Engineered for continuous vertical form-fill-seal operations, this machine automatically measures, forms, fills, seals, and cuts narrow multi-lane stick packs for free-flowing crystalline salt with strict seal integrity and minimal downtime. Fabricated from food-grade stainless steel with mirror-polished contact surfaces to resist salt corrosion.
Technical Specifications
|
Parameter |
Specification |
|
Filling Range |
1 g to 20 g |
|
Film Width |
20 mm to 80 mm |
|
Stick Length |
50 mm to 150 mm |
|
Max Speed |
Up to 80 packs per lane per minute |
|
Power Supply |
3-phase, 380V, 3.5 kW |
|
Air Supply |
0.4 cubic meters per minute at 0.6 MPa |
|
Machine Weight |
650 kg |
Key Machine Features
Precision Tracking: Pneumatic edge-guiding sensors correct lateral web deviation automatically before forming.
Positive Seal Pressure: Pneumatically actuated jaws apply uniform vertical clamping force to eliminate leak channels.
Quick-Change Tooling: Tool-less collar removal system allows complete size conversion within 15 minutes.
Modular Drive: Independent servo motors control film feeding and cross-sealing mechanisms without mechanical backlash.
Applications
Retail Distribution: Forms single-serving portions for grocery shelves and household multipacks.
Food Service Portioning: Supplies precise gram-weight packages for restaurants and catering kits.
Travel Packaging: Packages individual units for airline meals and hospitality trays.
Product & Packing Characteristics
Edge Seal Configuration: Fin seal format providing a flat, neat longitudinal seam.
Cut-Off Profile: Straight cut with optional macro-perforations or serrated tear notches.
Material Compatibility: Heat-sealable laminated barrier films including PET/PE, OPP/PE, and paper-foil structures.
How the Machine Works
Web Unwinding:
Motorized reel stand feeds packaging film into the tension control dancer assembly.
Collar Shaping:
Flat film passes over a stainless steel folding shoulder to form a continuous vertical tube.
Longitudinal Sealing:
Heated vertical bar applies thermal pressure to close the back seam.
Volumetric Dosing:
Telescopic cup filler drops the pre-measured salt charge down the drop tube.
Cross Sealing:
Horizontal serrated jaws seal the top and bottom simultaneously while an integrated knife cuts the unit.
Filling & Dosing System
Volumetric Cup Mechanism: Adjustable telescopic stainless steel cups measure precise volumes based on crystal density.
Vibration Assist: Electromagnetic vibrator maintains uniform product compaction inside the feed hopper.
Anti-Drip Shutter: Mechanical gate closes instantly beneath the nozzle to prevent salt granules from entering the sealing zone.
Stick Pack Sizes & Formats
Standard Width Range:
25 mm, 30 mm, 35 mm, and 40 mm configurations.
Multi-Lane Options:
Available in 2, 4, 6, or 8 lanes to match downstream packaging requirements.
Dimension Tolerances:
Length accuracy controlled within plus or minus 0.5 mm via optical registration sensor.
Customization Options
Coding Integration: Direct thermal transfer printer or laser coder mounted inline for batch and date stamping.
Dust Extraction: Vacuum pickup hood positioned around the sealing area to remove airborne fine dust particles.
Static Elimination: Ionizing bars installed at the unwinding station to neutralize electrostatic charge on plastic films.
Checkweigher Feedback: Secondary dynamic weight sorting unit linked to the PLC to automatically reject out-of-tolerance packs.
Quality Control
Material Traceability: Structural components milled from certified corrosion-resistant 316L alloys with mill test reports.
Electrical Compliance: Control enclosures wired to industrial standards with IP65 washdown ingress protection.
Factory Acceptance Testing: Each machine runs continuously for 8 hours using actual client film and test media prior to crating.
Packaging & Delivery
Export Crating: Sealed inside vacuum barrier bags and secured within fumigated ISPM 15 wooden crates.
Internal Stabilization: Critical moving assemblies locked with rigid transit brackets to prevent ocean transit displacement.
Documentation Package: Complete electrical schematics, pneumatic diagrams, and spare parts manuals included inside the shipment.
FAQ
1.How does the machine prevent salt corrosion on internal parts?
All components in direct contact with salt utilize 316L stainless steel, and electrical enclosures feature IP65 washdown protection.
2.What is the typical changeover time for a different stick width?
Switching forming sets and adjustment guides takes approximately 15 minutes without hand tools.
3.Can the machine handle biodegradable packaging films?
Yes, PID temperature controllers allow precise thermal adjustment to accommodate compostable mono-materials and paper laminates.
4.How is packaging film tracking maintained at high speeds?
An automated edge position control sensor detects web drift and shifts the unwinding roll carriage laterally in real time.
5.What utilities are required to operate the machine?
Standard three-phase electrical power and a clean, dry compressed air supply delivering stable pressure at 0.6 MPa.
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