How a Large Tunnel X-Ray Inspection System Protects 25kg Powder Bag Exports
For ingredient manufacturers shipping 25kg bags of milk powder, whey protein, flour, starch and seasonings, one contamination incident can wipe out a year of export profits. A single glass shard or metal fragment found in a sealed bag triggers a recall, a customer audit failure, and a credibility problem that takes years to repair.
Manual inspection and conventional metal detectors were the old answer. They are not enough anymore. International buyers — especially in Europe, North America and the Middle East — now expect X-ray inspection as a standard line requirement, not an optional upgrade.
Why Powder Bags Need a Large Tunnel X-Ray System
A retail-pack X-ray machine is built for small boxes and pouches. It cannot handle a 25kg woven bag or a thick multi-wall paper sack. The product is too wide, too dense, and too heavy for a standard conveyor.
A large tunnel X-ray inspection machine is engineered for exactly this job. The Fanchi-tech FA-XIS8050 uses a wide, reinforced tunnel and a heavy-duty food-grade conveyor that carries full 25kg bags continuously without belt sag, vibration or image degradation.
Inside the sealed bag, the X-ray beam penetrates the powder layer and identifies contaminants that a metal detector simply cannot see:
- Ferrous and non-ferrous metal fragments
- Stainless steel wire and screen fragments
- Glass shards from broken filler components
- Stones and mineral grit
- Ceramic pieces
- High-density plastic and hard rubber
Because inspection happens after the bag is sealed, every single export bag is checked — no sampling, no human guesswork, no blind spots.
Which Products Run Best Through a Large Tunnel X-Ray?
The large tunnel design opens the door to product categories that small systems were never built for:
- Milk powder, whey powder, infant formula base powder in 20–25kg sacks
- Whey protein, plant protein and sports nutrition powder bags
- Wheat flour, corn flour, rice flour and baking premixes
- Modified starch, potato starch, food-grade starch
- Sugar, coffee powder, cocoa powder and seasoning powders
- Food additives, vitamin premixes and ingredient blends in fiber drums
- Dried fruits, nuts and grains in heavy bulk bags
- Frozen seafood and frozen meat in cartons and block packs
- Pet food in 10–20kg bags and bulk sacks
If your product weighs between 5kg and 25kg, comes in a thick or multi-layer package— a large tunnel X-ray system is the right tool.
Built for the Food Plant Floor, Not the Showroom
The FA-XIS8050 is not a laboratory instrument. It is built to run in a real food processing factory next to filling lines, sack sealers and palletizers.
- SUS304 stainless steel frame and cabinet — washdown-friendly construction for food hygiene zones
- Heavy-duty conveyor belt rated for continuous industrial loads
- Large touchscreen HMI with recipe storage for fast product changeovers
- Reject system integration — belt stop, air blast or pusher options
- Inspection image storage for traceability and customer audit evidence
- Line integration with existing filling, sealing and packaging equipment
Operators switch between milk powder recipe and flour recipe in seconds. Quality managers pull inspection records for a third-party audit in minutes, not hours.
Frequently Asked Questions (FAQ)
Can it really detect stainless steel inside a 25kg powder bag?
Yes. X-ray systems use density contrast, not magnetic field sensing. Stainless steel — the hardest contaminant for a metal detector — is reliably detected through sealed powder bags when the tunnel size and X-ray power are matched to the product.
Do we have to stop production to inspect every bag?
No. The system runs inline at production line speed. Every bag is checked as it leaves the filling line. No interruption, no manual handling, no sampling.
What if our bags come in different sizes?
The wide tunnel accommodates bag sizes from 5kg to 25kg. Operators select the stored recipe for each product. Conveyor width, tunnel height, reject timing and detection sensitivity are all recipe-driven.
Can this be integrated with our existing line?
Yes. The machine interfaces with standard filling and packaging equipment. We provide drawings, integration guidance and remote support during installation.
Is the X-ray radiation safe for the food product?
Yes. The X-ray dose used in food inspection systems is extremely low and does not make the product radioactive. This is a standard, widely accepted practice in the food industry. No changes to food chemistry, taste, nutrition or packaging occur.
Does it work with aluminum foil or metallized packaging?
Yes. Unlike metal detectors, X-ray systems can inspect products inside aluminum foil and metallized film because they use penetrating radiation rather than electromagnetic sensing. This is one of the biggest advantages over conventional metal detection.
What is the power requirement?
The standard system operates on 220V / 50Hz single-phase power, with options for 110V or 380V three-phase depending on the configuration. Exact power consumption depends on tunnel size and conveyor speed.
How long is the lead time?
Standard models typically ship within 4–6 weeks after order confirmation. Customized tunnel sizes or special reject systems may require 8–10 weeks. We will confirm the delivery schedule with your quotation.
Do you provide installation, training and warranty?
Yes. We provide remote installation guidance, on-site engineer support (on request), operator training, and a standard 12-month warranty covering parts and labor. Extended warranty options are available.
Can the tunnel size be customized?
Yes. Tunnel width and height, conveyor width, line height and reject mechanism can all be customized to match your product dimensions and production line layout. Send us your product size drawings for a tailored solution.
How does this compare to Mettler-Toledo or Anritsu systems?
Fanchi-tech provides comparable detection performance at a more competitive investment level, with faster lead times and direct factory support. We encourage you to send us a sample product for a side-by-side detection test — the images will speak for themselves.
What maintenance does the machine require?
Routine maintenance is simple: regular conveyor belt cleaning, lens/collimator inspection, and routine software updates. The system is designed for easy access for cleaning and service. We provide a maintenance manual and training on handover.
Why Export Manufacturers Choose Fanchi-tech
Shanghai Fanchi-tech Machinery Co., Ltd. designs and builds food inspection equipment for global food manufacturers. Our product range covers conveyor X-ray inspection systems, metal detectors, dynamic checkweighers and combination inspection lines — all engineered for the food, ingredient and packaging industries.
We work with powder producers, frozen food plants, ingredient suppliers and pet food manufacturers who need inspection equipment that performs on a real production line, not just on a showroom floor.
See It Run on Your Product
The fastest way to know if a large tunnel X-ray system works for your product is to test it. Send us a sample bag, and we will run a contamination detection test on your actual material and send back the inspection images.
Contact: Kerry
- Email: kerry@fanchitech.net
- Mobile / WhatsApp: +86 13917555254
- Website: https://www.fanchitechnology.com/
- YouTube: https://youtube.com/@fanchitech3323
Post time: Sep-22-2026