Case Making Machines
High-Speed Digital Automatic Case Making Machine
Screen Printing Machines
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In the modern commercial and industrial printing landscape, visual appeal and tactile engagement have transitioned from premium options to essential brand requirements. Consumer packaging, luxury cosmetics boxes, high-end spirit labels, and collectible book covers now rely heavily on surface embellishments to capture consumer attention. Among these, high-precision spot UV coating and cold foil finishing stand out as the two most transformative technologies. Implementing these processes at an industrial scale demands highly specialized equipment, making the role of a professional screen printing machine central to modern post-press operations.
Historically, hot foil stamping was the dominant method for adding metallic effects to printed sheets. However, the process required expensive magnesium or brass dies, high temperatures, and significant setup times. As market demands shifted toward shorter run lengths, faster turnaround times, and variable design complexity, the industry embraced cold foil technology. Cold foil finishing utilizes a UV-curable adhesive printed onto the substrate, onto which the foil is laminated and cured. The foil only adheres to the areas where the adhesive is printed. Because this adhesive can be applied with the extreme precision of a screen printing press, it allows for incredibly fine lines, micro-textures, and halftone gradients that were previously impossible with hot stamping.
Similarly, spot UV coating has evolved from simple gloss highlights to complex tactile effects, including raised 3D textures, soft-touch matte contrasts, glitter coatings, and even scented varnishes. A professional screen printing machine provides the thick ink/varnish film deposition required to achieve these dramatic tactile heights, surpassing the capabilities of offset or flexographic coating units.
Global demand for premium and embellished packaging is projected to grow significantly over the next decade. Brand owners are leveraging tactile and holographic finishes to combat counterfeiting and enhance shelf presence. The integration of automatic stop cylinder screen presses into production lines has allowed packaging manufacturers to achieve throughput speeds of up to 4,000 sheets per hour with registration tolerances tighter than 0.1mm.
The core challenge of spot UV and cold foil application is registration. If the varnish or foil adhesive is misaligned with the underlying offset or digital print by even a fraction of a millimeter, the visual effect is ruined. Professional screen printing machinery solves this through advanced mechanical design, particularly the stop cylinder mechanism.
Unlike continuous rotary systems, a stop cylinder press brings the printing cylinder to a complete stop while the sheet is fed and registered against mechanical front and side lays. Once registered, the cylinder rotates in perfect synchronization with the flat screen frame and squeegee assembly. This ensures that every sheet is printed in exactly the same position, regardless of speed variations. Furthermore, modern screen printing lines incorporate optical CCD camera registration systems that scan pre-printed register marks and dynamically adjust the screen or sheet position in real-time, compensating for paper stretch and cutting variances.
The versatility of a professional screen printing machine adapted for spot UV and cold foil is demonstrated across several demanding sectors:
Guangdong Shengtu Intelligent Equipment Co., Ltd., (ST Machinery) established in 1998 and based in Dongguan, specializes in intelligent printing and packaging equipment and solutions.
As the primary drafting unit, ST Machinery participated in formulating the national industry standard JB/T 12712-2016 Printing Machinery—Book Cover Making Machine, which was officially implemented in June 2016. In 2017, the company was designated as the only "Practical Training Base for Case-Making Equipment in the Printing and Equipment Industry under the Mechanical Industry Vocational Skills Identification System" in China. Since then, it has successfully conducted multiple training sessions.
The company currently offers an extensive range of intelligent molding and efficiency-boosting equipment under the “ST” brand. With its head office in Dongguan, Shengtu operates production facilities in both Dongguan and Shanghai, and has established sales offices across North, Southwest, and East China. Internationally, it maintains a robust network of distribution partners throughout Southeast Asia, South Asia, the Middle East, Europe, and North America.
ST Machinery Factory was established, specializing in the trade of second-hand post-press printing equipment.
Dongguan Shengtu Bookbinding Machinery Co., Ltd. was established, focusing on the production of post-press equipment. In 2005, the company introduced its first fully automatic case-making machine.
Dongguan Shengtu Printing Equipment Co., Ltd. was established. With a relocation to a new facility, the company expanded its business scope to specialize in the manufacturing of fully automated packaging and printing equipment.
Shengtu fully acquired Shanghai SCT Intelligent Equipment Co., Ltd., marking a strategic expansion into the development and production of screen printing machines and related auxiliary equipment.
Guangdong Shengtu Intelligent Equipment Co., Ltd. was established, further expanding the company's business scope.
The company has relocated to its self-built industrial park — the Shengtu Intelligent Manufacturing Park — in Dongguan Dalingshan Town.
