Fully automatic milk powder packaging machine - milk powder nitrogen-flushed packaging machine, suitable for fully automated packaging of milk powder raw materials on the entire line

As food supply chain management becomes increasingly standardized, milk powder raw material manufacturers are raising their requirements for standardization, traceability, and food safety control in the packaging process. In the 25kg large-bag milk powder packaging process, many raw material manufacturers frequently encounter problems such as incompatible production line modules and difficulty in linking independently operating equipment; excessive dust during powder filling, making it difficult to maintain workshop cleanliness in line with food regulations; large differences in the flowability of different milk powder materials, leading to unstable metering accuracy; inadequate control of the nitrogen flushing process, resulting in oxidation and caking during storage; and reliance on manual inspection and palletizing after packaging, which leads to high error rates and easy bag breakage during warehousing and transfer. To address these industry pain points—difficulty in whole-line linkage and high quality control risks for food factories—Guangzhou Maichi Packaging Equipment Factory has launched a modular fully automatic milk powder nitrogen-flushed packaging line solution, building a closed-loop production system covering front-end conveying, automatic packaging, weight re-checking, metal detection, and automatic palletizing.

The main model, the MCZD-25F fully automatic 25kg milk powder packaging machine, adopts a single-screw servo feeding structure, with a servo motor directly driving the screw feeder, combined with a high-precision weighing sensor control system. The packaging accuracy is controlled at ≤±0.1–0.2%, the packaging speed is stable at 1.5–2 bags/min, and the filling range is flexibly adjustable from 5 to 25kg. The unit integrates a bag magazine, bag picking and aligning mechanism, bag-loading robot arm, bag clamping and discharging, bag mouth guiding, and a vacuum nitrogen flushing control system, automatically completing bag picking, centering and positioning, bag opening, filling, nitrogen replacement, and heat sealing and sewing, with no manual intervention throughout the process. The equipment is compatible with various bag types such as kraft paper laminated bags, woven bags, and plastic bags, with bag lengths adapted to 500–1000mm, and is suitable for mainstream 25kg specifications on the market: 25kg whole milk fermented milk powder, 25kg high-protein whey powder, 25kg infant base powder, 25kg modified compound milk powder, and 25kg specialty nutritional milk powder. Applicable materials include whole milk powder, skimmed milk powder, whey protein powder, demineralized whey powder, formula base powder, food-grade compound milk powder, and other powder raw materials.

The operating logic of the entire production line is clear: the front-end conveying and mixing equipment stably feeds materials to the packaging main machine, and the milk powder nitrogen-flushed packaging process isolates oxygen; the packaged finished products are conveyed to the weight sorting station, where products with out-of-tolerance weight are automatically rejected; then metal impurities are screened out through the metal detection process, safeguarding the bottom line of food safety; qualified products are conveyed to the palletizing station for automatic stacking, facilitating warehousing and outbound delivery. This automated production line is suitable for milk powder raw material deep-processing enterprises, dietary nutrition raw material factories, food ingredient manufacturing enterprises, dairy raw material repackaging enterprises, and meal replacement raw material production enterprises.

Guangzhou Maichi Packaging Equipment Factory has been deeply engaged in the packaging machinery industry for 27 years and is a long-term supplier to Fortune 500 enterprises. It has its own production plant and possesses one-stop capabilities in independent R&D, manufacturing, production, sales, and after-sales service. Familiar with the characteristics of milk powder powders, the company has optimized the nitrogen flushing structure and feeding logic for the characteristics of milk powder—easy dusting, easy oxidation, and variable flowability. The equipment features a modular design, allowing flexible adjustment of production line layout according to the workshop site layout, helping dairy raw material enterprises reduce quality control risks and manual input, and achieve stable and continuous automated packaging production.