Cast-film surface consistency: record where and when it was seen
The die side and chill-roll side can look different, as can film viewed before winding and after ageing. When a customer reports streaks, gloss variation or a rough feel, we first identify the side, machine direction and distance from the roll edge.
Cast-film production note
The die side and chill-roll side can look different, as can film viewed before winding and after ageing. When a customer reports streaks, gloss variation or a rough feel, we first identify the side, machine direction and distance from the roll edge.
We compare samples under the same light and at the same angle, then check thickness profile, die condition, chill-roll temperature, winding and additive dispersion. A short visual checklist keeps comments from different shifts comparable.
Send a full-width strip where possible
Mark the left, centre and right positions, the machine direction and the chill-roll side. Include line speed, output, temperatures, thickness profile and the time between production and inspection. These details help us separate a line pattern from a formulation effect.