Against the backdrop of continuously growing consumption of powdered food such as soymilk powder, protein powder and non-dairy creamer, quality and efficiency in the packaging stage have become core concerns for manufacturers. As an established original manufacturer with 27 years of experience in packaging machinery, Guangzhou Marchi Packaging Equipment Co., Ltd. and Hefei Marchi Packaging Equipment Co., Ltd. jointly launch the MCZD-25F fully automatic powder heavy bag packaging unit. It provides a full-process automatic packaging solution ranging from automatic bag picking to finished product palletizing for various powdery materials, including soymilk powder, food additives, chemical raw materials, veterinary powder, feed additives, seasoning powder, solid beverages, glucose, rice flour, dyes, flavors and fragrances, protein powder, premixes, calcium carbonate and titanium dioxide.
I. Core Equipment Advantages
Fully considering the particularities of powder packaging in design and manufacturing, the MCZD-25F fully automatic heavy bag packaging machine for soymilk powder boasts the following core advantages:Unmanned full-process operation.The equipment realizes integrated automatic operations including automatic metering, automatic bag loading, automatic filling and automatic heat sealing and stitching without manual intervention throughout the process. It automatically picks bags from the bag storage bin, completes bag centering and positioning via the bag picking and sorting device, followed by bag loading, filling and sealing. All operations are automatically completed by the machine, effectively saving manpower and reducing long-term operating costs.
High-precision metering system.The weigher adopts vertical single-screw feeding structure. The screw is directly driven by a servo motor to guarantee metering speed and precision. During operation, the screw rotates for feeding according to control signals. Weighing sensors and weighing controllers collaboratively process weighing signals and output weight data and control signals. Packaging accuracy can reach ≤±0.1～0.2%, effectively avoiding material waste.
Stable and reliable bag loading mechanism.The unit consists of a bag storage bin, bag picking and sorting device, bag loading manipulator, bag clamping and discharging device, bag pushing device, bag mouth guiding device, vacuum system and control system. The equipment automatically picks bags from the bag storage bin and sequentially completes bag centering positioning, forward conveying, bag mouth positioning and pre-opening. The cutter of the bag loading manipulator accurately inserts into the bag mouth, and pneumatic grippers on both sides clamp the bag mouth to finish bag loading. The whole process operates stably and reliably.
Nitrogen flush freshness-locking function (optional).The equipment can integrate dual functions of vacuum pumping and nitrogen flushing. After filling, air inside the bag is extracted first, followed by injection of high-purity nitrogen. Nitrogen-flushed packaging can effectively displace oxygen inside the package, slow down the oxidation of fat in soymilk powder, and retain the nutrients, taste and color of products. The measured residual oxygen content can be controlled at a low level to effectively extend product shelf life.
Wide adaptability to materials and bag types.The equipment is applicable not only to dairy products including soymilk powder, whole milk powder, skim milk powder, infant milk powder, adult milk powder, goat milk powder and cow milk powder, but also to various powdery materials such as protein powder, whey powder, non-dairy creamer, maltodextrin, condensed milk powder, cream powder, soybean protein powder, pea protein powder, collagen powder, glucose powder, corn starch, cocoa powder, grain powder, oat powder, almond powder, coconut milk powder, rice flour, peanut powder and red date powder. It is compatible with various materials including laminated kraft paper bags, woven bags and plastic bags, with applicable bag lengths ranging from 500 to 1000mm, meeting packaging requirements for products of different specifications.
II. Application Scenarios
The MCZD-25F fully automatic heavy bag packaging machine for soymilk powder is widely applied to the back-end packaging process of various powdered food, dairy and chemical enterprises. In the packaging workshop of soymilk powder manufacturers, the machine can complete heavy bag packaging ranging from 5kg to 25kg, adapting to differentiated specification demands from different market channels. It can deliver stable and reliable packaging support for infant formula soymilk powder production lines, adult nutritional soymilk powder production lines, as well as packaging lines for various functional protein powder and non-dairy creamer. As core equipment in the complete packaging and palletizing production lines of large food enterprises, it undertakes critical packaging procedures.
In the food additive industry, the equipment can be used for automatic packaging of glucose powder, flavors and fragrances, premixes and other materials. In the chemical industry, it adapts to powdery materials such as calcium carbonate and titanium dioxide. The machine can be seamlessly connected with post-processing equipment including checkweighers and metal detectors to form a complete packaging production line.
