Keypack Intelligent Liquid Back Seal VFFS Packaging Machine KL-300Y is a high-precision vertical form-fill-seal system designed for automated liquid product metering and packaging. It delivers 20-40 bags per minute with ≤±1% weighing accuracy, powered by PLC servo drive system and 304 stainless steel anti-drip construction. Ideal for food, pharmaceutical, and chemical industries requiring leak-proof liquid sachet filling and secure back seal bag packaging solutions.
Product Overview
The KL-300Y Liquid Packaging Machine is a fully automatic back seal VFFS machine engineered specifically for liquid material metering and packaging applications. This servo-driven vertical packaging machine integrates advanced PLC control with a large touchscreen interface, enabling precise bag formation, drip-free liquid filling, secure sealing, and coding in one continuous operation. Built with full 304 stainless steel body and anti-drip filling nozzle design, the machine ensures durability, hygiene compliance, and contamination prevention for food-grade and pharmaceutical liquid packaging.
The system supports multiple film types including Paper/PE, PET/AL, Foil/PE, Nylon/PE, and tea-leaf filtering paper, making it versatile across seasoning sauce packaging, condiment packaging, traditional Chinese medicine drink packaging, mouthwash packaging, and health drink packaging applications. Equipped with Keypack Intelligent (Kunbupack) servo pump-controlled metering technology, the KL-300Y offers synchronized process parameter backup, allowing operators to store and recall packaging parameters for multiple liquid products without reconfiguration.
The machine features color mark detection for accurate film registration, standard ribbon date coding for production traceability, and sponge air exhaust for improved bag appearance and liquid settling. It can be paired with corresponding liquid pumps, servo filling systems, and conveying systems to automatically complete product metering, bag making, gas flushing or air evacuation, date printing, and counting throughout the entire liquid packaging process.
Key Features and Machine Characteristics
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PLC Servo Drive System: Maximizes control precision and packaging consistency with large touchscreen interface for intuitive operation, real-time monitoring, and recipe management for multiple liquid formulations
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Anti-Drip Filling Nozzle: No-drip filling spout design prevents liquid spillage and contamination, ensuring clean bag sealing area and secure back seal integrity
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Servo Pump-Controlled Metering: Achieves ≤±1% weighing accuracy for consistent fill volumes, reduced product giveaway, and compliance with net weight regulations for liquid products
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Secure Back Seal Design: Reinforced sealing mechanism ensures leak-proof packaging for liquid products with strong, durable seals that prevent product leakage during storage and transport
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Multi-Product Memory: Touchscreen stores packaging process parameters for various liquid formulations, enabling quick changeover without resetting and reducing downtime between production runs
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Safety Protection: Equipped with comprehensive safety guards, emergency stop functions, and interlock systems to meet enterprise safety management requirements and operator protection standards
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304 Stainless Steel Construction: Full stainless steel body with sanitary design ensures aesthetic appeal, durability, and compliance with food safety and pharmaceutical hygiene standards
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Drip-Free Filling System: Precision-controlled liquid delivery path with anti-drip nozzle minimizes product waste and ensures clean packaging environment during filling operations
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Flexible Bag Formats: Supports back seal serrated cut and back seal flat cut bag styles for diverse packaging presentation needs and easy-open consumer convenience
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Standard Function Package: Includes color mark detection for accurate film registration, standard ribbon coding for production date printing, and sponge air exhaust for liquid settling and bag aesthetics
Application Areas
Food Industry:
- Seasoning sauces: soy sauce sachets, hot sauce portions, teriyaki sauce, BBQ sauce for food service and retail packaging
- Condiments: ketchup sachets, mustard portions, mayonnaise, salad dressing for portion control and convenience packaging
- Liquid seasonings: cooking wine sachets, vinegar portions, fish sauce, oyster sauce for single-serve applications
- Health drinks: functional beverage sachets, energy drink portions, vitamin drinks for on-the-go consumption
Pharmaceutical Industry:
- Traditional Chinese medicine drinks: herbal liquid formulations, concentrated extracts, medicinal drink sachets
- Pharmaceutical liquids: oral suspension sachets, liquid vitamin supplements, electrolyte solutions
- Medical nutrition: liquid nutritional supplements, oral rehydration sachets, dietary supplement portions
Personal Care and Chemical Industry:
- Oral care: mouthwash sachets, oral rinse portions for travel and hospitality applications
- Hair care: shampoo sachets, conditioner portions, hair treatment samples for retail and hospitality
- Liquid detergents: laundry detergent sachets, fabric softener portions for single-use convenience
- Automotive fluids: motor oil sachets, lubricant portions for precise application and sampling
Material Compatibility:
- Low to medium viscosity liquids (water-like to light syrup consistency)
- Non-carbonated liquid formulations
- Liquids with stable suspension (minimal settling or separation)
Technical Specifications
| Model |
KL-300Y Vertical Automatic Packaging Machine |
| Material |
304 Stainless Steel |
| Control System |
PLC System with Servo Drive |
| Bag Size Range |
Width: 30-150mm × Length: 50-165mm |
| Weighing Accuracy |
≤±1% |
| Packaging Speed |
20-40 bags/minute |
| Voltage |
Single-phase 220V/50Hz |
| Power |
1.5 kW |
| Suitable Packaging Materials |
Paper/PE, PET/AL, Foil/PE, Nylon/PE, Tea-leaf filtering paper |
| Bag Styles |
Back seal serrated cut / Back seal flat cut |
Customization and Optional Configurations
The machine can be configured with corresponding metering systems and conveying systems according to specific liquid properties. Optional modules include servo-controlled piston pumps for improved accuracy, peristaltic pumps for gentle product handling, heated filling nozzles for temperature-sensitive liquids, nitrogen flushing systems for extended shelf life and oxidation prevention, and advanced thermal transfer or inkjet coding systems for batch traceability and regulatory compliance.
Material contact parts can be upgraded to 316 stainless steel for corrosive or acidic liquid formulations. The machine supports integration with upstream liquid processing equipment (mixing, homogenizing, heating) and downstream production line equipment (cartoning, case packing, palletizing) for complete liquid packaging automation.
Delivery and Support
Keypack Intelligent provides comprehensive installation, commissioning, and operator training services for liquid packaging applications. The machine comes with standard warranty coverage, spare parts availability, and technical support to ensure continuous production uptime. Delivery timelines and customization options are available upon consultation to meet specific liquid packaging requirements and production capacity needs.
