Ask Rod
Ask Rod is our running series of straight answers to the questions packaging buyers and plant engineers actually ask, drawn from decades of production-floor experience. New episodes land regularly as articles and video.
Why Does Film Keep Splitting?
Film splitting almost always traces back to one of three causes: a resin mismatch, a gauge problem, or a cold seal. Here's how to tell which one you have.
Episode 2Why Film Bubbles Collapse
A bubble that wanders, wobbles, or collapses outright is rarely random. Most of the time it's uneven cooling, a frost line problem, a draw ratio pushed too far, or a draft in the plant.
Episode 3Seal Failure Causes, Explained
Almost every seal failure I've ever diagnosed comes down to one of three things: contamination on the seal area, the wrong heat and pressure combination, or a resin that was never right for sealing in the first place.
Episode 4Film Gauge Explained
Gauge is just thickness, but it is measured, reported, and varies across the width in ways that trip people up. And making film thicker is often the wrong fix for a strength problem.
Episode 5Reducing Packaging Costs Without Cutting Quality
Cheaper resin is the lever everyone reaches for first, and it's usually the wrong one. Strategic down-gauging, resin blend optimization, and cutting waste deliver real savings without putting performance at risk.
Episode 6Choosing The Right Resin For Your Application
The resin price sheet is the last thing I look at, not the first. Start from how the product actually fails and the environment the film has to survive, and the right resin becomes obvious.