Jan 2, 2026 · Extrusion is a continuous process through which parts of a fixed cross-sectional profile are made. Material is fed through a hopper into an extruder, essentially a rotating screw surrounded by a …

Jul 29, 2016 · All extrusion processes experience molecular orientation due to the inherent strain applied to the long-chain molecules as the polymer is shaped and flows through the die.

Dec 5, 2025 · Film extrusion is divided into two subcategories: cast film (flat film) and blown film. In cast film extrusion, hot plastic is extruded through a flat, slit die onto a polished chill roll where it is …

Jul 16, 2015 · Polymers shrink, and extrusion processors have to compensate for that effect to meet the dimensional and geometrical requirements of their parts. While it’s true that most materials shrink, …

Mar 24, 2004 · Gels are a common quality problem in thin film and tubing extrusion. To solve them, learn from where they came.

Dec 1, 2025 · Pipe is formed when plastics is extruded through a round shaping die, cooled in a water bath, and either cut and coiled. Used in manufacture of medical tubing; PVC pipe; HDPE pipe; …

Oct 24, 2025 · Plastics Extrusion Expert Jim Frankland, President of Franklin Plastics Consulting, delves into solutions and troubleshooting for film extrusion, sheet extrusion, pipe, profile and tubing extrusion.

Jul 7, 2025 · Sheet extrusion includes manufacture of industrial plastic sheet; packaging sheet; thin-gauge sheet; thick-gauge sheet; thermoformed sheet.

Jan 20, 2016 · EXTRUSION: Venerable Maddock Mixer Still an Extrusion Workhorse Variations to this decades-old mixing section are widely used, but processors should carefully analyze these designs …

Apr 27, 2018 · A balanced design is required to get the best performance from a barrier screw. Barrier screws typically have three or four distinct sections that have somewhat different function, with each …