Keypack Intelligent Liquid VFFS Machine with Upper & Lower Horizontal Sealing KL-300Y is a precision vertical form-fill-seal system engineered for automated liquid and sauce metering and packaging with horizontal top-and-bottom sealing technology. It delivers 20–40 bags per minute with ≤±1% fill accuracy, driven by a PLC servo control system and built with full 304 stainless steel leak-proof construction. Ideal for food-grade sauces, condiments, liquid seasonings, and personal care liquids requiring drip-free filling with superior horizontal seal integrity.
Product Overview
The KL-300Y is a fully automatic liquid VFFS (vertical form-fill-seal) packaging machine purpose-built for liquid and paste-type materials, featuring upper and lower horizontal sealing for maximum seal strength and leak resistance. Unlike conventional back-seal VFFS machines, the KL-300Y's horizontal seal design creates a flat, reinforced top-and-bottom seal that is especially suited to high-viscosity sauces, oils, and liquid condiments that demand zero-leakage packaging performance.
The machine integrates servo pump-controlled metering, anti-drip filling nozzles, PLC automation with a large color touchscreen, and synchronized film registration via color mark detection — all in one continuous bag-make, fill, seal, and cut operation. The system supports multiple bag formats including back seal, three-side seal, and four-side seal configurations, with serrated or flat cut options to match retail and food service presentation requirements.
Equipped with Keypack Intelligent (Kunbupack) servo pump metering technology, the KL-300Y stores packaging parameters for multiple liquid formulations on the touchscreen, enabling rapid product changeover without manual reconfiguration — a critical advantage for sauce and condiment producers running multiple SKUs on a single line. The full 304 stainless steel body with sanitary design ensures compliance with food safety and pharmaceutical hygiene standards, while the sponge air exhaust system improves bag appearance and liquid settling for premium retail presentation.
The KL-300Y can be paired with upstream liquid processing equipment (mixing tanks, homogenizers, pasteurizers) and downstream automation (cartoning, case packing, palletizing) to form a complete liquid packaging line for sauces, condiments, beverages, and personal care liquids.
Key Features and Machine Characteristics
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Upper & Lower Horizontal Seal Design: Top-and-bottom horizontal sealing delivers superior seal integrity, enhanced leak resistance, and premium flat-bottom bag appearance — ideal for liquid sachets, sauce pouches, and condiment single-serve packaging for retail display and food service.
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Drip-Free Anti-Drip Filling System: Servo pump-controlled metering with anti-drip filling nozzle achieves ≤±1% fill accuracy for consistent liquid volumes, eliminating product waste, contamination, and seal contamination from sauce or oil residue.
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PLC Servo Drive Control: Full servo-driven film feeding and sealing system with large color touchscreen interface enables intuitive operation, real-time monitoring, and recipe management for multiple liquid viscosities and sauce formulations.
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Leak-Proof Stainless Steel Construction: Full 304 stainless steel body with reinforced horizontal seal construction prevents leakage and ensures product integrity during storage, cold chain transportation, and consumer use — compliant with food-grade and pharmaceutical hygiene standards.
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Multi-Product Parameter Memory: Touchscreen stores packaging parameters for various liquid viscosities and sauce formulations, enabling quick changeover between products without resetting — reducing downtime and improving line efficiency for multi-SKU sauce producers.
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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 and sauce packaging runs.
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Standard Ribbon Date Coding: Integrated ribbon coding system prints production date, batch number, and expiry date directly on each sachet for full traceability and regulatory compliance in food and pharmaceutical liquid packaging.
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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 sauce and condiment sachets.
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Versatile Bag Format Support: Supports back seal, three-side seal, and four-side seal configurations with serrated or flat cut options, accommodating diverse liquid packaging presentation needs from single-serve sachets to multi-portion pouches.
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Safety Protection Systems: Comprehensive safety guards, emergency stop functions, and interlock systems meet enterprise safety management requirements and protect operators during liquid packaging production.
