Fanchi-tech Metal Detector & Checkweigher Integrated Machine: All-in-One Safety & Precision for Snack & Food Packaging
For manufacturers of snack foods, packaged meals, and consumer goods, ensuring both metal contamination safety and weight accuracy compliance is a dual challenge. Separate metal detectors and checkweighers take up valuable production space, slow down line speeds, and create data silos. ThaiSnack Co., Ltd., a leading producer of premium nut mixes and crispy snacks in Thailand, turned to Shanghai Fanchi-tech Machinery Co., Ltd. to solve its dual inspection challenges. By deploying our Metal Detector & Checkweigher Integrated Machine, ThaiSnack streamlined its production lines, eliminated contamination and weight variation risks, and secured long-term compliance with Thai FDA and EU food safety standards.
The Challenge: Dual Inspection Bottlenecks & Space Constraints
ThaiSnack Co., Ltd. produces over 150,000 packaged snack items daily, including 80g nut mix pouches, 100g crispy chip bags, and 120g dried fruit packs. In early 2025, two critical issues threatened its business:
- A 0.7mm stainless-steel fragment from a packaging blade was found in a nut mix pouch, triggering a regional recall that cost THB 180,000 in direct expenses.
- A batch of 80g nut packs was found to have an average underfill of 2g, resulting in a Thai FDA warning and temporary production suspension.
The company’s legacy separate inspection systems exposed fatal flaws:
- Space Waste: Two standalone machines (metal detector + checkweigher) occupied 4 meters of production line length, limiting expansion for new SKUs.
- Production Slowdown: Products had to pass through two machines sequentially, slowing line speed by 28% during peak demand.
- Data Silos: Metal detection and weight data were stored in separate systems, making it impossible to trace full batch history for audits.
- High False Rejects: Unstable conveying between machines caused frequent tipping of lightweight snack pouches, leading to a 14% combined false reject rate—wasting 21,000 qualified items weekly.
- Hygiene Burden: Cleaning two separate machines took 40% more time, creating bacterial growth risks and failing BRCGS audits.
“Our snacks are loved across Southeast Asia, but our outdated dual inspection system was putting our brand and compliance at risk,” says Nara Srisuk, Operations Director at ThaiSnack Co., Ltd. “We needed an all-in-one solution that could detect metal and check weight in one pass, save space, and keep our lines running fast.”
The Solution: Fanchi-tech Integrated Metal Detector & Checkweigher
After evaluating 8 competitors, ThaiSnack selected the Fanchi-tech Metal Detector & Checkweigher Integrated Machine for its space-saving design, dual-function precision, and food-grade construction. As shown in our factory photos, the integrated machine features a 304 stainless steel frame, combined metal detection + checkweighing modules, three-stage white conveyor belt (infeed, inspection, outfeed), transparent safety guard, intelligent touch-screen control panel, and pneumatic reject mechanism—all engineered to handle snack and food packaging lines in one compact footprint.
1. All-in-One Inspection: Metal Detection + Weight Check in One Pass
The integrated machine combines high-sensitivity metal detection and precision checkweighing into a single unit, eliminating the need for two separate machines:
- Metal Detection Precision: Detects ferrous (≥0.6mm), non-ferrous (≥0.8mm), and stainless-steel (≥1.0mm) fragments, catching even tiny contaminants from processing equipment.
- Weight Check Accuracy: Delivers ±0.1g measurement tolerance for small 80–120g snack packs, identifying underfill/overfill deviations as small as 0.5g.
- Simultaneous Inspection: Products pass through the metal detector and checkweigher in one continuous flow, cutting line length by 50% and maintaining full production speed.
2. Stable Conveying & Gentle Reject for Lightweight Snacks
The machine’s conveyor system is optimized for fragile, lightweight snack pouches:
- Smooth Belt & Guide Rails: Prevents pouches from shifting or tipping during inspection, ensuring accurate readings and reducing false rejects.
- Dual Reject Mechanism: Pneumatic arms gently remove non-conforming pouches (either metal-contaminated or weight-inaccurate) from the line without damage, cutting waste by 35%.
- Compact Footprint: The integrated design fits into just 2 meters of production line, freeing up valuable floor space for new packaging lines.
3. Hygienic Design & Intelligent Data Management
Built for food safety, the machine’s crevice-free 304 stainless steel construction supports daily high-pressure washdowns:
- Easy-to-Clean Surfaces: Seamless stainless steel and removable belt eliminate hidden crevices, reducing cleaning time by 35%.
- Smart Operation: The touch-screen panel stores 60+ product presets, enabling SKU switching in 15 seconds (down from 20 minutes with manual calibration of two machines).
- Unified Data Traceability: Logs 1,000,000+ combined metal detection and weight records (with time-stamps and batch numbers) in one system, providing audit-ready traceability for Thai FDA and BRCGS audits.
The Outcome: Zero Recalls & 25% Faster Production
In the 11 months since deploying 5 integrated machines:
- 42 Critical Contaminants & Weight Deviations Intercepted: Detected 0.6–1.0mm metal fragments and 0.5g weight errors in one pass, preventing 3 potential recalls and THB 240,000 in estimated losses.
- 92% Reduction in False Rejects: Weekly pouch waste dropped from 21,000 to 1,680, saving THB 12,000 monthly in material costs.
- 25% Faster Production: Eliminating sequential two-machine inspection increased line speed, adding 15 hours of weekly capacity during peak holiday demand.
- 50% Space Savings: The compact integrated design freed up 10 meters of production line space, allowing ThaiSnack to launch 3 new snack SKUs.
- 100% Audit Compliance: Passed all Thai FDA and BRCGS inspections with zero non-conformities, securing a 5-year contract extension with its largest retail partner in Singapore.
“The Fanchi-tech integrated machine didn’t just fix our metal and weight problems—it redefined our production efficiency,” says Srisuk. “We now have one system that keeps our snacks safe, compliant, and our lines running faster than ever.”
Why Fanchi-tech’s Integrated Machine Leads in Food Inspection
For food and snack manufacturers, the Fanchi-tech Metal Detector & Checkweigher Integrated Machine delivers:
- Space Efficiency: All-in-one design cuts production line length by 50%, maximizing floor space.
- Dual Precision: Simultaneous metal detection and weight check ensures full safety and compliance in one pass.
- Hygienic Reliability: 304 stainless steel and washdown-ready construction meet strict food safety standards.
- Intelligent Operations: Fast SKU switching and unified data logging streamline audits and production.
Secure Your Production Lines Today
If you’re a food, snack, or consumer goods manufacturer facing space constraints, dual inspection bottlenecks, or compliance challenges, contact Kerry Wang to arrange a free virtual demo or on-site trial of the Fanchi-tech Metal Detector & Checkweigher Integrated Machine. We’ll test the unit with your specific products to validate performance for your line speed and SKU mix.
Shanghai Fanchi-tech Machinery Co., Ltd.
- Email: fanchitech@outlook.com
- Website: www.fanchitechnology.com
Post time: Mar-16-2026