Liquid High-Speed Packaging Machine KP-420

The Keypack KP-420 is a high-speed Vertical Form-Fill-Seal (VFFS) machine designed for continuous automated packaging of liquid and sauce-type materials at industrial production rates. Driven by a 5-servo multi-axis system with PLC control, the KP-420 operates at 100–150 bags/min across back-seal and gusseted back-seal bag formats (L: 80–300 mm, W: 80–200 mm). It is suited to liquid packaging applications in food condiments, daily chemical products, and beverage manufacturing, where stable fill accuracy, consistent seal integrity, and sustained high-speed output are primary operational requirements.

Product Overview

The KP-420 High-Speed Vertical Packaging Machine is purpose-built for liquid material packaging, integrating a 5-servo motor system, pneumatic control, and a touchscreen HMI as its core drive and control architecture. The dual film-pulling structure ensures consistent bag formation and stable film feeding at rated speed, while independent electrical and pneumatic control cabinets reduce operating noise, improve sealing integrity, and extend overall machine service life.

Equipped with a Japan Koganei vacuum pump, the KP-420 achieves rapid and stable film pulling even during sustained high-speed operation. The touchscreen HMI supports storage of multiple product packaging parameter sets, enabling fast format changeover between different SKUs with minimal manual intervention. A built-in fault display system provides real-time diagnostics, helping operators identify and resolve issues promptly to minimize unplanned downtime.

The machine automatically completes the full packaging sequence — metering, filling, bag-making, gas flushing or evacuation, date printing, and counting — forming a complete, integrated automated packaging process. Keypack Intelligent (KunbuPack) VFFS Liquid Packaging Machine is designed to interface with upstream metering systems and downstream conveying systems, supporting turnkey end-to-end packaging line configurations tailored to specific product and production requirements.

Machine Specifications

Key Features and Machine Characteristics

• 5-Servo Multi-Axis Drive System: Delivers high motion control precision across all packaging stages, reducing mechanical wear and supporting stable long-term operation at rated speed.
• Intelligent Temperature Control: Smart temperature controller maintains accurate sealing temperatures, producing clean, flat, and consistent seals across all supported bag formats.
• Japan Koganei Vacuum Pump: Ensures stable, high-speed film feeding with low vibration — supporting sustained output without performance degradation during continuous production runs.
• Touchscreen HMI with Multi-Recipe Storage: Operators can save and recall packaging parameters for different products, enabling fast changeover with minimal manual adjustment and reduced setup time.
• Built-in Fault Diagnostics: Real-time fault display system identifies issues promptly, reducing troubleshooting time and supporting continuous, uninterrupted production.
• Independent Electrical and Pneumatic Control Cabinets: Separated enclosures reduce electromagnetic interference, lower operating noise, improve sealing performance, and extend machine service life.
• Safety Protection System: Designed in compliance with enterprise-level safety management requirements, supporting safe operation in regulated manufacturing environments.
• Flexible Bag Style Configuration: Supports back-seal bags, gusseted back-seal bags, hang-hole bags, and other formats — configurable per customer production requirements.
• Full-Process Automation: Integrates metering, filling, bag-making, gas flushing/evacuation, date printing, and counting into a single continuous automated workflow.

Application Areas

• Food & Condiment Industry: Liquid filling and back-seal pouch packaging for soy sauce, vinegar, oyster sauce, hot pot base, chili oil, and other sauce-type condiments.
• Jam & Paste Products: Automated pouch packaging for peanut butter, fruit jam, sesame paste, and similar viscous liquid materials.
• Daily Chemical Industry: High-speed liquid packaging for shampoo, body wash, hand sanitizer, and liquid detergent in composite film back-seal pouches.
• Beverage & Dairy: Applicable for liquid beverage and dairy product pouch packaging using composite film materials in back-seal bag format.
• Pharmaceutical & Nutraceutical: Liquid oral solution or supplement pouch packaging where PLC-controlled precision filling, date printing, and counting are required.

Customization and Optional Modules

• Compatible with corresponding metering systems (volumetric, piston, or flow-meter based) and conveying systems based on product properties and production layout.
• Bag style configurable to pillow bags, hang-hole bags, gusseted back-seal bags, and other formats per customer requirements.
• Supports integration into turnkey end-to-end packaging lines including upstream filling and downstream labeling, checkweighing, and palletizing systems.
• Packaging film material options: PET/PE, OPP/CPP, OPP/PE, and other composite films.

Delivery and Support

• Factory Acceptance Testing (FAT) available prior to shipment upon request.
• On-site installation, commissioning, and operator training support available.
• Spare parts supply and after-sales technical support provided.
• Specific lead times, warranty terms, and service scope are confirmed at the project quotation stage.