Ground Coffee Packaging Machine (Coffee Powder Packaging Machine)

Ground coffee presents distinct packaging challenges due to its exceptionally high specific surface area, which causes rapid aromatic degradation and oxidation upon exposure to air. The material is also prone to airborne dust migration, electrostatic charge accumulation, and dust trapment within seal areas, which can compromise hermetic seal integrity.

Our Ground Coffee Packaging Equipment Solutions

Multi-Lane Stick Pack & 4-Side-Seal Sachet Packaging Machines

• End-Product Formats: Single-serve ground coffee sticks, micro-ground instant black coffee, and specialty steep bags (typically 2g to 15g).
• Machine Features & Technical Highlights:
  • Synchronized Multi-Lane Dosing: Configured with 4 to 12 packaging lanes, integrated with individual servo-driven multi-split auger tooling to guarantee dosing accuracy across every lane.
  • Ultra-High Throughput: Delivers high-speed output rates ranging from 150 to 400+ packs per minute per unit.
  • Tooling & Finish Customization: Rotary cross-cutting and longitudinal sealing assemblies can be tooled for micro-perforated easy-tear notches, clean flat cuts, or customized contoured/round-corner geometries.
• Target Applications: High-volume contract packaging, cold-brew single-serve sticks, office coffee service (OCS), and travel/on-the-go portion packs.

Core Engineering Modules of the Multi-Lane Ground Coffee Stick Pack Machine

Our multi-lane ground coffee stick pack machine integrates seven high-precision engineering subsystems to ensure hermetic seal integrity, consistent dosing accuracy, and high-speed uptime:

1. Multi-Lane Servo Auger Dosing System

• Independent / Linked Servo Drives: High-precision servo motors power the individual auger tooling across all lanes, paired with a continuous low-speed horizontal agitator in the hopper to break bridges and maintain uniform bulk density.
• Positive Shut-Off Nozzles: Each discharge tube features pneumatic cut-off valves (plungers) to eliminate stringing, powder dribble, and airborne particulate migration between dosing cycles.

2. Film Unwind, Web Guiding & In-Line Slitting Module

• Tension & Alignment Control: Servo-driven constant-tension unwind with an integrated ultrasonic or optical Edge Position Control (EPC) web guider prevents tracking skew.
• Precision Slitting Assembly: Heavy-duty alloy rotary slitting knives continuously shear the master web into calibrated, equal-width narrow strips with burr-free edges.

3. Multi-Lane Forming Tooling Assemblies

• Forming Collars: CNC-machined forming shoulders progressively wrap each slit web strip into a calibrated tubular geometry with tight dimensional consistency.
• Concentric Triple-Wall Drop Tubes: The integrated drop tube assembly houses the powder discharge passage, internal inert gas ($\text{N}_2$) flushing lines, and an annular dust-evacuation/de-aeration exhaust port.

4. Dual-Axis Servo Heat Sealing Module

• Longitudinal Sealing (Fin Seal): Independent PID temperature controllers regulate heated sealing blocks on each lane, compensating for local film thickness variations to produce uniform, leak-proof fin/lap seams.
• Cross-Sealing (End Seal): A heavy-duty servo reciprocating “box-motion” sealing jaw extends sealing dwell time under high contact pressure, ensuring airtight polymer fusion even through micro-layers of coffee dust.

5. Easy-Open Notching & Contoured Corner Die-Cutting Module

• Convenience Features: Configurable with mechanical punch dies or an in-line laser scribing unit to produce micro-perforated easy-tear notches.
• Die-Cut Shaping: Rotary or pneumatic male/female punch dies form ergonomic rounded corners, supported by a localized vacuum extraction trim-collection system for scrap disposal.

6. Static Elimination & Dust Extraction Unit

• Electrostatic Control: High-frequency ionizing air bars discharge static build-up on the packaging web prior to forming, preventing fine coffee grounds from clinging to the interior sealant film.
• Negative-Pressure Scavenging: Multi-point suction manifolds maintain slight negative pressure at the fill and seal zones to scavenge floating fines, guaranteeing seal surfaces remain dust-free.

7. In-Line Multi-Channel Checkweighing & Collating Outfeed

• Closed-Loop Control: A multi-lane dynamic checkweigher inspects every stick individually; weight variances trigger automated closed-loop servo feedback to micro-adjust single-auger step counts in real time.
• Defect Rejection & Cartoner Infeed: Defective packs are individually purged via dedicated high-speed air blast nozzles, while qualified stick packs are counted, grouped, and collated onto an indexing bucket conveyor for downstream cartoning.

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