Packaging

In the packaging and printing industry, woven bags and other flexible packaging materials require strict contamination control due to their wide range of end-use applications, including food, pharmaceuticals, and industrial chemicals. Final packaging materials and printed products must meet high safety and quality standards to ensure product integrity and customer confidence.

Foreign contaminants such as ferrous, copper, aluminum, stainless steel, as well as weight deviations, can affect product performance, damage brand reputation, and even pose potential safety risks. Our advanced inspection and weighing systems are specifically designed to address the unique challenges of the packaging and printing industry — from raw material inspection to final product packaging. By detecting metal contaminants, verifying product consistency, and ensuring accurate weight control, our solutions help manufacturers improve safety, production efficiency, and compliance with industry standards.

Primary Sources of Metal Contamination:

1.Raw material impurities: Polypropylene pellets or recycled plastics may contain metal shavings, screws, or wire fragments from processing equipment wear.

2.Production-line hazards: Degraded parts from extruders or looms (e.g., bearing debris, broken needles) contaminating woven fabric.

Consequences of Undetected Metal:

Product integrity: Metal in food/medical-grading packaging (e.g., flour or fertilizer bags) may taint contents, triggering consumer lawsuits or recalls.

Customer penalties: Contaminants jamming client’s filling lines, resulting in breach-of-contact claims.

Reputational damage: Viral complaints on social media eroding brand equity.

Our solution: End-to-end metal detection systems to cut quality risks, reduce liability costs, and secure your market position.

In the packaging industry, automated checkweighers play a critical role in manufacturing cartons, corrugated boxes, and food pouches by delivering:

1.Cost & Material Optimization

Ensures per-unit weight accuracy, avoiding overages (excessive freight costs) or underweight (non-compliance penalties).

Monitors paper grammage to prevent underfilling (quality risks) or overfilling (material waste).

2.Production Process Control

Detects real-time anomalies like excessive glue application or moisture-affected board weight, enabling immediate corrections.

3.Quantity Assurance

Verifies multi-piece bundles (e.g., bags per bag) to eliminate missing/extra items, ensuring compliance with labeling.

We have multiple models of checkweighers available.

Dongguan Coso Electronic Tech Co., Ltd.