What is label verification?
Label verification is an inspection function that checks a label and its relevant visible features against configured acceptance criteria. On a production line, this inspection may cover label presence, position, print or code appearance. It then identifies products that require a separate reject or diversion response.
At a glance:
- Possible checks include label presence, label position, print appearance and code appearance, based on the configured inspection criteria.
- Barcode reading captures encoded data, while code verification checks code quality or expected content, and vision inspection covers broader visible criteria.
- Before labelling, handling can support spacing, orientation and stable presentation. After labelling, handling can include inspection, rejection and diversion.
- Assessment inputs include product and pack format, line speed, footprint, environment, controls and the required inspection or rejection response.
What can label verification check?
Label verification uses configured acceptance criteria to decide which visible label features count as acceptable on the line. Depending on that configuration, the inspection may check that a label is present, occupies the intended position, has the required print appearance or shows an acceptable code appearance.
These configured criteria give the inspection a defined basis for assessing the selected visible features. The term alone does not mean every installation checks presence, position, print and code appearance, or that it assesses wider product defects.
Those checks describe a label-focused inspection scope. A wider vision inspection arrangement may also assess packaging features or defect criteria.
How does label verification fit into a production line?
In end-of-line automation, label verification sits after a label has been applied. The presentation stage and response stage therefore need separate consideration.
Pre-labelling product presentation
Before labelling, product handling can provide spacing between packs, set their orientation and maintain stable product presentation for the labelling step.
Post-labelling inspection and response
After labelling, inspection can assess the configured visible features and flag products that need a separate response. Rejection and diversion are different handling outcomes. The selected behaviour depends on the inspection criteria and how the inspection integrates with line controls.
How does label verification differ from vision inspection and code functions?
Label verification focuses on configured visible label criteria. Broader vision inspection can assess additional packaging or defect features, while barcode reading captures encoded data and code verification checks code quality or expected content.
Broader vision inspection scope
Vision inspection is the broader camera or sensor-based function. Its possible scope can include labels, packaging features and defect criteria, while label verification applies inspection criteria specifically to the label and its visible features.
Broader identification systems can combine barcode scanning and vision functions, while label verification applies inspection criteria specifically to the label and its visible features.
Barcode reading and code verification
Barcode or code reading captures machine-readable or encoded data. On an automated line, a fixed-mount barcode scanner can capture machine-readable data without manual scanning, while code verification remains a separate check of code quality or expected content. A vision system may incorporate code reading, but barcode reading alone does not automatically constitute formal code verification.
What inputs shape label verification system assessment?
Assessment inputs include product and pack format, label position, line speed, footprint, environment, controls and the inspection or rejection response. These inputs shape the system assessment.
Product and label variables
Product and pack format, along with label position, form part of the system assessment.
Line, environment and controls
Line speed and available footprint form part of the system assessment, alongside the operating environment and controls. These details describe the setting in which the label check must be integrated, including the physical space and control arrangements available around the line.
Inspection and rejection response
The inspection response should be stated alongside the rejection response. Configured criteria determine what the system identifies, while line integration determines how inspection, rejection or diversion is handled after that decision. This keeps the visible check separate from the downstream product-handling action.
ALS Identify vision systems for label verification
ALS Identify can supply and configure a vision systems for inspection applications, then integrate the required inspection, rejection or diversion response around the line requirement. Share your product format, label position and line conditions with ALS Identify to discuss the approach.
