Two temperatures belong in the enquiry
Record the pack-surface temperature at the labelling station and the temperatures experienced afterwards. Include the time between labelling and cooling. Do not substitute the freezer set point for the temperature of the surface receiving the label.
- Identify the pack material and coating; provide a container sample where possible.
- Describe the surface at application: dry, damp, condensed moisture or frost.
- Record time before cooling, storage duration and thawing steps.
Trial the finished label on the real container
Use the intended label size, ink and finish. Keep the current label as a comparison where available. Agree acceptance checks before choosing a replacement, so a change in appearance is not confused with a change in adhesion.
- Photograph the edges after application and after each agreed temperature stage.
- Check attachment around corners and curved areas.
- Check text and barcode readability after the planned handling and thawing.
A freezer-adhesive construction to discuss
The documented 50 µm coated transparent BOPP face with freezer-grade hot-melt adhesive and 60 g/m² white glassine identifies a sample candidate. It does not establish a minimum application temperature or prove attachment to wet or icy packs.
- Ask for the current specification and a trial for your actual conditions.
- Share photographs of failure and the point in the process when it appears.
- Keep container, label dimensions and line conditions consistent between samples.
Sources and scope
Model examples use the linked RT construction records. The checklist is a proposed observation plan, not a report of completed tests. Confirm the current grade and specification before a trial.