Introduction
As the global demand for high-quality pet food grows, manufacturers are increasingly seeking packaging equipment that is accurate, hygienic, flexible, and compatible with multiple bag styles. This case study highlights how HONGDI Machine provided a fully customized dog food packaging solution for a pet food producer in France, enabling them to pack multiple bag formats and weight ranges on a single, efficient production line.
Client Background
The client is a well-established pet food manufacturer in France, producing premium dog food for domestic and European markets. Their packaging requirements were highly diverse:
- Multiple bag styles, especially three types of zipper bags
- Two weight ranges:
- Small packs: 0.5–1.5 kg
- Large packs: 3–10 kg
- High-accuracy weighing for pet food
- Metal detection to prevent foreign contamination
- Reject system to automatically remove inaccurate or contaminated packs
- Preferably one machine that can accommodate as many formats as possible
These requirements demanded a tailored engineering and packaging solution.
Understanding the Requirements
Our technical team held several rounds of communication with the customer to clarify:
- Bag dimensions, zipper types, materials, and supplier options
- Product characteristics (dog food pellet size, oil content, flowability)
- Required production capacity for both small and large bags
- Metal detection sensitivity level
- Reject mechanism, weight checking standard, and line layout
- Whether the customer preferred to outsource bag customization to us
By fully understanding these inputs, we proposed two targeted packaging solutions.
HONGDI Customized Solutions
Solution 1: 14-Head Multihead Weigher + 8-Station Rotary Premade Bag Packing Machine
Recommended for 0.5–1.5 kg zipper bags.
Features:
- High precision for small to medium weights
- Compatible with multiple zipper bag styles
- Stable 8-station rotary system
- Metal detector + checkweigher integration
- Auto-reject for underweight / overweight bags
- Ideal for premium retail packaging
Why suitable?
Because the French client needed flexibility for three zipper bag styles, the rotary 8-station system offered the best balance between automation speed and bag compatibility.
Solution 2: Double-Head Weigher + Single-Station Premade Bag Packing Machine
Recommended for 3–10 kg large dog food bags.
Features:
- Strong load-bearing structure for big bags
- Large opening, suitable for 3–10 kg
- Double-head scale ensures consistent accuracy
- Simplified operation for high-volume filling
- Easy to switch different large bag sizes
Why suitable?
Large-capacity bags require a more stable, slower but stronger filling system. The single-station format keeps operation safe and efficient.
On-Site Visit & Engineering Confirmation
The client visited HONGDI’s factory in China to inspect both machine types in person.
During the visit, we:
- Demonstrated machine operation
- Checked compatibility with sample zipper bags
- Fine-tuned filling spout sizes
- Reviewed conveyor height, bag support options, and sealing temperature
- Discussed metal detector sensitivity calibration
- Finalized the layout of the checkweigher + reject system
- Confirmed bag customization options
After detailed discussions and machine testing, the customer fully approved the final proposal.
Final Solution Delivered
The customer confirmed a two-machine solution, each optimized for a specific weight range:
✔ Small bags (0.5–1.5 kg)
14-Head Weigher + 8-Station Rotary Bagger
with Metal Detector + Checkweigher + Reject System
✔ Large bags (3–10 kg)
Double-Head Weigher + Single-Station Bagger
with Metal Detection & Automatic Reject
✔ Additional services
- Assistance in custom zipper bag sourcing
- Technical drawings for packaging line layout
- English manuals & remote support
- Quality testing videos before shipment
Results & Customer Benefits
1. One integrated system for multiple zipper bags
All three zipper bag styles can be packed with smooth bag feeding and stable sealing.
2. Full weight accuracy & contamination control
The system includes:
- Multihead weigher or double-head weigher
- Metal detector
- Checkweigher
- Reject conveyor
3. Higher output & consistent quality
The customer significantly improved packing efficiency while maintaining European-grade hygiene standards.
4. Smooth operation for both small and large bags
Two machines, but one unified workflow.
5. Reliable export-ready equipment
All machines were tested and packed for export, meeting CE standards.
Conclusion
This project demonstrates HONGDI’s capability to provide tailor-made pet food packaging lines that meet strict European production standards. By offering flexible bag compatibility, precise weighing, metal detection, and turnkey system integration, we helped the French client upgrade their entire dog food packaging process.
If you need a custom dog food packaging machine or pet food production line, our engineering team is ready to design the right solution based on your material, bag type, and output goals.