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Automatic Liquid Vertical Form Fill Seal Machine Series

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I. Product Overview

  • Product Category: Vertical Form Fill Seal Machine for Liquid / Automatic Bag-Making Filling and Sealing Machine
  • Application Scenarios: Widely used for standalone automated packaging of small sachets of purified water, mineral water, milk, soybean milk, juice, vinegar, soy sauce, liquid seasonings, and other low-viscosity liquid products.
  • Core Functions:
  • Automatic Roll-Film Forming: Automatically draws and rolls flat packaging film into a tube shape, integrating vertical and horizontal heat sealing.
  • High-Precision Metering & Filling: Provides accurate volumetric liquid filling tailored to different models.
  • Intelligent Control & Registration: Standard models are economical and practical, while photoelectric models support precise film pattern alignment and step-motor film drawing.
  • Date & Batch Coding: Equipped with a standard steel-stamp coding function, with an optional ribbon coding machine to meet clear production date printing needs.
  • Hygiene & Safety Protection: Optional UV ultraviolet sterilization system for real-time film sterilization, ensuring the hygiene safety of food and drinking water packaging.

II. Core Advantages

  1. High Automation & Continuous Operation
  2. Integrates automated bag-making, quantitative metering, filling, sealing, batch printing, cutting, and counting into a single process, significantly reducing labor costs and boosting production efficiency.
  3. Flexible Model Matching
  4. Offers the SJ-1000 and SJ-2000 economic standard series, as well as the SJZF-1000 and SJZF-2000 photoelectric registration series, fulfilling precise choices for different filling capacities (50ml-1000ml) and film material compatibility.
  5. Photoelectric Alignment & Stepper Drive (Exclusive to SJZF Series)
  6. The SJZF series features a photoelectric sensor and stepping motor film-drawing system, ensuring every finished sachet aligns precisely with the printed pattern to eliminate misalignment and enhance visual appeal, while supporting both single-layer and composite films.
  7. Versatile Coding & Sanitary Sterilization Expansion
  8. Comes standard with steel-stamp coding and can be upgraded to a ribbon coding machine on request; supports optional UV germicidal lamps to comprehensively secure hygiene standards for liquid food and beverage packaging.
  9. Economical, Durable, & High ROI
  10. Features a compact footprint, stable operation, and easy maintenance, making it an ideal cost-effective choice for startup and small-to-medium liquid packaging enterprises.

III. Technical Specifications

Model SJ-1000 SJ-2000 SJZF-1000 SJZF-2000
Optional material liquid liquid liquid liquid
Bag-making length 50-150mm 50-250mm 50-150mm 50-250mm
Bag-making width 40-150mm 40-175mm 40-150mm 45-175mm
Packing film width 100-320mm 100-380mm 100-320mm 150-380mm
Filling range 50-500ml 200-1000ml 50-500ml 200-1000ml
Speed 2000-2200 bags/h 1100-1300 pcs/h 1100-1300 bags/h 1100-1300 bags/h
Power 1.6kw 2.5kw 2.1kw 2.5kw
Overall dimension 850×940×1860mm 1150×910×2050mm 1040×910×1860mm 1050×850×2050mm
Weight 275kg 380kg 270kg 380kg
Applicable material of the film Single-layer film Single-layer film Single-layer film ; Composite film Single-layer film ; Composite film

IV. Sales Recommendations & FAQ

Sales Recommendations

  • How to choose between the SJ Series and SJZF Series?
  • If your packaging film is plain color or single-layer film without printing alignment requirements, and you pursue ultimate cost-effectiveness, the standard SJ-1000 or SJ-2000 is recommended.
  • If your packaging film features exquisite brand logos or patterns requiring uniform image placement on every sachet, or if you plan to use composite film, choosing the SJZF-1000 or SJZF-2000 equipped with a photoelectric sensor and stepping motor is strongly recommended.
  • How to choose between the 1000 and 2000 Models?
  • For package volumes between 50ml and 500ml with high-speed production demands (e.g., water sachets, small milk pouches), choose the 1000 model.
  • For larger capacity requirements between 200ml and 1000ml, choose the 2000 model.

Frequently Asked Questions (FAQ)

  • Q1: What types of packing film can these machines use?
  • A1: The SJ series works for single-layer PE film only; the SJZF series supports both single-layer film and various composite films.
  • Q2: Does the machine include a date coding function?
  • A2: Yes, all models come standard with a steel-stamp coding function for embossing production dates or batch numbers. Customers can also request an upgrade to a ribbon coding machine.
  • Q3: How is the liquid filling accuracy ensured?
  • A3: The machine adopts mature pump-feeding or gravity metering systems combined with precise sealing and cutting controls, ensuring steady and compliant volume per sachet.

V. English Marketing Video

  • Watch the video demonstration here: https://youtu.be/Pgh48RqS9XQ?si=tznI77FYilejINRv

VI. Workflow

  1. Film Unwinding: Mount the packaging roll film onto the machine holder, and feed the film smoothly through guide rollers.
  2. UV Sterilization (Optional): Turn on the optional UV germicidal lamp for real-time irradiation and sterilization of the film surface.
  3. Film Drawing & Registration: The film-drawing mechanism (adopting a stepping motor and photoelectric eye on the SJZF series) accurately pulls and positions the film into the bag former.
  4. Vertical Sealing: The film is formed into a tube shape by the former, and the vertical sealer heats and seals the overlapping edge.
  5. Liquid Filling: Material is injected through the filling pipe into the bottom-sealed film tube.
  6. Horizontal Sealing & Coding: The horizontal sealing mold heat-seals the top of the sachet, while the steel-stamp or ribbon coder imprints the batch number.
  7. Cutting & Output: The cutter cuts and separates the sealed packaging bags, and finished sachets slide out automatically for collection.

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