With the continuously rising requirements on hygiene and efficiency of powder packaging in dairy products, food additives, chemical raw materials and other industries, fully automatic 25kg milk powder packaging machine, vacuum milk powder packaging machine and nitrogen-filled milk powder packaging machine have gradually become important configurations of large-scale packaging production lines. Taking models from Guangzhou Marchi Packaging Equipment Co., Ltd., this paper systematically introduces equipment advantages, application scenarios, complete packaging procedures and targeted solutions to typical pain points.
I. Equipment Advantages and Selection Basis
Marchi fully automatic 25kg powder packaging machine adopts single screw feeding mode. The screw is directly driven by servo motor, and weighing sensors and controllers feed back weight signals in real time to realize linkage control of metering and packaging. The model features the following specifications:
- Packaging Weight Range: 5～25 kilograms
- Packaging Accuracy: ≤±0.1%～0.2%
- Packaging Speed: 1.5～2 bags per minute
- Bag Size: Length 500～1000 millimeters
- Applicable Bag Material: Kraft paper laminated bag, woven bag, plastic bag and others
The whole machine consists of bag storage bin, bag taking and sorting device, bag loading manipulator, bag clamping and discharging device, bag pushing device, bag mouth guiding device, vacuum system and control system, realizing automatic serial operation from bag taking to sealing.
II. Analysis on Core Configuration
1. Feeding and Metering System
Vertical screw feeding adopts bottom-up filling mode to reduce powder flying. Servo drive guarantees stable metering speed and weight. The weighing controller displays weight data and outputs control signals in real time.
2. Bag Loading and Clamping System
The machine automatically takes bags from the storage bin, completes centering positioning, pre-opening, cutter insertion and bilateral pneumatic clamping, and finally conveys bags to the clamping and discharging station. No manual intervention is required throughout the process.
3. Vacuum and Nitrogen Filling Module
Integrated vacuum pumping and nitrogen filling functions are equipped for oxidation-sensitive materials such as milk powder. Air inside bags is exhausted first, then nitrogen with purity no less than 99% is injected to lower residual oxygen content, slowing down fat oxidation and nutrient loss. The equipment is also named vacuum milk powder packaging machine or nitrogen-filled milk powder packaging machine accordingly.
4. Sealing and Conveying System
Integrated heat sealing and stitching device finishes bag mouth sealing. Finished bags are delivered to belt conveyor lines via bag pushing and guiding movements.
III. Packable Material Types
The equipment is applicable to full cream milk powder, skimmed milk powder, whey powder, infant formula milk powder and other dairy products, and widely used for materials below:
- Food Raw Materials: Starch, premix, flour, coffee powder, protein powder, seasoning powder, cocoa powder
- Feed and Additives: Enzyme preparation, feed premix, biological fertilizer, feed powder
- Chemical and Pharmaceutical Products: Dyestuff, pesticide powder, veterinary drug powder, solid medicine, powdered additives
IV. Detailed Packaging Procedures
Complete operation flow of Marchi fully automatic 25kg powder packaging machine is as follows:
Step 1: Bag Storage and Sorting. Empty bags are stored in the bin, taken out one by one, centered and pre-opened.
Step 2: Bag Loading Manipulator Operation. The cutter inserts into bag mouths, two sides are clamped firmly, and empty bags are sleeved onto discharging ports.
Step 3: Automatic Metering and Filling. The weighing system starts operation. The screw rotates for feeding according to preset weight. Vacuum pumping or nitrogen filling can be conducted synchronously during filling.
Step 4: Bag Pushing and Mouth Guiding. Filled bags are moved to guiding positions and prepared for sealing.
Step 5: Integrated Heat Sealing and Stitching. Bag mouths are sealed through heating, pressing and stitching for woven bags to avoid air leakage and moisture absorption.
Step 6: Conveying and Inspection. Finished bags go through bag reversing conveying, inkjet marking, metal detection and dynamic weighing inspection in sequence.
Step 7: Fully Automatic Palletizing. Qualified bags are stacked neatly on pallets by palletizing robots or high-level palletizers in designated patterns, completing the whole process from powder feeding to finished product warehousing.
V. Common Pain Points and Marchi Solutions
Marchi provides targeted solutions to five major concerns in practical production.
Pain Point 1: Severe dust in packaging workshop affecting working environment
Solution: Adopt fully sealed structure equipped with dust suction ports. Bottom-up feeding greatly cuts down dust emission and improves air quality.
Pain Point 2: Fluctuant metering accuracy resulting in material loss
Solution: Servo-driven screw matched with real-time weighing feedback system keeps accuracy within ±0.1%～0.2%, reducing waste and long-term operating cost.
Pain Point 3: Air leakage or high residual oxygen shortening milk powder shelf life
Solution: Built-in vacuum and nitrogen filling functions control residual oxygen content below 2%, effectively extending shelf life and ensuring food safety.
Pain Point 4: Low manual bag loading efficiency for 25kg large-specification packages
Solution: Integrated automatic bag storage, loading, clamping, sealing and palletizing replaces 3 to 5 workers and boosts packaging efficiency.
Pain Point 5: Slow after-sales response upon equipment failure
Solution: Each device is assigned a lifelong exclusive file. Electronic and paper copies of drawings, programs and manuals are well preserved. Common spare parts are in stock, enabling rapid on-site maintenance.
VI. Introduction to Marchi Packaging Equipment Company
Rooted in the packaging machinery industry for 27 years, Guangzhou Marchi Packaging Equipment is a high-tech enterprise integrating scientific research, design, production, sales, installation and after-sales service. It owns seven business divisions covering conveying equipment, batching equipment, packaging equipment, filling equipment, cartoning equipment, palletizing equipment and whole factory design. It has delivered integrated packaging solutions to numerous enterprises including PepsiCo and Liby. Customized services ranging from single machine to full production line are available to meet powder packaging demands of milk powder, food, chemical and feed industries.
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, YumChina, Little Sheep, 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.
