On the production line of pharmaceutical-grade whey protein powder, the escape of a particle of powder with a particle size of less than 10μm may cause the entire batch of products to be scrapped. The single-layer sealing structure used in traditional powder packaging machines often has micron-level gaps after 4 hours of continuous operation. This technical pain point that has plagued the industry for many years has finally ushered in a fundamental solution with the application of the triple composite sealing system developed by ply-pack.
The core of this technology lies in building a dynamically balanced sealing system. The first layer of metal bellows is made of 316L stainless steel and is laser welded to form a basic sealing barrier; the second layer of food-grade silicone diaphragm has memory rebound characteristics, and can still maintain a fitting accuracy of 0.01mm when the equipment vibrates; the outermost intelligent air pressure compensation layer is the soul of technology. The built-in micro sensor can monitor the pressure changes in the cavity in real time. When a pressure difference fluctuation of more than 0.5Pa is detected, the compensation air pump is automatically started for pressure balance.
"This is equivalent to installing a breathing protective cover on the packaging machine." The head of the R&D team deliberately sprayed tracer particles on the running equipment during the demonstration at the technical release conference. The infrared imager showed that 99.3% of the particles were effectively blocked inside the sealing system, and only trace particles were exported through the preset purification and discharge channel. This hierarchical protection mechanism not only ensures airtightness, but also avoids the problem of equipment overheating caused by excessive sealing.
The measured data of new energy material companies confirms the practical value of this technology. After a lithium battery cathode material manufacturer adopted this sealing system, the packaging loss rate of lithium cobalt oxide powder dropped from 1.2‰ to 0.03‰, and a single production line alone can reduce the waste of raw materials worth 800,000 yuan per year. What is more noteworthy is its flexible adaptability. By replacing module components, the same system can meet the GMP cleanliness standards of the pharmaceutical industry and the special needs of explosion-proof powder packaging machines in the chemical industry.
