Keypack Intelligent Liquid Pneumatic Packaging Machine KL-300Y is a vertical form-fill-seal machine engineered for precise, leak-proof metering and packaging of liquid materials across food, pharmaceutical, and chemical industries. It delivers 20–40 bags per minute with ≤±1% filling accuracy, driven by a PLC servo control system and built with full 304 stainless steel construction. Ideal for seasoning sauces, condiments, traditional Chinese medicine drinks, mouthwash, and health beverages requiring clean, economical liquid sachet packaging.
Product Overview
The KL-300Y is a fully automatic liquid vertical form-fill-seal (VFFS) machine purpose-built for liquid and flowable materials, featuring a pneumatic liquid filling structure with anti-drip design for leak-proof bag closure. Unlike conventional liquid filling machines, the KL-300Y integrates pneumatic metering with vertical bag forming, delivering a cost-effective and stable liquid packaging solution that minimizes equipment investment and operating costs — making it an ideal economical packaging machine for producers seeking reliable liquid VFFS performance.
The machine integrates a PLC servo drive control system with an extra-large color touchscreen interface, enabling precise bag formation, accurate liquid filling, secure sealing, ribbon date coding, and sachet cutting — all in one continuous automated operation. The system supports multiple packaging film types including Paper/PE, PET/AL, Foil/PE, Nylon/PE, and tea-leaf filtering paper, providing versatility across food, pharmaceutical, and chemical liquid packaging applications.
Equipped with Keypack Intelligent (Kunbupack) vertical packaging technology, the KL-300Y stores packaging parameters for multiple liquid products on the touchscreen, enabling rapid product changeover without manual reconfiguration — a key advantage for liquid producers running multiple SKUs on a single packaging line. Color mark detection ensures precise film registration for printed packaging films, while the sponge air exhaust system improves bag appearance and liquid settling for a clean, professional retail presentation.
The KL-300Y can be paired with corresponding metering systems and conveying systems to automatically complete the full liquid packaging process: product metering, bag making, gas flushing or air evacuation, date printing, and counting.
Technical Specifications
| Model |
KL-300Y Vertical Automatic Packaging Machine |
| Material |
304 Stainless Steel |
| Control System |
PLC System with Servo Drive |
| Bag Size Range |
Width: 30–150 mm × Length: 50–165 mm |
| Filling Accuracy |
≤±1% |
| Packaging Speed |
20–40 bags/minute |
| Voltage |
Single-phase 220V / 50Hz |
| Power |
1.5 kW |
| Bag Styles |
Back seal (serrated/flat cut), Three-side seal (serrated/flat cut), Four-side seal (serrated/flat cut) |
| Compatible Films |
Paper/PE, PET/AL, Foil/PE, Nylon/PE, Tea-leaf filtering paper |
Key Features and Machine Characteristics
-
Pneumatic Liquid Filling Structure with Anti-Drip Design: The pneumatic-driven filling system delivers stable, controlled liquid dosing with an anti-drip, leak-proof nozzle design — ensuring clean bag sealing and eliminating liquid contamination on the seal area for sauces, condiments, and health drinks.
-
PLC Servo Drive Control with Extra-Large Touchscreen: Full servo-driven film feeding and sealing system with a large color touchscreen interface enables intuitive operation, real-time monitoring, and recipe management for multiple liquid formulations and bag formats — maximizing overall machine control precision.
-
Multi-Product Parameter Memory: Touchscreen stores packaging process parameters for various liquid products, enabling quick changeover between SKUs without resetting — reducing downtime and improving line efficiency for multi-product liquid packaging operations.
-
Color Mark Detection & Film Registration: Automatic color mark sensor ensures precise film registration for printed packaging films, maintaining consistent bag length and label alignment across all liquid packaging runs.
-
Standard Ribbon Date Coding: Integrated ribbon coding system prints production date, batch number, and expiry date on each sachet for full traceability and regulatory compliance in food and pharmaceutical liquid packaging.
-
Sponge Air Exhaust System: Removes excess air from liquid-filled bags before sealing, improving bag appearance, reducing headspace, and ensuring a clean, professional presentation for retail liquid sachets.
-
Full 304 Stainless Steel Construction: Corrosion-resistant stainless steel body with sanitary design ensures durability, aesthetic appeal, and compliance with food safety and pharmaceutical hygiene standards for liquid packaging environments.
-
Safety Protection Systems: Comprehensive safety guards, emergency stop functions, and interlock systems meet enterprise safety management requirements and protect operators during liquid packaging production.
-
Economical Liquid Packaging Solution: Designed to effectively control equipment investment and operating costs, the KL-300Y delivers reliable vertical form-fill-seal performance at an accessible price point — ideal for small-to-medium liquid packaging producers.
Application Areas
Food Industry — Liquid Materials:
- Seasoning sauce and condiment liquid packaging: soy sauce, oyster sauce, chili sauce, vinegar, and cooking sauce for single-serve sachet and food service portion packaging
- Health beverages and nutritional drinks: liquid health supplements, collagen drinks, and functional beverage sachets for retail and e-commerce packaging
- Soup base liquid and broth concentrate: instant soup liquid and stock concentrate for single-serve sachet and food service packaging
- Edible oil and flavored oil: small-portion cooking oil and seasoning oil sachets for food service and retail liquid packaging
Pharmaceutical Industry — Liquid Materials:
- Traditional Chinese medicine drinks: herbal liquid extract and concentrated TCM beverage for single-dose pharmaceutical sachet packaging
- Oral liquid medicine: syrup, tonic liquid, and oral rehydration solution for single-dose dispensing and patient compliance packaging
- Mouthwash and oral care liquid: antiseptic mouthwash and dental rinse for single-use portion and retail liquid sachet packaging
Chemical Industry — Liquid Materials:
- Detergent liquid and laundry liquid: single-dose liquid detergent sachets for consumer convenience and retail packaging
- Industrial cleaning liquid: specialty chemical cleaning solution for single-use portion and industrial distribution packaging
- Water-soluble chemical liquid: agricultural liquid formulations for precise single-dose application and retail packaging
Material Compatibility:
- Free-flowing liquid materials suitable for pneumatic metering
- Low-viscosity to medium-viscosity liquids compatible with standard pneumatic filling nozzles
- Not recommended for: highly viscous pastes or slurries without custom metering configuration, or liquids with large solid particles
Customization and Optional Configurations
The KL-300Y can be configured with corresponding metering systems and conveying systems according to specific liquid properties and filling requirements. Optional modules include piston fillers for viscous liquid metering, nitrogen flushing systems for extended shelf life and oxidation prevention in health drink and pharmaceutical liquid packaging, dust collection systems for clean production environments, and advanced thermal transfer or inkjet coding systems for batch traceability and regulatory compliance.
Delivery and Support
Keypack Intelligent provides comprehensive installation, commissioning, and operator training services for liquid packaging applications. The KL-300Y comes with standard warranty coverage, spare parts availability, and dedicated 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.
