With the rapid development of refractory materials, rubber flame retardant, cable filling, environmental protection additives and other industries, the packaging demand for powder materials such as magnesium oxide, magnesium hydroxide, alumina, calcium carbonate, talc powder, kaolin, titanium dioxide, white carbon black, quartz powder, mica powder, lithopone, wollastonite powder, light calcium powder, heavy calcium powder, defoamer powder, flame retardant powder, rubber additive powder, plastic filling powder, flocculant powder, polyaluminium chloride and polyacrylamide is growing day by day. However, traditional packaging methods generally have problems such as heavy dust, low precision and high gas content, which seriously affect workshop environment and product quality. Targeting this market pain point, Guangzhou Marchi Packaging Equipment Co., Ltd. together with Hefei Marchi Packaging Equipment Co., Ltd. has launched semi-automatic 25kg bottom-filling packaging machine. With unique technical structure, it provides efficient and environmentally friendly packaging solutions for magnesium oxide processing enterprises nationwide.
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.
I. Bottom-filling Filling Technology: Solve Core Pain Points from the Source
Magnesium oxide powder faces three major technical difficulties in packaging operation. Firstly, severe dust flying. The height difference between the discharging port and bag bottom of traditional equipment can reach 700 to 800 millimeters, leading to excessive workshop dust concentration. Secondly, difficult to control packaging accuracy. Ultra-fine powder causes metering deviation due to different fluidity. Thirdly, high gas content inside powder easily leads to false full bags, affecting transportation and storage stability.
Adopting bottom-filling filling technology, Marchi semi-automatic 25kg bottom-filling packaging machine enables the discharging port to extend deep into the bag bottom for filling from the bottom. The filling workbench keeps the minimum distance with the bag bottom during descending process with small height difference, fundamentally solving the dust problem caused by large height drop.
II. Core Configuration and Technical Parameters
Model Selection: Semi-automatic 25kg bottom-filling packaging machine, specially designed for packaging specifications from 5kg to 25kg. The whole machine adopts full stainless steel structure with combined or open transparent bin design, which can be disassembled and cleaned conveniently without tools. Equipped with MP-PLC control system and touch screen man-machine interface, it supports storage and quick calling of 10 sets of different formula parameters.
Core Configuration:
- Pneumatic bag clamping device and bracket are integrated on high-precision weighing sensors to realize two-stage filling control of fast feeding and slow fine feeding.
- High-response weighing system ensures stable metering performance.
- Fully enclosed dustproof structure and optional pulse dust removal system effectively control workshop dust concentration.
- Wear-resistant and corrosion-resistant materials are adopted to adapt to corrosive powder materials such as magnesium oxide.
Key Parameters:
- Packaging Weight Range: 5 to 25 kilograms
- Packaging Precision: ±0.1% to 0.5%
- Packaging Speed: 1 to 4 bags per minute (about 60 to 240 bags per hour)
- Power Supply: 3P AC 208 to 415V 50/60Hz
- Total Machine Power: 2.87 kilowatts
- Total Machine Weight: 450 kilograms
III. Complete Packaging Process: Integrated Operation from Filling to Palletizing
A complete packaging process covers multiple links from raw material entering the storage bin to finished product palletizing and delivery:
Step 1: Feeding and Material Conveying
Materials are sent into the storage bin via vacuum feeding system or elevator for preparation before quantitative packaging. Fully closed pipelines are adopted during conveying of magnesium oxide powder, magnesium hydroxide powder and other powders to effectively control dust dispersion.
Step 2: Automatic Quantitative Filling
The equipment adopts lifting bottom-filling mode with material filled from the bag bottom. The weighing sensor collects weight data in real time, and the system automatically switches between high-speed filling and low-speed fine feeding according to preset weight threshold to guarantee packaging accuracy. For ultra-fine powder with high gas content, built-in degassing device is optional to forcibly discharge internal gas during feeding and avoid false full bags.
Step 3: Bag Clamping and Sealing
After filling is completed, the pneumatic bag clamping device releases and packaging bags fall down automatically. Automatic integrated heat sealing and stitching device is optional according to bag types, suitable for kraft paper laminated bags, woven bags, plastic bags and other common bag types.
Step 4: Conveying and Inspection
Finished bags are delivered to recheck scales through conveyor belts, and unqualified overweight or underweight products are automatically eliminated. The recheck precision is controlled within ±0.2% to ensure unified packaging specifications of each bag.
Step 5: Automatic Palletizing
Qualified packaging bags are tidied by leveling conveyors, then automatically stacked in preset pallet patterns by automatic pallet supply machines and high-precision palletizing robots. The whole palletizing system is fully controlled by PLC, capable of continuous operation with functions of fault alarm, display and automatic interlock shutdown.
Step 6: Packing and Warehousing
Palletized finished products are bundled by cross strapping machines and covered with stretch films on the top, then transported to warehouses by forklifts or directly loaded for delivery.
IV. Multi-scenario Adaptation, Serving Magnesium Oxide Processing Enterprises Nationwide
This equipment is widely used in refractory material factories, chemical filler factories, cable filling material factories, rubber flame retardant factories, plastic masterbatch factories, environmental protection additive factories, agricultural magnesium sulfate processing plants and many other industries. In the refractory material industry, magnesium oxide as the core raw material of high-temperature refractory bricks requires sealed moisture-proof packaging and accurate metering. In the rubber flame retardant field, magnesium hydroxide as environmentally friendly flame retardant additives demands metal pollution-free and dust-free packaging process. In the environmental protection industry, magnesium oxide applied in flue gas desulfurization and wastewater treatment has high requirements on packaging efficiency and cost control. Marchi provides one-to-one equipment customization services for customers nationwide to ensure precise matching between equipment and production line working conditions.
V. Customer Pain Points and Marchi Solutions
Marchi has put forward targeted solutions aiming at six common pain points in magnesium oxide powder packaging:
Pain Point 1: Severe dust flying
Solution: Adopt lifting bottom-filling filling mode to greatly reduce the height difference between discharging port and bag bottom. Pulse dust removal system is optional for the whole machine, and the whole filling process is carried out in a closed environment to keep workshop dust concentration within environmental protection standards and reduce material loss.
Pain Point 2: Unstable packaging precision
Solution: High-sensitivity weighing sensors combined with two-stage filling control achieve packaging precision of ±0.1% to 0.5%, far exceeding the conventional industry standard. The weighing system responds in real time to effectively eliminate impact errors caused by material falling.
Pain Point 3: High gas content inside powder
Solution: Built-in degassing device is optional to discharge internal gas during feeding, increase material density, reduce packaging space and eliminate false full bag phenomenon.
Pain Point 4: Inconvenient cleaning and maintenance
Solution: Full stainless steel structure and quick-detachable transparent bin without tools make material contacting parts easy to clean with dead-angle-free design, greatly shortening cleaning time.
Pain Point 5: Inconvenient adjustment of equipment parameters
Solution: PLC control system matched with touch screen man-machine interface supports storage of 10 groups of formulas and one-key parameter switching, lowering operation difficulty and improving production changeover efficiency.
Pain Point 6: High operating cost
Solution: The semi-automatic bottom-filling structure ensures flexible operation. Operators only need to finish bag sleeving work, while subsequent filling, metering and bag dropping are all completed automatically. Only 1 to 2 workers are needed to finish packaging work, which significantly cuts down labor costs.
