Keypack Intelligent Liquid Metering Vertical Form-Fill-Seal Machine is a PLC servo-controlled VFFS Machine engineered for accurate, continuous liquid filling and packaging of food, cosmetic, and chemical liquid products. It integrates servo liquid metering, bag forming, filling, sealing, date printing, and finished product conveying into a single automated workflow, delivering stable and consistent output across production shifts. Ideal for food liquid packaging lines, cosmetic liquid filling operations, and chemical liquid packaging machine applications.
Product Overview
The Keypack Intelligent Liquid Metering Vertical Form-Fill-Seal Machine is a fully automatic Vertical Packaging Machine designed to handle a wide range of liquid materials — from thin, free-flowing liquids such as juice, edible oil, and health drinks to viscous products such as sauces, tomato paste, salad dressing, cheese sauce, shampoo, lotion, and liquid detergent.
At its core, the machine uses a PLC servo control system combined with a pneumatic control system and an extra-large touchscreen HMI. The touchscreen stores multiple product packaging parameter sets, allowing operators to switch between liquid types or bag formats quickly without manual reconfiguration — reducing changeover time and improving line efficiency.
The Keypack Intelligent (Kunbupack) Liquid Packaging Machine supports pillow-type bags and hanging-hole bags, and uses single-belt or dual-belt film transportation for fast, stable, low-friction film feeding. When paired with compatible liquid metering and conveying systems, it automatically completes the full packaging cycle: liquid feeding, servo metering, bag forming, filling, sealing, gas flushing or exhaust, date printing, counting, and finished product conveying — all in one continuous process.
An intelligent temperature control system maintains precise sealing temperature throughout operation, producing smooth, flat, and reliable seals on every liquid packaging bag. A built-in fault display and alarm system provides real-time diagnostics to help operators identify and resolve issues quickly, minimizing unplanned downtime on the liquid packaging line.
Key Features and Machine Characteristics
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PLC Servo Control + Pneumatic System + Touchscreen HMI: The integrated control architecture delivers high precision, operational stability, and intelligent automation across the full liquid packaging cycle — from metering to finished product output.
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Intelligent Temperature-Controlled Sealing: An intelligent temperature controller maintains accurate sealing temperature throughout production, ensuring neat, flat, and consistent seals on every liquid packaging bag and reducing seal defects caused by temperature fluctuation.
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Multi-Parameter Touchscreen Storage: The touchscreen HMI stores packaging parameters for multiple liquid products and bag formats. Operators can recall saved settings instantly during product changeover, reducing setup time on the liquid filling line.
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Integrated Full-Process Automation: When configured with compatible liquid metering and conveying systems, the machine automatically completes liquid feeding, servo metering, bag forming, filling, sealing, gas flushing or exhaust, date printing, counting, and finished product conveying in a single uninterrupted workflow.
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Single-Belt or Dual-Belt Film Transport: Both film pulling configurations are available, providing fast, stable, low-friction, and low-wear film feeding suitable for sustained high-speed liquid VFFS machine operation.
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Real-Time Fault Display and Diagnostics: A built-in fault display and alarm system identifies machine status in real time, helping operators locate and resolve issues quickly to minimize downtime on the liquid packaging line.
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Safety Guard Enclosure: Equipped with safety protection mechanisms that meet industrial safety management requirements for automatic liquid packaging equipment environments.
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Flexible Bag Format Support: Supports pillow-type bags and hanging-hole bags, with customization available to meet specific liquid packaging format requirements.
Application Areas
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Food Liquid Packaging: Sauce and condiment filling for food production lines — including tomato sauce, salad dressing, cheese sauce, and chili sauce; edible oil portioning and sealing for cooking oil packaging; syrup and honey filling for food and beverage manufacturers; juice and health drink packaging for beverage producers; seasoning liquid filling for food processing applications.
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Cosmetics and Personal Care Liquid Filling: Shampoo and conditioner filling for personal care packaging lines; lotion and body wash filling for cosmetic manufacturers; mouthwash and liquid soap packaging for hygiene product lines; liquid products with moderate viscosity suitable for servo metering and VFFS bag sealing.
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Chemical and Daily Chemical Liquid Packaging: Liquid detergent filling and sealing for household and industrial cleaning product lines; daily chemical liquid packaging machine applications for cleaning agents, disinfectants, and similar chemical liquid products in sealed, labeled, and counted bag formats.
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Automatic Liquid Packaging Lines: Turnkey integration as a Vertical Form Fill Seal Machine within end-to-end liquid packaging lines requiring Liquid Filling Machine, Automatic Liquid Filler, and Vertical Packaging Machine capabilities — suitable for food, cosmetic, and industrial liquid packaging operations.
Technical Specifications
| Specification |
KL-320 |
KL-420 |
KL-520 |
KL-620 |
KL-820 |
KL-1250 |
| Making Bag Size |
(L) 60–250 mm / (W) 50–150 mm |
(L) 60–300 mm / (W) 60–200 mm |
(L) 80–350 mm / (W) 80–250 mm |
(L) 100–400 mm / (W) 100–300 mm |
(L) 120–500 mm / (W) 120–400 mm |
(L) 150–800 mm / (W) 150–600 mm |
| Packing Speed |
40–100 bags/min |
35–80 bags/min |
30–80 bags/min |
30–70 bags/min |
20–60 bags/min |
5–30 bags/min |
| Power Supply |
220V / 50-60Hz / 3.0 kW |
220V / 50-60Hz / 3.0 kW |
220V / 50-60Hz / 4 kW |
220V / 50-60Hz / 4 kW |
220V / 50-60Hz / 4 kW |
220V / 50-60Hz / 5 kW |
| Compressed Air Consumption |
6–8 kg/m² / 0.3 m³/min |
6–8 kg/m² / 0.3 m³/min |
6–8 kg/m² / 0.3 m³/min |
6–8 kg/m² / 0.3 m³/min |
6–8 kg/m² / 0.3 m³/min |
6–8 kg/m² / 0.3 m³/min |
| Machine Weight |
300 kg |
350 kg |
350 kg |
400 kg |
450 kg |
500 kg |
| Dimensions (L × W × H) |
1400 × 1000 × 1200 mm |
1650 × 1100 × 1500 mm |
1650 × 1200 × 1600 mm |
1800 × 1300 × 1750 mm |
2050 × 1600 × 2050 mm |
2128 × 2057 × 2385 mm |
Customization and Optional Modules
- Servo liquid metering system — configurable based on liquid viscosity and fill volume requirements
- Gas flushing (MAP) or exhaust module for modified atmosphere or vacuum liquid packaging
- Date printing module
- Finished product conveying system
- Single-belt or dual-belt film pulling configuration
- Pillow bag or hanging-hole bag format
- Safety guard enclosure
