ZSYAN Three-Sided Sealing Machine: High-Speed Sachet Packaging Solutions
Introduction
Three-sided sealing machines are the backbone of sachet packaging across the food, beverage, and consumer goods industries. From single-serve coffee packets to condiment samples, these machines deliver professional, leak-proof packaging at speeds exceeding 100 bags per minute. ZSYAN (Shuangyan Intelligent Equipment) manufactures high-speed three-sided sealing machines that combine precision engineering with reliable performance, trusted by businesses in over 30 countries.
This guide explains everything about ZSYAN's three-sided sealing machine series, helping you choose the optimal solution for your sachet packaging needs.
What is a Three-Sided Sealing Machine?
A three-sided sealing machine creates sealed packets by sealing three edges of a film tube, leaving the fourth edge open for filling. After filling, the fourth seal is created, completing the sachet. This format produces the classic flat sachet or pillow bag familiar in retail environments worldwide.
Key Advantages of Three-Sided Seal Sachets
Cost-Effective: Uses minimal film material compared to four-side seal or stand-up pouch formats
High Speed: Can produce 60-100+ sachets per minute on a single lane
Versatile: Handles powders, liquids, granules, and solids
Professional Appearance: Clean sealed edges with optional decorative features (zipper, tear notch, hang hole)
Space Efficient: Compact machine footprint for small to medium production lines
Wide Film Compatibility: Works with PET/PE, paper/PE, aluminum foil laminates, and biodegradable films
ZSYAN Three-Sided Sealing Machine Series
Standard Three-Sided Sealing Machine
The workhorse of sachet packaging, ideal for medium-volume production across multiple industries.
Technical Specifications:
Speed: 60-100 bags per minute
Bag Size Range: Width 20-120mm, Length 30-150mm
Filling System: Auger filler (powders), piston filler (liquids), volumetric cup (granules)
Film Thickness: 40-120 microns
Sealing Style: Back seal or three-side seal
Control: PLC with 7-inch touch screen
Power: 220V/50Hz, 2.5kW
Key Features:
Auto photoelectric tracking for print registration within ±0.5mm
Independent heating zone control for each sealing station
Servo-driven film feeding for precise bag length
Multiple sealing styles: flat, pillow, gusseted
Option for zipper, tear notch, and hang hole punching
Ideal Applications:
Instant drink mixes (coffee, tea, cocoa)
Single-serve condiment packets (ketchup, soy sauce, mustard)
Seasoning and spice samples
Shampoo and detergent sachets
Pharmaceutical sachets
High-Speed Three-Sided Sealing Machine
Upgraded model for high-volume production environments requiring maximum output.
Technical Specifications:
Speed: 80-120 bags per minute
Bag Size Range: Width 30-150mm, Length 40-200mm
Weighing System: Multi-head weigher compatible (for granular products)
Number of Lanes: Single or dual lane configuration
Film Width: Up to 400mm (dual lane)
Key Features:
Reinforced frame for high-speed stability
Enhanced cooling system for faster seal setting
Automatic defect detection and rejection
Production data logging and reporting
Quick changeover system (<15 minutes)
Ideal Applications:
Large-scale beverage powder production
Mass-market condiment sachets
Institutional food service packaging
High-volume pharmaceutical sachets
Multi-Function Three-Sided Sealing Machine
Advanced model with interchangeable tooling for multiple bag formats without manual reconfiguration.
Technical Specifications:
Formats: Back seal, three-side seal, four-side seal, pillow bag, gusseted pouch
Speed: 40-80 bags per minute (format-dependent)
Tooling Change: Quick-release system, no tools required
Special Features: Window patching, spout attachment, valve integration
Key Features:
One-button format switching via PLC
Interchangeable forming tube and sealing jaws
Automatic parameter adjustment for each format
Camera inspection system option
Integrated checkweigher connection
Ideal Applications:
Multi-product manufacturers
Contract packers serving multiple brands
Products requiring different bag formats
R&D and sample production
How Three-Sided Sealing Works
Step 1: Film Unwinding
The roll stock film is mounted on the unwinder and threaded through the film transport system. Tension rollers maintain consistent film tension throughout the process.
