Client application
Automatic bagging machine for powdered milk
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Context & customer constraints
A dairy manufacturer needed to modernise its packaging line. The old bagging machine no longer guaranteed the expected productivity or the required hygiene standards. The main constraints identified were:
- Insufficient speed, below production targets.
- Poor dust control, leading to health risks and material losses.
- Limited dosing accuracy, problematic for sensitive products such as lactose, milk powder and whey.
- Inability to integrate online quality controls.
Customer’s objective: to install a new automated line capable of filling up to 300 bags/hour while ensuring impeccable hygiene and optimal product safety.
Technical challenges
The project had to address several major challenges to ensure performance, hygiene and safety:
- Maintain high speeds with a constant flow rate.
- Ensure dosing accuracy of ±10 g on 25 kg bags.
- Integrate a CIP/NEP system for automatic cleaning.
- Drastically reduce dust emissions with centralised extraction.
- Ensure compliance with EHEDG standards and the ATEX dust zone directive.
Customer product
Powdered milk
Halpaq solution proposed
The solution selected is based on a CBM 1030 automatic bagging machine integrated into a complete control line and process security system:
The solution implemented includes:
- CBM 1030 station: up to 400 bags/hour, paper/PE/PP bags, with or without lining.
- Vertical screw feeder with 400 L hopper, integrated agitator and ±10 g accuracy.
- Bottom-up filling limiting dust and improving bag compactness.
- Fine dosing station for additional precision.
- Deaeration station with porous lances, ideal for densities of 400 to 770 kg/m³.
- Parallel heat seals with pre-cleaning of the sealing area.
- FTS marketing closure (Fold, Tape, Seal) for hermetic and hygienic packaging.
- Checkweigher with automatic rejection of bags outside tolerance (±40 g).
- Centralised suction (650 m³/h at 20 m/s) ensuring a clean working environment.
- Sampler and magnetic detection integrated for complete traceability.
Line operation
- Automatic bag feeding (400-bag magazine).
- Bottom-up opening and filling with gradual bag lifting.
- Controlled deaeration via porous lances.
- Hermetic sealing via FTS technology.
- Dynamic weight control with automatic rejection.
- Continuous dust extraction for a clean environment.
Results obtained
| Criterion | Before (old line) | After (Halpaq solution) |
|---|---|---|
| Cadence | 150–180 bags/hour | 300–400 bags/hour |
| Dosing accuracy | ±60 g | ±10 g |
| Hygiene & dust | Insufficient containment | Centralised vacuum system + NEP |
| Quality control | Manual and random | Dynamic, automatic rejection |
| Regulatory compliance | Partial | EHEDG + ATEX dust zone |
Benefits for the customer
- Doubling of production capacity.
- Increased dosing reliability, reducing material losses.
- Guaranteed health and safety thanks to dust containment and cleaning in place.
- Full regulatory compliance (EHEDG, ATEX).
- Reduced labour costs through automated controls
- Flexibility across multiple bag formats (400–950 mm length, 350–660 mm width).
Products handled
- Lactose
- Milk powder
- Whey
- Products sensitive to humidity, requiring hermetic packaging and uniform densification
A unique synergy between
HALPAQ and Palamatic
To meet these requirements, Palamatic Process designed and delivered a comprehensive solution combining HALPAQ technologies and process integration expertise:
| Parameter | Value |
|---|---|
| Cadence | 300–400 bags/hour |
| Bag format | 400–9500 mm x 350–660 mm |
| Dosing accuracy | ±10 g (25 kg bag) |
| Density of treated powders | 400–770 g/L |
| Centralised vacuum system | 650 m³/h at 20 m/s – Ø100 mm |
| Tolerance checkweigher | ±30 g |
| Cleaning | Integrated CIP/NEP |
The equipment used for this project
Equipment
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