Application Areas
Sauce & Condiment Packaging (Food Industry):
- Soy sauce, dark soy sauce, and light soy sauce: single-serve sachets for food service, restaurant portion control, and retail dipping sauce packaging
- Chili sauce, hot sauce, and sriracha: portion-controlled sachets for fast food, takeaway, and retail condiment packaging
- Oyster sauce and fish sauce: liquid seasoning sachets for Asian cuisine food service and consumer retail packaging
- Ketchup and tomato sauce: single-serve and multi-portion pouches for food service, catering, and retail condiment packaging
- Mayonnaise and salad dressing: creamy sauce sachets for food service, airline catering, and retail single-serve packaging
- Barbecue sauce and teriyaki sauce: portion-controlled pouches for food service, grilling, and retail condiment packaging
- Vinegar and cooking wine: liquid seasoning sachets for consumer convenience and food service portion control
- Chili oil and sesame oil: flavored oil sachets for restaurant table condiments and retail single-serve packaging
- Honey and syrup: viscous liquid sachets for food service, hotel amenities, and retail single-serve packaging
- Fruit juice and functional beverages: liquid drink sachets for on-the-go consumption, health food retail, and nutritional supplement packaging
- Liquid soup base and broth concentrate: cooking liquid sachets for food service and consumer convenience packaging
Pharmaceutical & Health Liquid Packaging:
- Herbal liquid formulations and concentrated TCM extracts: single-dose sachets for traditional Chinese medicine distribution and health supplement retail
- Oral liquid medications and vitamin solutions: pharmaceutical-grade liquid sachets for single-dose dispensing and patient compliance packaging
- Electrolyte solutions and sports recovery drinks: liquid sachets for pharmaceutical and health food retail packaging
- Mouthwash and oral antiseptic rinse: liquid sachets for travel retail, hotel amenities, and dental hygiene product packaging
Personal Care & Chemical Liquid Packaging:
- Shampoo and conditioner: single-use sachets for hotel amenities, travel retail, and sample distribution packaging
- Body wash and liquid soap: personal care liquid sachets for hospitality, travel, and retail sample packaging
- Liquid laundry detergent and fabric softener: single-dose sachets for consumer convenience and retail packaging
Material Compatibility:
- Low to high viscosity liquids and sauces: 1–10,000 cP (customizable pump configuration for paste-type materials)
- Non-carbonated liquids and sauces without large solid particulates
- Temperature range: ambient to 80°C (hot-fill configuration available for pasteurized sauces and beverages)
- Not recommended for: highly carbonated liquids, materials with large solid chunks (>5mm), or abrasive slurries without custom nozzle configuration
Technical Specifications
| Model |
KL-300Y Liquid VFFS Machine with Upper & Lower Horizontal Sealing |
| Material |
304 Stainless Steel (316 SS upgrade available for acidic/corrosive liquids) |
| Control System |
PLC System with Servo Drive + Large Color Touchscreen |
| Seal Type |
Upper & Lower Horizontal Seal (Top and Bottom) |
| Bag Size Range |
Width: 30–150 mm × Length: 50–165 mm |
| Fill Accuracy |
≤±1% |
| Packaging Speed |
20–40 bags/minute |
| Voltage |
Single-phase 220V / 50Hz |
| Power |
1.5 kW |
| Bag Styles |
Back seal, Three-side seal, Four-side seal — serrated cut or flat cut |
Customization and Optional Configurations
The KL-300Y can be configured with a range of optional modules to match specific liquid and sauce packaging requirements: multi-head piston pumps for improved throughput with high-viscosity sauces, heated filling nozzles for hot-fill sauce and beverage applications, nitrogen flushing systems for extended shelf life and oxidation prevention in oil and sauce packaging, anti-foam systems for foaming liquid detergents and beverages, 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 acidic condiments, vinegar-based sauces, or corrosive chemical liquids.
Delivery and Support
Keypack Intelligent provides comprehensive installation, commissioning, and operator training services for liquid and sauce 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 horizontal seal liquid packaging requirements and production capacity needs.
