Vertical Form-Fill-Seal Packaging Machine KL420

Keypack Intelligent KL420 Vertical Form-Fill-Seal Packaging Machine — a Back-Seal Vertical Packaging Machine designed for automated metering and packaging of irregular block, granular, powder, and liquid materials. Suited for food, powder, condiment, and beverage packaging lines, the KL420 operates at 35–80 bags/min with PLC servo control, pneumatic actuation, and intelligent temperature management, supporting consistent output across varied material types as an Automatic Metering Packaging Machine.

Product Overview

The Keypack Intelligent KL420 Vertical Form-Fill-Seal Machine is a fully automated Back-Seal VFFS Machine designed to handle a broad range of material types — from free-flowing granules and fine powders to irregular solid pieces and pourable liquids. As a versatile Granular Packaging Machine and Powder Packaging Machine, the KL420 integrates metering, feeding, bag forming, filling, sealing, date printing, gas flushing or evacuation, finished product conveying, and automatic counting into a single continuous workflow.

Compatible metering systems and conveying systems can be configured according to the specific properties of each product, making the KL420 a scalable solution for single-SKU and multi-product packaging environments. The machine supports pillow-type bags and hang-hole bags, with single-belt or dual-belt film transport options to suit different line speeds and film materials.

Built around a PLC servo system, pneumatic control system, and large-format touchscreen interface, the Keypack Intelligent (Kunbupack) KL420 Food Packaging Machine achieves high control precision, operational reliability, and a strong degree of intelligent automation — suitable for manufacturers seeking to upgrade or expand their automated packaging capacity.

Key Features and Machine Characteristics

• Safety protection devices are integrated throughout the machine to meet enterprise safety management requirements for automatic packaging equipment.
• Intelligent temperature control system maintains precise sealing temperature, producing neat, smooth, and consistent seals across varying operating conditions.
• PLC servo control system combined with a pneumatic control system and large-format touchscreen interface forms the core drive and control architecture, maximizing control accuracy, reliability, and intelligent automation capability.
• Full-process automation: when paired with appropriate metering configurations, the machine automatically completes metering, feeding, filling, bag forming, date printing, gas flushing or evacuation, finished product conveying, and counting — without manual intervention.
• Multi-product parameter storage: the touchscreen stores packaging process parameters for multiple product types. During product changeover, stored parameters can be recalled instantly without re-configuration, reducing changeover downtime.
• Fault display system provides clear fault indication to assist operators in rapid troubleshooting and minimizing unplanned stoppages.
• Flexible bag format support: the machine can be configured to produce pillow-type bags or hang-hole bags according to specific packaging and retail display requirements.
• Single-belt or dual-belt film transport ensures fast, stable film feeding with low friction and minimal film waste across a wide range of packaging film types.

Application Areas

The KL420 Vertical Form-Fill-Seal Machine is suited for a wide range of industries and material types as a Liquid Packaging Machine, Powder Packaging Machine, and Granular Packaging Machine:

• Confectionery & Snack Food: back-seal pillow bag packaging for candies, puffed snacks, small biscuits, roasted nuts, and dried fruits — suitable for irregular block and granular materials with varying piece sizes
• Sugar & Dry Goods: granulated sugar and similar free-flowing granular materials requiring accurate volumetric or weighing metering into back-seal bags
• Frozen Food: quick-frozen food items requiring sealed, gas-flushed packaging to maintain product integrity during cold chain storage and distribution
• Dairy & Powder: milk powder and milk tea powder with pneumatic conveying to hopper, powder-grade sealing for moisture-sensitive products; starch and similar fine powders requiring consistent portion control
• Condiments & Seasonings: powder and granular seasoning blends requiring accurate portion control and consistent back-seal packaging for retail and foodservice formats
• Sauces & Liquid Products: pourable sauces and beverages requiring liquid-compatible filling systems with reliable heat sealing
• Multi-Product Lines: operations requiring a single Vertical Packaging Machine Single Unit to handle multiple product types with fast parameter recall and flexible bag format switching

Customization & Compatible Modules

• Metering system: configurable per product properties (volumetric, weighing, or screw metering)
• Conveying system: adaptable to upstream and downstream line integration
• Film transport: single-belt or dual-belt configuration
• Gas module: gas flushing or evacuation (MAP-compatible)
• Date coding: integrated date printing module
• Bag format: pillow bag, back-seal bag, or hang-hole bag

Delivery & Support

Lead time, installation, commissioning, operator training, spare parts supply, and warranty terms are available upon inquiry — please contact our team for project-specific details.

Product Specifications