Knowledge

Installing a fully automatic packing machine as a single piece of equipment is straightforward. Planning a production line — where the automatic packer is part of a larger system including upstream product handling, inline weighing and inspection, and downstream packaging and palletizing — requires systematic planning that most first-time buyers underestimate. A poorly planned production line creates bottlenecks where equipment designed for 1,200 bags/hour is effectively throttled to 600 bags/hour because upstream or downstream processes cannot keep pace. This guide covers the key elements of production line planning for coffee and tea packaging facilities.

The Five Zones of a Coffee Packaging Production Line

Zone 1: Product Intake and Pre-Processing

Before product reaches the packing machine, it typically passes through one or more pre-processing steps:

• Roasted coffee: typically cooled, rested (1–72 hours degassing), and may be ground and dosed before packaging

• Tea: may require blending, moisture monitoring, or size separation

• Powder products: may require de-agglomeration, sieving, or anti-caking treatment

The intake zone should be designed to buffer upstream process variability so the packing line can run at a consistent feed rate. A floor hopper or intermediate IBC (Intermediate Bulk Container) with a vibrating conveyor is a common solution for feeding powder or granule products to the filling machine at a controlled rate.

Zone 2: The Packing Machine

The packing machine is the rate-controlling step of the entire line. All other zones must be designed to match its throughput capacity. Key planning parameters:

• Machine footprint: typically 1.5 m × 2.0 m to 2.5 m × 4.0 m depending on automation level

• Access space: minimum 0.8 m clear on all sides for maintenance access

• Utility connections: compressed air (0.4–0.6 MPa, 200–500 L/min), power supply (single or 3-phase, 220 V or 380 V), nitrogen gas supply line if required

Zone 3: Inline Checkweigher

For retail distribution, an inline checkweigher immediately after the packing machine is standard industry practice. The checkweigher weighs every bag and rejects underweight or overweight units without stopping the production line.

• Throughput: checkweighers must match or exceed the packing machine's output speed

• Rejection mechanism: belt diverter or pusher arm automatically removes out-of-tolerance bags

• Data logging: modern checkweighers provide statistical process control (SPC) data on fill weight trends — a valuable quality management tool

Zone 4: Coding and Labeling

Best-before date coding, batch number printing, and retail barcode labeling are typically applied inline:

• Thermal transfer coder or laser coder: applied to the bag surface before or after sealing

• Label applicator: for bags that require an applied label rather than printed-on coding

Zone 5: Downstream Packaging and Output

Filled and coded bags must be transferred to their retail or shipping packaging format. Options include:

• Manual cartoning: an operator places bags into a display box or shipping carton

• Automatic cartoner: bags are automatically counted, grouped, and placed into cartons

• Palletizing: cartons are stacked on pallets, either manually or by a palletizing robot

For most mid-size coffee and tea operations, manual cartoning downstream of the automatic packing machine is the practical starting point — the cartoning manual labor requirement is much lower than the packaging manual labor requirement that was automated.

Utility and Infrastructure Planning

> Planning a coffee or tea packaging production line?

> Contact Tonchant Pack for a free production line layout consultation →

> We support full line planning from intake to output. Global installation support available.