open mouth bag filling machine

The open mouth bag filling machine is a professional quantitative weighing and packaging equipment tailored for powdery and granular materials in dry mortar production lines. It is specially designed for open-mouth woven bags and paper bags, supporting automatic feeding, precise weighing, quantitative filling and bag conveying. Different from traditional valve bag packaging equipment, this machine features strong material adaptability and simple bag matching process, suitable for packaging ordinary dry mortar, putty powder, refractory powder, sand aggregate and other building materials. Adopting advanced PLC weighing control system and closed filling structure, it effectively solves the problems of inaccurate manual weighing, serious dust pollution, low packaging efficiency and large material waste in traditional packaging processes. It can be seamlessly connected with dry mortar mixing systems, conveyor belts and sewing machines to form a complete automatic packaging process, which is essential supporting equipment for standardized dry mortar factory production.

• High-Precision Quantitative Filling: Equipped with high-precision imported weighing sensors and intelligent microcomputer control system. It realizes dual-speed fast and slow feeding control, with stable weighing accuracy and tiny error. It effectively avoids material shortage or over-filling, ensuring consistent net weight of each finished mortar bag and improving product qualification rate.
• Dust-Free Closed Packaging: Adopts fully closed filling and negative pressure dust collection design. It completely suppresses dust overflow during powder filling, greatly improving workshop operating environment and reducing raw material loss. The dust-proof structure fully meets international environmental protection standards for building material production.
• Wide Material & Bag Adaptability: Compatible with various dry mortar products, including ordinary masonry mortar, plastering mortar, anti-crack mortar, thermal insulation mortar, putty powder and granular sand materials. It supports 10–50kg open-mouth bags of different specifications, with adjustable bag clamping structure for flexible switching of packaging specifications.
• Stable Operation & Durable Structure: The material contact parts are made of high-quality stainless steel SUS304, which is anti-corrosion, wear-resistant and not easy to stick powder. The mechanical transmission structure is simplified and optimized, with low failure rate, stable long-term continuous operation and long service life, adapting to high-intensity industrial production.
• High Efficiency & Labor Saving: Realizes automatic weighing and filling, matching with automatic conveying and sewing equipment to form assembly line operation. The packaging speed is fast and stable, effectively reducing manual bagging intensity and labor cost, and greatly improving factory packaging efficiency.
• Simple Operation & Easy Maintenance: Adopts intelligent touch screen one-key operation, with simple parameter setting and intuitive data display. The equipment structure is reasonable with detachable protective plates, convenient for daily cleaning, inspection and maintenance, reducing later operation and maintenance costs.

• Pre-Operation Inspection: Before starting the machine, check the tightness of mechanical parts, the sensitivity of weighing sensors and the normal operation of dust removal system. Confirm no foreign matters inside the feeding pipeline and filling port, and ensure the bag clamping device operates flexibly to avoid jamming and abnormal filling.
• Standard Bag Installation: Use qualified open-mouth woven bags or paper bags matching the equipment specifications. Fix the bag mouth firmly with the bag clamping device to prevent bag falling and material leakage during filling, which will affect packaging accuracy and workshop environment.
• Reasonable Parameter Setting: Set accurate packaging weight, feeding speed and delay parameters according to different material density and fluidity. Non-professional personnel are prohibited from modifying system parameters arbitrarily to avoid weighing deviation and unqualified products.
• Strict Material Feeding Management: Ensure uniform and stable material supply, and strictly block oversized impurities and hard sundries from entering the equipment. Prevent pipeline blockage, screw abrasion and equipment failure caused by foreign matters.
• Safe Operation Specifications: It is forbidden to stretch hands or tools into the filling port and operating area during equipment operation. Stop the machine completely and cut off the power supply before cleaning, maintenance and fault handling to ensure operation safety.
• Daily Maintenance & Calibration: Clean residual powder and dust inside the equipment after daily shutdown. Regularly calibrate the weighing system to ensure long-term accurate metering. Lubricate transmission parts regularly and replace worn accessories in time to stabilize equipment performance.

• Dry Mortar Production Industry: Special packaging equipment for masonry mortar, plastering mortar, bonding mortar, waterproof mortar, thermal insulation mortar and anti-crack mortar in dry mortar production lines.
• Building Powder Material Factory: Suitable for quantitative packaging of wall putty powder, ceramic tile adhesive powder, fly ash, lime powder and other building powder materials.
• Sand & Aggregate Processing Industry: Used for open-mouth bag packaging of dried quartz sand, manufactured sand and river sand granular materials, supporting finished material sales and transportation.
• Refractory & New Material Industry: Applicable for packaging of refractory powder, thermal insulation powder and inorganic building powder materials, realizing dust-free and accurate packaging.
• Medium & Small Building Material Enterprises: Ideal packaging equipment for small and medium-sized mortar factories with diverse product types and flexible specification switching demands, featuring low investment and high cost performance.

• Q1: What is the difference between open mouth bag filling machine and valve bag packing machine?
  A1: The open mouth bag machine is suitable for fully open woven bags and paper bags with wider material adaptability, more flexible specification switching and lower bag cost. It is more suitable for multi-variety mortar and granular materials packaging, while valve bag machines are only for special valve bags.
• Q2: What is the weighing accuracy of the equipment?
  A2: The equipment adopts high-precision sensor and dual-speed feeding technology, with stable weighing accuracy within ±0.2%~±0.3%, which can meet the national and international quantitative packaging standard of dry mortar building materials.
• Q3: Why does dust overflow during filling?
  A3: The main reasons are blocked dust removal pipeline, loose bag mouth clamping or damaged dust-proof accessories. Regularly clean the dust removal system and check the bag clamping device to ensure closed filling effect.
• Q4: Can the machine pack both powder and granular materials?
  A4: Yes. The equipment supports dual-purpose packaging of powdery materials such as dry mortar and putty powder, as well as granular materials such as dried sand, with strong versatility and wide application range.
• Q5: Is the equipment easy to operate for new workers?
  A5: Absolutely. The machine adopts intelligent touch screen control with visualized operation interface. Workers only need to complete bag loading and bag taking, the whole filling process is automatic, with low operation threshold and simple training.
• Q6: Can packaging specifications be adjusted arbitrarily?
  A6: Yes. The equipment can freely adjust the packaging weight within the 10–50kg range, and the bag clamping mechanism can adapt to different bag sizes, supporting flexible switching of multiple production specifications.
• Q7: How to solve unstable weighing data?
  A7: Unstable weighing is usually caused by sensor dust accumulation, uneven material supply or parameter drift. Regularly clean the weighing system, keep stable feeding, and calibrate the data regularly to ensure accurate and stable weighing.