The L50N New Small Vertical Liquid Three-Side Seal Packaging Machine is a compact, high-efficiency vertical form-fill-seal (VFFS) solution designed for precise small-dose sachet production. Powered by a PLC control system with a 7-inch touchscreen HMI, it supports bilingual operation, real-time alarm prompts, and self-diagnostic functions to simplify setup and daily running. A stepper-motor-driven film pulling system stabilizes bag length and registration, while PID temperature control delivers consistent sealing performance across different composite films. Built for food-grade environments, the machine integrates a rotary cutting structure and an “elephant trunk” forming device to achieve smooth bag shaping and clean, reliable cutting. Its modular sealing assembly enables quick conversion between three-side and four-side sealing formats, helping manufacturers respond faster to SKU changes while maintaining high output quality.
Product Features
Smart Control & Operator-Friendly Interface
Equipped with a PLC + 7-inch touchscreen, the system provides intuitive parameter setting, bilingual menus, fault prompts, and self-check functions. This reduces operator training time and supports stable production with fewer manual interventions.
Stable Film Feeding & Accurate Bag Length
The stepper motor bag-pulling structure ensures smooth film movement and repeatable pouch length control. Combined with photoelectric tracking, it helps maintain neat cutting positions and consistent package appearance during continuous operation.
Reliable Sealing with PID Temperature Regulation
Precision PID temperature control stabilizes sealing heat and improves repeatability, helping reduce weak seals, burn-through, and leakage risk. The modular sealing design also simplifies maintenance and extends service life.
Flexible Formats: Three-Side / Four-Side Seal Switching
The machine adopts a modular structure that supports fast conversion between three-side and four-side sealing. This flexibility is ideal for producers running multiple sachet styles with minimal downtime.
Clean Cutting & Efficient Bag Forming
A rotary cutter mechanism supports clean separation with optional flat or serrated cutting. The elephant trunk forming device improves film forming consistency, enabling smooth pouch shaping and more stable downstream sealing.
Hygienic, Durable, and Safety-Oriented Construction
All product-contact parts are made of 304 stainless steel, matched with a welded frame and brushed exterior for durability and easy cleaning. Acrylic protective covers with door detection switches enhance operator safety and support hygienic production standards for food, pharma, and daily chemical applications.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | L50N New Small Vertical Liquid Three-Side Seal Packaging Machine |
| Applicable Materials | Powders, liquids, granules, tablets, sauces (metering pump selected per product) |
| Metering Method | Mechanical piston pump (optional: magnetic pump, gear pump, high-pressure pump) |
| Filling Range | 1–50 ml (depending on bag specifications) |
| Metering Accuracy | ±1–3% |
| Packaging Speed | 25–50 packs/min |
| Max. Film Width | 170 mm |
| Bag Size Range | Width: 45–85 mm × Length: ≤120 mm |
| Sealing Type | Three-side seal / Four-side seal |
| Vertical Seal Width | 7 mm, straight pattern or grain pattern |
| Horizontal Seal Width | 9 mm, straight pattern or grain pattern |
| Cutting Method | Flat cut or serrated cut |
| Easy-Tear Option | Vertical seal with straight cut |
| Photoelectric Sensor | JULONG dual-color sensor |
| Pouch Pulling Method | Stepper motor control + vertical sealing and bag making wheel |
| Packaging Film | Composite materials |
| Power Supply | 220V / 50Hz, single phase, 1.5 kW |
Customization Options
| Item | Specification |
|---|---|
| Metering Device | Mechanical piston pump, magnetic pump, gear pump, high-pressure pump |
| Coding Method | Horizontal sealing steel type hot stamping, ribbon coding, or thermal transfer coding |
| Cutting Function | Electric rotary knife device with dot-shaped easy-tear feature |
| Optional Features | Changeable bag sizes, sealing types, and film width adjustment configurations |
Application Industries
This automatic sachet packaging machine is widely used in food and beverage production for powders, sauces, granules, tablets, and liquid products requiring hygienic and consistent small-dose packaging. It is also suitable for pharmaceutical, chemical, and cosmetic applications where stable sealing quality, accurate dosing, and efficient high-speed production are essential.
