3D Printing

3D printing, also known as stereoscopic printing, typically refers to stereolithography printing. It employs a principle that simulates the spatial difference perceived by human eyes, recording pixels of different angles and depths on photosensitive materials. With the combination of grating materials, it presents a three-dimensional effect or even a virtual reality on a two-dimensional surface image. Through this method, people can experience the wonderful pleasure of viewing three-dimensional images directly with their eyes, without the need for any tools. Like three-dimensional stereograms, 3D printed materials do not exhibit a three-dimensional effect when viewed on a computer screen. However, after printing, due to the special properties of the grating material, a three-dimensional effect can be seen without the need for stereoscopic glasses.
 
Early images were presented in black and white (monochrome) and later evolved into color. Currently, there is a greater emphasis on 3D printing and even virtual reality. The technology for converting flat images into three dimensions was introduced over 30 years ago but was limited by materials and unresolved key technologies. As a result, it could only be applied to small areas and could achieve no more than four layers of pseudo-3D (3D printing), such as commonly seen in animations created using image displacement techniques.
 
To display depth in thin-sheet printing or create magical animation effects, grating sheets are currently used for printing. Holographic laser film cannot reproduce true colors. Currently, the most widely used grating internationally is PET columnar grating. PET has advantages such as high transparency, moderate hardness, and environmental degradability, making it more suitable for folding boxes and providing clearer images compared to PP. To achieve the desired image accuracy, typically, a grating of 100 lines to 161 lines (the number of grating stripes per inch) is used. Packaging boxes usually use a 75-line grating.
 
Grating printing requires high standards for publishing and printing equipment, as well as considerable professional experience from factory personnel to design and print clear and aesthetically pleasing three-dimensional images or animated pictures.
 
Currently, three-dimensional packaging boxes, three-dimensional plastic sheets, and three-dimensional grating sheets made from non-toxic, harmless, recyclable, and environmentally friendly PET materials are widely used for three-dimensional anti-counterfeiting and aesthetically pleasing packaging of products such as cigarettes, alcohol, cosmetics, and medicines. They are also used in various fields such as promotional advertisements, posters, wedding photography, stationery, calendars, various cards, postcards, hanging tags, and tote bags. 3D technology can adapt to various fields such as politics, economics, military affairs, science, culture, and art, meeting the extensive needs of the global economy and society.
 
3D Stereoscopic Embossing Technology
 
3D stereoscopic embossing technology is a novel three-dimensional printing technology that creates special three-dimensional effects with a series of stripes, icons, trademarks, and other patterns. The depth of field can be controlled arbitrarily, and even super-depth images can be created.
 
Due to the structural characteristics of the three-dimensional columnar grating, no matter how advanced traditional three-dimensional printing technology and printing equipment are, it cannot overcome the phenomenon of abrupt changes in the three-dimensional image. Even with precise control of three-dimensional printing technology, there may still be 2 to 6 abrupt changes in the image. If the three-dimensional printing technology is not up to standard, the flickering points will move around the image, which is the fundamental reason why many people feel dizzy when viewing three-dimensional images.
 
Regardless of how exquisite the printed image is, if it causes discomfort to consumers due to three-dimensional printing technology, it will affect the product image to some extent. Now, with the use of 3D stereoscopic embossing technology, not only is dizziness eliminated, but the product grade is also improved, attracting consumers and serving as a certain anti-counterfeiting measure.
 
The biggest difference between 3D stereoscopic embossing technology and traditional three-dimensional printing technology lies in the absence of abrupt changes and flickering in the three-dimensional effect. The image has a three-dimensional effect from any angle, but there are no flickering points. In other words, viewing from any angle is comfortable without flickering, which cannot be achieved by traditional three-dimensional printing technology.