EXTRUDER TECHNOLOGY | MACHINERY
Machine output: latest in extruder technology
The extruders at the heart of the extrusion process – whether for pipes or profiles – continue to advance, with features including higher output and enhanced energy efficiency
Refinements in extruder technology are helping manufacturers to make products more efficiently – such as more quickly, or with lower energy con- sumption. In some cases, they use lab-scale models to test out new concepts. US-based weather seal manufacturer Coda
Products has used a lab line from Davis-Standard to turn an idea into a product. The company manufactures standard and custom seal geometries using proprietary foam technology to provide high-performance weather seals to the window and door industry. “Using the lab line at Davis-Standard’s R&D facility enabled us to run product trials – to deter- mine the optimal machinery configuration prior to equipment purchase,” said Dan Cook, president and founder of Coda Products. The Davis-Standard team helped with feedscrew
design, extruder specification, and control systems for integration with its proprietary in-house downstream equipment. Cook made product samples at the lab using “rigorous test criteria”. Once proven, he bought several Davis-Standard extruders equipped with DS-eTPC controls – engi- neered for Coda’s processes. The proprietary production processes to make the foam used in Coda’s weatherstripping has a smaller cell structure than competitive products. This structure improves compression set performance and is augmented by a flexible skin coating and rigid carrier compo- nent for added seal strength and improved
www.pipeandprofile.com
longevity. The process is designed to enable Coda to quickly develop custom profile geometries to suit customer’s needs. “We’re pleased with the extruder performance and glad we opted for the DS-eTPC controls,” he added. “This has allowed us to load and save recipes from production runs – making start-up and shutdown a breeze. We’ve also ramped up production in short order.”
Screw redesign Tecnomatic has developed Evo versions of its Vega and Zephyr extruders in both L/D 37 and 40. The Evo versions incorporate a redesigned
screw geometry and a newly engineered spiral feed-bush. Building on a project of research and development, the development aims to enhance plasticisation, improve homogeneity, and maximise energy efficiency. The main highlight of the Evo versions is in the
screw design. The geometry of the screw has been reimagined, using advanced engineering tech- niques and cutting-edge materials to optimise plasticisation. This leads to superior melt quality,
July/August 2023 | PIPE & PROFILE EXTRUSION 33
Main image: Battenfeld- Cincinnati has added a 45mm model to its SolEx NG family of pipe extruders
IMAGE: BATTENFELD-CINCINNATI
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44
