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Film and Foil

Web Metal Detector

 

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Materials: Plastic film, foil, paper, textiles, non-metallic web materials
Detects: Ferrous, non-ferrous, and stainless steel
Applications
Film and foil converting, packaging, printing, laminating, and coating lines
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Under-Belt Metal Detectors

Bunting Web Metal Detectors provide continuous, high-sensitivity inspection of thin, non-metallic materials such as plastic film, foil, paper, and textiles. Installed directly in-line, they detect ferrous, non-ferrous, and stainless steel contaminants without interrupting production. Ideal for packaging, printing, laminating, and film converting, these systems protect rollers, slitters, and downstream equipment from damage while ensuring consistent product quality.

Bunting Web Metal Detectors are designed for continuous inspection of thin, non-metallic web materials such as plastic film, foil, paper, textiles, and laminates. Installed in-line on film, foil, or web processing equipment, they provide precise detection of ferrous, non-ferrous, and stainless steel contaminants before they can damage rollers, slitters, or downstream converting machinery.

With their slim, modular design, Web Metal Detectors integrate easily into both new and existing production lines. They monitor the entire web width in real time, ensuring full-surface coverage without interrupting product flow. Adjustable sensitivity and advanced signal processing deliver reliable, high-speed performance even on wide or fast-moving webs.

By preventing metal contamination, Web Metal Detectors protect valuable equipment, maintain consistent product quality, and safeguard brand reputation. Their accuracy and repeatability make them an essential part of quality assurance programs across packaging, film converting, and laminating operations, helping manufacturers reduce waste, avoid customer complaints, and meet strict industry standards.

 

 

High-Sensitivity Metal Detection
Detects ferrous, non-ferrous, and stainless steel contaminants in film, foil, paper, textile, and other web-based materials.

Continuous Inline Inspection
Monitors the entire web width in real time without interrupting product flow, ensuring complete inspection across every roll.

Protects Equipment and Brand Reputation
Prevents damage to slitters, laminators, and rollers while maintaining consistent product quality and protecting brand trust.

Supports Quality Assurance Programs
Delivers reliable, repeatable detection performance that helps meet strict QA and process control standards.

Compact, Retrofit-Friendly Design
Slim, modular construction fits easily into both new and existing converting, printing, or laminating lines.

Customizable Sensitivity and Calibration
Allows operators to fine-tune detection performance for different web thicknesses, material types, and line speeds.

Low-Maintenance Reliability
Built for continuous operation in high-speed production environments with minimal service requirements.

Web Metal Detectors are used in industries where thin, continuous materials such as film, foil, paper, and textiles are processed, converted, or finished. They help manufacturers prevent costly downtime, ensure consistent product quality, and protect brand reputation.

Film and Foil Converting
Used in plastic film, aluminum foil, and laminate production to detect metal contaminants that can cause surface defects or damage downstream equipment.

Printing and Laminating Lines
Installed before slitters or coaters to identify contaminants early in the process, preventing rework, waste, and customer complaints.

Paper and Textile Manufacturing
Inspect paper sheets, fiber webs, and nonwoven fabrics to safeguard cutting and winding systems from metal contamination.

Packaging and Flexible Materials
Ensures high-quality, contaminant-free film and foil used in food, pharmaceutical, and consumer packaging applications.

Recycling and Recovered Materials
Applied in recycling processes where web-based films and fibers are reprocessed, ensuring metal-free output that meets quality and safety standards.

By detecting contaminants early, Web Metal Detectors strengthen quality assurance programs, extend equipment life, and protect both production efficiency and brand integrity.

Web Metal Detectors are installed in-line with the moving web or sheet material, providing continuous inspection throughout production. As the web passes through the detection coil, the system scans for ferrous, non-ferrous, and stainless steel contaminants across the full material width.

When metal is detected, the coil generates a signal that is processed by the control unit. The system can alert operators, mark the contaminated area, or stop the line to prevent the defect from reaching downstream processes.

Designed for real-time monitoring, Web Metal Detectors deliver precise, high-speed detection without disrupting production. By identifying contamination before it reaches slitting, coating, or packaging stages, they help prevent waste, maintain consistent quality, and support brand protection through reliable, verifiable inspection.

FAQ's

What is a Web Metal Detector?

A Web Metal Detector is an inline inspection system used to detect metal contamination in thin, continuous materials such as plastic film, foil, paper, and textiles. Installed directly on converting, laminating, or printing lines, it scans the entire web width to identify ferrous, non-ferrous, and stainless steel contaminants before they can damage downstream equipment or affect product quality.

How do Web Metal Detectors protect equipment?

By detecting even small pieces of metal within the web, these systems prevent contaminants from damaging rollers, slitters, laminators, and coating machines. This helps extend equipment life, reduce maintenance costs, and minimize downtime.

How do Web Metal Detectors improve quality assurance?

They provide consistent, high-sensitivity detection that ensures each roll or web is free from metal contamination. This verification helps manufacturers maintain strict QA standards, reduce customer complaints, and protect brand reputation through reliable, documented inspection.

What materials can Web Metal Detectors inspect?

They are suitable for inspecting plastic film, aluminum foil, paper, nonwoven fabrics, textiles, laminates, and coated materials. Their sensitivity can be adjusted to suit different material types, web thicknesses, and production speeds.

Can Web Metal Detectors be integrated into existing production lines?

Yes. Web Metal Detectors feature slim, modular construction that allows easy integration into both new and existing converting, printing, or laminating lines without major modifications.

What happens when a contaminant is detected?

When metal is detected, the system sends a signal to the control unit, which can activate an alarm, mark the contaminated section, or stop the line. This enables precise removal of the affected material before further processing.

Are Web Metal Detectors suitable for high-speed operations?

Yes. They are engineered for continuous, high-speed inspection and can handle fast-moving webs without sacrificing accuracy or sensitivity.

How do Web Metal Detectors support brand protection? By preventing metal-contaminated material from reaching finished rolls or packaging, they ensure consistent product quality and compliance with customer specifications. This protects the manufacturer’s brand reputation and strengthens trust with end users and customers.

Application Photos

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