Global demand for industrial salt blocks is driving innovation in tablet-press technology — and Ruidapacking’s newly developed ZP-27T tablet press machine is an answer tailored to this fast-evolving market. According to Grand View Research, the global industrial salt market was valued at roughly $10 billion in 2023, with a projected compound annual growth rate of 3.5%–4.5% between 2024 and 2030.
As usage in water treatment, de-icing and other industrial processes accelerates, buyers are ordering more salt tablet press machine. Yet conventional tablet presses often produce fragile salt blocks that crack or crumble at discharge. The ZP-27T was designed from the ground up to address those weaknesses — delivering the hardness, consistency and operational efficiency end users demand.
Why Salt Blocks are Challenging to Tablet Press
Salt, by its nature, is brittle and often more prone to fracture than many pharmaceutical or nutraceutical tablets. When a compacted salt block leaves the die, its internal bonds are still stabilizing; in the first minute after ejection, motivation shock or insufficient pressure frequently causes breakage. Many standard automatic rotary tablet press machine on the market were never designed for these material characteristics: max. main pressure 100 kN, which is fine for common tablets but insufficient for industrial-scale salt blocks. In real-world production this limitation translates directly into product loss, higher waste rates, and interruptions as line operators chase down broken pieces and clean the tooling.
ZP-27T Tablet Compress Machine Core Advantages
Recognizing these challenges, our engineering team focused on three differentiators that together enable the ZP-27T to produce market-standard salt tablets reliably: bigger pressure, a precision forced-feeding system, and quick-change removable punches.
1. Bigger Pressure
A main pressure of 400 kN with a pre-pressure of 200 kN. By comparison, many off-the-shelf automatic tablet press top out at around 100 kN. That dramatic rise in main pressure ensures that the inter-particle bonds in the salt block reach a substantially greater strength at the moment of ejection — the critical window where most breakage occurs. Higher pre-compression stabilizes the powder bed before final compaction, while the robust main compression imparts sufficient density and mechanical integrity so that blocks withstand handling and downstream conveying.
We also addressed a secondary but important mechanical factor: the ejection geometry. Salt blocks are particularly vulnerable to damage at the point where they leave the die. For that reason, we engineered a shallower discharge-angle on the ZP-27T and integrated a direct conveyor interface. The reduced tilt minimizes shock at ejection, and the conveyor immediately transfers finished blocks to downstream flow wrapping machine and premade pouch packing machine for rapid packaging. Taken together, the pressure and discharge design greatly reduce first-minute fragmentation and keep production lines moving.
2. Overfill-oriented Forced Feeding for Consistency
Uniform fill depth in each die is essential to producing consistent tablet size and density. To eliminate the underfill issues that cause weak corners or variable weight, the ZP-27T uses a three-stage impeller forced-feeding system. This “three-layer” rotor ensures that each mid-die pocket receives a slight overfill; a precision scraper then trims excess material and returns it to the feeder for reuse. The result is twofold: every die gets the same mass of raw material, and waste is minimized because surplus powder is efficiently recovered instead of becoming floor-level dust that must be cleaned manually.
3. Removable Punches that Speed Mold Changes and Cut Downtime
Industrial salt blocks come in many sizes and shapes depending on application and customer preference. Traditional tooling for large salt blocks can be extremely heavy, and swapping upper and lower punches long shutdowns. The ZP-27T tackles this with an innovative removable-punch design: although a pair of punches weighs roughly 20 kg, the front portion is engineered to be detached quickly and safely. Change molds that once took significant time can now be completed in minutes, not hours. This design dramatically reduces lost production time during retooling, improves operator safety by minimizing manual lifting, and makes the ZP-27T a practical choice for facilities that must switch between product formats frequently.
Field Performance and Customer Response
Because design choices were driven by real production pain points, the ZP-27T has already attracted attention from both domestic and international buyers. Early adopters report a marked reduction in reject rates, improved downstream packaging efficiency, and faster change molds times that allow plant managers to adapt to shifting orders without prolonged downtime. These operational gains translate to a clear return on investment: lower scrap, lower labor costs associated with cleanup and rework, and higher effective capacity on a single production line.
Invitation to PharmTech & Ingredients Expo
Ruidapacking will showcase the ZP-27T at the upcoming PharmTech & Ingredients Expo in Moscow. We will be exhibiting from November 25–28, 2025 at Crocus Expo, Pavilion 2 Hall 7, Booth B7121. Prospective and existing customers are warmly invited to visit our stand, see the salt tablet press machine up close, and speak with our engineers about how the ZP-27T can be configured to meet specific salt-block production needs. Live demonstrations and technical consultations will be available throughout the show.
For inquiries or to schedule a meeting at the show, please contact Ruidapacking through our official channels. We look forward to partnering with new and long-standing customers as we help industry convert rising market demand into dependable production outcomes.