Step 2: Tube Formation
The flat film is wrapped around the forming tube, creating a continuous film tube. The longitudinal seam is pre-sealed by heated rollers before the transverse sealing stations.
Step 3: Transverse Sealing
The first transverse sealing jaw closes across the film tube, creating the bottom seal of the first sachet. The film advances, and subsequent jaws create alternating top and bottom seals.
Step 4: Filling
As the sealed pockets move past the filling station, the auger, piston, or volumetric filler deposits the product into each pocket. Filling occurs while the machine is momentarily stationary or at reduced speed.
Step 5: Final Sealing and Cutting
The final transverse seal is created, and a cutting blade separates individual sachets. Completed sachets discharge onto a conveyor for collection or case packing.
Choosing the Right Three-Sided Sealing Machine
Factor 1: Product Type
| Product Type | Recommended Filling System |
|---|
| Powders (coffee, spices) | Auger filler with dust extraction |
| Liquids (sauces, shampoo) | Piston filler with drip-catching nozzle |
| Granules (nuts, candy) | Volumetric cup or multi-head weigher |
| Solids (tablets, samples) | Drop-from-height or vibratory feeder |
Factor 2: Production Volume
| Daily Output | Recommended Model |
|---|
| Under 50,000 sachets | Standard three-sided sealing machine |
| 50,000-200,000 sachets | High-speed model |
| Over 200,000 sachets | Dual-lane high-speed model |
Factor 3: Special Requirements
Window patching: Multi-function model with patching attachment
Zipper integration: High-speed model with zipper applicator
Hang hole punching: All models support hang hole option
Biodegradable film: Standard model with adjusted temperature settings
Investment and ROI Analysis
Cost Comparison
| Cost Factor | Manual Sachet Packing | Semi-Auto Machine | ZSYAN Fully Automated |
|---|
| Labor (per shift) | 8 operators | 3 operators | 1 operator |
| Output (sachets/day) | 500 | 10,000 | 50,000-150,000 |
| Seal Quality | Inconsistent | Good | Professional |
| Film Waste | High (10-15%) | Medium (3-5%) | Low (1-2%) |
| Payback Period | N/A | 6-10 months | 4-8 months |
Frequently Asked Questions
Q1: What is the typical lead time for a ZSYAN three-sided sealing machine?
A: Standard machines ship within 20-30 days. Custom configurations may take 35-45 days.
Q2: Can the machine handle biodegradable or compostable films?
A: Yes, ZSYAN machines can process biodegradable films. Temperature and speed settings are adjusted via the PLC control panel for optimal sealing.
Q3: What sachet sizes can the machine produce?
A: Standard models produce sachets from 20mm x 30mm to 150mm x 200mm. Custom sizes are achievable with forming tube changes.
Q4: Does the machine support automatic counting and bundling?
A: Yes, ZSYAN machines can be integrated with automatic counters, bundlers, and carton formers for complete line automation.
Q5: What certifications does ZSYAN hold?
A: CE marking (EU Machinery Directive), ISO 9001 quality management, and FDA-compliant material certifications.
Q6: How does ZSYAN handle spare parts shipping?
A: Standard spare parts are shipped via DHL/FedEx express (3-5 days worldwide).
Q7: Is training provided with the machine?
A: Yes. Comprehensive operator training via video call before shipment. On-site training available.
Q8: What is the expected lifespan of a ZSYAN three-sided sealing machine?
A: With proper maintenance, 10-15 years operational lifespan. Major components last 15+ years.
Getting Started
Share Your Requirements: Product type, sachet size, target speed
Receive Recommendation: Machine configuration and quotation
Test Your Product: Free sample testing at our facility
Confirm Order: Finalize specifications and production schedule
Production & Shipping: Build, test, and ship with full documentation
Contact ZSYAN:
