With 27 years of deep cultivation in the packaging industry, Marchi has launched a premade pouch nitrogen flushing packaging machine solution for milk powder adopting the MCGD8-200 as the main unit, targeting the susceptibility of milk powder to oxidation and moisture absorption. This automatic nitrogen flushing milk powder packaging machine deeply integrates nitrogen-flush preservation with automated procedures, providing dairy and powder producers with a stable, hygienic and efficient packaging option.
Marchi Service Cases
Marchi Packaging Equipment Factory owns 27 years of experience in the packaging machinery industry, more than 5,000 cooperative customer cases and exports to over 50 countries. It is a long-term supplier to Fortune Global 500 enterprises, supporting whole factory scheme design and non-standard customization. It can package powder, granule, liquid and other materials, and has cooperated with many large food, pharmaceutical and chemical enterprises.
Food Industry: PepsiCo, Yili, Uni-President Enterprises, Tastien, By-health, Nam Soon Group, Five Grains Mill, Yan Gufang, SEAMILD, Qiandao Bee Garden, Sanjiu Group, Puratos, Guangxi Nongken Mingyang Starch, Dong'e Ejiao, Wen's Group, Amway, etc.
Pharmaceutical Industry: Tianjin Hongri, Weigao Group, Dong'e Ejiao, Xiuzheng Pharmaceutical, Yibai Pharmaceutical, Lukang Pharmaceutical, Taihang Pharmaceutical, Niscon, Jinkun, Hubei Gongtong Pharmaceutical, Fuhe Group, Infinitus, Zhejiang Medicine, Zhejiang Guobang Pharmaceutical, etc.
Veterinary Drug Industry: Longxiang Pharmaceutical, Jizhong Pharmaceutical, China Animal Husbandry Industry, Cheng Bixin, Houyi Group, Ramical, Twins Group, Yuehai Group, Haid Group, Wen's Group, Zhengbang Group, etc.
Food Additive Industry: Xinghu Technology, Xintuyang Biology, Muen Biology, Yinong, Puratos, Sanjiu Group, Ajinomoto, Meihua Group, Chenguang Biology, Rhine Biology, Jinhe Biology.
Chemical and Daily Chemical Industry: New energy, new material, mineral, chemical and other industries; Liby, P&G, Yongxin Chemical, Shengtai Chemical Technology, Guangzhou Hekang, Forster, Sanrun, Sany Group, CATL.
I. Equipment Advantages and Core Configuration
The premade pouch nitrogen flushing packaging machine is designed around fresh locking, error prevention and flexibility. The nitrogen flushing system injects nitrogen into pouches prior to heat sealing to fully displace oxygen and maintain residual oxygen content at a low level. Combined with barrier composite films such as aluminum foil film and aluminized film, it effectively slows down nutrient loss in milk powder. The equipment is equipped with multiple built-in error-proof mechanisms: no pouch, no pouch opening; no pouch opening, no feeding; no material, no sealing. In case of incomplete pouch opening, insufficient air pressure or abnormal sealing temperature (optional), the production line will automatically alarm and stop to prevent mass defective products. The pouch mouth cleaning mechanism removes residual powder via air blowing and dust suction, greatly reducing powder entrapment during sealing and improving sealing reliability.
Equipment operation relies on PLC and human-machine interface for clear visibility of process parameters. The pouch width is motor-driven, and all gripper sets can be synchronously adjusted with one button for rapid switching between stand-up pouches, zipper pouches, spouted stand-up pouches and flat pouches. Parts in contact with materials are made of 304/316 stainless steel or food-grade plastic, easy to clean and compliant with hygiene requirements for dairy and food production. This model accommodates pouches sized 100～300 mm in length and 100～200 mm in width, with a packaging speed of 25～90 pouches per minute. It can be matched with servo screw feeders or multi-head combination weighers according to characteristics of different powders including milk powder, protein powder and coffee powder, delivering stable filling accuracy.
