20–40 Bags/Min Automatic Back Sealing Strip Plastic Film Packaging Machine

High-speed back sealing strip packer for liquids, powders and granules, delivering 20–40 bags/min with accurate dosing and leak-proof seals. Adjustable 20–80 mm bags, PLC control and photoelectric tracking ensure neat, consistent packs, reduced labor, and reliable performance for modern production lines.

Product Details

Back Sealing Strip Packaging Machine

The Back Sealing Strip Packaging Machine represents a sophisticated automated solution for the high-speed, reliable packaging of small-format pouches. Engineered to handle composite plastic films with precision, this system integrates forming, filling, and sealing processes into a seamless, continuous operation. It is specifically designed for the efficient packaging of liquids, powders, and granular products, offering a versatile and robust performance that meets the stringent demands of modern production lines. With a customizable design and a focus on consistent output, this machine provides a practical and dependable foundation for automated packaging applications across diverse industries.

Product Features

This packaging machine is distinguished by a suite of advanced features engineered for performance, reliability, and adaptability. Its core design prioritizes stable operation and high-quality sealing to ensure product integrity and production efficiency.

Stable High-Speed Production

The system delivers consistent output at speeds ranging from 20 to 40 bags per minute. This efficient operation supports continuous production runs, minimizing downtime and manual intervention while maintaining precise sealing and cutting quality throughout the process.

Robust and Adjustable Sealing System

Featuring a versatile sealing mechanism, the machine offers a clean, pattern-free back seal with an adjustable width of 5–10 mm. The horizontal sealing is equally robust, providing an 8–10 mm seal width with optional diagonal mesh (1 mm spacing) or straight line (2 mm spacing) patterns to enhance both the mechanical strength and visual appeal of the final package.

Enhanced Integrity for Liquid Packaging

Specifically for liquid products, an integrated 1 mm horizontal leak-proof sealing line is available. This critical feature significantly improves seal integrity, effectively reducing the potential for leakage during filling, transportation, and storage, thereby ensuring product safety and minimizing waste.

Precision Dosing and Bag Forming

The machine ensures accurate product measurement with a tolerance of ±1–10%, dependent on material characteristics and fill volume. Coupled with a variable-frequency motor-driven crank system for heat-sealed bag pulling, it guarantees smooth film advancement and repeatable, consistent pouch length for uniform package appearance.

Intelligent Control and Detection

Operation is managed by a reliable PLC control system, enabling stable performance, easy parameter adjustments, and reproducible results. A JULONG dual-color photoelectric eye provides precise tracking of film registration and cutting positions, ensuring high consistency, especially when working with pre-printed packaging materials.

Technical Specifications

Parameter Specification
Machine Model Back Sealing Strip Packaging Machine
Operation Type Fully Automatic
Pouch Dimension Range Width: 20–80 mm; Length: Up to 150 mm
Production Speed 20–40 bags per minute
Filling Accuracy ±1% to ±10% (material dependent)
Compatible Film Composite Plastic Packaging Materials
Back Seal Width 5–10 mm (Pattern-Free)
Horizontal Seal Width 8–10 mm
Horizontal Seal Pattern Diagonal Mesh (1mm) or Straight Line (2mm)
Leak-Proof Sealing Line 1 mm (For Liquid Applications)
Sealing Method Twisted Edge Adhesive Seal
Film Advancement Variable Frequency Motor with Crank & Heat Seal Pulling
Cutting Method Flat or Serrated Cut (Independent Cutter, 3mm Spacing)
Control System Programmable Logic Controller (PLC)
Registration System JULONG Dual-Color Photoelectric Eye
Primary Construction Stainless Steel
Machine Weight Approximately 350 kg
Machine Dimensions Customizable per configuration

Application Fields

The Back Sealing Strip Packaging Machine is ideally suited for automated, small-pouch packaging across a wide spectrum of industries. Its reliable sealing and precise forming make it perfect for packaging liquid condiments, sauces, and beverages where leak prevention is critical. It is equally effective for packaging powdered substances like spices, instant drink mixes, and pharmaceuticals, as well as granular products such as seeds, nuts, and small hardware components. Common sectors utilizing this technology include the food and beverage industry, daily chemical and personal care, agriculture, and various light industrial manufacturing operations that require efficient, clean, and dependable packaging for compact products.

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