Online Course: Raw Materials and Additives in PE Film Production (Part 2) – BLFIL-P2-1002

Raw Materials, Rheology and Additives in PE Film Production — The reason your line behaves differently every time you change material. You change the resin batch — same supplier, same grade, same settings — and the bubble starts drifting. Thickness variation increases. The frost line moves. Nothing in the recipe changed, but the process did. This is the course that explains why. Most blown film problems that look like machine issues are actually material issues. The difference between LDPE and LLDPE is not just a name on a data sheet — it is a completely different melt behavior under shear and elongation. And MFI alone tells you almost nothing about how a resin will actually perform on your line. What your team will understand after this course: — How melt viscosity, elasticity, and elongational resistance affect bubble stability, thickness uniformity, and cooling behavior — Why LDPE, LLDPE, metallocene LLDPE, MDPE, and HDPE behave so differently in the blown film process — despite similar catalogue values — Why metallocene resins require different processing conditions than conventional LLDPE — and what happens when you ignore that — How additives (slip, antiblock, stabilizers) change melt behavior in the barrel and die — not just the properties of the finished film — How regrind and recyclate alter the rheology of the melt and why the same blend can behave differently from batch to batch — How to make material change decisions based on rheology, not just compensate for problems with machine settings Who is this course for? — Machine operators who see the effects of material changes on the line but don't always know whether the cause is the resin, the additives, or the settings — Production engineers and technologists who need to predict how a material change will affect the process — before they run it — Quality specialists who want to connect lab results with real process behavior on the line — Production managers who need their team to make material decisions based on understanding, not trial and error — Companies introducing new resins, blends, or recyclate into their production Why this course matters In most plants, material changes are handled reactively. Something goes wrong, the operator adjusts temperature or speed, and eventually the process stabilizes — but nobody knows exactly why, or at what cost. This course gives your team the ability to anticipate the consequences of a material change before it reaches the die. They stop compensating for symptoms and start addressing causes. The result: fewer material-related production stops, less scrap from trial-and-error adjustments, and a team that understands the connection between what goes into the hopper and what comes off the winder. What will you learn? Polymer melt rheology in blown film extrusion What rheology means in practice — how melt viscosity, elasticity, and elongational resistance determine bubble stability, thickness uniformity, and cooling behavior. Why MFI alone is not enough. Rheological characteristics of PE resins used in blown film Side-by-side comparison of LDPE, LLDPE, metallocene LLDPE, MDPE, and HDPE — how each one behaves differently under shear and elongation, and what that means for your process. How resin rheology affects bubble stability and film quality The connection between melt properties and what you see on the line — frost line position, thickness variation, mechanical strength, and optical properties. Additives and their effect on melt behavior How slip agents, antiblock, UV stabilizers, and other functional additives influence melt flow in the barrel and die — and the risks of incorrect dosing. Regrind and recyclate — impact on rheology and process stability Why regrind changes the melt, why the same blend can behave differently between batches, and how to minimize instability when working with secondary materials. From rheology to production decisions How to interpret process behavior when changing resins, additives, or regrind content — and make decisions based on melt properties, not guesswork. Quality control and lab results in context Which lab tests actually matter for blown film production, and how to connect measurement results with what you observe on the line. Course format — Practical PDF materials covering resin rheology, additives, and process behavior in the context of real blown film production — Video and audio explanations for selected topics — melt behavior, bubble stability, material comparisons — Final quiz to verify understanding of key relationships between material, rheology, and process — Rolbatch Academy certificate upon successful completion This course follows directly from Part 1. Part 1 gives your team the process logic. Part 2 gives them the material logic. Together, they form the foundation for everything that follows — line construction, process optimization, multilayer technologies, and troubleshooting. Practical details — Access duration: 30 days — learn at your own pace — Certificate: Rolbatch Academy certificate and diploma — Available languages: German, English, Polish, Spanish. Other languages upon request — Price: net price. 19% VAT added at checkout for German customers. EU companies with valid VAT ID (verified in VIES) qualify for 0% VAT — contact us before purchase Questions? Need a quote for your team? Visit our Contact page for pricing, group discounts, and language availability. Certificates -> Contact -> FAQ -> Frequently Asked Questions Visit us on LinkedIn ->