II. Full Packaging Process: From Pouch Feeding to Palletizing
Automated packaging of a pouch of milk powder starts with pouch picking. After pouch loading, coding is completed first. For zipper pouches, the zipper is opened, followed by pouch opening assemblies stretching the pouch mouth open. The metering system performs filling and discharging according to preset weight. The cleaning station immediately removes dust from the pouch mouth. Then the nitrogen flushing pipe extends into the pouch to release nitrogen before rapid heat sealing. Finally, shaping produces neat pouch profiles.
Sealed milk powder pouches travel along the conveyor line to checkweighing and metal detection, with defective products automatically rejected. Qualified products flow to the terminal robotic palletizing unit, which neatly stacks products on pallets according to preset stacking patterns. Continuous operation is realized from single-pouch sealing to full pallet output, significantly cutting manual intervention and helping maintain a clean workshop environment.
III. Diverse Powder Application with Nationwide Service Coverage
This automatic nitrogen flushing milk powder packaging machine is not only suitable for infant formula milk powder, whole milk powder and middle-aged and elderly milk powder, but also widely applied to powdery materials such as soybean milk powder, milk tea powder, protein powder, meal replacement powder, grain powder, coffee powder, matcha powder, solid beverages, probiotic powder and dietary fiber powder. Application scenarios cover dairy factories, nutritional food filling lines, professional co-packing centers, as well as post-packaging processes for seasonings and coffee roasting.
Marchi’s service network covers more than 30 provinces and municipalities including East China (Shanghai, Nanjing, Hangzhou, etc.), South China (Guangzhou, Shenzhen, etc.), North China (Beijing, Tianjin, etc.), Central China (Wuhan, Zhengzhou, etc.), Southwest China (Chengdu, Chongqing, etc.), Northwest China (Xi’an, Lanzhou, etc.) and Northeast China (Shenyang, Harbin, etc.). It can provide installation and commissioning, operation training, regular inspection and spare parts support to guarantee production continuity.
IV. Targeting Pain Points: Common Problems and Countermeasures for Nitrogen Flushing Packaging of Milk Powder Pouches
Pain Point 1: Fluctuating residual oxygen after nitrogen flushing leads to oxidation and off-flavors in milk powder.Solution: Marchi automatic nitrogen flushing milk powder packaging machine is equipped with adjustable nitrogen flushing timing and pressure control for sufficient nitrogen displacement and stable, controllable residual oxygen content. It can be linked with residual oxygen detectors to verify processes and slow quality deterioration from the source.
Pain Point 2: Powder trapped at pouch mouth causes poor sealing, leading to air leakage or pouch bulging.Solution: An independent cleaning station is added after discharging. The pouch mouth is purged by air blowing followed by dust suction to completely remove powder before entering the heat sealing station. Combined with temperature-precise heating modules and shaping devices, seals are flat and firm, greatly reducing sealing defects caused by trapped powder.
Pain Point 3: Multi-product and multi-specification co-production with lengthy changeover time disrupting production scheduling.Solution: One-button synchronous automatic adjustment of pouch width. Parameters for zipper pouches and flat pouches can be pre-stored in formulas and directly called via the human-machine interface for rapid switching. Switching from one milk powder specification to another or other powder packaging only requires minimal adjustment time to boost overall efficiency.
Pain Point 4: Unstable powder filling accuracy triggering frequent net content complaints.Solution: Servo screw feeders or high-precision multi-head combination weighers cooperate with closed-loop feedback to fine-tune discharging volume in real time. Combined with error-proof logic such as no discharging without an open pouch and no sealing without material, the net content of each milk powder pouch complies with standards and minimizes single-pouch weight deviation.
Pain Point 5: Strict cleaning and hygiene requirements for equipment in clean workshops.Solution: All material-contact components are easy-to-dismantle food-grade materials with dead-angle-free design, equipped with dust suction interfaces and mobile material receiving trays to shorten cleaning time and help workshops maintain high-grade sanitary conditions.
From precise nitrogen flushing to rear-end palletizing, a stable and reliable nitrogen flushing milk powder packaging machine enables enterprises to control packaging losses and raise automation levels. Based on practical application data, Marchi will continuously optimize premade pouch nitrogen flushing packaging technology and full-line integration, delivering practical packaging solutions for milk powder and more powder industries.