III. Complete Packaging Process
The operation workflow of the MCZD-25F fully automatic heavy bag packaging machine for soymilk powder covers the full chain from bag picking to finished product warehousing:Automatic bag picking and sorting.The equipment automatically takes packaging bags from the bag storage bin, and completes bag centering and positioning through the bag picking and sorting device.
Bag mouth pretreatment.Bags are conveyed forward to the bag mouth positioning station for pre-opening, preparing for subsequent bag loading.
Manipulator bag loading.The cutter of the bag loading manipulator accurately inserts into the bag mouth. Meanwhile, pneumatic grippers on both sides clamp the bag mouth to realize fast and stable bag loading.
Precision filling.After the bag clamping and discharging device is in position, the vertical screw rotates for feeding according to control signals, and the weighing system monitors weight in real time to ensure consistent metering of each bag.
Vacuum pumping and nitrogen flushing (optional).For oxidation-prone materials such as soymilk powder, oxygen inside bags can be evacuated after filling before injecting high-purity nitrogen to effectively slow down oxidative deterioration of products.
Heat sealing.The bag pushing device cooperates with the bag mouth guiding device to complete heat sealing and stitching, delivering attractive and firm sealing.
Post-conveying and palletizing.Finished products are output via conveyor belts, which can be connected to checkweighers and metal detectors for online inspection. Finally, finished goods are neatly stacked automatically by palletizers to facilitate warehousing and transportation. The whole production line realizes fully automatic operations from bulk materials to palletized finished products.
IV. Solutions to Customer Pain Points
During actual packaging and production of powdery materials such as soymilk powder, enterprises often encounter the following pain points. Marchi MCZD-25F provides targeted solutions:Pain Point 1: Poor packaging tightness leads to moisture absorption and caking of products.Soymilk powder features strong hygroscopicity. Once dampened, it easily agglomerates and deteriorates, seriously affecting product quality and consumer experience.Solution: Marchi MCZD-25F adopts dual processes of vacuum pumping and nitrogen flushing to effectively discharge oxygen and moisture inside bags with high nitrogen displacement rate. Combined with high-strength heat sealing and stitching technology, it ensures long-term good sealing of each bag and significantly extends shelf life.
Pain Point 2: Powder materials are prone to oxidation and deterioration with short shelf life.Nutrients such as unsaturated fatty acids in soymilk powder are extremely sensitive to oxygen.Solution: The equipment integrates a high-precision gas displacement system. By precisely controlling vacuum pumping and nitrogen flushing duration, it guarantees nitrogen purity and displacement efficiency, isolates oxygen at the source and effectively extends product shelf life.
Pain Point 3: Low efficiency and high error rate of manual bag loading.Traditional manual bag loading features low speed, high labor intensity, and frequent problems including inaccurate positioning and failed bag loading.Solution: MCZD-25F adopts fully automatic bag loading manipulators to replace manual work. The whole process of bag picking, positioning and bag loading is automated with stable speed and high repeat accuracy, greatly reducing human errors.
Pain Point 4: Inaccurate metering causes raw material waste and inconsistent batch weights.Some powdery materials are prone to inaccurate metering due to bulk density fluctuation and fluidity differences.Solution: Marchi equipment adopts servo motor direct-drive single-screw feeding mechanism, together with dynamic feedback adjustment from high-precision weighing sensors and weighing controllers, ensuring the weight deviation of each pack is controlled within a minimal range.
Pain Point 5: Frequent switching of packaging materials leads to time-consuming machine adjustment.Manufacturers often need to switch between different bag types and materials according to order requirements.Solution: MCZD-25F is equipped with a rapid adjustment mechanism, which can flexibly adapt to various bag types including laminated kraft paper bags, woven bags and plastic bags, reducing production changeover downtime.
Key Equipment Parameters
Equipment Model: MCZD-25F Feeding Mode: Single screw feeding Packing Weight: 5～25 kilograms Packing Accuracy: ≤±0.1～0.2% Packing Speed: 1.5～2 bags per minute Bag Size: Length 500～1000 millimeters Bag Materials: laminated kraft paper bags, woven bags, plastic bags, etc.
Drawing on 27 years of experience in packaging machinery, Guangzhou Marchi has served numerous manufacturers worldwide, providing full-cycle services covering scheme design, equipment selection, installation & commissioning and after-sales maintenance. Whether for new packaging production lines or upgrading of existing lines, Marchi can deliver customized design and manufacturing solutions in accordance with customers’ diverse production demands, helping manufacturers realize intelligent upgrading of packaging procedures.
