional grating. Polyvinyl chloride is a polymer compound formed by the polymerization of chlorinated olefins and is difficult to burn. Although polyvinyl chloride and polyethylene are both milky white, polyvinyl chloride can be used as a colorless, transparent and glossy film, and can produce various softness films based on the plasticizer content. This material is also characterized by pulse heat sealing, high frequency heat sealing, and adhesion. The chemical properties of polyvinyl chloride have good chemical resistance, but poor thermal stability and lightfastness. Hydrogen chloride starts to decompose at 140°C, and stabilizers are required to make it. PVC content of 56% -58%, low molecular weight of soluble ketones, esters and chlorinated hydrocarbon solvents. High molecular weights are difficult to dissolve.
(2) Paper.
Paper for printing needs to be compact, smooth, smooth, and less stretchable; usually coated paper or cardboard is used.
(3) Adhesives.
The role of the adhesive is to enable the printed material and the lenticular sheet to be firmly bonded together; secondly it is also possible to protect the ink layer from discoloration at high temperatures. Three-dimensional printing should pay attention to the issue Note: Photography using single-lens or multi-lens machine requires the camera has a higher accuracy, to avoid vibration caused by errors. And accurately adjust the focal length, angle and raster data movement distance; improve the precision of plate-making color separation and copying; the 300-line network requirements are solid and the scenery images are kept at a rich level; Typographical printing must be carried out according to plan and avoid production. Paper expansion and contraction, resulting in inaccurate overprinting; grating film pitch and angle have higher accuracy, composite molding requires accurate positioning. Hard plastic and soft plastic transparency performance is better.
(4) Ink.
At present, some ink manufacturers can provide inks and additives for three-dimensional (three-dimensional) printing, and some manufacturers have developed new ink production lines. However, it should be noted that stereoscopic printing inks are not foaming inks. In fact, any visible degree of foaming affects sharpness and three-dimensional effects. For three-dimensional printing inks, the curing temperature is within the curing range of the standard plastic ink (149°C-171°C), but it must be increased to a curing temperature suitable for an ultra-thick ink layer. If the ink layer is completely cured, the three-dimensional ink will have the same good elasticity as the standard plastic ink. Although 3D printing inks are not yet common, this ink is very different from the thicker plastic ink layer that people commonly find. If it is done correctly, the three-dimensional printed image will have a distinctly fine layer and a clear edge. The printed edge will be raised vertically from the surface of the fabric and the ink wall will be smooth. Although the ink is thick and the ink plate is thick, 3D printing can still print exciting levels and screen prints.
Three-dimensional printing material introduction
November 01 06:01:11, 2024
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