The coffee sachet packaging system automates vertical pouch forming, volumetric or auger-screw dosing, hermetic heat sealing, and precision cutting for single-serve coffee products. Built with a 304 stainless steel framework and driven by independent servo-motor film pulling mechanisms, the machine maintains stable tension control to eliminate tracking drift at speeds reaching 80 packs per minute.
Technical Specifications
|
Parameter |
Specification |
|
Film Material |
Laminated film, PET/PE, paper/foil/PE, aluminum foil |
|
Sealing Temp |
120°C to 180°C |
|
Dosing Range |
2g to 50g |
|
Packing Speed |
30 to 80 packs/min |
|
Filling Accuracy |
± 1% |
|
Max Roll Width |
320mm |
|
Sachet Size |
Width: 30-150mm / Length: 50-160mm |
|
Electrical |
220V/380V, 50Hz/60Hz, 3-phase |
|
Power |
2.2 kW to 3.5 kW |
|
Pneumatic |
0.6 to 0.8 MPa (0.3 cubic meters per minute) |
Key Machine Features
Servo Film Pulling: Dual synchronous servo motors drive side-pull transport belts, maintaining registration mark accuracy within ± 0.5mm.
PID Temperature Control: Independent controllers monitor thermocouple sensors on sealing bars, holding thermal variance within ± 1°C.
Hygienic Framework: SUS304 stainless steel with mirror-polished internal welds prevents powder accumulation and simplifies washdown.
Modular PLC Interface: A 10-inch color touchscreen stores up to 50 operational recipes and records batch output and error codes.
Applications
Co-Packing Plants:
Integrates into automated cartoning lines for high-output retail portioning.
Roasting Facilities:
Deployed downstream from grinding and nitrogen-flushing units to seal fresh roasted fractions.
Hospitality Supply:
Produces institutional single-serve portions for airlines, hotels, and catering suppliers.
Sample Distribution:
Configured for rapid format changeovers to produce lightweight trial sachets.
Filling Characteristics
Anti-Dusting Shrouds: Enclosed funnel designs channel fine particles directly into the forming tube, preventing seal contamination.
Controlled Settling: Mechanical vibration units settle fluffy powders prior to jaw closure to eliminate trapped air.
Flow Consistency: Tapered auger screws maintain uniform mass flow rates and prevent bridging.
How the Machine Works
Unwinding & Tensioning: Film rolls mount on a pneumatic shaft with an edge-position control sensor and magnetic brake to maintain web tension.
Forming & Folding: Flat film passes over a stainless steel folding collar to form a continuous vertical tube.
Dosing & Drop: An internal auger screw or volumetric cup assembly dispenses a measured coffee dose synchronously with film descent.
Sealing & Cutoff: Pneumatic horizontal jaws execute transversal heat sealing and cooling, while an integrated blade severs the completed sachet.
Dosing Systems
Direct-Drive Auger: Closed-loop servo motor rotates exact revolution counts matched to optical encoder feedback.
Telescopic Cups: Interchangeable stainless steel measuring cups adjust telescopically for manual volume changes.
Quick-Release Hopper: Tool-free clamps allow the powder hopper, mixing paddle, and auger to detach within two minutes for sanitization.
Sachet Formats
Pillow Seal:
Standard 3-side or 4-side seal sachets formed continuously from a single flat web.
Stick Pack:
Narrow cylindrical single-lane or multi-lane packs optimized for narrow-neck bottles.
Dimensions:
Width 20mm to 150mm; Length 50mm to 180mm; Thickness 0.05mm to 0.12mm.
Customization Options
Nitrogen Flushing: Gas injection nozzles insert inert nitrogen to reduce residual oxygen levels below 2 percent.
Coding Integration: Direct thermal transfer printers or laser coders emboss lot numbers and expiration dates onto the seal area.
Multi-Lane Scaling: Upgradeable from single-lane to 2-lane, 4-lane, or 6-lane parallel output modules.
Tear-Notch Punching: Rotary or pneumatic notch units cut V-shaped or straight tear lines into the sachet margin.
Quality Control
Weld Testing: Pneumatic seal testing fixtures verify burst strength and peel force limits.
Electrical Safety: Wiring harnesses feature flame-retardant multi-core conduits and grounded chassis frames.
Traceability: Critical drive assemblies, PLC controllers, and valves source from certified industrial manufacturers.
Burn-In Testing: Every machine undergoes a 48-hour continuous dry-run endurance test and a 4-hour simulated material run.
Packaging & Delivery
Export Crating: Fumigation-free plywood crates lined with waterproof moisture-barrier membranes and desiccants.
Component Cushioning: Foam-molded brackets secure HMI touchscreens, optical sensors, and servo motors against transit shocks.
Documentation: Hardcopy electrical wiring schematics, pneumatic circuit diagrams, PLC parameter backup drives, and maintenance manuals.
FAQ
1.What film materials provide the best seal integrity?
Laminated structures combining PET, aluminum foil, and polyethylene deliver optimal moisture barrier performance and consistent thermal sealing.
2.How does the machine prevent coffee dust from interfering with the seal?
An enclosed drop tube combined with an adjustable pneumatic dwell timer prevents product fall during the jaw-closing phase.
3.What is the typical time required to change sachet width formats?
Switching the forming collar, adjusting guide rails, and recalibrating parameters takes 15 to 25 minutes using standard hand tools.
4.How is filling weight adjusted during production runs?
Operators input target weight adjustments directly into the 10-inch touchscreen interface to recalibrate auger rotation revolutions instantly.
5.What auxiliary equipment is required to operate the machine efficiently?
An external screw feeder or vacuum conveyor feeds bulk coffee automatically, alongside a clean compressed air supply delivering 0.6 MPa.
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