Corona Treater Dyne Level Verification Log

This template captures the inspection details, film and treatment identification, three-point dyne readings across the web, and any corrective action taken before release. It is designed for corona-treated film that will be printed, laminated, or otherwise bonded. The log also includes signoff fields so you can document who verified the result and whether supervisor review was required.

Use it after corona treatment and before downstream printing, coating, or lamination. It is especially useful at startup, after roll changes, after line adjustments, and whenever adhesion problems are suspected. If the job has a strict minimum surface energy requirement, this log should be completed before the material is released.

A trained operator, quality inspector, or line lead should record the readings, with supervisor review when the template calls for escalation. The person taking the readings should know how to use the dyne test method consistently and how to identify the treated side of the film. If your site uses a formal quality system, assign the role in the SOP or work instruction referenced in the log.

Yes, it supports quality records and process verification expected under ISO 9001-style document control and traceability practices. It also helps demonstrate that the process was checked against internal specifications before release. While dyne testing itself is usually a quality control practice rather than a direct legal requirement, the record can support customer audits and non-conformance investigations.

Common failures include testing the wrong side of the film, recording only one reading instead of checking across the web, and releasing material without documenting a retest after adjustment. Another frequent issue is treating the line without recording the settings or power level, which makes troubleshooting difficult later. This log forces those details into one place.

That depends on your process and customer specification, but many plants verify at startup, after treatment changes, after roll changes, and at defined intervals during the run. If the film is sensitive to speed, power, or material variation, more frequent checks are appropriate. The template includes a place to record the time and line conditions so you can align the cadence with your SOP.

Yes, the target dyne level, acceptance criteria, and downstream process field can be tailored for specific film grades, inks, adhesives, or laminations. You can also add fields for test pen lot number, ambient conditions, or operator ID if your quality system requires it. The structure is flexible enough to support multiple product families without changing the core verification logic.

Ad hoc notes often miss the treatment side, the actual reading locations, or the retest result after adjustment. That makes it hard to prove the film was ready when it moved to the next process. A structured log creates a repeatable record that supports troubleshooting, traceability, and consistent release decisions.