In the industrial packaging process of powdery materials, dust emission and metering deviation have always been two persistent problems plaguing production sites. Especially when the materials involve metal powder, ultra-fine chemical powder or composite powder with large density fluctuation, traditional filling methods often fail to deliver satisfactory results. Based on long-term research on powder characteristics, Marchi Packaging Machinery launches the MC-DLLB-100L automatic powder packaging machine, taking bottom-filling filling as the core technology, and provides a systematic solution balancing cleanliness and precision for quantitative packaging of powder with specifications of 5 to 25 kilograms.
I. Technical Principle: Why Bottom-filling Filling Can Solve Dust and Precision Simultaneously
In traditional top-filling equipment, materials fall from a high position to the bag bottom with a drop height of more than half a meter on average, and fine powder diffuses and flies during falling. The MC-DLLB-100L extends the filling pipe directly to the bottom of the packaging bag, and materials are filled from the bottom while the bag rises synchronously with the increase of materials. This structure minimizes the material drop height and physically inhibits dust escape. Meanwhile, the pneumatic bag clamping device and bracket are integrally installed on the weighing sensor to perceive the real-time weight change inside the bag, matched with two-speed filling logic: fast feeding in the early stage to nearly reach the target value, and slow fine supplement in the later stage to the set weight, stably controlling the packaging accuracy of 5～25 kilograms within the range of ±0.1～0.5%.
II. Model Selection and Core Configuration
This model is applicable to powder and small granular materials with good or poor fluidity, and has obvious adaptive advantages for uneven density, dust-prone and high-value-added powder. The whole machine adopts 304 stainless steel structure, and the combined or open transparent material box can be disassembled and cleaned without tools. The control system consists of PLC and touch screen, which can store up to 10 groups of filling parameters for different materials and realize one-key calling during production changeover.
Core Parameters
Equipment Model: MC-DLLB-100L Packing Weight: 5～25 kilograms Accuracy: ±0.1～0.5% Packing Speed: 1～4 bags per minute Power Supply: 3P AC 208～415V 50/60Hz Total Machine Power: 2.87 kilowatts Total Machine Weight: 450 kilograms The equipment material and control logic can be customized non-standard according to customers' material characteristics.
III. Applicable Materials and Application Scenarios
MC-DLLB-100L has been widely used in powder packaging production lines of multiple industries.
Metal Powders: Iron powder, copper powder, aluminum powder, stainless steel powder, titanium powder, zinc powder, cobalt powder, nickel powder, manganese powder, tungsten powder, chromium powder, tantalum powder, magnesium powder, zirconium powder, molybdenum powder, alloy powder and 3D printing metal powder.
Chemical and New Materials: Carbon black, PVC powder, alkali powder, silica gel powder, graphite powder, calcium powder, barite powder, gypsum powder, white carbon black, pearlescent powder, polyethylene powder, polypropylene powder, nylon powder, flame retardant powder.
Building Materials and Mining Industry: Mineral powder, stone powder, bauxite powder, quartz powder, silicon powder, coal powder, lime powder, slag powder, talcum powder, bentonite, fly ash.
Fertilizers and Additives: Urea, ammonium sulfate, ammonium chloride, ammonium nitrate, ammonium bicarbonate, superphosphate, potassium chloride, potassium sulfate, potassium nitrate, monoammonium phosphate, diammonium phosphate, compound fertilizer, flour, starch, milk powder, seasoning powder and various food additive powders.
IV. Analysis of Full-process Packaging Operation (From Feeding to Palletizing)
A complete powder packaging line is connected by multiple processes: Feeding → Mixing → Lifting → Automatic Bag Loading → Bottom-filling Filling → Heat Sealing & Stitching → Weight Inspection → Metal Detection → Palletizing.
Operators or automatic feeding systems send raw materials into the mixer. After full stirring, materials are delivered to the silo of the packaging machine by the elevator. The automatic bag loading device (or manual bag sleeving) sleeves empty bags onto the bag clamp and clamps tightly, then the filling nozzle extends into the bag bottom to start filling. The weighing sensor dynamically monitors weight changes and stops filling when the preset value is reached. The bag clamp releases, and the material bag is conveyed to the sealing station. Heat sealing or stitching is selected according to bag materials to complete sealing. Afterwards, finished bags pass through the checkweigher and metal detector in sequence to eliminate unqualified products with out-of-tolerance weight or foreign matters. Finally, the fully automatic palletizing robot neatly stacks qualified bags layer by layer on pallets according to the preset stacking pattern. The whole production line realizes continuous operation from bulk material feeding to neat palletizing.
V. Common Customer Pain Points and Targeted Solutions
Based on field investigations of a large number of powder packaging workshops, three frequent pain points are summarized with corresponding solutions.Pain Point 1: Dust overflow leads to poor workshop environment and difficulty in passing environmental protection inspections.Solution: Bottom-filling filling fundamentally reduces material drop height. Matched with fully stainless steel sealed body and optional negative pressure dust removal interface, dust is controlled near the filling area. For flammable materials such as metal powder, an inert gas protection interface can be added to further guarantee operation safety.
Pain Point 2: Packaging weight fluctuates up and down when material density changes, resulting in raw material waste or customer complaints.Solution: High-response weighing sensors cooperate with two-speed filling valves to conduct real-time closed-loop weight adjustment for each bag, unaffected by temporary changes in material bulk density. Multiple groups of formula parameters can be calibrated in advance for different batches of materials to reduce manual intervention.
Pain Point 3: Long cleaning time and easy residual materials during switching of different varieties, affecting product purity.Solution: The open transparent material box and modular pipeline design can be disassembled by hand, with smooth and dead-angle-free exposed surfaces for quick reassembly after cleaning. The formula storage function eliminates the need to re-debug parameters during production changeover, cutting the overall changeover time by about 60% compared with traditional equipment.
Marchi Packaging Machinery boasts 27 years of R&D and manufacturing experience in powder packaging equipment. The MC-DLLB-100L has helped numerous manufacturers of metal powder, chemical powder and building materials realize quality improvement and cost reduction in packaging procedures. If you are also troubled by dust or precision problems in powder packaging, welcome to request equipment operation videos and test reports tailored to your material characteristics.
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.
