An inIn-Linel, compounding device, or more specifically a twin-screw extruder can be employed for the production of cast and embossed films. This development not only provides a multitude of economic benefits but also provides significant process advantages. Economically, processors can expect to see savings in raw material, operation and overhead costs. Technically, they can see advantages in greater flexibility, reduced heat history and improved physical properties. One can now produce films from polymers where intermediary resins are unavailable. All this, without the added heat history of a secondary conversion process makes in-line compounding a viable alternative. The ihIn-Linele process is analyzed and limitations to the process are discussed. Finally, recent developments are presented which demonstrate how this once temperamental process has now become reliable and consistent.
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