The Back Sealing Strip Packaging Machine is a fully automatic vertical form-fill-seal (VFFS) solution designed for efficient small-bag and sachet production. Built around a hygienic stainless-steel frame and a stable PLC control platform, it combines film forming, dosing coordination, back sealing, horizontal sealing, cutting, and finished-pack discharge into one continuous workflow. Its compact layout helps maximize factory floor utilization, while the adjustable bag-making configuration supports flexible packaging requirements across liquids, powders, and granules. With dependable film tracking and consistent seal quality, the machine is engineered to deliver clean, professional-looking packs and reliable leak-resistant performance for compatible materials in daily production.
Product Introduction
Designed for manufacturers that demand steady output and repeatable packaging quality, this machine forms a back-sealed strip pouch and completes sealing and cutting automatically. The integrated process reduces manual intervention and helps standardize pack appearance, especially when working with printed films that require accurate registration. By optimizing traction control and sealing structure, the equipment maintains stable bag length and tidy sealing lines, supporting continuous operation with consistent end results. Whether packaging free-flowing granules, fine powders, or liquid products (with the optional leak-proof line), it provides a practical balance of speed, accuracy, and sealing strength for routine production environments.
Product Features
Smooth, controlled film pulling: A variable-frequency motor crank bag-pulling structure with heat-sealed traction enables stable film transport and reliable bag length control, helping reduce slippage and improving overall forming consistency.
Strong, aesthetic horizontal sealing: The horizontal sealing width of 8–10mm improves seal strength and visual finish. Sealing patterns can be selected to match brand style and material behavior, including a diagonal mesh pattern (1mm spacing) or a straight pattern (2mm spacing).
Enhanced liquid sealing option: For liquid packaging, an optional 1mm horizontal sealing leak-proof line can be applied to reinforce sealing integrity where additional anti-leak protection is required.
Accurate printed-film registration: Equipped with a JULONG dual-color photoelectric eye, the system tracks color marks precisely, supporting stable alignment of seals and cuts on printed packaging film and reducing positional deviation.
Clean cutting performance: Cutting is supported by an independent cutter system and can be configured as flat cut or serrated cut. A 3mm spacing between cutters helps deliver consistent separation and neat finished edges.
PLC-driven repeatability: PLC control simplifies parameter setting and improves process repeatability across shifts. It supports consistent operation for different products and bag specifications, enhancing day-to-day production stability.
Hygienic, corrosion-resistant build: The stainless-steel structure is suitable for applications where cleanliness and durability matter, offering improved resistance to corrosion and making it a practical choice for food, chemical, and daily-use product environments.
Productivity-focused output: Typical production speed is 20–40 bags per minute, depending on product characteristics, film type, and bag dimensions. Measurement accuracy is rated at ±1–10% (subject to packaging material and fill quantity), providing adaptability for varied dosing conditions.
Technical Specifications
| Item | Specification |
|---|---|
| Product Name | Back Sealing Strip Packaging Machine |
| Type | Automatic |
| Machine Material | Stainless Steel |
| Control System | PLC Control |
| Bag Pulling Method | Variable Frequency Motor Crank Structure, Heat-Sealed Bag Pulling |
| Optoelectronic Eye | JULONG Dual-Color Photoelectric |
| Packaging Type | Liquid, Powder, Particles |
| Measurement Accuracy | ±1–10% (Depending on Packaging Materials and Quantity) |
| Bag Making Range | Bag Width: 20–80mm; Bag Length: ≤150mm |
| Packaging Film Width | ≤180mm (Standard with 1 Set of Bag-Making Specifications) |
| Horizontal Sealing Width | 8–10mm; Diagonal Mesh Pattern (1mm spacing) or Straight Pattern (2mm spacing) |
| Horizontal Sealing Leak-Proof Line | 1mm (Only Applicable to Liquid Packaging) |
| Cutting Method | Flat Cut or Serrated Cut (Independent Cutter), 3mm Spacing Between Cutters |
| Speed | 20–40 bags/min (Depends on Product, Film, and Bag Size) |
| Machine Weight | 350kg |
| Machine Size | Customized |
| Warranty | 1 Year |
Product Application Areas
This machine is suitable for back-sealed poly-bag packaging in a wide range of production scenarios. It is commonly applied to granular materials such as small pellets and free-flowing particles, powdered products including fine and flour-like materials, and liquid products when the leak-proof sealing line option is selected. Typical industries include food ingredients and additives, daily chemical goods, and general industrial consumables that require consistent pouch forming, strong horizontal seals, and reliable cutting performance. With customizable bag sizing and dependable photoelectric tracking for printed films, it is well suited for production lines seeking efficient, repeatable sachet packaging with stable quality output.
