Back Sealing Strip Packaging Machine 20-40 Bags/Min for Liquids Powders Granules

Automated strip packaging machine delivers 20-40 bags/min with precise PLC control. Reliable back & horizontal sealing ensures leak-proof integrity for liquids, powders, and granules. Customizable bag sizes (20–80mm width, ≤150mm length) and clean pattern-free finishes enhance production efficiency. Durable stainless steel build supports continuous, stable output.

Product Details

Back Sealing Strip Packaging Machine

The Back Sealing Strip Packaging Machine represents a pinnacle of automated packaging technology, engineered specifically for the high-speed, precise, and reliable forming, filling, and sealing of small pouches. This system is designed to handle composite plastic films, offering manufacturers a flexible and robust solution for diverse production demands. Capable of creating bags within a width range of 20 to 80 mm and lengths up to 150 mm, it excels in packaging liquids, powders, and granular materials with consistent quality. Its core design philosophy centers on delivering stable, efficient, and dependable sealing performance, making it an indispensable asset for modern production lines that prioritize output reliability and operational simplicity.

Product Features

This machine integrates several advanced features to ensure superior packaging performance. It operates at a consistent speed of 20 to 40 bags per minute, facilitating efficient continuous production with minimal manual intervention. The sealing system is highly adaptable, featuring an adjustable back sealing width of 5–10 mm for a clean, pattern-free finish. Horizontal sealing offers an 8–10 mm width with optional diagonal mesh (1 mm spacing) or straight line (2 mm spacing) patterns to enhance both seal strength and aesthetic uniformity. A dedicated 1 mm leak-proof line is available for liquid packaging applications, significantly improving seal integrity to prevent leakage during transit and storage. Precise dosing is achieved with a measurement accuracy of ±1–10%, adaptable to various materials and fill volumes. The bag pulling mechanism utilizes a variable-frequency motor with a crank structure and heat-sealed pulling for smooth film advancement and repeatable bag length control. Operation is managed by a stable PLC control system for easy parameter setting and consistent performance, while a JULONG dual-color photoelectric eye ensures accurate film tracking and cutting registration, particularly for printed materials.

Technical Specifications
Parameter Detail
Machine Model Back Sealing Strip Packaging Machine
Operation Type Fully Automatic
Bag Dimensions Width: 20–80 mm; Length: ≤150 mm
Production Speed 20–40 bags/minute
Filling Accuracy ±1–10% (material & quantity dependent)
Film Material Composite Plastic Packaging Films
Back Seal Width 5–10 mm (Plain)
Horizontal Seal Width 8–10 mm (Diagonal Mesh: 1mm space or Straight Line: 2mm space)
Leak-Proof Feature 1 mm Line (For Liquid Packaging)
Sealing Method Twisted Edge Adhesive Seal
Bag Advance System Variable Frequency Motor with Crank; Heat-Sealed Pulling
Cutting Method Flat or Serrated Cut (Independent Cutter, 3mm spacing)
Control System Programmable Logic Controller (PLC)
Registration System JULONG Dual-Color Photoelectric Eye
Construction Material Stainless Steel
Machine Weight Approximately 350 kg
Machine Dimensions Customizable per requirement
Application Fields

The versatility of the Back Sealing Strip Packaging Machine makes it suitable for a wide array of automated packaging applications across multiple industries. It is ideally deployed for packaging products in small, precise pouches using composite films. Key application areas include the food and beverage sector for liquid condiments, sauces, and powdered ingredients; the daily chemical industry for single-use shampoo, detergent, or cosmetic samples; agricultural products for seeds, fertilizers, and pesticides; and general industrial packaging for small hardware, granules, and components. It is particularly valued in operations where requirements for compact bag sizes, clean back sealing, robust horizontal seals, and consistent, high-speed output are critical to production efficiency and product presentation.

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