- Plastics Extrusion | Plastics Technology
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 heated barrel, where it is mixed, melted and pumped through a die The die gives the part its shape Types include film extrusion, sheet extrusion, pipe, profile and tubing extrusion
- EXTRUSION: Orientation: The Good and the Bad | Plastics Technology
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
- Pipe, Profile and Tubing Extrusion | Plastics Technology
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; siding; plastic decking; plastic fencing; window lineals
- Troubleshooting Flow Surging in Single-Screw Extruders
During his 39 years at Dow, he has focused on development, design and troubleshooting of polymer processes, especially in single-screw extrusion He co-authored Analyzing and Troubleshooting Single-Screw Extruders with Gregory Campbell
- Extrusion: Start Up and Shut Down Properly | Plastics Technology
Extrusion: Start Up and Shut Down Properly A key goal during startup and shutdown of the extruder is to prevent degradation of the polymer left in the extruder and downstream components such as screen changers, adapters, and dies
- Understanding Grooved Feed | Plastics Technology
Understanding Grooved Feed U S processors still have some catching up to do when it comes to getting the most out of grooved-feed extruders But decades of European experience offer lessons on how to use grooved feeds to run even resins like TPU, nylon, and PET
- EXTRUSION: Melting 101 | Plastics Technology
EXTRUSION: Melting 101 Learn the basics on how polymer melts in a single screw Barrel temperature plays less of a role than you might think
- Film Extrusion | Plastics Technology
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 quenched, pulled to a second set of rolls to cool the other side, then wound In blown film extrusion, plastic is extruded into a cylindrical die, then inflated to form a bubble, which is cooled
|